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Fix various nits in style and comments that were pointed out by bde.

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Code changes verified with md5.
This commit is contained in:
David Schultz 2010-12-07 02:19:15 +00:00
parent c67712a089
commit 63687c8b08
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=216247
4 changed files with 16 additions and 13 deletions
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7
lib/msun/man/math.3
View File

@ -195,7 +195,7 @@ yn Bessel function of the second kind of the order n
.El
.Pp
The routines
in this section may not produce a result that is correctly rounded,
in this section might not produce a result that is correctly rounded,
so reproducible results cannot be guaranteed across platforms.
For most of these functions, however, incorrect rounding occurs
rarely, and then only in very-close-to-halfway cases.
@ -231,9 +231,8 @@ Many of the routines to compute transcendental functions produce
inaccurate results in other than the default rounding mode.
.Pp
On the i386 platform, trigonometric argument reduction is not
performed accurately for very large arguments, resulting in errors
greater than 1
.Em ulp
performed accurately for huge arguments, resulting in
large errors
for such arguments to
.Fn cos ,
.Fn sin ,

8
lib/msun/src/e_log2.c
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@ -14,8 +14,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/* log2(x)
* Return the base 2 logarithm of x.
/*
* Return the base 2 logarithm of x. See k_log.c for details on the algorithm.
*/
#include "math.h"
@ -24,8 +24,8 @@ __FBSDID("$FreeBSD$");
static const double
two54 = 1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */
ivln2hi = 0x1.71547652000p+0,
ivln2lo = 0x1.705fc2eefa2p-33;
ivln2hi = 1.44269504072144627571e+00, /* 0x3ff71547, 0x65200000 */
ivln2lo = 1.67517131648865118353e-10; /* 0x3de705fc, 0x2eefa200 */
static const double zero = 0.0;

8
lib/msun/src/e_log2f.c
View File

@ -12,14 +12,18 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Return the base 2 logarithm of x. See k_log.c for details on the algorithm.
*/
#include "math.h"
#include "math_private.h"
#include "k_logf.h"
static const float
two25 = 3.3554432000e+07, /* 0x4c000000 */
ivln2hi = 0x1.716p+0f,
ivln2lo = -0x1.7135a8fa03d11p-13;
ivln2hi = 1.4428710938e+00, /* 0x3fb8b000 */
ivln2lo = -1.7605285393e-04; /* 0xb9389ad4 */
static const float zero = 0.0;

6
lib/msun/src/k_logf.h
View File

@ -12,8 +12,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/* __kernel_logf(x)
* Return log(x) - (x-1) for x in ~[sqrt(2)/2, sqrt(2)].
/*
* float version of __kernel_log(x). See k_log.c for details.
*/
static const float
@ -33,7 +33,7 @@ __kernel_logf(float x)
f = x-(float)1.0;
if((0x007fffff&(0x8000+ix))<0xc000) { /* -2**-9 <= f < 2**-9 */
if(f==0.0) return 0.0;
if(f==0.0f) return 0.0f;
return f*f*((float)0.33333333333333333*f-(float)0.5);
}
s = f/((float)2.0+f);