1 //===-- subvti3_test.c - Test __subvti3 -----------------------------------===//
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 __subvti3 for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "int_lib.h"
15 #include <stdio.h>
16 #include <stdlib.h>
17
18 #ifdef CRT_HAS_128BIT
19
20 // Returns: a - b
21
22 // Effects: aborts if a - b overflows
23
24 COMPILER_RT_ABI ti_int __subvti3(ti_int a, ti_int b);
25
test__subvti3(ti_int a,ti_int b)26 int test__subvti3(ti_int a, ti_int b)
27 {
28 ti_int x = __subvti3(a, b);
29 ti_int expected = a - b;
30 if (x != expected)
31 {
32 twords at;
33 at.all = a;
34 twords bt;
35 bt.all = b;
36 twords xt;
37 xt.all = x;
38 twords expectedt;
39 expectedt.all = expected;
40 printf("error in test__subvsi3(0x%.16llX%.16llX, 0x%.16llX%.16llX) = "
41 "0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
42 at.s.high, at.s.low, bt.s.high, bt.s.low, xt.s.high, xt.s.low,
43 expectedt.s.high, expectedt.s.low);
44 }
45 return x != expected;
46 }
47
48 #endif
49
main()50 int main()
51 {
52 #ifdef CRT_HAS_128BIT
53 // test__subvti3(make_ti(0x8000000000000000LL, 0), 1); // should abort
54 // test__subvti3(0, make_ti(0x8000000000000000LL, 0)); // should abort
55 // test__subvti3(1, make_ti(0x8000000000000000LL, 0)); // should abort
56 // test__subvti3(make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL), -1); // should abort
57 // test__subvti3(-2, make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)); // should abort
58
59 if (test__subvti3(make_ti(0x8000000000000000LL, 0), -1))
60 return 1;
61 if (test__subvti3(make_ti(0x8000000000000000LL, 0), 0))
62 return 1;
63 if (test__subvti3(-1, make_ti(0x8000000000000000LL, 0)))
64 return 1;
65 if (test__subvti3(make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL), 1))
66 return 1;
67 if (test__subvti3(make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL), 0))
68 return 1;
69 if (test__subvti3(1, make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
70 return 1;
71 if (test__subvti3(0, make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
72 return 1;
73 if (test__subvti3(-1, make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
74 return 1;
75
76 #else
77 printf("skipped\n");
78 #endif
79 return 0;
80 }
81