hrev53693 adds 1 changeset to branch 'master'
old head: a1e74397a17ddc927e5f24eec99c4edb6b5921e3
new head: dda1013cdb4781c4d2625a45ff9d84983e9eec86
overview:
https://git.haiku-os.org/haiku/log/?qt=range&q=dda1013cdb47+%5Ea1e74397a17d
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dda1013cdb47: posix/math: Use the GCC built-ins when possible for isnan(), etc.
glibc does the same. Technically, some of these builtins did
not exist / did not work before GCC 4.4, but the source tree
cannot be compiled with a version that old anyway.
x86_64 and _x86 need to keep the old functions for now, of
course; but all other architectures can probably feel free
to drop the s_isnan, etc. functions from their glibc.
This will make upcoming patches easier...
Change-Id: Ifb76ea74076553228c9741a8ee3ecb0e1cf736a3
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2076
Reviewed-by: waddlesplash <waddlesplash@xxxxxxxxx>
[ Augustin Cavalier <waddlesplash@xxxxxxxxx> ]
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Revision: hrev53693
Commit: dda1013cdb4781c4d2625a45ff9d84983e9eec86
URL: https://git.haiku-os.org/haiku/commit/?id=dda1013cdb47
Author: Augustin Cavalier <waddlesplash@xxxxxxxxx>
Date: Sun Jan 5 01:09:24 2020 UTC
Committer: Adrien Destugues <pulkomandy@xxxxxxxxx>
Commit-Date: Mon Jan 6 07:44:30 2020 UTC
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1 file changed, 10 insertions(+), 1 deletion(-)
headers/posix/math.h | 11 ++++++++++-
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diff --git a/headers/posix/math.h b/headers/posix/math.h
index d094d0e970..a4bb33ef1f 100644
--- a/headers/posix/math.h
+++ b/headers/posix/math.h
@@ -338,7 +338,15 @@ extern float y1f(float x);
extern float ynf(int x, float y);
extern float lgammaf_r(float x, int *y);
-
+#if __GNUC__ >= 7 || defined(__clang__)
+#define fpclassify(value) \
+ __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL,
FP_ZERO, (value))
+#define signbit(value) __builtin_signbit((value))
+#define isfinite(value) __builtin_isfinite((value))
+#define isnormal(value) __builtin_isnormal((value))
+#define isnan(value) __builtin_isnan((value))
+#define isinf(value) __builtin_isinf_sign((value))
+#else
/* prototypes for functions used in the macros below */
extern int __fpclassifyf(float value);
extern int __signbitf(float value);
@@ -391,6 +399,7 @@ extern int __isinf(double value);
(sizeof(value) == sizeof(float) ? __isinff(value)
\
: sizeof(value) == sizeof(double) ? __isinf(value)
\
: __isinfl(value))
+#endif
#if __GNUC__ >= 4
#define isgreater(x, y) __builtin_isgreater((x), (y))
