1214152Sed/*===-- negvti2.c - Implement __negvti2 -----------------------------------===
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 __negvti2 for the compiler_rt library.
11214152Sed *
12214152Sed *===----------------------------------------------------------------------===
13214152Sed */
14214152Sed
15239138Sandrew#include "int_lib.h"
16239138Sandrew
17263763Sdim#ifdef CRT_HAS_128BIT
18214152Sed
19214152Sed/* Returns: -a */
20214152Sed
21214152Sed/* Effects: aborts if -a overflows */
22214152Sed
23214152Sedti_int
24214152Sed__negvti2(ti_int a)
25214152Sed{
26214152Sed    const ti_int MIN = (ti_int)1 << ((int)(sizeof(ti_int) * CHAR_BIT)-1);
27214152Sed    if (a == MIN)
28214152Sed        compilerrt_abort();
29214152Sed    return -a;
30214152Sed}
31214152Sed
32263763Sdim#endif /* CRT_HAS_128BIT */
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