| //===-- sinf/cosf data tables ---------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "math_utils.h" |
| #include "sincosf_utils.h" |
| |
| #include <stdint.h> |
| |
| namespace __llvm_libc { |
| |
| // The constants and polynomials for sine and cosine. The 2nd entry |
| // computes -cos (x) rather than cos (x) to get negation for free. |
| const sincos_t __sincosf_table[2] = { |
| {{1.0, -1.0, -1.0, 1.0}, |
| as_double(0x41645f306dc9c883), |
| as_double(0x3ff921fb54442d18), |
| as_double(0x3ff0000000000000), |
| as_double(0xbfdffffffd0c621c), |
| as_double(0x3fa55553e1068f19), |
| as_double(0xbf56c087e89a359d), |
| as_double(0x3ef99343027bf8c3), |
| as_double(0xbfc555545995a603), |
| as_double(0x3f81107605230bc4), |
| as_double(0xbf2994eb3774cf24)}, |
| {{1.0, -1.0, -1.0, 1.0}, |
| as_double(0x41645f306dc9c883), |
| as_double(0x3ff921fb54442d18), |
| as_double(0xbff0000000000000), |
| as_double(0x3fdffffffd0c621c), |
| as_double(0xbfa55553e1068f19), |
| as_double(0x3f56c087e89a359d), |
| as_double(0xbef99343027bf8c3), |
| as_double(0xbfc555545995a603), |
| as_double(0x3f81107605230bc4), |
| as_double(0xbf2994eb3774cf24)}, |
| }; |
| |
| // Table with 4/PI to 192 bit precision. To avoid unaligned accesses |
| // only 8 new bits are added per entry, making the table 4 times larger. |
| const uint32_t __inv_pio4[24] = { |
| 0xa2, 0xa2f9, 0xa2f983, 0xa2f9836e, 0xf9836e4e, 0x836e4e44, |
| 0x6e4e4415, 0x4e441529, 0x441529fc, 0x1529fc27, 0x29fc2757, 0xfc2757d1, |
| 0x2757d1f5, 0x57d1f534, 0xd1f534dd, 0xf534ddc0, 0x34ddc0db, 0xddc0db62, |
| 0xc0db6295, 0xdb629599, 0x6295993c, 0x95993c43, 0x993c4390, 0x3c439041}; |
| |
| } // namespace __llvm_libc |