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| author | Roger Sayle <roger@eyesopen.com> | 2004-06-07 20:50:14 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2004-06-07 20:50:14 +0000 |
| commit | 67057c537b7f1f895ff87f8616e8a122f886f1bf (patch) | |
| tree | cf683ee1008a7ca53b18dd77effb242f594c9a57 /gcc/real.h | |
| parent | f29b9db93eb2f3508d2376103af158675f1ee2b0 (diff) | |
| download | gcc-67057c537b7f1f895ff87f8616e8a122f886f1bf.tar.gz | |
real.c (real_copysign): New function to implement libm's copysign.
* 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.
From-SVN: r82721
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 */ |