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/* ===-- subvsi3.c - Implement __subvsi3 -----------------------------------===
*
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
* See https://llvm.org/LICENSE.txt for license information.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*
* ===----------------------------------------------------------------------===
*
* This file implements __subvsi3 for the compiler_rt library.
*
* ===----------------------------------------------------------------------===
*/
#include "int_lib.h"
/* Returns: a - b */
/* Effects: aborts if a - b overflows */
COMPILER_RT_ABI si_int
__subvsi3(si_int a, si_int b)
{
si_int s = (su_int) a - (su_int) b;
if (b >= 0)
{
if (s > a)
compilerrt_abort();
}
else
{
if (s <= a)
compilerrt_abort();
}
return s;
}
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