Style fixes and updates to comments.
Submitted by: bde
This commit is contained in:
parent
15d5d9deb1
commit
5ebf26f6a1
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=226375
@ -15,7 +15,8 @@
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__FBSDID("$FreeBSD$");
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/*
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* Return the base 10 logarithm of x. See k_log.c for details on the algorithm.
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* Return the base 10 logarithm of x. See e_log.c and k_log.h for most
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* comments.
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*/
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#include "math.h"
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@ -40,14 +41,14 @@ __ieee754_log10(double x)
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EXTRACT_WORDS(hx,lx,x);
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k=0;
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if (hx < 0x00100000) { /* x < 2**-1022 */
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if (((hx&0x7fffffff)|lx)==0)
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return -two54/zero; /* log(+-0)=-inf */
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if (hx<0) return (x-x)/zero; /* log(-#) = NaN */
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k -= 54; x *= two54; /* subnormal number, scale up x */
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k=0;
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if (hx < 0x00100000) { /* x < 2**-1022 */
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if (((hx&0x7fffffff)|lx)==0)
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return -two54/zero; /* log(+-0)=-inf */
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if (hx<0) return (x-x)/zero; /* log(-#) = NaN */
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k -= 54; x *= two54; /* subnormal number, scale up x */
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GET_HIGH_WORD(hx,x);
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}
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}
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if (hx >= 0x7ff00000) return x+x;
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k += (hx>>20)-1023;
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hx &= 0x000fffff;
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@ -13,7 +13,7 @@
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__FBSDID("$FreeBSD$");
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/*
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* Return the base 10 logarithm of x. See k_log.c for details on the algorithm.
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* Float version of e_log10.c. See the latter for most comments.
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*/
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#include "math.h"
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@ -37,14 +37,14 @@ __ieee754_log10f(float x)
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GET_FLOAT_WORD(hx,x);
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k=0;
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if (hx < 0x00800000) { /* x < 2**-126 */
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if ((hx&0x7fffffff)==0)
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return -two25/zero; /* log(+-0)=-inf */
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if (hx<0) return (x-x)/zero; /* log(-#) = NaN */
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k -= 25; x *= two25; /* subnormal number, scale up x */
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k=0;
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if (hx < 0x00800000) { /* x < 2**-126 */
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if ((hx&0x7fffffff)==0)
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return -two25/zero; /* log(+-0)=-inf */
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if (hx<0) return (x-x)/zero; /* log(-#) = NaN */
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k -= 25; x *= two25; /* subnormal number, scale up x */
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GET_FLOAT_WORD(hx,x);
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}
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}
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if (hx >= 0x7f800000) return x+x;
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k += (hx>>23)-127;
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hx &= 0x007fffff;
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@ -15,7 +15,8 @@
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__FBSDID("$FreeBSD$");
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/*
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* Return the base 2 logarithm of x. See k_log.c for details on the algorithm.
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* Return the base 2 logarithm of x. See e_log.c and k_log.h for most
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* comments.
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*/
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#include "math.h"
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@ -38,14 +39,14 @@ __ieee754_log2(double x)
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EXTRACT_WORDS(hx,lx,x);
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k=0;
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if (hx < 0x00100000) { /* x < 2**-1022 */
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if (((hx&0x7fffffff)|lx)==0)
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return -two54/zero; /* log(+-0)=-inf */
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if (hx<0) return (x-x)/zero; /* log(-#) = NaN */
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k -= 54; x *= two54; /* subnormal number, scale up x */
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k=0;
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if (hx < 0x00100000) { /* x < 2**-1022 */
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if (((hx&0x7fffffff)|lx)==0)
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return -two54/zero; /* log(+-0)=-inf */
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if (hx<0) return (x-x)/zero; /* log(-#) = NaN */
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k -= 54; x *= two54; /* subnormal number, scale up x */
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GET_HIGH_WORD(hx,x);
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}
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}
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if (hx >= 0x7ff00000) return x+x;
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k += (hx>>20)-1023;
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hx &= 0x000fffff;
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@ -13,7 +13,7 @@
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__FBSDID("$FreeBSD$");
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/*
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* Return the base 2 logarithm of x. See k_log.c for details on the algorithm.
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* Float version of e_log2.c. See the latter for most comments.
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*/
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#include "math.h"
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@ -35,14 +35,14 @@ __ieee754_log2f(float x)
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GET_FLOAT_WORD(hx,x);
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k=0;
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if (hx < 0x00800000) { /* x < 2**-126 */
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if ((hx&0x7fffffff)==0)
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return -two25/zero; /* log(+-0)=-inf */
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if (hx<0) return (x-x)/zero; /* log(-#) = NaN */
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k -= 25; x *= two25; /* subnormal number, scale up x */
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k=0;
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if (hx < 0x00800000) { /* x < 2**-126 */
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if ((hx&0x7fffffff)==0)
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return -two25/zero; /* log(+-0)=-inf */
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if (hx<0) return (x-x)/zero; /* log(-#) = NaN */
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k -= 25; x *= two25; /* subnormal number, scale up x */
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GET_FLOAT_WORD(hx,x);
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}
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}
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if (hx >= 0x7f800000) return x+x;
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k += (hx>>23)-127;
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hx &= 0x007fffff;
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