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*[glibc] LoongArch: Hard Float Support for float-point classification functions.@ 2022-11-14 2:03 Yinyu Cai0 siblings, 0 replies; only message in thread From: Yinyu Cai @ 2022-11-14 2:03 UTC (permalink / raw) To: glibc-cvs https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5fe2647d3168194f3534bbf1c02930c891a25977 commit 5fe2647d3168194f3534bbf1c02930c891a25977 Author: Xiaolin Tang <tangxiaolin@loongson.cn> Date: Mon Nov 7 22:05:16 2022 +0800 LoongArch: Hard Float Support for float-point classification functions. Use hardware Floating-point instruction fclass.{s/d} to implement classification functions, i.e finite{f/ }, fpclassify{f/ }, isnan{f/ }, isinf{f/ }, issignaling{f/ }. * sysdeps/loongarch/fpu/s_finite.c: New file. * sysdeps/loongarch/fpu/s_finitef.c: Likewise. * sysdeps/loongarch/fpu/s_fpclassify.c: Likewise. * sysdeps/loongarch/fpu/s_fpclassifyf.c: Likewise. * sysdeps/loongarch/fpu/s_isinf.c: Likewise. * sysdeps/loongarch/fpu/s_isinff.c: Likewise. * sysdeps/loongarch/fpu/s_isnan.c: Likewise. * sysdeps/loongarch/fpu/s_isnanf.c: Likewise. * sysdeps/loongarch/fpu/s_issignaling.c: Likewise. * sysdeps/loongarch/fpu/s_issignalingf.c: Likewise. * sysdeps/loongarch/fpu_control.h: Add _FCLASS_* macro. Diff: --- sysdeps/loongarch/fpu/s_finite.c | 30 +++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_finitef.c | 30 +++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_fpclassify.c | 38 ++++++++++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_fpclassifyf.c | 38 ++++++++++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_isinf.c | 30 +++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_isinff.c | 30 +++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_isnan.c | 31 +++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_isnanf.c | 31 +++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_issignaling.c | 29 ++++++++++++++++++++++++++ sysdeps/loongarch/fpu/s_issignalingf.c | 29 ++++++++++++++++++++++++++ sysdeps/loongarch/fpu_control.h | 17 +++++++++++++++ 11 files changed, 333 insertions(+) diff --git a/sysdeps/loongarch/fpu/s_finite.c b/sysdeps/loongarch/fpu/s_finite.c new file mode 100644 index 0000000000..a2e98f0b60 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_finite.c @@ -0,0 +1,30 @@ +/* finite(). LoongArch version. + 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 +__finite (double x) +{ + int x_cond; + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x)); + return x_cond & ~(_FCLASS_INF | _FCLASS_NAN); +} +hidden_def (__finite) +weak_alias (__finite, finite) diff --git a/sysdeps/loongarch/fpu/s_finitef.c b/sysdeps/loongarch/fpu/s_finitef.c new file mode 100644 index 0000000000..9ffab38abd --- /dev/null +++ b/sysdeps/loongarch/fpu/s_finitef.c @@ -0,0 +1,30 @@ +/* finitef(). LoongArch version. + 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 +__finitef (float x) +{ + int x_cond; + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x)); + return x_cond & ~(_FCLASS_INF | _FCLASS_NAN); +} +hidden_def (__finitef) +weak_alias (__finitef, finitef) diff --git a/sysdeps/loongarch/fpu/s_fpclassify.c b/sysdeps/loongarch/fpu/s_fpclassify.c new file mode 100644 index 0000000000..3f4d95da66 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fpclassify.c @@ -0,0 +1,38 @@ +/* fpclassify(). LoongArch version. + Copyright (C) 2017-2022 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 (__glibc_likely (!!(cls & _FCLASS_NORM))) + return FP_NORMAL; + if (__glibc_likely (!!(cls & _FCLASS_ZERO))) + return FP_ZERO; + if (__glibc_likely (!!(cls & _FCLASS_SUBNORM))) + return FP_SUBNORMAL; + if (__glibc_likely (!!(cls & _FCLASS_INF))) + return FP_INFINITE; + return FP_NAN; +} +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..b7c8b25337 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fpclassifyf.c @@ -0,0 +1,38 @@ +/* Copyright (C) 2017-2022 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 (__glibc_likely (!!(cls & _FCLASS_NORM))) + return FP_NORMAL; + if (__glibc_likely (!!(cls & _FCLASS_ZERO))) + return FP_ZERO; + if (__glibc_likely (!!(cls & _FCLASS_SUBNORM))) + return FP_SUBNORMAL; + if (__glibc_likely (!!(cls & _FCLASS_INF))) + return FP_INFINITE; + return FP_NAN; +} +libm_hidden_def (__fpclassifyf) diff --git a/sysdeps/loongarch/fpu/s_isinf.c b/sysdeps/loongarch/fpu/s_isinf.c new file mode 100644 index 0000000000..c7a6784185 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_isinf.c @@ -0,0 +1,30 @@ +/* isinf(). LoongArch version. + Copyright (C) 2017-2022 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 +__isinf (double x) +{ + int x_cond; + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x)); + return -((x_cond & _FCLASS_MINF) ? 1 : 0) | ((x_cond & _FCLASS_PINF) ? 1 : 0); +} +hidden_def (__isinf) +weak_alias (__isinf, isinf) diff --git a/sysdeps/loongarch/fpu/s_isinff.c b/sysdeps/loongarch/fpu/s_isinff.c new file mode 100644 index 0000000000..dcb4e04ec8 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_isinff.c @@ -0,0 +1,30 @@ +/* isinff(). LoongArch version. + Copyright (C) 2017-2022 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 +__isinff (float x) +{ + int x_cond; + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x)); + return -((x_cond & _FCLASS_MINF) ? 1 : 0) | ((x_cond & _FCLASS_PINF) ? 1 : 0); +} +hidden_def (__isinff) +weak_alias (__isinff, isinff) diff --git a/sysdeps/loongarch/fpu/s_isnan.c b/sysdeps/loongarch/fpu/s_isnan.c new file mode 100644 index 0000000000..62bb2e2fad --- /dev/null +++ b/sysdeps/loongarch/fpu/s_isnan.c @@ -0,0 +1,31 @@ +/* isnan(). LoongArch version. + 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 +__isnan (double x) +{ + int x_cond; + asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x)); + + return (x_cond & _FCLASS_NAN) != 0; +} +hidden_def (__isnan) +weak_alias (__isnan, isnan) diff --git a/sysdeps/loongarch/fpu/s_isnanf.c b/sysdeps/loongarch/fpu/s_isnanf.c new file mode 100644 index 0000000000..bbdedb8429 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_isnanf.c @@ -0,0 +1,31 @@ +/* isnanf(). LoongArch version. + 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 +__isnanf (float x) +{ + int x_cond; + asm volatile ("fclass.s \t%0, %1" : "=f" (x_cond) : "f" (x)); + + return (x_cond & _FCLASS_NAN) != 0; +} +hidden_def (__isnanf) +weak_alias (__isnanf, isnanf) diff --git a/sysdeps/loongarch/fpu/s_issignaling.c b/sysdeps/loongarch/fpu/s_issignaling.c new file mode 100644 index 0000000000..4fe0e2b7a9 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_issignaling.c @@ -0,0 +1,29 @@ +/* issignaling(). LoongArch version. + 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..d82abb0e74 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_issignalingf.c @@ -0,0 +1,29 @@ +/* issignalingf(). LoongArch version. + 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_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 */ ^ permalink raw reply [flat|nested] only message in thread

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