38 lines
821 B
C
38 lines
821 B
C
/* ===-- subvsi3.c - Implement __subvsi3 -----------------------------------===
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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 __subvsi3 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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__subvsi3(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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compilerrt_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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compilerrt_abort();
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}
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return s;
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}
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