1*0a6a1f1dSLionel Sambuc /* ===-- absvti2.c - Implement __absvdi2 -----------------------------------=== 2*0a6a1f1dSLionel Sambuc * 3*0a6a1f1dSLionel Sambuc * The LLVM Compiler Infrastructure 4*0a6a1f1dSLionel Sambuc * 5*0a6a1f1dSLionel Sambuc * This file is dual licensed under the MIT and the University of Illinois Open 6*0a6a1f1dSLionel Sambuc * Source Licenses. See LICENSE.TXT for details. 7*0a6a1f1dSLionel Sambuc * 8*0a6a1f1dSLionel Sambuc * ===----------------------------------------------------------------------=== 9*0a6a1f1dSLionel Sambuc * 10*0a6a1f1dSLionel Sambuc * This file implements __absvti2 for the compiler_rt library. 11*0a6a1f1dSLionel Sambuc * 12*0a6a1f1dSLionel Sambuc * ===----------------------------------------------------------------------=== 13*0a6a1f1dSLionel Sambuc */ 14*0a6a1f1dSLionel Sambuc 15*0a6a1f1dSLionel Sambuc #include "int_lib.h" 16*0a6a1f1dSLionel Sambuc 17*0a6a1f1dSLionel Sambuc #ifdef CRT_HAS_128BIT 18*0a6a1f1dSLionel Sambuc 19*0a6a1f1dSLionel Sambuc /* Returns: absolute value */ 20*0a6a1f1dSLionel Sambuc 21*0a6a1f1dSLionel Sambuc /* Effects: aborts if abs(x) < 0 */ 22*0a6a1f1dSLionel Sambuc 23*0a6a1f1dSLionel Sambuc COMPILER_RT_ABI ti_int __absvti2(ti_int a)24*0a6a1f1dSLionel Sambuc__absvti2(ti_int a) 25*0a6a1f1dSLionel Sambuc { 26*0a6a1f1dSLionel Sambuc const int N = (int)(sizeof(ti_int) * CHAR_BIT); 27*0a6a1f1dSLionel Sambuc if (a == ((ti_int)1 << (N-1))) 28*0a6a1f1dSLionel Sambuc compilerrt_abort(); 29*0a6a1f1dSLionel Sambuc const ti_int s = a >> (N - 1); 30*0a6a1f1dSLionel Sambuc return (a ^ s) - s; 31*0a6a1f1dSLionel Sambuc } 32*0a6a1f1dSLionel Sambuc 33*0a6a1f1dSLionel Sambuc #endif /* CRT_HAS_128BIT */ 34*0a6a1f1dSLionel Sambuc 35