diff options
Diffstat (limited to 'src/math/logbf.c')
-rw-r--r-- | src/math/logbf.c | 14 |
1 files changed, 6 insertions, 8 deletions
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 <limits.h> #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); } |