1/* e_expf.c -- float version of e_exp.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
4
5/*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 *
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
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 lint
| 1/* e_expf.c -- float version of e_exp.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
4
5/*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 *
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
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 lint
|
17static char rcsid[] = "$FreeBSD: head/lib/msun/src/e_expf.c 152947 2005-11-30 04:56:49Z bde $";
| 17static char rcsid[] = "$FreeBSD: head/lib/msun/src/e_expf.c 175468 2008-01-18 22:19:04Z das $";
|
18#endif
19
20#include "math.h"
21#include "math_private.h"
22
23static const float
24one = 1.0,
25halF[2] = {0.5,-0.5,},
26huge = 1.0e+30,
| 18#endif
19
20#include "math.h"
21#include "math_private.h"
22
23static const float
24one = 1.0,
25halF[2] = {0.5,-0.5,},
26huge = 1.0e+30,
|
27twom100 = 7.8886090522e-31, /* 2**-100=0x0d800000 */
| |
28o_threshold= 8.8721679688e+01, /* 0x42b17180 */
29u_threshold= -1.0397208405e+02, /* 0xc2cff1b5 */
30ln2HI[2] ={ 6.9314575195e-01, /* 0x3f317200 */
31 -6.9314575195e-01,}, /* 0xbf317200 */
32ln2LO[2] ={ 1.4286067653e-06, /* 0x35bfbe8e */
33 -1.4286067653e-06,}, /* 0xb5bfbe8e */
34invln2 = 1.4426950216e+00, /* 0x3fb8aa3b */
35P1 = 1.6666667163e-01, /* 0x3e2aaaab */
36P2 = -2.7777778450e-03, /* 0xbb360b61 */
37P3 = 6.6137559770e-05, /* 0x388ab355 */
38P4 = -1.6533901999e-06, /* 0xb5ddea0e */
39P5 = 4.1381369442e-08; /* 0x3331bb4c */
40
| 27o_threshold= 8.8721679688e+01, /* 0x42b17180 */
28u_threshold= -1.0397208405e+02, /* 0xc2cff1b5 */
29ln2HI[2] ={ 6.9314575195e-01, /* 0x3f317200 */
30 -6.9314575195e-01,}, /* 0xbf317200 */
31ln2LO[2] ={ 1.4286067653e-06, /* 0x35bfbe8e */
32 -1.4286067653e-06,}, /* 0xb5bfbe8e */
33invln2 = 1.4426950216e+00, /* 0x3fb8aa3b */
34P1 = 1.6666667163e-01, /* 0x3e2aaaab */
35P2 = -2.7777778450e-03, /* 0xbb360b61 */
36P3 = 6.6137559770e-05, /* 0x388ab355 */
37P4 = -1.6533901999e-06, /* 0xb5ddea0e */
38P5 = 4.1381369442e-08; /* 0x3331bb4c */
39
|
| 40static volatile float twom100 = 7.8886090522e-31; /* 2**-100=0x0d800000 */
41
|
41float
42__ieee754_expf(float x) /* default IEEE double exp */
43{
44 float y,hi=0.0,lo=0.0,c,t;
45 int32_t k=0,xsb;
46 u_int32_t hx;
47
48 GET_FLOAT_WORD(hx,x);
--- 47 unchanged lines hidden --- | 42float
43__ieee754_expf(float x) /* default IEEE double exp */
44{
45 float y,hi=0.0,lo=0.0,c,t;
46 int32_t k=0,xsb;
47 u_int32_t hx;
48
49 GET_FLOAT_WORD(hx,x);
--- 47 unchanged lines hidden --- |