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From: Alistair Francis <alistair23@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/alistair/rv32.next] RISC-V: Hard float support for 32-bit Date: Sun, 26 Apr 2020 02:25:58 +0000 (GMT) [thread overview] Message-ID: <20200426022558.619D53938C20@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=fb57a299eca5ac10252618f2968500a54277ce8a commit fb57a299eca5ac10252618f2968500a54277ce8a Author: Zong Li <zongbox@gmail.com> Date: Fri Nov 30 17:16:38 2018 +0800 RISC-V: Hard float support for 32-bit This patch contains hardware floating-point support for the RV32IF and RV32IFD Diff: --- sysdeps/riscv/rv32/rvd/s_lrint.c | 31 +++++++++++++++++++++++++++++++ sysdeps/riscv/rv32/rvd/s_lround.c | 31 +++++++++++++++++++++++++++++++ sysdeps/riscv/rv32/rvf/s_lrintf.c | 31 +++++++++++++++++++++++++++++++ sysdeps/riscv/rv32/rvf/s_lroundf.c | 31 +++++++++++++++++++++++++++++++ 4 files changed, 124 insertions(+) diff --git a/sysdeps/riscv/rv32/rvd/s_lrint.c b/sysdeps/riscv/rv32/rvd/s_lrint.c new file mode 100644 index 0000000000..df406aacb6 --- /dev/null +++ b/sysdeps/riscv/rv32/rvd/s_lrint.c @@ -0,0 +1,31 @@ +/* lrint(). RISC-V version. + Copyright (C) 2017-2020 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 + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <libm-alias-double.h> +#include <stdint.h> + +long int +__lrint (double x) +{ + int32_t res; + asm ("fcvt.w.d %0, %1" : "=r" (res) : "f" (x)); + return res; +} + +libm_alias_double (__lrint, lrint) diff --git a/sysdeps/riscv/rv32/rvd/s_lround.c b/sysdeps/riscv/rv32/rvd/s_lround.c new file mode 100644 index 0000000000..72aa2b179d --- /dev/null +++ b/sysdeps/riscv/rv32/rvd/s_lround.c @@ -0,0 +1,31 @@ +/* lround(). RISC-V version. + Copyright (C) 2017-2020 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 + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <libm-alias-double.h> +#include <stdint.h> + +long int +__lround (double x) +{ + int32_t res; + asm ("fcvt.w.d %0, %1, rmm" : "=r" (res) : "f" (x)); + return res; +} + +libm_alias_double (__lround, lround) diff --git a/sysdeps/riscv/rv32/rvf/s_lrintf.c b/sysdeps/riscv/rv32/rvf/s_lrintf.c new file mode 100644 index 0000000000..08d44fa738 --- /dev/null +++ b/sysdeps/riscv/rv32/rvf/s_lrintf.c @@ -0,0 +1,31 @@ +/* lrintf(). RISC-V version. + Copyright (C) 2017-2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <libm-alias-float.h> +#include <stdint.h> + +long int +__lrintf (float x) +{ + int32_t res; + asm ("fcvt.w.s %0, %1" : "=r" (res) : "f" (x)); + return res; +} + +libm_alias_float (__lrint, lrint) diff --git a/sysdeps/riscv/rv32/rvf/s_lroundf.c b/sysdeps/riscv/rv32/rvf/s_lroundf.c new file mode 100644 index 0000000000..9ff5d63d1c --- /dev/null +++ b/sysdeps/riscv/rv32/rvf/s_lroundf.c @@ -0,0 +1,31 @@ +/* lroundf(). RISC-V version. + Copyright (C) 2017-2020 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 + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <libm-alias-float.h> +#include <stdint.h> + +long int +__lroundf (float x) +{ + int32_t res; + asm ("fcvt.w.s %0, %1, rmm" : "=r" (res) : "f" (x)); + return res; +} + +libm_alias_float (__lround, lround)
next reply other threads:[~2020-04-26 2:25 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-04-26 2:25 Alistair Francis [this message] -- strict thread matches above, loose matches on Subject: below -- 2020-04-22 22:15 Alistair Francis
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