1214152Sed/*===-- absvdi2.c - Implement __absvdi2 -----------------------------------===
2214152Sed *
3214152Sed *                     The LLVM Compiler Infrastructure
4214152Sed *
5222656Sed * This file is dual licensed under the MIT and the University of Illinois Open
6222656Sed * Source Licenses. See LICENSE.TXT for details.
7214152Sed *
8214152Sed *===----------------------------------------------------------------------===
9214152Sed *
10214152Sed * This file implements __absvdi2 for the compiler_rt library.
11214152Sed *
12214152Sed *===----------------------------------------------------------------------===
13214152Sed */
14214152Sed
15214152Sed#include "int_lib.h"
16214152Sed
17214152Sed/* Returns: absolute value */
18214152Sed
19214152Sed/* Effects: aborts if abs(x) < 0 */
20214152Sed
21222656SedCOMPILER_RT_ABI di_int
22214152Sed__absvdi2(di_int a)
23214152Sed{
24214152Sed    const int N = (int)(sizeof(di_int) * CHAR_BIT);
25214152Sed    if (a == ((di_int)1 << (N-1)))
26214152Sed        compilerrt_abort();
27214152Sed    const di_int t = a >> (N - 1);
28214152Sed    return (a ^ t) - t;
29214152Sed}
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