diff options
| author | Roger Sayle <roger@eyesopen.com> | 2004-06-07 20:50:14 +0000 |
|---|---|---|
| committer | Roger Sayle <roger@eyesopen.com> | 2004-06-07 20:50:14 +0000 |
| commit | 2e8b0bf7710b1e969cfece7da4ad8ca4a23cf07d (patch) | |
| tree | cf683ee1008a7ca53b18dd77effb242f594c9a57 /gcc/real.h | |
| parent | 16b5f7e65cb8db3843a5b00fe8947ad814e8871b (diff) | |
* real.c (real_copysign): New function to implement libm's copysign.
* real.h (real_copysign): Prototype here.
* fold-const.c (tree_expr_nonnegative_p): The result of sqrt, sqrtf
and sqrtl can be negative, as sqrt(-0.0) = -0.0. Correct whitespace.
* builtins.c (fold_builtin_isascii, fold_builtin_toascii,
fold_builtin_isdigit): Add function prototypes.
(fold_builtin_copysign): New function to fold copysign, copysignf
and copysignl. Optimize copysign(x,x) as x. Evaluate copysign of
constant arguments at compile-time using real_copysign. Fold
copysign(X,Y) as fabs(X) if Y is always non-negative.
(fold_builtin_1): Correct minor whitespace/style issues. Call
fold_builtin_copysign for BUILT_IN_COPYSIGN{,F,L}.
* gcc.dg/builtins-41.c: New test case.
* gcc.dg/builtins-42.c: New test case.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@82721 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/real.h')
| -rw-r--r-- | gcc/real.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/real.h b/gcc/real.h index 475ab4563fe..4200e5ef702 100644 --- a/gcc/real.h +++ b/gcc/real.h @@ -384,4 +384,7 @@ extern void real_ceil (REAL_VALUE_TYPE *, enum machine_mode, extern void real_round (REAL_VALUE_TYPE *, enum machine_mode, const REAL_VALUE_TYPE *); +/* Set the sign of R to the sign of X. */ +extern void real_copysign (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *); + #endif /* ! GCC_REAL_H */ |