1 /*===-- negvti2.c - Implement __negvti2 -----------------------------------=== 2 * 3 * The LLVM Compiler Infrastructure 4 * 5 * This file is distributed under the University of Illinois Open Source 6 * License. See LICENSE.TXT for details. 7 * 8 *===----------------------------------------------------------------------=== 9 * 10 *This file implements __negvti2 for the compiler_rt library. 11 * 12 *===----------------------------------------------------------------------=== 13 */ 14 15 #if __x86_64 16 17 #include "int_lib.h" 18 #include <stdlib.h> 19 20 /* Returns: -a */ 21 22 /* Effects: aborts if -a overflows */ 23 24 ti_int 25 __negvti2(ti_int a) 26 { 27 const ti_int MIN = (ti_int)1 << ((int)(sizeof(ti_int) * CHAR_BIT)-1); 28 if (a == MIN) 29 abort(); 30 return -a; 31 } 32 33 #endif 34
