1 //===--------------- multf3_test.c - Test __multf3 ------------------------===//
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 __multf3 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 __multf3(long double a, long double b);
22
test__multf3(long double a,long double b,uint64_t expectedHi,uint64_t expectedLo)23 int test__multf3(long double a, long double b,
24 uint64_t expectedHi, uint64_t expectedLo)
25 {
26 long double x = __multf3(a, b);
27 int ret = compareResultLD(x, expectedHi, expectedLo);
28
29 if (ret){
30 printf("error in test__multf3(%.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__multf3(makeQNaN128(),
46 0x1.23456789abcdefp+5L,
47 UINT64_C(0x7fff800000000000),
48 UINT64_C(0x0)))
49 return 1;
50 // NaN * any = NaN
51 if (test__multf3(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__multf3(makeInf128(),
58 0x1.23456789abcdefp+5L,
59 UINT64_C(0x7fff000000000000),
60 UINT64_C(0x0)))
61 return 1;
62 // any * any
63 if (test__multf3(0x1.2eab345678439abcdefea56782346p+5L,
64 0x1.edcb34a235253948765432134674fp-1L,
65 UINT64_C(0x400423e7f9e3c9fc),
66 UINT64_C(0xd906c2c2a85777c4)))
67 return 1;
68 if (test__multf3(0x1.353e45674d89abacc3a2ebf3ff4ffp-50L,
69 0x1.ed8764648369535adf4be3214567fp-9L,
70 UINT64_C(0x3fc52a163c6223fc),
71 UINT64_C(0xc94c4bf0430768b4)))
72 return 1;
73 if (test__multf3(0x1.234425696abcad34a35eeffefdcbap+456L,
74 0x451.ed98d76e5d46e5f24323dff21ffp+600L,
75 UINT64_C(0x44293a91de5e0e94),
76 UINT64_C(0xe8ed17cc2cdf64ac)))
77 return 1;
78 if (test__multf3(0x1.4356473c82a9fabf2d22ace345defp-234L,
79 0x1.eda98765476743ab21da23d45678fp-455L,
80 UINT64_C(0x3d4f37c1a3137cae),
81 UINT64_C(0xfc6807048bc2836a)))
82 return 1;
83 // underflow
84 if (test__multf3(0x1.23456734245345p-10000L,
85 0x1.edcba524498724p-6383L,
86 UINT64_C(0x0),
87 UINT64_C(0x0)))
88 return 1;
89
90 #else
91 printf("skipped\n");
92
93 #endif
94 return 0;
95 }
96