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author | Xiaolin Tang <tangxiaolin@loongson.cn> | 2022-11-07 22:08:20 +0800 |
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committer | caiyinyu <caiyinyu@loongson.cn> | 2022-11-14 10:02:42 +0800 |
commit | a10f9fb3ff37b98f0adc5bdc0b4c32920c0c540a (patch) | |
tree | 9649dea2ae1ba879f93c4134235d8d0bc28253d5 /sysdeps/loongarch | |
parent | 73e35174f5673d58cb8e1bd5f34c086a7759ff20 (diff) | |
download | glibc-a10f9fb3ff37b98f0adc5bdc0b4c32920c0c540a.tar.gz glibc-a10f9fb3ff37b98f0adc5bdc0b4c32920c0c540a.tar.xz glibc-a10f9fb3ff37b98f0adc5bdc0b4c32920c0c540a.zip |
LoongArch: Hard Float Support for fmaximum_mag{f/ }, fminimum_mag{f/ }.
Use hardware Floating-point instruction f{maxa/mina}.{s/d}, fclass.{s/d} to implement fmaximum_mag{f/ }, fminimum_mag{f/ }. * sysdeps/loongarch/fpu/s_fmaximum_mag.c: New file. * sysdeps/loongarch/fpu/s_fmaximum_magf.c: Likewise. * sysdeps/loongarch/fpu/s_fminimum_mag.c: Likewise. * sysdeps/loongarch/fpu/s_fminimum_magf.c: Likewise.
Diffstat (limited to 'sysdeps/loongarch')
-rw-r--r-- | sysdeps/loongarch/fpu/s_fmaximum_mag.c | 40 | ||||
-rw-r--r-- | sysdeps/loongarch/fpu/s_fmaximum_magf.c | 40 | ||||
-rw-r--r-- | sysdeps/loongarch/fpu/s_fminimum_mag.c | 40 | ||||
-rw-r--r-- | sysdeps/loongarch/fpu/s_fminimum_magf.c | 40 |
4 files changed, 160 insertions, 0 deletions
diff --git a/sysdeps/loongarch/fpu/s_fmaximum_mag.c b/sysdeps/loongarch/fpu/s_fmaximum_mag.c new file mode 100644 index 0000000000..5aed0603e6 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fmaximum_mag.c @@ -0,0 +1,40 @@ +/* fmaximum_mag(). 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/>. */ + +#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 (__glibc_unlikely((x_cond | y_cond) & _FCLASS_NAN)) + return x * y; + else + { + 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_magf.c b/sysdeps/loongarch/fpu/s_fmaximum_magf.c new file mode 100644 index 0000000000..29beb88c22 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fmaximum_magf.c @@ -0,0 +1,40 @@ +/* fmaximum_magf(). 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/>. */ + +#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 (__glibc_unlikely((x_cond | y_cond) & _FCLASS_NAN)) + return x * y; + else + { + 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_fminimum_mag.c b/sysdeps/loongarch/fpu/s_fminimum_mag.c new file mode 100644 index 0000000000..f477498d6e --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fminimum_mag.c @@ -0,0 +1,40 @@ +/* fminimum_mag(). 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/>. */ + +#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 (__glibc_unlikely((x_cond | y_cond) & _FCLASS_NAN)) + return x * y; + else + { + 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_magf.c b/sysdeps/loongarch/fpu/s_fminimum_magf.c new file mode 100644 index 0000000000..d0563fc255 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fminimum_magf.c @@ -0,0 +1,40 @@ +/* fminimum_magf(). 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/>. */ + +#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 (__glibc_unlikely((x_cond | y_cond) & _FCLASS_NAN)) + return x * y; + else + { + asm volatile ("fmina.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y)); + return x; + } +} +libm_alias_float (__fminimum_mag, fminimum_mag) |