1*7c3d14c8STreehugger Robot /*===-- negvti2.c - Implement __negvti2 -----------------------------------=== 2*7c3d14c8STreehugger Robot * 3*7c3d14c8STreehugger Robot * The LLVM Compiler Infrastructure 4*7c3d14c8STreehugger Robot * 5*7c3d14c8STreehugger Robot * This file is dual licensed under the MIT and the University of Illinois Open 6*7c3d14c8STreehugger Robot * Source Licenses. See LICENSE.TXT for details. 7*7c3d14c8STreehugger Robot * 8*7c3d14c8STreehugger Robot *===----------------------------------------------------------------------=== 9*7c3d14c8STreehugger Robot * 10*7c3d14c8STreehugger Robot *This file implements __negvti2 for the compiler_rt library. 11*7c3d14c8STreehugger Robot * 12*7c3d14c8STreehugger Robot *===----------------------------------------------------------------------=== 13*7c3d14c8STreehugger Robot */ 14*7c3d14c8STreehugger Robot 15*7c3d14c8STreehugger Robot #include "int_lib.h" 16*7c3d14c8STreehugger Robot 17*7c3d14c8STreehugger Robot #ifdef CRT_HAS_128BIT 18*7c3d14c8STreehugger Robot 19*7c3d14c8STreehugger Robot /* Returns: -a */ 20*7c3d14c8STreehugger Robot 21*7c3d14c8STreehugger Robot /* Effects: aborts if -a overflows */ 22*7c3d14c8STreehugger Robot 23*7c3d14c8STreehugger Robot COMPILER_RT_ABI ti_int __negvti2(ti_int a)24*7c3d14c8STreehugger Robot__negvti2(ti_int a) 25*7c3d14c8STreehugger Robot { 26*7c3d14c8STreehugger Robot const ti_int MIN = (ti_int)1 << ((int)(sizeof(ti_int) * CHAR_BIT)-1); 27*7c3d14c8STreehugger Robot if (a == MIN) 28*7c3d14c8STreehugger Robot compilerrt_abort(); 29*7c3d14c8STreehugger Robot return -a; 30*7c3d14c8STreehugger Robot } 31*7c3d14c8STreehugger Robot 32*7c3d14c8STreehugger Robot #endif /* CRT_HAS_128BIT */ 33