From: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
To: Xiaolin Tang <tangxiaolin@loongson.cn>,
libc-alpha@sourceware.org, caiyinyu@loongson.cn,
i.swmail@xen0n.name
Cc: xuchenghua@loongson.cn
Subject: Re: [PATCH 1/1] LoongArch: Hard Float Support Of Math Functions.
Date: Thu, 3 Nov 2022 09:42:59 -0300 [thread overview]
Message-ID: <314832e8-4db6-ad12-b8e4-bd766cadc551@linaro.org> (raw)
In-Reply-To: <20221103121433.2909287-2-tangxiaolin@loongson.cn>
On 03/11/22 09:14, Xiaolin Tang wrote:
> This patch contains hardware floating-point support of math
> fuctions for the LoongArch ISA. LoongArch ISA has many hardware
> floating-point instructions that can be used in the corresponding
> math functions.
>
> instructions functions
> fma.{s/d} __fma{f/ }
> f{max/min}.{s/d}, fclass.{s/d} __f{max/min}i{mum/mum_mum}{f/ }
> f{maxa/mina}.{s/d} __f{max,min}mag{f/ }
> f{maxa/mina}.{s/d}, fclass.{s/d __f{max/min}imum{_mag/_mag_num}{f/ }
> fcopysign.{s/d __copysign{f/ }
GCC already implements a generic builtin copysign that expands it without a
libcall, I prefer to implement it on compiler (which I presume it will be on
13, since on gcc 12 I do see fcopysign.d). I will send a patch to remove
the RISCV version as well.
> frint.{s/d} __{ /l/ll}rint{f/ }
> fscaleb.{s/d}, fclass.{s/d} __scalbn{f/ }, __ieee754__scalb{f/ }
> flogb.{s/d}, fclass.{s/d} __logb{f/ }, __ieee754_ilogb{f/ }
> fclass.{s/d} __fpclassify{f/ }, __issignaling{f/ }
>
The rest looks ok, although for the max/min/ilog/log/fpclassify/issignalling
function I would expect that eventually compiler will start to provide builtins
and optimize the calls without the need of libc. Specially because glibc
itself uses a lot of such symbols internally, so we will need compiler support
to avoid using internal hacks such math_private.h.
Also please split the patch to have one for each symbol (it make sense to pack
version for different floating types in one patch). Besides it, replace
__builtin_expect with __glibc_likely and add a brief description on each
file header.
There are also minor style issues, such missing space after 'volatile' asm
directive.
> * sysdeps/loongarch/fpu/e_ilogb.c: New file.
> * sysdeps/loongarch/fpu/e_ilogbf.c: Likewise.
> * sysdeps/loongarch/fpu/e_scalb.c: Likewise.
> * sysdeps/loongarch/fpu/e_scalbf.c: Likewise.
> * sysdeps/loongarch/fpu/math-use-builtins-fma.h: Likewise.
> * sysdeps/loongarch/fpu/s_copysign.c: Likewise.
> * sysdeps/loongarch/fpu/s_copysignf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaximum.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaximum_mag.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaximum_mag_num.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaximum_mag_numf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaximum_magf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaximum_num.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaximum_numf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaximumf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaxmag.c: Likewise.
> * sysdeps/loongarch/fpu/s_fmaxmagf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminimum.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminimum_mag.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminimum_mag_num.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminimum_mag_numf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminimum_magf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminimum_num.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminimum_numf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminimumf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminmag.c: Likewise.
> * sysdeps/loongarch/fpu/s_fminmagf.c: Likewise.
> * sysdeps/loongarch/fpu/s_fpclassify.c: Likewise.
> * sysdeps/loongarch/fpu/s_fpclassifyf.c: Likewise.
> * sysdeps/loongarch/fpu/s_issignaling.c: Likewise.
> * sysdeps/loongarch/fpu/s_issignalingf.c: Likewise.
> * sysdeps/loongarch/fpu/s_llrint.c: Likewise.
> * sysdeps/loongarch/fpu/s_llrintf.c: Likewise.
> * sysdeps/loongarch/fpu/s_logb.c: Likewise.
> * sysdeps/loongarch/fpu/s_logbf.c: Likewise.
> * sysdeps/loongarch/fpu/s_lrint.c: Likewise.
> * sysdeps/loongarch/fpu/s_lrintf.c: Likewise.
> * sysdeps/loongarch/fpu/s_rint.c: Likewise.
> * sysdeps/loongarch/fpu/s_rintf.c: Likewise.
> * sysdeps/loongarch/fpu/s_scalbn.c: Likewise.
> * sysdeps/loongarch/fpu/s_scalbnf.c: Likewise.
> * sysdeps/loongarch/fpu_control.h: Add _FCLASS_* macro.
> ---
> sysdeps/loongarch/fpu/e_ilogb.c | 37 +++++++++++
> sysdeps/loongarch/fpu/e_ilogbf.c | 37 +++++++++++
> sysdeps/loongarch/fpu/e_scalb.c | 61 +++++++++++++++++++
> sysdeps/loongarch/fpu/e_scalbf.c | 61 +++++++++++++++++++
> sysdeps/loongarch/fpu/math-use-builtins-fma.h | 4 ++
> sysdeps/loongarch/fpu/s_copysign.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_copysignf.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_fmaximum.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fmaximum_mag.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fmaximum_mag_num.c | 47 ++++++++++++++
> sysdeps/loongarch/fpu/s_fmaximum_mag_numf.c | 47 ++++++++++++++
> sysdeps/loongarch/fpu/s_fmaximum_magf.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fmaximum_num.c | 47 ++++++++++++++
> sysdeps/loongarch/fpu/s_fmaximum_numf.c | 47 ++++++++++++++
> sysdeps/loongarch/fpu/s_fmaximumf.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fmaxmag.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_fmaxmagf.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_fminimum.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fminimum_mag.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fminimum_mag_num.c | 47 ++++++++++++++
> sysdeps/loongarch/fpu/s_fminimum_mag_numf.c | 47 ++++++++++++++
> sysdeps/loongarch/fpu/s_fminimum_magf.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fminimum_num.c | 47 ++++++++++++++
> sysdeps/loongarch/fpu/s_fminimum_numf.c | 47 ++++++++++++++
> sysdeps/loongarch/fpu/s_fminimumf.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fminmag.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_fminmagf.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_fpclassify.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_fpclassifyf.c | 38 ++++++++++++
> sysdeps/loongarch/fpu/s_issignaling.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_issignalingf.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_llrint.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_llrintf.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_logb.c | 30 +++++++++
> sysdeps/loongarch/fpu/s_logbf.c | 30 +++++++++
> sysdeps/loongarch/fpu/s_lrint.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_lrintf.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_rint.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_rintf.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_scalbn.c | 29 +++++++++
> sysdeps/loongarch/fpu/s_scalbnf.c | 29 +++++++++
> sysdeps/loongarch/fpu_control.h | 17 ++++++
> 42 files changed, 1497 insertions(+)
> create mode 100644 sysdeps/loongarch/fpu/e_ilogb.c
> create mode 100644 sysdeps/loongarch/fpu/e_ilogbf.c
> create mode 100644 sysdeps/loongarch/fpu/e_scalb.c
> create mode 100644 sysdeps/loongarch/fpu/e_scalbf.c
> create mode 100644 sysdeps/loongarch/fpu/math-use-builtins-fma.h
> create mode 100644 sysdeps/loongarch/fpu/s_copysign.c
> create mode 100644 sysdeps/loongarch/fpu/s_copysignf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaximum.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_mag.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_mag_num.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_mag_numf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_magf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_num.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_numf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaximumf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaxmag.c
> create mode 100644 sysdeps/loongarch/fpu/s_fmaxmagf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminimum.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminimum_mag.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminimum_mag_num.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminimum_mag_numf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminimum_magf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminimum_num.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminimum_numf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminimumf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminmag.c
> create mode 100644 sysdeps/loongarch/fpu/s_fminmagf.c
> create mode 100644 sysdeps/loongarch/fpu/s_fpclassify.c
> create mode 100644 sysdeps/loongarch/fpu/s_fpclassifyf.c
> create mode 100644 sysdeps/loongarch/fpu/s_issignaling.c
> create mode 100644 sysdeps/loongarch/fpu/s_issignalingf.c
> create mode 100644 sysdeps/loongarch/fpu/s_llrint.c
> create mode 100644 sysdeps/loongarch/fpu/s_llrintf.c
> create mode 100644 sysdeps/loongarch/fpu/s_logb.c
> create mode 100644 sysdeps/loongarch/fpu/s_logbf.c
> create mode 100644 sysdeps/loongarch/fpu/s_lrint.c
> create mode 100644 sysdeps/loongarch/fpu/s_lrintf.c
> create mode 100644 sysdeps/loongarch/fpu/s_rint.c
> create mode 100644 sysdeps/loongarch/fpu/s_rintf.c
> create mode 100644 sysdeps/loongarch/fpu/s_scalbn.c
> create mode 100644 sysdeps/loongarch/fpu/s_scalbnf.c
>
> diff --git a/sysdeps/loongarch/fpu/e_ilogb.c b/sysdeps/loongarch/fpu/e_ilogb.c
> new file mode 100644
> index 0000000000..27a7dace29
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/e_ilogb.c
> @@ -0,0 +1,37 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <fpu_control.h>
> +
> +int
> +__ieee754_ilogb (double x)
> +{
> + int x_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> +
> + if (x_cond & _FCLASS_ZERO )
> + return FP_ILOGB0;
> + if (x_cond & ( _FCLASS_NAN | _FCLASS_INF))
> + return FP_ILOGBNAN;
> +
> + asm volatile("fabs.d \t%0, %1" : "=f" (x) : "f" (x));
> + asm volatile("flogb.d \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> diff --git a/sysdeps/loongarch/fpu/e_ilogbf.c b/sysdeps/loongarch/fpu/e_ilogbf.c
> new file mode 100644
> index 0000000000..ed5ac99b6b
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/e_ilogbf.c
> @@ -0,0 +1,37 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <fpu_control.h>
> +
> +int
> +__ieee754_ilogbf (float x)
> +{
> + int x_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> +
> + if (x_cond & _FCLASS_ZERO )
> + return FP_ILOGB0;
> + if (x_cond & ( _FCLASS_NAN | _FCLASS_INF))
> + return FP_ILOGBNAN;
> +
> + asm volatile("fabs.s \t%0, %1" : "=f" (x) : "f" (x));
> + asm volatile("flogb.s \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> diff --git a/sysdeps/loongarch/fpu/e_scalb.c b/sysdeps/loongarch/fpu/e_scalb.c
> new file mode 100644
> index 0000000000..e7fcfe86d0
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/e_scalb.c
> @@ -0,0 +1,61 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-finite.h>
> +#include <fpu_control.h>
> +#include <float.h>
> +
> +double
> +__ieee754_scalb (double x, double fn)
> +{
> + int x_cond;
> + int fn_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (fn_cond) : "f" (fn));
> +
> + if (__builtin_expect(( x_cond | fn_cond) & _FCLASS_NAN, 0))
> + return x * fn;
> + else if (__builtin_expect(fn_cond & _FCLASS_INF, 0))
> + {
> + if (!(fn_cond & _FCLASS_MINF))
> + return x * fn;
> + else
> + return x / -fn;
> + }
> + else if (__builtin_expect(-DBL_MAX < fn && fn < DBL_MAX, 1))
> + {
> + long y1;
> + double y;
> +
> + asm volatile("frint.d \t%0, %1" : "=f" (y) : "f" (fn));
> + asm volatile("ftintrz.l.d \t%0, %1" : "=f" (y) : "f" (y));
> + asm volatile("movfr2gr.d \t%0, %1" : "=r" (y1) : "f" (y));
> +
> + if (y1 != fn )
> + return (x - x) / (x - x);
> +
> + asm volatile("fscaleb.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + }
> + else
> + asm volatile("fscaleb.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (fn));
> +
> + return x;
> +}
> +libm_alias_finite (__ieee754_scalb, __scalb)
> diff --git a/sysdeps/loongarch/fpu/e_scalbf.c b/sysdeps/loongarch/fpu/e_scalbf.c
> new file mode 100644
> index 0000000000..085a5a63bc
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/e_scalbf.c
> @@ -0,0 +1,61 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-finite.h>
> +#include <fpu_control.h>
> +#include <float.h>
> +
> +float
> +__ieee754_scalbf (float x, float fn)
> +{
> + int x_cond;
> + int fn_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (fn_cond) : "f" (fn));
> +
> + if (__builtin_expect(( x_cond | fn_cond) & _FCLASS_NAN, 0))
> + return x * fn;
> + else if (__builtin_expect(fn_cond & _FCLASS_INF, 0))
> + {
> + if (!(fn_cond & _FCLASS_MINF))
> + return x * fn;
> + else
> + return x / -fn;
> + }
> + else if (__builtin_expect(-FLT_MAX < fn && fn < FLT_MAX, 1))
> + {
> + int y1;
> + float y;
> +
> + asm volatile("frint.s \t%0, %1" : "=f" (y) : "f" (fn));
> + asm volatile("ftintrz.w.s \t%0, %1" : "=f" (y) : "f" (y));
> + asm volatile("movfr2gr.s \t%0, %1" : "=r" (y1) : "f" (y));
> +
> + if (y1 != fn )
> + return (x - x) / (x - x);
> +
> + asm volatile("fscaleb.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + }
> + else
> + asm volatile("fscaleb.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (fn));
> +
> + return x;
> +}
> +libm_alias_finite (__ieee754_scalb, __scalb)
> diff --git a/sysdeps/loongarch/fpu/math-use-builtins-fma.h b/sysdeps/loongarch/fpu/math-use-builtins-fma.h
> new file mode 100644
> index 0000000000..eede75aa41
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/math-use-builtins-fma.h
> @@ -0,0 +1,4 @@
> +#define USE_FMA_BUILTIN 1
> +#define USE_FMAF_BUILTIN 1
> +#define USE_FMAL_BUILTIN 0
> +#define USE_FMAF128_BUILTIN 0
> diff --git a/sysdeps/loongarch/fpu/s_copysign.c b/sysdeps/loongarch/fpu/s_copysign.c
> new file mode 100644
> index 0000000000..e850227549
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_copysign.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library. If not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +
> +double
> +__copysign (double x, double y)
> +{
> + asm volatile("fcopysign.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__copysign, copysign)
> diff --git a/sysdeps/loongarch/fpu/s_copysignf.c b/sysdeps/loongarch/fpu/s_copysignf.c
> new file mode 100644
> index 0000000000..2047869359
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_copysignf.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library. If not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +
> +float
> +__copysignf (float x, float y)
> +{
> + asm volatile("fcopysign.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__copysign, copysign)
> diff --git a/sysdeps/loongarch/fpu/s_fmaximum.c b/sysdeps/loongarch/fpu/s_fmaximum.c
> new file mode 100644
> index 0000000000..381a2839da
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaximum.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +#include <fpu_control.h>
> +
> +double
> +__fmaximum (double x, double y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond | y_cond) & _FCLASS_NAN)
> + return x * y;
> +
> + asm volatile("fmax.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fmaximum, fmaximum)
> diff --git a/sysdeps/loongarch/fpu/s_fmaximum_mag.c b/sysdeps/loongarch/fpu/s_fmaximum_mag.c
> new file mode 100644
> index 0000000000..e17fc76c25
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaximum_mag.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +#include <fpu_control.h>
> +
> +double
> +__fmaximum_mag (double x, double y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond | y_cond) & _FCLASS_NAN)
> + return x * y;
> +
> + asm volatile("fmaxa.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fmaximum_mag, fmaximum_mag)
> diff --git a/sysdeps/loongarch/fpu/s_fmaximum_mag_num.c b/sysdeps/loongarch/fpu/s_fmaximum_mag_num.c
> new file mode 100644
> index 0000000000..b6002aefbd
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaximum_mag_num.c
> @@ -0,0 +1,47 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +#include <fpu_control.h>
> +
> +double
> +__fmaximum_mag_num (double x, double y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond & _FCLASS_NAN) && !(y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmaxa.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return y;
> + }
> +
> + if (!(x_cond & _FCLASS_NAN) && (y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmaxa.d \t%0, %1, %2" : "=f" (y) : "f" (x), "f" (y));
> + return x;
> + }
> +
> + asm volatile("fmaxa.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fmaximum_mag_num, fmaximum_mag_num)
> diff --git a/sysdeps/loongarch/fpu/s_fmaximum_mag_numf.c b/sysdeps/loongarch/fpu/s_fmaximum_mag_numf.c
> new file mode 100644
> index 0000000000..7790579555
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaximum_mag_numf.c
> @@ -0,0 +1,47 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +#include <fpu_control.h>
> +
> +float
> +__fmaximum_mag_numf (float x, float y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond & _FCLASS_NAN) && !(y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmaxa.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return y;
> + }
> +
> + if (!(x_cond & _FCLASS_NAN) && (y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmaxa.s \t%0, %1, %2" : "=f" (y) : "f" (x), "f" (y));
> + return x;
> + }
> +
> + asm volatile("fmaxa.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fmaximum_mag_num, fmaximum_mag_num)
> diff --git a/sysdeps/loongarch/fpu/s_fmaximum_magf.c b/sysdeps/loongarch/fpu/s_fmaximum_magf.c
> new file mode 100644
> index 0000000000..54c8b5da47
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaximum_magf.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +#include <fpu_control.h>
> +
> +float
> +__fmaximum_magf (float x, float y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond | y_cond) & _FCLASS_NAN)
> + return x * y;
> +
> + asm volatile("fmaxa.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fmaximum_mag, fmaximum_mag)
> diff --git a/sysdeps/loongarch/fpu/s_fmaximum_num.c b/sysdeps/loongarch/fpu/s_fmaximum_num.c
> new file mode 100644
> index 0000000000..4b36ae800c
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaximum_num.c
> @@ -0,0 +1,47 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +#include <fpu_control.h>
> +
> +double
> +__fmaximum_num (double x, double y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond & _FCLASS_NAN) && !(y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmax.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return y;
> + }
> +
> + if (!(x_cond & _FCLASS_NAN) && (y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmax.d \t%0, %1, %2" : "=f" (y) : "f" (x), "f" (y));
> + return x;
> + }
> +
> + asm volatile("fmax.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fmaximum_num, fmaximum_num)
> diff --git a/sysdeps/loongarch/fpu/s_fmaximum_numf.c b/sysdeps/loongarch/fpu/s_fmaximum_numf.c
> new file mode 100644
> index 0000000000..75c7b9937f
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaximum_numf.c
> @@ -0,0 +1,47 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +#include <fpu_control.h>
> +
> +float
> +__fmaximum_numf (float x, float y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond & _FCLASS_NAN) && !(y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmax.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return y;
> + }
> +
> + if (!(x_cond & _FCLASS_NAN) && (y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmax.s \t%0, %1, %2" : "=f" (y) : "f" (x), "f" (y));
> + return x;
> + }
> +
> + asm volatile("fmax.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fmaximum_num, fmaximum_num)
> diff --git a/sysdeps/loongarch/fpu/s_fmaximumf.c b/sysdeps/loongarch/fpu/s_fmaximumf.c
> new file mode 100644
> index 0000000000..f6c7e629b6
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaximumf.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +#include <fpu_control.h>
> +
> +float
> +__fmaximumf (float x, float y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond | y_cond) & _FCLASS_NAN)
> + return x * y;
> +
> + asm volatile("fmax.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fmaximum, fmaximum)
> diff --git a/sysdeps/loongarch/fpu/s_fmaxmag.c b/sysdeps/loongarch/fpu/s_fmaxmag.c
> new file mode 100644
> index 0000000000..3757c981de
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaxmag.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +
> +double
> +__fmaxmag (double x, double y)
> +{
> + asm volatile("fmaxa.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fmaxmag, fmaxmag)
> diff --git a/sysdeps/loongarch/fpu/s_fmaxmagf.c b/sysdeps/loongarch/fpu/s_fmaxmagf.c
> new file mode 100644
> index 0000000000..fd826c03cc
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fmaxmagf.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +
> +float
> +__fmaxmagf (float x, float y)
> +{
> + asm volatile("fmaxa.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fmaxmag, fmaxmag)
> diff --git a/sysdeps/loongarch/fpu/s_fminimum.c b/sysdeps/loongarch/fpu/s_fminimum.c
> new file mode 100644
> index 0000000000..526dced320
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminimum.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +#include <fpu_control.h>
> +
> +double
> +__fminimum (double x, double y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond | y_cond) & _FCLASS_NAN)
> + return x * y;
> +
> + asm volatile("fmin.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fminimum, fminimum)
> diff --git a/sysdeps/loongarch/fpu/s_fminimum_mag.c b/sysdeps/loongarch/fpu/s_fminimum_mag.c
> new file mode 100644
> index 0000000000..2de6d4d9d8
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminimum_mag.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +#include <fpu_control.h>
> +
> +double
> +__fminimum_mag (double x, double y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond | y_cond) & _FCLASS_NAN)
> + return x * y;
> +
> + asm volatile("fmina.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fminimum_mag, fminimum_mag)
> diff --git a/sysdeps/loongarch/fpu/s_fminimum_mag_num.c b/sysdeps/loongarch/fpu/s_fminimum_mag_num.c
> new file mode 100644
> index 0000000000..3f0e6d34b2
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminimum_mag_num.c
> @@ -0,0 +1,47 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +#include <fpu_control.h>
> +
> +double
> +__fminimum_mag_num (double x, double y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond & _FCLASS_NAN) && !(y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmina.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return y;
> + }
> +
> + if (!(x_cond & _FCLASS_NAN) && (y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmina.d \t%0, %1, %2" : "=f" (y) : "f" (x), "f" (y));
> + return x;
> + }
> +
> + asm volatile("fmina.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fminimum_mag_num, fminimum_mag_num)
> diff --git a/sysdeps/loongarch/fpu/s_fminimum_mag_numf.c b/sysdeps/loongarch/fpu/s_fminimum_mag_numf.c
> new file mode 100644
> index 0000000000..f8146b0873
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminimum_mag_numf.c
> @@ -0,0 +1,47 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +#include <fpu_control.h>
> +
> +float
> +__fminimum_mag_numf (float x, float y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond & _FCLASS_NAN) && !(y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmina.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return y;
> + }
> +
> + if (!(x_cond & _FCLASS_NAN) && (y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmina.s \t%0, %1, %2" : "=f" (y) : "f" (x), "f" (y));
> + return x;
> + }
> +
> + asm volatile("fmina.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fminimum_mag_num, fminimum_mag_num)
> diff --git a/sysdeps/loongarch/fpu/s_fminimum_magf.c b/sysdeps/loongarch/fpu/s_fminimum_magf.c
> new file mode 100644
> index 0000000000..214a6168ad
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminimum_magf.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +#include <fpu_control.h>
> +
> +float
> +__fminimum_magf (float x, float y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond | y_cond) & _FCLASS_NAN)
> + return x * y;
> +
> + asm volatile("fmina.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fminimum_mag, fminimum_mag)
> diff --git a/sysdeps/loongarch/fpu/s_fminimum_num.c b/sysdeps/loongarch/fpu/s_fminimum_num.c
> new file mode 100644
> index 0000000000..0091286d12
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminimum_num.c
> @@ -0,0 +1,47 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +#include <fpu_control.h>
> +
> +double
> +__fminimum_num (double x, double y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.d \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond & _FCLASS_NAN) && !(y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmin.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return y;
> + }
> +
> + if (!(x_cond & _FCLASS_NAN) && (y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmin.d \t%0, %1, %2" : "=f" (y) : "f" (x), "f" (y));
> + return x;
> + }
> +
> + asm volatile("fmin.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fminimum_num, fminimum_num)
> diff --git a/sysdeps/loongarch/fpu/s_fminimum_numf.c b/sysdeps/loongarch/fpu/s_fminimum_numf.c
> new file mode 100644
> index 0000000000..16f8414293
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminimum_numf.c
> @@ -0,0 +1,47 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +#include <fpu_control.h>
> +
> +float
> +__fminimum_numf (float x, float y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond & _FCLASS_NAN) && !(y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmin.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return y;
> + }
> +
> + if (!(x_cond & _FCLASS_NAN) && (y_cond & _FCLASS_NAN))
> + {
> + asm volatile("fmin.s \t%0, %1, %2" : "=f" (y) : "f" (x), "f" (y));
> + return x;
> + }
> +
> + asm volatile("fmin.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fminimum_num, fminimum_num)
> diff --git a/sysdeps/loongarch/fpu/s_fminimumf.c b/sysdeps/loongarch/fpu/s_fminimumf.c
> new file mode 100644
> index 0000000000..1122db177e
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminimumf.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +#include <fpu_control.h>
> +
> +float
> +__fminimumf (float x, float y)
> +{
> + int x_cond;
> + int y_cond;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + asm volatile ("fclass.s \t%0, %1" : "=f" (y_cond) : "f" (y));
> +
> + if ((x_cond | y_cond) & _FCLASS_NAN)
> + return x * y;
> +
> + asm volatile("fmin.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fminimum, fminimum)
> diff --git a/sysdeps/loongarch/fpu/s_fminmag.c b/sysdeps/loongarch/fpu/s_fminmag.c
> new file mode 100644
> index 0000000000..7b6e2915fe
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminmag.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +
> +double
> +__fminmag (double x, double y)
> +{
> + asm volatile("fmina.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_double (__fminmag, fminmag)
> diff --git a/sysdeps/loongarch/fpu/s_fminmagf.c b/sysdeps/loongarch/fpu/s_fminmagf.c
> new file mode 100644
> index 0000000000..a93cec2e2b
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fminmagf.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +
> +float
> +__fminmagf (float x, float y)
> +{
> + asm volatile("fmina.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
> + return x;
> +}
> +libm_alias_float (__fminmag, fminmag)
> diff --git a/sysdeps/loongarch/fpu/s_fpclassify.c b/sysdeps/loongarch/fpu/s_fpclassify.c
> new file mode 100644
> index 0000000000..865436c9a2
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fpclassify.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library. If not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#include <math.h>
> +#include <fenv_private.h>
> +
> +int
> +__fpclassify (double x)
> +{
> + int cls;
> + asm volatile ("fclass.d \t%0, %1" : "=f" (cls) : "f" (x));
> +
> + if (__builtin_expect (cls & _FCLASS_ZERO, _FCLASS_ZERO))
> + return FP_ZERO;
> + if (__builtin_expect (cls & _FCLASS_SUBNORM, _FCLASS_SUBNORM))
> + return FP_SUBNORMAL;
> + if (__builtin_expect (cls & _FCLASS_NAN, _FCLASS_NAN))
> + return FP_NAN;
> + if (__builtin_expect (cls & _FCLASS_INF, _FCLASS_INF))
> + return FP_INFINITE;
> + return FP_NORMAL;
> +}
> +libm_hidden_def (__fpclassify)
> diff --git a/sysdeps/loongarch/fpu/s_fpclassifyf.c b/sysdeps/loongarch/fpu/s_fpclassifyf.c
> new file mode 100644
> index 0000000000..ca7b1d6703
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_fpclassifyf.c
> @@ -0,0 +1,38 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library. If not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#include <math.h>
> +#include <fenv_private.h>
> +
> +int
> +__fpclassifyf (float x)
> +{
> + int cls;
> + asm volatile ("fclass.s \t%0, %1" : "=f" (cls) : "f" (x));
> +
> + if (__builtin_expect (cls & _FCLASS_NORM, _FCLASS_NORM))
> + return FP_NORMAL;
> + if (__builtin_expect (cls & _FCLASS_ZERO, _FCLASS_ZERO))
> + return FP_ZERO;
> + if (__builtin_expect (cls & _FCLASS_SUBNORM, _FCLASS_SUBNORM))
> + return FP_SUBNORMAL;
> + if (__builtin_expect (cls & _FCLASS_INF, _FCLASS_INF))
> + return FP_INFINITE;
> + return FP_NAN;
> +}
> +libm_hidden_def (__fpclassifyf)
> diff --git a/sysdeps/loongarch/fpu/s_issignaling.c b/sysdeps/loongarch/fpu/s_issignaling.c
> new file mode 100644
> index 0000000000..d6525516e1
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_issignaling.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library. If not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#include <math.h>
> +#include <fenv_private.h>
> +
> +int
> +__issignaling (double x)
> +{
> + int x_cond;
> + asm volatile("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
> + return (x_cond & _FCLASS_SNAN) != 0;
> +}
> +libm_hidden_def (__issignaling)
> diff --git a/sysdeps/loongarch/fpu/s_issignalingf.c b/sysdeps/loongarch/fpu/s_issignalingf.c
> new file mode 100644
> index 0000000000..48c287c8e7
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_issignalingf.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library. If not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#include <math.h>
> +#include <fenv_private.h>
> +
> +int
> +__issignalingf (float x)
> +{
> + int x_cond;
> + asm volatile("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x));
> + return (x_cond & _FCLASS_SNAN) != 0;
> +}
> +libm_hidden_def (__issignalingf)
> diff --git a/sysdeps/loongarch/fpu/s_llrint.c b/sysdeps/loongarch/fpu/s_llrint.c
> new file mode 100644
> index 0000000000..0adaacf1c1
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_llrint.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +
> +long long int
> +__llrint (double x)
> +{
> + asm volatile("frint.d \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> +libm_alias_double (__llrint, llrint)
> diff --git a/sysdeps/loongarch/fpu/s_llrintf.c b/sysdeps/loongarch/fpu/s_llrintf.c
> new file mode 100644
> index 0000000000..c0b0adaf69
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_llrintf.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +
> +long long int
> +__llrintf (float x)
> +{
> + asm volatile("frint.s \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> +libm_alias_float (__llrint, llrint)
> diff --git a/sysdeps/loongarch/fpu/s_logb.c b/sysdeps/loongarch/fpu/s_logb.c
> new file mode 100644
> index 0000000000..44fd5d7c40
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_logb.c
> @@ -0,0 +1,30 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +
> +double
> +__logb (double x)
> +{
> + asm volatile("fabs.d \t%0, %1" : "=f" (x) : "f" (x));
> + asm volatile("flogb.d \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> +libm_alias_double (__logb, logb)
> diff --git a/sysdeps/loongarch/fpu/s_logbf.c b/sysdeps/loongarch/fpu/s_logbf.c
> new file mode 100644
> index 0000000000..6c1ab23b5e
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_logbf.c
> @@ -0,0 +1,30 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +
> +float
> +__logbf (float x)
> +{
> + asm volatile("fabs.s \t%0, %1" : "=f" (x) : "f" (x));
> + asm volatile("flogb.s \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> +libm_alias_float (__logb, logb)
> diff --git a/sysdeps/loongarch/fpu/s_lrint.c b/sysdeps/loongarch/fpu/s_lrint.c
> new file mode 100644
> index 0000000000..f4185f2271
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_lrint.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +
> +long int
> +__lrint (double x)
> +{
> + asm volatile("frint.d \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> +libm_alias_double (__lrint, lrint)
> diff --git a/sysdeps/loongarch/fpu/s_lrintf.c b/sysdeps/loongarch/fpu/s_lrintf.c
> new file mode 100644
> index 0000000000..48197b21c4
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_lrintf.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +
> +long int
> +__lrintf (float x)
> +{
> + asm volatile("frint.s \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> +libm_alias_float (__lrint, lrint)
> diff --git a/sysdeps/loongarch/fpu/s_rint.c b/sysdeps/loongarch/fpu/s_rint.c
> new file mode 100644
> index 0000000000..28638eb9e0
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_rint.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-double.h>
> +
> +double
> +__rint (double x)
> +{
> + asm volatile("frint.d \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> +libm_alias_double (__rint, rint)
> diff --git a/sysdeps/loongarch/fpu/s_rintf.c b/sysdeps/loongarch/fpu/s_rintf.c
> new file mode 100644
> index 0000000000..ce3815f5e0
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_rintf.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +#include <libm-alias-float.h>
> +
> +float
> +__rintf (float x)
> +{
> + asm volatile("frint.s \t%0, %1" : "=f" (x) : "f" (x));
> + return x;
> +}
> +libm_alias_float (__rint, rint)
> diff --git a/sysdeps/loongarch/fpu/s_scalbn.c b/sysdeps/loongarch/fpu/s_scalbn.c
> new file mode 100644
> index 0000000000..4c4bbf8be9
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_scalbn.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +
> +double
> +__scalbn (double x, int fn)
> +{
> + double tmp;
> + asm volatile("movgr2fr.d \t%0, %1" : "=f" (tmp) : "r" (fn));
> + asm volatile("fscaleb.d \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (tmp));
> + return x;
> +}
> diff --git a/sysdeps/loongarch/fpu/s_scalbnf.c b/sysdeps/loongarch/fpu/s_scalbnf.c
> new file mode 100644
> index 0000000000..ff6dc6d3f8
> --- /dev/null
> +++ b/sysdeps/loongarch/fpu/s_scalbnf.c
> @@ -0,0 +1,29 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +#define NO_MATH_REDIRECT
> +#include <math.h>
> +
> +float
> +__scalbnf (float x, int fn)
> +{
> + float tmp;
> + asm volatile("movgr2fr.w \t%0, %1" : "=f" (tmp) : "r" (fn));
> + asm volatile("fscaleb.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (tmp));
> + return x;
> +}
> diff --git a/sysdeps/loongarch/fpu_control.h b/sysdeps/loongarch/fpu_control.h
> index f482395dba..13436335fe 100644
> --- a/sysdeps/loongarch/fpu_control.h
> +++ b/sysdeps/loongarch/fpu_control.h
> @@ -97,6 +97,23 @@ extern void __loongarch_fpu_setcw (fpu_control_t) __THROW;
> /* Default control word set at startup. */
> extern fpu_control_t __fpu_control;
>
> +# define _FCLASS_SNAN (1 << 0)
> +# define _FCLASS_QNAN (1 << 1)
> +# define _FCLASS_MINF (1 << 2)
> +# define _FCLASS_MNORM (1 << 3)
> +# define _FCLASS_MSUBNORM (1 << 4)
> +# define _FCLASS_MZERO (1 << 5)
> +# define _FCLASS_PINF (1 << 6)
> +# define _FCLASS_PNORM (1 << 7)
> +# define _FCLASS_PSUBNORM (1 << 8)
> +# define _FCLASS_PZERO (1 << 9)
> +
> +# define _FCLASS_ZERO (_FCLASS_MZERO | _FCLASS_PZERO)
> +# define _FCLASS_SUBNORM (_FCLASS_MSUBNORM | _FCLASS_PSUBNORM)
> +# define _FCLASS_NORM (_FCLASS_MNORM | _FCLASS_PNORM)
> +# define _FCLASS_INF (_FCLASS_MINF | _FCLASS_PINF)
> +# define _FCLASS_NAN (_FCLASS_SNAN | _FCLASS_QNAN)
> +
> #endif /* __loongarch_soft_float */
>
> #endif /* fpu_control.h */
next prev parent reply other threads:[~2022-11-03 12:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-03 12:14 [PATCH 0/1] " Xiaolin Tang
2022-11-03 12:14 ` [PATCH 1/1] " Xiaolin Tang
2022-11-03 12:42 ` Adhemerval Zanella Netto [this message]
2022-11-03 14:39 ` Xi Ruoyao
2022-11-03 16:14 ` Adhemerval Zanella Netto
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