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absvdi2.c (222656) absvdi2.c (229135)
1/*===-- absvdi2.c - Implement __absvdi2 -----------------------------------===
2 *
3 * The LLVM Compiler Infrastructure
4 *
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
7 *
8 *===----------------------------------------------------------------------===
9 *
10 * This file implements __absvdi2 for the compiler_rt library.
11 *
12 *===----------------------------------------------------------------------===
13 */
1/*===-- absvdi2.c - Implement __absvdi2 -----------------------------------===
2 *
3 * The LLVM Compiler Infrastructure
4 *
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
7 *
8 *===----------------------------------------------------------------------===
9 *
10 * This file implements __absvdi2 for the compiler_rt library.
11 *
12 *===----------------------------------------------------------------------===
13 */
14#include "abi.h"
15
16#include "int_lib.h"
14
15#include "int_lib.h"
17#include <stdlib.h>
18
19/* Returns: absolute value */
20
21/* Effects: aborts if abs(x) < 0 */
22
23COMPILER_RT_ABI di_int
24__absvdi2(di_int a)
25{
26 const int N = (int)(sizeof(di_int) * CHAR_BIT);
27 if (a == ((di_int)1 << (N-1)))
28 compilerrt_abort();
29 const di_int t = a >> (N - 1);
30 return (a ^ t) - t;
31}
16
17/* Returns: absolute value */
18
19/* Effects: aborts if abs(x) < 0 */
20
21COMPILER_RT_ABI di_int
22__absvdi2(di_int a)
23{
24 const int N = (int)(sizeof(di_int) * CHAR_BIT);
25 if (a == ((di_int)1 << (N-1)))
26 compilerrt_abort();
27 const di_int t = a >> (N - 1);
28 return (a ^ t) - t;
29}