1/* e_rem_pio2f.c -- float version of e_rem_pio2.c
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 * Debugged and optimized by Bruce D. Evans.
4 */
5
6/*
7 * ====================================================
8 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
9 *
10 * Developed at SunPro, a Sun Microsystems, Inc. business.
11 * Permission to use, copy, modify, and distribute this
12 * software is freely granted, provided that this notice
13 * is preserved.
14 * ====================================================
15 */
16
17#include <sys/cdefs.h>
| 1/* e_rem_pio2f.c -- float version of e_rem_pio2.c
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 * Debugged and optimized by Bruce D. Evans.
4 */
5
6/*
7 * ====================================================
8 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
9 *
10 * Developed at SunPro, a Sun Microsystems, Inc. business.
11 * Permission to use, copy, modify, and distribute this
12 * software is freely granted, provided that this notice
13 * is preserved.
14 * ====================================================
15 */
16
17#include <sys/cdefs.h>
|
18__FBSDID("$FreeBSD: head/lib/msun/src/e_rem_pio2f.c 193368 2009-06-03 08:16:34Z ed $");
| 18__FBSDID("$FreeBSD: head/lib/msun/src/e_rem_pio2f.c 239192 2012-08-11 11:13:48Z dim $");
|
19
20/* __ieee754_rem_pio2f(x,y)
21 *
22 * return the remainder of x rem pi/2 in *y
23 * use double precision for everything except passing x
24 * use __kernel_rem_pio2() for large x
25 */
26
27#include <float.h>
28
29#include "math.h"
30#include "math_private.h"
31
32/*
33 * invpio2: 53 bits of 2/pi
| 19
20/* __ieee754_rem_pio2f(x,y)
21 *
22 * return the remainder of x rem pi/2 in *y
23 * use double precision for everything except passing x
24 * use __kernel_rem_pio2() for large x
25 */
26
27#include <float.h>
28
29#include "math.h"
30#include "math_private.h"
31
32/*
33 * invpio2: 53 bits of 2/pi
|
34 * pio2_1: first 33 bit of pi/2
| 34 * pio2_1: first 25 bits of pi/2
|
35 * pio2_1t: pi/2 - pio2_1
36 */
37
38static const double
39invpio2 = 6.36619772367581382433e-01, /* 0x3FE45F30, 0x6DC9C883 */
40pio2_1 = 1.57079631090164184570e+00, /* 0x3FF921FB, 0x50000000 */
41pio2_1t = 1.58932547735281966916e-08; /* 0x3E5110b4, 0x611A6263 */
42
| 35 * pio2_1t: pi/2 - pio2_1
36 */
37
38static const double
39invpio2 = 6.36619772367581382433e-01, /* 0x3FE45F30, 0x6DC9C883 */
40pio2_1 = 1.57079631090164184570e+00, /* 0x3FF921FB, 0x50000000 */
41pio2_1t = 1.58932547735281966916e-08; /* 0x3E5110b4, 0x611A6263 */
42
|
43#ifndef INLINE_REM_PIO2F
44extern
| 43#ifdef INLINE_REM_PIO2F
44static __inline
|
45#endif
| 45#endif
|
46__inline int
| 46int
|
47__ieee754_rem_pio2f(float x, double *y)
48{
49 double w,r,fn;
50 double tx[1],ty[1];
51 float z;
52 int32_t e0,n,ix,hx;
53
54 GET_FLOAT_WORD(hx,x);
--- 30 unchanged lines hidden --- | 47__ieee754_rem_pio2f(float x, double *y)
48{
49 double w,r,fn;
50 double tx[1],ty[1];
51 float z;
52 int32_t e0,n,ix,hx;
53
54 GET_FLOAT_WORD(hx,x);
--- 30 unchanged lines hidden --- |