xref: /aosp_15_r20/external/arm-optimized-routines/pl/math/log1p_data.c (revision 412f47f9e737e10ed5cc46ec6a8d7fa2264f8a14) 
1*412f47f9SXin Li /*
2*412f47f9SXin Li  * Data used in double-precision log(1+x) function.
3*412f47f9SXin Li  *
4*412f47f9SXin Li  * Copyright (c) 2022-2023, 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 "math_config.h"
9*412f47f9SXin Li 
10*412f47f9SXin Li /* Polynomial coefficients generated using Remez algorithm, see
11*412f47f9SXin Li    log1p.sollya for details.  */
12*412f47f9SXin Li const struct log1p_data __log1p_data = {
13*412f47f9SXin Li   .coeffs = {-0x1.ffffffffffffbp-2, 0x1.55555555551a9p-2, -0x1.00000000008e3p-2,
14*412f47f9SXin Li 	     0x1.9999999a32797p-3, -0x1.555555552fecfp-3, 0x1.249248e071e5ap-3,
15*412f47f9SXin Li 	     -0x1.ffffff8bf8482p-4, 0x1.c71c8f07da57ap-4, -0x1.9999ca4ccb617p-4,
16*412f47f9SXin Li 	     0x1.7459ad2e1dfa3p-4, -0x1.554d2680a3ff2p-4, 0x1.3b4c54d487455p-4,
17*412f47f9SXin Li 	     -0x1.2548a9ffe80e6p-4, 0x1.0f389a24b2e07p-4, -0x1.eee4db15db335p-5,
18*412f47f9SXin Li 	     0x1.e95b494d4a5ddp-5, -0x1.15fdf07cb7c73p-4, 0x1.0310b70800fcfp-4,
19*412f47f9SXin Li 	     -0x1.cfa7385bdb37ep-6}};
20