1//===-- negvti2.c - Implement __negvti2 -----------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file implements __negvti2 for the compiler_rt library. 10// 11//===----------------------------------------------------------------------===// 12 13#include "int_lib.h" 14 15#ifdef CRT_HAS_128BIT 16 17// Returns: -a 18 19// Effects: aborts if -a overflows 20 21COMPILER_RT_ABI ti_int __negvti2(ti_int a) { 22 const ti_int MIN = (ti_int)1 << ((int)(sizeof(ti_int) * CHAR_BIT) - 1); 23 if (a == MIN) 24 compilerrt_abort(); 25 return -a; 26} 27 28#endif // CRT_HAS_128BIT 29