diff options
Diffstat (limited to 'usr/src/lib/libm/common/C/logb.c')
| -rw-r--r-- | usr/src/lib/libm/common/C/logb.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/usr/src/lib/libm/common/C/logb.c b/usr/src/lib/libm/common/C/logb.c index 71c31e069c..11e0562643 100644 --- a/usr/src/lib/libm/common/C/logb.c +++ b/usr/src/lib/libm/common/C/logb.c @@ -27,16 +27,14 @@ * Use is subject to license terms. */ -#if defined(ELFOBJ) #pragma weak logb = __logb #pragma weak _logb = __logb -#endif #include "libm.h" #include "xpg6.h" /* __xpg6 */ #define _C99SUSv3_logb _C99SUSv3_logb_subnormal_is_like_ilogb -#if defined(USE_FPSCALE) || defined(__x86) +#if defined(__x86) static const double two52 = 4503599627370496.0; #else /* @@ -59,7 +57,7 @@ ilogb_subnormal(unsigned v, unsigned w) { v <<= 1; return (r + ((0xffffaa50 >> v) & 0x3)); } -#endif /* defined(USE_FPSCALE) */ +#endif /* defined(__x86) */ double logb(double x) { @@ -69,7 +67,7 @@ logb(double x) { if ((px[LOWORD] | k) == 0) return (_SVID_libm_err(x, x, 45)); else if ((__xpg6 & _C99SUSv3_logb) != 0) { -#if defined(USE_FPSCALE) || defined(__x86) +#if defined(__x86) x *= two52; return ((double) (((px[HIWORD] & 0x7ff00000) >> 20) - 1075)); |