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1 /* Local definitions for use with the decNumber C Library.
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145
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2 Copyright (C) 2007-2020 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 Under Section 7 of GPL version 3, you are granted additional
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17 permissions described in the GCC Runtime Library Exception, version
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18 3.1, as published by the Free Software Foundation.
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19
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20 You should have received a copy of the GNU General Public License and
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21 a copy of the GCC Runtime Library Exception along with this program;
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22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 <http://www.gnu.org/licenses/>. */
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24
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25 #if !defined(DECIMAL128LOCAL)
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26
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27 /* The compiler needs sign manipulation functions for decimal128 which
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28 are not part of the decNumber package. */
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29
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30 /* Set sign; this assumes the sign was previously zero. */
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31 #define decimal128SetSign(d,b) \
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32 { (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] |= ((unsigned) (b) << 7); }
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33
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34 /* Clear sign. */
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35 #define decimal128ClearSign(d) \
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36 { (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] &= ~0x80; }
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37
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38 /* Flip sign. */
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39 #define decimal128FlipSign(d) \
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40 { (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] ^= 0x80; }
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41
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42 #endif
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