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code cleanup of named constants

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zero, one, two, half are replaced by const literals
The policy was to use the f suffix for float consts (1.0f),
but don't use suffix for long double consts (these consts
can be exactly represented as double).
This commit is contained in:
nsz
2012-03-19 23:41:19 +01:00
parent b03255af77
commit 0cbb654791
73 changed files with 513 additions and 623 deletions
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8
src/math/log2.c
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@ -27,8 +27,6 @@ two54 = 1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */
ivln2hi = 1.44269504072144627571e+00, /* 0x3ff71547, 0x65200000 */
ivln2lo = 1.67517131648865118353e-10; /* 0x3de705fc, 0x2eefa200 */
static const double zero = 0.0;
double log2(double x)
{
double f,hfsq,hi,lo,r,val_hi,val_lo,w,y;
@ -40,9 +38,9 @@ double log2(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;
@ -51,7 +49,7 @@ double log2(double x)
if (hx >= 0x7ff00000)
return x+x;
if (hx == 0x3ff00000 && lx == 0)
return zero; /* log(1) = +0 */
return 0.0; /* log(1) = +0 */
k += (hx>>20) - 1023;
hx &= 0x000fffff;
i = (hx+0x95f64) & 0x100000;