From 52bcf3f5fb3251dca4df5b97b01543160340b31b Mon Sep 17 00:00:00 2001 From: Szabolcs Nagy Date: Tue, 13 Nov 2012 00:45:51 +0100 Subject: math: fix logb*.c exceptions now that ilogb raises invalid --- src/math/logbf.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) (limited to 'src/math/logbf.c') diff --git a/src/math/logbf.c b/src/math/logbf.c index 934827f8..950d3569 100644 --- a/src/math/logbf.c +++ b/src/math/logbf.c @@ -1,12 +1,10 @@ -#include #include "libm.h" -float logbf(float x) { - int i = ilogbf(x); - - if (i == FP_ILOGB0) - return -1.0f/fabsf(x); - if (i == FP_ILOGBNAN || i == INT_MAX) +float logbf(float x) +{ + if (!isfinite(x)) return x * x; - return i; + if (x == 0) + return -1/(x+0); + return ilogbf(x); } -- cgit v1.2.1