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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-27 08:56:48 -0300 |
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| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-27 10:22:36 -0300 |
| commit | 16da0a4727b145ae384b791839821c294eee1626 (patch) | |
| tree | 7a28e29740d1379e9df878613b9f40d03e4b2123 | |
| parent | ac1ef8bd961d5225e890741f15c10966172cbdf4 (diff) | |
| download | glibc-16da0a4727b145ae384b791839821c294eee1626.tar.gz glibc-16da0a4727b145ae384b791839821c294eee1626.tar.xz glibc-16da0a4727b145ae384b791839821c294eee1626.zip | |
mips: Implement floorf with hardware floating-point rounding instruction
| -rw-r--r-- | sysdeps/mips/fpu/roundf_to_integer.h | 4 | ||||
| -rw-r--r-- | sysdeps/mips/fpu/s_floorf.c | 36 |
2 files changed, 40 insertions, 0 deletions
diff --git a/sysdeps/mips/fpu/roundf_to_integer.h b/sysdeps/mips/fpu/roundf_to_integer.h index 49f5960f24..089322072e 100644 --- a/sysdeps/mips/fpu/roundf_to_integer.h +++ b/sysdeps/mips/fpu/roundf_to_integer.h @@ -26,6 +26,7 @@ enum round_mode { CEIL, + FLOOR, }; static inline float @@ -43,6 +44,9 @@ round_to_integer_float (enum round_mode mode, float x) case CEIL: asm ("ceil.l.s %0, %0" : "+f" (r)); break; + case FLOOR: + asm ("floor.l.s %0, %0" : "+f" (r)); + break; } libc_fesetenvf (&fe); diff --git a/sysdeps/mips/fpu/s_floorf.c b/sysdeps/mips/fpu/s_floorf.c new file mode 100644 index 0000000000..e9f152eb42 --- /dev/null +++ b/sysdeps/mips/fpu/s_floorf.c @@ -0,0 +1,36 @@ +/* Round to nearest integer, away from 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 +__floorf (float x) +{ + return round_to_integer_float (FLOOR, x); +} +libm_alias_float (__floor, floor) +#else +# include <sysdeps/ieee754/flt-32/s_floorf.c> +#endif |