1*412f47f9SXin Li /* 2*412f47f9SXin Li * Double-precision polynomial coefficients for vector atan(x) and atan2(y,x). 3*412f47f9SXin Li * 4*412f47f9SXin Li * Copyright (c) 2019-2023, 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 const struct atan_poly_data __atan_poly_data = { 11*412f47f9SXin Li .poly = {/* Coefficients of polynomial P such that atan(x)~x+x*P(x^2) on 12*412f47f9SXin Li [2**-1022, 1.0]. See atan.sollya for details of how these were 13*412f47f9SXin Li generated. */ 14*412f47f9SXin Li -0x1.5555555555555p-2, 0x1.99999999996c1p-3, -0x1.2492492478f88p-3, 15*412f47f9SXin Li 0x1.c71c71bc3951cp-4, -0x1.745d160a7e368p-4, 0x1.3b139b6a88ba1p-4, 16*412f47f9SXin Li -0x1.11100ee084227p-4, 0x1.e1d0f9696f63bp-5, -0x1.aebfe7b418581p-5, 17*412f47f9SXin Li 0x1.842dbe9b0d916p-5, -0x1.5d30140ae5e99p-5, 0x1.338e31eb2fbbcp-5, 18*412f47f9SXin Li -0x1.00e6eece7de8p-5, 0x1.860897b29e5efp-6, -0x1.0051381722a59p-6, 19*412f47f9SXin Li 0x1.14e9dc19a4a4ep-7, -0x1.d0062b42fe3bfp-9, 0x1.17739e210171ap-10, 20*412f47f9SXin Li -0x1.ab24da7be7402p-13, 0x1.358851160a528p-16}}; 21