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1//===-- negvdi2.c - Implement __negvdi2 -----------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements __negvdi2 for the compiler_rt library.10//11//===----------------------------------------------------------------------===//12 13#include "int_lib.h"14 15// Returns: -a16 17// Effects: aborts if -a overflows18 19COMPILER_RT_ABI di_int __negvdi2(di_int a) {20 const di_int MIN =21 (di_int)((du_int)1 << ((int)(sizeof(di_int) * CHAR_BIT) - 1));22 if (a == MIN)23 compilerrt_abort();24 return -a;25}26