1 /* 2 * Coeffs and table entries for single-precision exp. Copied from 3 * math/exp2f_data.c, with EXP2F_TABLE_BITS == 32. 4 * 5 * Copyright (c) 2017-2023, Arm Limited. 6 * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception 7 */ 8 9 #include "math_config.h" 10 11 #define N (1 << EXPF_TABLE_BITS) 12 13 const struct expf_data __expf_data = { 14 /* tab[i] = uint(2^(i/N)) - (i << 52-BITS) 15 used for computing 2^(k/N) for an int |k| < 150 N as 16 double(tab[k%N] + (k << 52-BITS)) */ 17 .tab = { 18 0x3ff0000000000000, 0x3fefd9b0d3158574, 0x3fefb5586cf9890f, 0x3fef9301d0125b51, 19 0x3fef72b83c7d517b, 0x3fef54873168b9aa, 0x3fef387a6e756238, 0x3fef1e9df51fdee1, 20 0x3fef06fe0a31b715, 0x3feef1a7373aa9cb, 0x3feedea64c123422, 0x3feece086061892d, 21 0x3feebfdad5362a27, 0x3feeb42b569d4f82, 0x3feeab07dd485429, 0x3feea47eb03a5585, 22 0x3feea09e667f3bcd, 0x3fee9f75e8ec5f74, 0x3feea11473eb0187, 0x3feea589994cce13, 23 0x3feeace5422aa0db, 0x3feeb737b0cdc5e5, 0x3feec49182a3f090, 0x3feed503b23e255d, 24 0x3feee89f995ad3ad, 0x3feeff76f2fb5e47, 0x3fef199bdd85529c, 0x3fef3720dcef9069, 25 0x3fef5818dcfba487, 0x3fef7c97337b9b5f, 0x3fefa4afa2a490da, 0x3fefd0765b6e4540, 26 }, 27 .invln2_scaled = 0x1.71547652b82fep+0 * N, 28 .poly_scaled = { 29 0x1.c6af84b912394p-5/N/N/N, 0x1.ebfce50fac4f3p-3/N/N, 0x1.62e42ff0c52d6p-1/N, 30 }, 31 }; 32