absvdi2_test.c revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1//===-- absvdi2_test.c - Test __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 tests __absvdi2 for the compiler_rt library.
11//
12//===----------------------------------------------------------------------===//
13
14#include "int_lib.h"
15#include <stdio.h>
16#include <stdlib.h>
17
18// Returns: absolute value
19
20// Effects: aborts if abs(x) < 0
21
22di_int __absvdi2(di_int a);
23
24int test__absvdi2(di_int a)
25{
26    di_int x = __absvdi2(a);
27    di_int expected = a;
28    if (expected < 0)
29        expected = -expected;
30    if (x != expected || expected < 0)
31        printf("error in __absvdi2(0x%llX) = %lld, expected positive %lld\n",
32               a, x, expected);
33    return x != expected;
34}
35
36int main()
37{
38//     if (test__absvdi2(0x8000000000000000LL))  // should abort
39//         return 1;
40    if (test__absvdi2(0x0000000000000000LL))
41        return 1;
42    if (test__absvdi2(0x0000000000000001LL))
43        return 1;
44    if (test__absvdi2(0x0000000000000002LL))
45        return 1;
46    if (test__absvdi2(0x7FFFFFFFFFFFFFFELL))
47        return 1;
48    if (test__absvdi2(0x7FFFFFFFFFFFFFFFLL))
49        return 1;
50    if (test__absvdi2(0x8000000000000001LL))
51        return 1;
52    if (test__absvdi2(0x8000000000000002LL))
53        return 1;
54    if (test__absvdi2(0xFFFFFFFFFFFFFFFELL))
55        return 1;
56    if (test__absvdi2(0xFFFFFFFFFFFFFFFFLL))
57        return 1;
58
59    int i;
60    for (i = 0; i < 10000; ++i)
61        if (test__absvdi2(((di_int)rand() << 32) | rand()))
62            return 1;
63
64    return 0;
65}
66