2009-08-05 12:02:56 +08:00
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/* ===-- negvdi2.c - Implement __negvdi2 -----------------------------------===
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*
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* The LLVM Compiler Infrastructure
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*
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2010-11-17 06:13:33 +08:00
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* This file is dual licensed under the MIT and the University of Illinois Open
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* Source Licenses. See LICENSE.TXT for details.
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2009-08-05 12:02:56 +08:00
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*
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* ===----------------------------------------------------------------------===
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*
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* This file implements __negvdi2 for the compiler_rt library.
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*
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* ===----------------------------------------------------------------------===
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*/
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2011-04-20 01:52:09 +08:00
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#include "abi.h"
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2009-06-27 00:47:03 +08:00
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#include "int_lib.h"
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#include <stdlib.h>
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2009-08-05 12:02:56 +08:00
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/* Returns: -a */
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2009-06-27 00:47:03 +08:00
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2009-08-05 12:02:56 +08:00
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/* Effects: aborts if -a overflows */
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2009-06-27 00:47:03 +08:00
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2011-04-20 01:52:09 +08:00
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COMPILER_RT_ABI di_int
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2009-06-27 00:47:03 +08:00
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__negvdi2(di_int a)
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{
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const di_int MIN = (di_int)1 << ((int)(sizeof(di_int) * CHAR_BIT)-1);
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if (a == MIN)
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2010-04-01 01:00:45 +08:00
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compilerrt_abort();
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2009-06-27 00:47:03 +08:00
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return -a;
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}
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