diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-27 10:03:06 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-27 10:22:36 -0300 |
| commit | 8b3c945b3f5365834261f3e78225dabc441f467f (patch) | |
| tree | 0776841bf29437b37557d33d7d9194d1eda19b5d | |
| parent | 16da0a4727b145ae384b791839821c294eee1626 (diff) | |
| download | glibc-8b3c945b3f5365834261f3e78225dabc441f467f.zip glibc-8b3c945b3f5365834261f3e78225dabc441f467f.tar.gz glibc-8b3c945b3f5365834261f3e78225dabc441f467f.tar.bz2 | |
mips: Implement truncf with hardware floating-point rounding instruction
| -rw-r--r-- | sysdeps/mips/fpu/roundf_to_integer.h | 5 | ||||
| -rw-r--r-- | sysdeps/mips/fpu/s_truncf.c | 36 |
2 files changed, 41 insertions, 0 deletions
diff --git a/sysdeps/mips/fpu/roundf_to_integer.h b/sysdeps/mips/fpu/roundf_to_integer.h index 0893220..f1a7fef 100644 --- a/sysdeps/mips/fpu/roundf_to_integer.h +++ b/sysdeps/mips/fpu/roundf_to_integer.h @@ -27,6 +27,7 @@ enum round_mode { CEIL, FLOOR, + TRUNC, }; static inline float @@ -47,6 +48,10 @@ round_to_integer_float (enum round_mode mode, float x) case FLOOR: asm ("floor.l.s %0, %0" : "+f" (r)); break; + case TRUNC: + asm ("trunc.l.s %0, %0" : "+f" (r)); + break; + break; } libc_fesetenvf (&fe); diff --git a/sysdeps/mips/fpu/s_truncf.c b/sysdeps/mips/fpu/s_truncf.c new file mode 100644 index 0000000..f108c0e --- /dev/null +++ b/sysdeps/mips/fpu/s_truncf.c @@ -0,0 +1,36 @@ +/* Round to integer, toward zero. MIPS version. + Copyright (C) 2023 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/>. */ + +#if ((__mips_fpr == 64) \ + && (__mips_hard_float == 1) \ + && ((__mips == 32 && __mips_isa_rev > 1) || __mips == 64)) + +#define NO_MATH_REDIRECT +#include <math.h> +#include <roundf_to_integer.h> +#include <libm-alias-float.h> + +float +__truncf (float x) +{ + return round_to_integer_float (TRUNC, x); +} +libm_alias_float (__trunc, trunc) +#else +# include <sysdeps/ieee754/flt-32/s_truncf.c> +#endif |