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authorRich Felker <dalias@aerifal.cx>2013-11-26 23:26:37 -0500
committerRich Felker <dalias@aerifal.cx>2013-11-26 23:26:37 -0500
commita663c930196b50194921e7ee685d0704ac32f6f4 (patch)
treeebd0c3d8fc96002ff6049a90c31c7db8ec9d1a74
parentf63b8c8c455929f0f46cc017b4c675faeef901c4 (diff)
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adjust fallback INFINITY definition for FLT_EVAL_METHOD==2 case
on archs with excess precision, the floating point constant 1e40f may be evaluated such that it does not actually produce an infinity. 1e5000f is sufficiently large to produce an infinity for all supported floating point formats. note that this definition of INFINITY is only used for old or non-GNUC compilers anyway; despite being a portable, conforming definition, it leads to erroneous warnings on many compilers and thus using the builtin is preferred.
-rw-r--r--include/math.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/math.h b/include/math.h
index ec04a8a7..bbee62e2 100644
--- a/include/math.h
+++ b/include/math.h
@@ -16,7 +16,7 @@ extern "C" {
#define INFINITY __builtin_inff()
#else
#define NAN (0.0f/0.0f)
-#define INFINITY 1e40f
+#define INFINITY 1e5000f
#endif
#define HUGE_VALF INFINITY