| 1 | /* Shared data between expf, exp2f and powf. |
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| 2 | Copyright (C) 2017-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include "math_config.h" |
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| 20 | |
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| 21 | #define N (1 << EXP2F_TABLE_BITS) |
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| 22 | |
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| 23 | const struct exp2f_data __exp2f_data = { |
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| 24 | /* tab[i] = uint(2^(i/N)) - (i << 52-BITS) |
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| 25 | used for computing 2^(k/N) for an int |k| < 150 N as |
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| 26 | double(tab[k%N] + (k << 52-BITS)) */ |
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| 27 | .tab = { |
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| 28 | 0x3ff0000000000000, 0x3fefd9b0d3158574, 0x3fefb5586cf9890f, 0x3fef9301d0125b51, |
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| 29 | 0x3fef72b83c7d517b, 0x3fef54873168b9aa, 0x3fef387a6e756238, 0x3fef1e9df51fdee1, |
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| 30 | 0x3fef06fe0a31b715, 0x3feef1a7373aa9cb, 0x3feedea64c123422, 0x3feece086061892d, |
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| 31 | 0x3feebfdad5362a27, 0x3feeb42b569d4f82, 0x3feeab07dd485429, 0x3feea47eb03a5585, |
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| 32 | 0x3feea09e667f3bcd, 0x3fee9f75e8ec5f74, 0x3feea11473eb0187, 0x3feea589994cce13, |
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| 33 | 0x3feeace5422aa0db, 0x3feeb737b0cdc5e5, 0x3feec49182a3f090, 0x3feed503b23e255d, |
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| 34 | 0x3feee89f995ad3ad, 0x3feeff76f2fb5e47, 0x3fef199bdd85529c, 0x3fef3720dcef9069, |
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| 35 | 0x3fef5818dcfba487, 0x3fef7c97337b9b5f, 0x3fefa4afa2a490da, 0x3fefd0765b6e4540, |
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| 36 | }, |
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| 37 | .shift_scaled = 0x1.8p+52 / N, |
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| 38 | .poly = { 0x1.c6af84b912394p-5, 0x1.ebfce50fac4f3p-3, 0x1.62e42ff0c52d6p-1 }, |
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| 39 | .shift = 0x1.8p+52, |
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| 40 | .invln2_scaled = 0x1.71547652b82fep+0 * N, |
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| 41 | .poly_scaled = { |
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| 42 | 0x1.c6af84b912394p-5/N/N/N, 0x1.ebfce50fac4f3p-3/N/N, 0x1.62e42ff0c52d6p-1/N |
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| 43 | }, |
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| 44 | }; |
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| 45 | |
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