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