diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32/s_ilogbf.c')
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_ilogbf.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/ieee754/flt-32/s_ilogbf.c b/sysdeps/ieee754/flt-32/s_ilogbf.c index e652b93..ea3dc13 100644 --- a/sysdeps/ieee754/flt-32/s_ilogbf.c +++ b/sysdeps/ieee754/flt-32/s_ilogbf.c @@ -17,6 +17,7 @@ static char rcsid[] = "$NetBSD: s_ilogbf.c,v 1.4 1995/05/10 20:47:31 jtc Exp $"; #endif +#include <limits.h> #include "math.h" #include "math_private.h" @@ -39,6 +40,11 @@ static char rcsid[] = "$NetBSD: s_ilogbf.c,v 1.4 1995/05/10 20:47:31 jtc Exp $"; return ix; } else if (hx<0x7f800000) return (hx>>23)-127; - else return FP_ILOGBNAN; + else if (FP_ILOGBNAN != INT_MAX) { + /* ISO C99 requires ilogbf(+-Inf) == INT_MAX. */ + if (hx==0x7f800000) + return INT_MAX; + } + return FP_ILOGBNAN; } weak_alias (__ilogbf, ilogbf) |