41 lines
821 B
C
41 lines
821 B
C
//===-- subvti3.c - Implement __subvti3 -----------------------------------===//
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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 __subvti3 for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#if __x86_64
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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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ti_int
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__subvti3(ti_int a, ti_int b)
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{
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ti_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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#endif
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