xref: /aosp_15_r20/external/arm-optimized-routines/math/sincosf_data.c (revision 412f47f9e737e10ed5cc46ec6a8d7fa2264f8a14) 
1*412f47f9SXin Li /*
2*412f47f9SXin Li  * Data definition for sinf, cosf and sincosf.
3*412f47f9SXin Li  *
4*412f47f9SXin Li  * Copyright (c) 2018-2019, Arm Limited.
5*412f47f9SXin Li  * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
6*412f47f9SXin Li  */
7*412f47f9SXin Li 
8*412f47f9SXin Li #include <stdint.h>
9*412f47f9SXin Li #include <math.h>
10*412f47f9SXin Li #include "math_config.h"
11*412f47f9SXin Li #include "sincosf.h"
12*412f47f9SXin Li 
13*412f47f9SXin Li /* The constants and polynomials for sine and cosine.  The 2nd entry
14*412f47f9SXin Li    computes -cos (x) rather than cos (x) to get negation for free.  */
15*412f47f9SXin Li const sincos_t __sincosf_table[2] =
16*412f47f9SXin Li {
17*412f47f9SXin Li   {
18*412f47f9SXin Li     { 1.0, -1.0, -1.0, 1.0 },
19*412f47f9SXin Li #if TOINT_INTRINSICS
20*412f47f9SXin Li     0x1.45F306DC9C883p-1,
21*412f47f9SXin Li #else
22*412f47f9SXin Li     0x1.45F306DC9C883p+23,
23*412f47f9SXin Li #endif
24*412f47f9SXin Li     0x1.921FB54442D18p0,
25*412f47f9SXin Li     0x1p0,
26*412f47f9SXin Li     -0x1.ffffffd0c621cp-2,
27*412f47f9SXin Li     0x1.55553e1068f19p-5,
28*412f47f9SXin Li     -0x1.6c087e89a359dp-10,
29*412f47f9SXin Li     0x1.99343027bf8c3p-16,
30*412f47f9SXin Li     -0x1.555545995a603p-3,
31*412f47f9SXin Li     0x1.1107605230bc4p-7,
32*412f47f9SXin Li     -0x1.994eb3774cf24p-13
33*412f47f9SXin Li   },
34*412f47f9SXin Li   {
35*412f47f9SXin Li     { 1.0, -1.0, -1.0, 1.0 },
36*412f47f9SXin Li #if TOINT_INTRINSICS
37*412f47f9SXin Li     0x1.45F306DC9C883p-1,
38*412f47f9SXin Li #else
39*412f47f9SXin Li     0x1.45F306DC9C883p+23,
40*412f47f9SXin Li #endif
41*412f47f9SXin Li     0x1.921FB54442D18p0,
42*412f47f9SXin Li     -0x1p0,
43*412f47f9SXin Li     0x1.ffffffd0c621cp-2,
44*412f47f9SXin Li     -0x1.55553e1068f19p-5,
45*412f47f9SXin Li     0x1.6c087e89a359dp-10,
46*412f47f9SXin Li     -0x1.99343027bf8c3p-16,
47*412f47f9SXin Li     -0x1.555545995a603p-3,
48*412f47f9SXin Li     0x1.1107605230bc4p-7,
49*412f47f9SXin Li     -0x1.994eb3774cf24p-13
50*412f47f9SXin Li   }
51*412f47f9SXin Li };
52*412f47f9SXin Li 
53*412f47f9SXin Li /* Table with 4/PI to 192 bit precision.  To avoid unaligned accesses
54*412f47f9SXin Li    only 8 new bits are added per entry, making the table 4 times larger.  */
55*412f47f9SXin Li const uint32_t __inv_pio4[24] =
56*412f47f9SXin Li {
57*412f47f9SXin Li   0xa2,       0xa2f9,	  0xa2f983,   0xa2f9836e,
58*412f47f9SXin Li   0xf9836e4e, 0x836e4e44, 0x6e4e4415, 0x4e441529,
59*412f47f9SXin Li   0x441529fc, 0x1529fc27, 0x29fc2757, 0xfc2757d1,
60*412f47f9SXin Li   0x2757d1f5, 0x57d1f534, 0xd1f534dd, 0xf534ddc0,
61*412f47f9SXin Li   0x34ddc0db, 0xddc0db62, 0xc0db6295, 0xdb629599,
62*412f47f9SXin Li   0x6295993c, 0x95993c43, 0x993c4390, 0x3c439041
63*412f47f9SXin Li };
64