diff options
Diffstat (limited to 'newlib/libm/common/sf_ilogb.c')
| -rw-r--r-- | newlib/libm/common/sf_ilogb.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/newlib/libm/common/sf_ilogb.c b/newlib/libm/common/sf_ilogb.c index ec59406e1..28191c2c6 100644 --- a/newlib/libm/common/sf_ilogb.c +++ b/newlib/libm/common/sf_ilogb.c @@ -13,8 +13,8 @@ * ==================================================== */ -#include "fdlibm.h" #include <limits.h> +#include "fdlibm.h" #ifdef __STDC__ int ilogbf(float x) @@ -28,11 +28,14 @@ GET_FLOAT_WORD(hx,x); hx &= 0x7fffffff; if(FLT_UWORD_IS_ZERO(hx)) - return - INT_MAX; /* ilogb(0) = 0x80000001 */ + return FP_ILOGB0; /* ilogb(0) = special case error */ if(FLT_UWORD_IS_SUBNORMAL(hx)) { for (ix = -126,hx<<=8; hx>0; hx<<=1) ix -=1; return ix; } + #if FP_ILOGBNAN != INT_MAX + else if (FLT_UWORD_IS_NAN(hx)) return FP_ILOGBNAN; /* NAN */ + #endif else if (!FLT_UWORD_IS_FINITE(hx)) return INT_MAX; else return (hx>>23)-127; } |