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//===-- subvdi3.c - Implement __subvdi3 -----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements __subvdi3 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdlib.h>
// Returns: a - b
// Effects: aborts if a - b overflows
di_int
__subvdi3(di_int a, di_int b)
{
di_int s = a - b;
if (b >= 0)
{
if (s > a)
abort();
}
else
{
if (s <= a)
abort();
}
return s;
}
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