72ac97cdfc
Add files from the libdecnumber decimal floating point library to QEMU. The libdecnumber library was originally part of GCC and contains code that is useful in emulating the PowerPC decimal floating point (DFP) instructions. This particular copy of the source comes from GCC 4.3 and is licensed at GPLv2+. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
/* Local definitions for use with the decNumber C Library.
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Copyright (C) 2007 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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In addition to the permissions in the GNU General Public License,
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the Free Software Foundation gives you unlimited permission to link
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the compiled version of this file into combinations with other
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programs, and to distribute those combinations without any
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restriction coming from the use of this file. (The General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into a combine executable.)
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#if !defined(DECIMAL128LOCAL)
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/* The compiler needs sign manipulation functions for decimal128 which
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are not part of the decNumber package. */
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/* Set sign; this assumes the sign was previously zero. */
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#define decimal128SetSign(d,b) \
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{ (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] |= ((unsigned) (b) << 7); }
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/* Clear sign. */
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#define decimal128ClearSign(d) \
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{ (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] &= ~0x80; }
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/* Flip sign. */
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#define decimal128FlipSign(d) \
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{ (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] ^= 0x80; }
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#endif
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