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
805 B
C
31 lines
805 B
C
/*===-- absvdi2.c - Implement __absvdi2 -----------------------------------===
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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 __absvdi2 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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di_int
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__absvdi2(di_int a)
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{
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const int N = (int)(sizeof(di_int) * CHAR_BIT);
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if (a == ((di_int)1 << (N-1)))
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compilerrt_abort();
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const di_int t = a >> (N - 1);
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return (a ^ t) - t;
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}
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