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38 lines
805 B
C
38 lines
805 B
C
/* ===-- addvsi3.c - Implement __addvsi3 -----------------------------------===
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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 __addvsi3 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: a + b */
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/* Effects: aborts if a + b overflows */
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si_int
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__addvsi3(si_int a, si_int b)
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{
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si_int s = a + b;
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if (b >= 0)
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{
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if (s < a)
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abort();
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}
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else
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{
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if (s >= a)
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abort();
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}
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return s;
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}
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