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 21 COMPILER_RT_ABI ti_int __negvti2(ti_int a) { 22 const ti_int MIN = (tu_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