f287008791
- Fiddling with abort directly is annoying given the way we use system includes, although it would be nice to fix this so we could make sure calling abort directly is verboten. llvm-svn: 100014
31 lines
801 B
C
31 lines
801 B
C
/* ===-- absvsi2.c - Implement __absvsi2 -----------------------------------===
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*
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* The LLVM Compiler Infrastructure
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*
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* This file is distributed under the University of Illinois Open Source
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* License. See LICENSE.TXT for details.
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*
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* ===----------------------------------------------------------------------===
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*
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* This file implements __absvsi2 for the compiler_rt library.
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*
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* ===----------------------------------------------------------------------===
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*/
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#include "int_lib.h"
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#include <stdlib.h>
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/* Returns: absolute value */
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/* Effects: aborts if abs(x) < 0 */
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si_int
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__absvsi2(si_int a)
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{
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const int N = (int)(sizeof(si_int) * CHAR_BIT);
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if (a == (1 << (N-1)))
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compilerrt_abort();
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const si_int t = a >> (N - 1);
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return (a ^ t) - t;
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}
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