]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/ieee754/flt-32/e_exp2f_data.c
1 /* Shared data between expf, exp2f and powf.
2 Copyright (C) 2017-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #include "math_config.h"
21 #define N (1 << EXP2F_TABLE_BITS)
23 const struct exp2f_data __exp2f_data
= {
24 /* tab[i] = uint(2^(i/N)) - (i << 52-BITS)
25 used for computing 2^(k/N) for an int |k| < 150 N as
26 double(tab[k%N] + (k << 52-BITS)) */
28 0x3ff0000000000000, 0x3fefd9b0d3158574, 0x3fefb5586cf9890f, 0x3fef9301d0125b51,
29 0x3fef72b83c7d517b, 0x3fef54873168b9aa, 0x3fef387a6e756238, 0x3fef1e9df51fdee1,
30 0x3fef06fe0a31b715, 0x3feef1a7373aa9cb, 0x3feedea64c123422, 0x3feece086061892d,
31 0x3feebfdad5362a27, 0x3feeb42b569d4f82, 0x3feeab07dd485429, 0x3feea47eb03a5585,
32 0x3feea09e667f3bcd, 0x3fee9f75e8ec5f74, 0x3feea11473eb0187, 0x3feea589994cce13,
33 0x3feeace5422aa0db, 0x3feeb737b0cdc5e5, 0x3feec49182a3f090, 0x3feed503b23e255d,
34 0x3feee89f995ad3ad, 0x3feeff76f2fb5e47, 0x3fef199bdd85529c, 0x3fef3720dcef9069,
35 0x3fef5818dcfba487, 0x3fef7c97337b9b5f, 0x3fefa4afa2a490da, 0x3fefd0765b6e4540,
37 .shift_scaled
= 0x1.8p
+52 / N
,
38 .poly
= { 0x1.c6af84b912394p
-5, 0x1.ebfce50fac4f3p
-3, 0x1.62e42ff0c52d6p
-1 },
40 .invln2_scaled
= 0x1.71547652b82fep
+0 * N
,
42 0x1.c6af84b912394p
-5/N
/N
/N
, 0x1.ebfce50fac4f3p
-3/N
/N
, 0x1.62e42ff0c52d6p
-1/N