diff options
Diffstat (limited to 'src/math/log.c')
| -rw-r--r-- | src/math/log.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/src/math/log.c b/src/math/log.c index 1bb006a3..98051205 100644 --- a/src/math/log.c +++ b/src/math/log.c @@ -74,8 +74,6 @@ Lg5 = 1.818357216161805012e-01, /* 3FC74664 96CB03DE */ Lg6 = 1.531383769920937332e-01, /* 3FC39A09 D078C69F */ Lg7 = 1.479819860511658591e-01; /* 3FC2F112 DF3E5244 */ -static const double zero = 0.0; - double log(double x) { double hfsq,f,s,z,R,w,t1,t2,dk; @@ -87,9 +85,9 @@ double log(double x) k = 0; if (hx < 0x00100000) { /* x < 2**-1022 */ if (((hx&0x7fffffff)|lx) == 0) - return -two54/zero; /* log(+-0)=-inf */ + return -two54/0.0; /* log(+-0)=-inf */ if (hx < 0) - return (x-x)/zero; /* log(-#) = NaN */ + return (x-x)/0.0; /* log(-#) = NaN */ /* subnormal number, scale up x */ k -= 54; x *= two54; @@ -104,9 +102,9 @@ double log(double x) k += i>>20; f = x - 1.0; if ((0x000fffff&(2+hx)) < 3) { /* -2**-20 <= f < 2**-20 */ - if (f == zero) { + if (f == 0.0) { if (k == 0) { - return zero; + return 0.0; } dk = (double)k; return dk*ln2_hi + dk*ln2_lo; |