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
17
18 #include "fp_test.h"
19
20 // Returns: a - b
21 long double __subtf3(long double a, long double b);
22
test__subtf3(long double a,long double b,uint64_t expectedHi,uint64_t expectedLo)23 int 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
37 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
38
39 #endif
40
main()41 int main()
42 {
43 #if __LDBL_MANT_DIG__ == 113
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