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author | Xiaolin Tang <tangxiaolin@loongson.cn> | 2022-11-07 22:05:19 +0800 |
---|---|---|
committer | caiyinyu <caiyinyu@loongson.cn> | 2022-11-14 10:02:42 +0800 |
commit | 1ed6c7ab2e4c51251932daecb0d14bfa71c35aee (patch) | |
tree | e28d00cce45d490908346ec0e74f1c6c4ce14829 | |
parent | 5fe2647d3168194f3534bbf1c02930c891a25977 (diff) | |
download | glibc-1ed6c7ab2e4c51251932daecb0d14bfa71c35aee.zip glibc-1ed6c7ab2e4c51251932daecb0d14bfa71c35aee.tar.gz glibc-1ed6c7ab2e4c51251932daecb0d14bfa71c35aee.tar.bz2 |
LoongArch: Hard Float Support for fmaximum{f/ }, fminimum{f/ }.
Use hardware Floating-point instruction f{max/min}.{s/d}, fclass.{s/d}
to implement fmaximum{f/ }, fminimum{f/ }.
* sysdeps/loongarch/fpu/s_fmaximum.c: New file.
* sysdeps/loongarch/fpu/s_fmaximumf.c: Likewise.
* sysdeps/loongarch/fpu/s_fminimum.c: Likewise.
* sysdeps/loongarch/fpu/s_fminimumf.c: Likewise.
-rw-r--r-- | sysdeps/loongarch/fpu/s_fmaximum.c | 40 | ||||
-rw-r--r-- | sysdeps/loongarch/fpu/s_fmaximumf.c | 40 | ||||
-rw-r--r-- | sysdeps/loongarch/fpu/s_fminimum.c | 40 | ||||
-rw-r--r-- | sysdeps/loongarch/fpu/s_fminimumf.c | 40 |
4 files changed, 160 insertions, 0 deletions
diff --git a/sysdeps/loongarch/fpu/s_fmaximum.c b/sysdeps/loongarch/fpu/s_fmaximum.c new file mode 100644 index 0000000..af1c2bf --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fmaximum.c @@ -0,0 +1,40 @@ +/* fmaximum(). 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 (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 ("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_fmaximumf.c b/sysdeps/loongarch/fpu/s_fmaximumf.c new file mode 100644 index 0000000..da4dcb6 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fmaximumf.c @@ -0,0 +1,40 @@ +/* fmaximumf(). 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 +__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 (__glibc_unlikely((x_cond | y_cond) & _FCLASS_NAN)) + return x * y; + else + { + 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_fminimum.c b/sysdeps/loongarch/fpu/s_fminimum.c new file mode 100644 index 0000000..e395ff7 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fminimum.c @@ -0,0 +1,40 @@ +/* fminimum(). 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 (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 ("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_fminimumf.c b/sysdeps/loongarch/fpu/s_fminimumf.c new file mode 100644 index 0000000..680c5e7 --- /dev/null +++ b/sysdeps/loongarch/fpu/s_fminimumf.c @@ -0,0 +1,40 @@ +/* fminimumf(). 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 +__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 (__glibc_unlikely((x_cond | y_cond) & _FCLASS_NAN)) + return x * y; + else + { + asm volatile ("fmin.s \t%0, %1, %2" : "=f" (x) : "f" (x), "f" (y)); + return x; + } +} +libm_alias_float (__fminimum, fminimum) |