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libgcc2.c (isnan): Use __builtin_isnan. 

* libgcc2.c (isnan): Use __builtin_isnan.
	(isfinite): Use __builtin_isfinite.
	(isinf): Use __builtin_isinf.

From-SVN: r264823
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Uros Bizjak 2018-10-03 22:29:10 +02:00 committed by Uros Bizjak
parent a41cc59de4
commit af8096fc2b
2 changed files with 15 additions and 15 deletions
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6
libgcc/ChangeLog
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@ -1,3 +1,9 @@
2018-10-03 Uros Bizjak <ubizjak@gmail.com>
* libgcc2.c (isnan): Use __builtin_isnan.
(isfinite): Use __builtin_isfinite.
(isinf): Use __builtin_isinf.
2018-09-26 Uros Bizjak <ubizjak@gmail.com>
* config/i386/crtprec.c (set_precision): Use fnstcw instead of fstcw.

12
libgcc/libgcc2.c
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@ -1939,15 +1939,9 @@ NAME (TYPE x, int m)
#define CONCAT2(A,B) _CONCAT2(A,B)
#define _CONCAT2(A,B) A##B
/* All of these would be present in a full C99 implementation of <math.h>
and <complex.h>. Our problem is that only a few systems have such full
implementations. Further, libgcc_s.so isn't currently linked against
libm.so, and even for systems that do provide full C99, the extra overhead
of all programs using libgcc having to link against libm. So avoid it. */
#define isnan(x) __builtin_expect ((x) != (x), 0)
#define isfinite(x) __builtin_expect (!isnan((x) - (x)), 1)
#define isinf(x) __builtin_expect (!isnan(x) & !isfinite(x), 0)
#define isnan(x) __builtin_isnan (x)
#define isfinite(x) __builtin_isfinite (x)
#define isinf(x) __builtin_isinf (x)
#define INFINITY CONCAT2(__builtin_huge_val, CEXT) ()
#define I 1i