1/* k_tanf.c -- float version of k_tan.c
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 * Optimized by Bruce D. Evans.
4 */
5
6/*
7 * ====================================================
8 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
9 *
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
12 * is preserved.
13 * ====================================================
14 */
15
16#ifndef INLINE_KERNEL_TANDF
17#include <sys/cdefs.h>
| 1/* k_tanf.c -- float version of k_tan.c
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 * Optimized by Bruce D. Evans.
4 */
5
6/*
7 * ====================================================
8 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
9 *
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
12 * is preserved.
13 * ====================================================
14 */
15
16#ifndef INLINE_KERNEL_TANDF
17#include <sys/cdefs.h>
|
18__FBSDID("$FreeBSD: head/lib/msun/src/k_tanf.c 193368 2009-06-03 08:16:34Z ed $");
| 18__FBSDID("$FreeBSD: head/lib/msun/src/k_tanf.c 239192 2012-08-11 11:13:48Z dim $");
|
19#endif
20
21#include "math.h"
22#include "math_private.h"
23
24/* |tan(x)/x - t(x)| < 2**-25.5 (~[-2e-08, 2e-08]). */
25static const double
26T[] = {
27 0x15554d3418c99f.0p-54, /* 0.333331395030791399758 */
28 0x1112fd38999f72.0p-55, /* 0.133392002712976742718 */
29 0x1b54c91d865afe.0p-57, /* 0.0533812378445670393523 */
30 0x191df3908c33ce.0p-58, /* 0.0245283181166547278873 */
31 0x185dadfcecf44e.0p-61, /* 0.00297435743359967304927 */
32 0x1362b9bf971bcd.0p-59, /* 0.00946564784943673166728 */
33};
34
| 19#endif
20
21#include "math.h"
22#include "math_private.h"
23
24/* |tan(x)/x - t(x)| < 2**-25.5 (~[-2e-08, 2e-08]). */
25static const double
26T[] = {
27 0x15554d3418c99f.0p-54, /* 0.333331395030791399758 */
28 0x1112fd38999f72.0p-55, /* 0.133392002712976742718 */
29 0x1b54c91d865afe.0p-57, /* 0.0533812378445670393523 */
30 0x191df3908c33ce.0p-58, /* 0.0245283181166547278873 */
31 0x185dadfcecf44e.0p-61, /* 0.00297435743359967304927 */
32 0x1362b9bf971bcd.0p-59, /* 0.00946564784943673166728 */
33};
34
|
35#ifndef INLINE_KERNEL_TANDF
36extern
| 35#ifdef INLINE_KERNEL_TANDF
36static __inline
|
37#endif
| 37#endif
|
38__inline float
| 38float
|
39__kernel_tandf(double x, int iy)
40{
41 double z,r,w,s,t,u;
42
43 z = x*x;
44 /*
45 * Split up the polynomial into small independent terms to give
46 * opportunities for parallel evaluation. The chosen splitting is
--- 20 unchanged lines hidden --- | 39__kernel_tandf(double x, int iy)
40{
41 double z,r,w,s,t,u;
42
43 z = x*x;
44 /*
45 * Split up the polynomial into small independent terms to give
46 * opportunities for parallel evaluation. The chosen splitting is
--- 20 unchanged lines hidden --- |