1 /* ===-- absvsi2.c - Implement __absvsi2 -----------------------------------===
3 * The LLVM Compiler Infrastructure
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
8 * ===----------------------------------------------------------------------===
10 * This file implements __absvsi2 for the compiler_rt library.
12 * ===----------------------------------------------------------------------===
17 /* Returns: absolute value */
19 /* Effects: aborts if abs(x) < 0 */
21 COMPILER_RT_ABI si_int
24 const int N = (int)(sizeof(si_int) * CHAR_BIT);
25 if (a == (1 << (N-1)))
27 const si_int t = a >> (N - 1);