1//===--------------- subtf3_test.c - Test __subtf3 ------------------------===//
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 __subtf3 for the compiler_rt library.
11//
12//===----------------------------------------------------------------------===//
13
14#include <stdio.h>
15
16#if __LDBL_MANT_DIG__ == 113 && !defined(__ARM_ARCH_8A__ )
17
18#include "fp_test.h"
19
20// Returns: a - b
21COMPILER_RT_ABI long double __subtf3(long double a, long double b);
22
23int test__subtf3(long double a, long double b,
24                 uint64_t expectedHi, uint64_t expectedLo)
25{
26    long double x = __subtf3(a, b);
27    int ret = compareResultLD(x, expectedHi, expectedLo);
28
29    if (ret){
30        printf("error in test__subtf3(%.20Lf, %.20Lf) = %.20Lf, "
31               "expected %.20Lf\n", a, b, x,
32               fromRep128(expectedHi, expectedLo));
33    }
34    return ret;
35}
36
37char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
38
39#endif
40
41int main()
42{
43#if __LDBL_MANT_DIG__ == 113 && !defined(__ARM_ARCH_8A__ )
44    // qNaN - any = qNaN
45    if (test__subtf3(makeQNaN128(),
46                     0x1.23456789abcdefp+5L,
47                     UINT64_C(0x7fff800000000000),
48                     UINT64_C(0x0)))
49        return 1;
50    // NaN - any = NaN
51    if (test__subtf3(makeNaN128(UINT64_C(0x800030000000)),
52                     0x1.23456789abcdefp+5L,
53                     UINT64_C(0x7fff800000000000),
54                     UINT64_C(0x0)))
55        return 1;
56    // inf - any = inf
57    if (test__subtf3(makeInf128(),
58                     0x1.23456789abcdefp+5L,
59                     UINT64_C(0x7fff000000000000),
60                     UINT64_C(0x0)))
61        return 1;
62    // any - any
63    if (test__subtf3(0x1.234567829a3bcdef5678ade36734p+5L,
64                     0x1.ee9d7c52354a6936ab8d7654321fp-1L,
65                     UINT64_C(0x40041b8af1915166),
66                     UINT64_C(0xa44a7bca780a166c)))
67        return 1;
68
69#else
70    printf("skipped\n");
71
72#endif
73    return 0;
74}
75