1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_subvdi3
3
4 #include "int_lib.h"
5 #include <stdio.h>
6 #include <stdlib.h>
7
8 // Returns: a - b
9
10 // Effects: aborts if a - b overflows
11
12 COMPILER_RT_ABI di_int __subvdi3(di_int a, di_int b);
13
test__subvdi3(di_int a,di_int b)14 int test__subvdi3(di_int a, di_int b)
15 {
16 di_int x = __subvdi3(a, b);
17 di_int expected = a - b;
18 if (x != expected)
19 printf("error in test__subvsi3(0x%llX, 0x%llX) = %lld, expected %lld\n",
20 a, b, x, expected);
21 return x != expected;
22 }
23
main()24 int main()
25 {
26 // test__subvdi3(0x8000000000000000LL, 1); // should abort
27 // test__subvdi3(0, 0x8000000000000000LL); // should abort
28 // test__subvdi3(1, 0x8000000000000000LL); // should abort
29 // test__subvdi3(0x7FFFFFFFFFFFFFFFLL, -1); // should abort
30 // test__subvdi3(-2, 0x7FFFFFFFFFFFFFFFLL); // should abort
31
32 if (test__subvdi3(0x8000000000000000LL, -1))
33 return 1;
34 if (test__subvdi3(0x8000000000000000LL, 0))
35 return 1;
36 if (test__subvdi3(-1, 0x8000000000000000LL))
37 return 1;
38 if (test__subvdi3(0x7FFFFFFFFFFFFFFLL, 1))
39 return 1;
40 if (test__subvdi3(0x7FFFFFFFFFFFFFFFLL, 0))
41 return 1;
42 if (test__subvdi3(1, 0x7FFFFFFFFFFFFFFLL))
43 return 1;
44 if (test__subvdi3(0, 0x7FFFFFFFFFFFFFFFLL))
45 return 1;
46 if (test__subvdi3(-1, 0x7FFFFFFFFFFFFFFFLL))
47 return 1;
48
49 return 0;
50 }
51