53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/* Extracted from gcc-3.4.1/gcc/config/mips/_tilibi.c */
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/* A few TImode functions needed for TFmode emulated arithmetic.
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Copyright 2002, 2003 Free Software Foundation, Inc.
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Contributed by Alexandre Oliva <aoliva@redhat.com>
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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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "libgcc.h"
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#if defined(__sparc__) || defined(__ppc__)
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#define LIBGCC2_WORDS_BIG_ENDIAN
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#endif
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typedef union
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{
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struct TIstruct {
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#if defined(LIBGCC2_WORDS_BIG_ENDIAN)
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DItype high, low;
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#else
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DItype low, high;
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#endif
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} s;
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TItype ll;
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} TIunion;
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TItype
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__negti2 (TItype u)
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{
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TIunion w;
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TIunion uu;
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uu.ll = u;
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w.s.low = -uu.s.low;
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w.s.high = -uu.s.high - ((UDItype) w.s.low > 0);
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return w.ll;
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}
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