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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-26 16:43:54 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-27 10:22:36 -0300 |
| commit | 28e3562609428955f34960abe83d530a116d32cf (patch) | |
| tree | 10ac5734f50fe941e7ee7ddf4778e905e895484e | |
| parent | 96af11c2077c95860317169303c3ce25bcc0f43f (diff) | |
| download | glibc-28e3562609428955f34960abe83d530a116d32cf.zip glibc-28e3562609428955f34960abe83d530a116d32cf.tar.gz glibc-28e3562609428955f34960abe83d530a116d32cf.tar.bz2 | |
mips: Implement floor with hardware floating-point rounding instruction
| -rw-r--r-- | sysdeps/mips/fpu/round_to_integer.h | 4 | ||||
| -rw-r--r-- | sysdeps/mips/fpu/s_floor.c | 36 |
2 files changed, 40 insertions, 0 deletions
diff --git a/sysdeps/mips/fpu/round_to_integer.h b/sysdeps/mips/fpu/round_to_integer.h index 7ac6783..a2146e4 100644 --- a/sysdeps/mips/fpu/round_to_integer.h +++ b/sysdeps/mips/fpu/round_to_integer.h @@ -25,6 +25,7 @@ enum round_mode { CEIL, + FLOOR, }; static inline double @@ -42,6 +43,9 @@ round_to_integer_double (enum round_mode mode, double x) case CEIL: asm ("ceil.l.d %0, %0" : "+f" (r)); break; + case FLOOR: + asm ("floor.l.d %0, %0" : "+f" (r)); + break; } libc_fesetenv (&fe); diff --git a/sysdeps/mips/fpu/s_floor.c b/sysdeps/mips/fpu/s_floor.c new file mode 100644 index 0000000..52b60c7 --- /dev/null +++ b/sysdeps/mips/fpu/s_floor.c @@ -0,0 +1,36 @@ +/* Largest integral value not greater than argument. 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 <round_to_integer.h> +#include <libm-alias-double.h> + +double +__floor (double x) +{ + return round_to_integer_double (FLOOR, x); +} +libm_alias_double (__floor, floor) +#else +# include <sysdeps/ieee754/dbl-64/s_floor.c> +#endif |