1 /* Data definitions for sinf, cosf and sincosf.
2    Copyright (c) 2018 Arm Ltd.  All rights reserved.
3 
4    SPDX-License-Identifier: BSD-3-Clause
5 
6    Redistribution and use in source and binary forms, with or without
7    modification, are permitted provided that the following conditions
8    are met:
9    1. Redistributions of source code must retain the above copyright
10       notice, this list of conditions and the following disclaimer.
11    2. Redistributions in binary form must reproduce the above copyright
12       notice, this list of conditions and the following disclaimer in the
13       documentation and/or other materials provided with the distribution.
14    3. The name of the company may not be used to endorse or promote
15       products derived from this software without specific prior written
16       permission.
17 
18    THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
19    WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20    MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21    IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
23    TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
28 
29 #include "fdlibm.h"
30 #if !__OBSOLETE_MATH_FLOAT
31 
32 #include <stdint.h>
33 #include <math.h>
34 #include "math_config.h"
35 #include "sincosf.h"
36 
37 /* The constants and polynomials for sine and cosine.  The 2nd entry
38    computes -cos (x) rather than cos (x) to get negation for free.  */
39 const sincos_t __sincosf_table[2] =
40 {
41   {
42     { 1.0, -1.0, -1.0, 1.0 },
43 #if TOINT_INTRINSICS
44     0x1.45F306DC9C883p-1,
45 #else
46     0x1.45F306DC9C883p+23,
47 #endif
48     0x1.921FB54442D18p0,
49     0x1p0,
50     -0x1.ffffffd0c621cp-2,
51     0x1.55553e1068f19p-5,
52     -0x1.6c087e89a359dp-10,
53     0x1.99343027bf8c3p-16,
54     -0x1.555545995a603p-3,
55     0x1.1107605230bc4p-7,
56     -0x1.994eb3774cf24p-13
57   },
58   {
59     { 1.0, -1.0, -1.0, 1.0 },
60 #if TOINT_INTRINSICS
61     0x1.45F306DC9C883p-1,
62 #else
63     0x1.45F306DC9C883p+23,
64 #endif
65     0x1.921FB54442D18p0,
66     -0x1p0,
67     0x1.ffffffd0c621cp-2,
68     -0x1.55553e1068f19p-5,
69     0x1.6c087e89a359dp-10,
70     -0x1.99343027bf8c3p-16,
71     -0x1.555545995a603p-3,
72     0x1.1107605230bc4p-7,
73     -0x1.994eb3774cf24p-13
74   }
75 };
76 
77 /* Table with 4/PI to 192 bit precision.  To avoid unaligned accesses
78    only 8 new bits are added per entry, making the table 4 times larger.  */
79 const uint32_t __inv_pio4[24] =
80 {
81   0xa2,       0xa2f9,	  0xa2f983,   0xa2f9836e,
82   0xf9836e4e, 0x836e4e44, 0x6e4e4415, 0x4e441529,
83   0x441529fc, 0x1529fc27, 0x29fc2757, 0xfc2757d1,
84   0x2757d1f5, 0x57d1f534, 0xd1f534dd, 0xf534ddc0,
85   0x34ddc0db, 0xddc0db62, 0xc0db6295, 0xdb629599,
86   0x6295993c, 0x95993c43, 0x993c4390, 0x3c439041
87 };
88 
89 #endif
90