1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_multf3
3
4 #include <stdio.h>
5
6 #if __LDBL_MANT_DIG__ == 113
7
8 #include "int_lib.h"
9 #include "fp_test.h"
10
11 // Returns: a * b
12 COMPILER_RT_ABI long double __multf3(long double a, long double b);
13
test__multf3(long double a,long double b,uint64_t expectedHi,uint64_t expectedLo)14 int test__multf3(long double a, long double b,
15 uint64_t expectedHi, uint64_t expectedLo)
16 {
17 long double x = __multf3(a, b);
18 int ret = compareResultLD(x, expectedHi, expectedLo);
19
20 if (ret){
21 printf("error in test__multf3(%.20Lf, %.20Lf) = %.20Lf, "
22 "expected %.20Lf\n", a, b, x,
23 fromRep128(expectedHi, expectedLo));
24 }
25 return ret;
26 }
27
28 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
29
30 #endif
31
main()32 int main()
33 {
34 #if __LDBL_MANT_DIG__ == 113
35 // qNaN * any = qNaN
36 if (test__multf3(makeQNaN128(),
37 0x1.23456789abcdefp+5L,
38 UINT64_C(0x7fff800000000000),
39 UINT64_C(0x0)))
40 return 1;
41 // NaN * any = NaN
42 if (test__multf3(makeNaN128(UINT64_C(0x800030000000)),
43 0x1.23456789abcdefp+5L,
44 UINT64_C(0x7fff800000000000),
45 UINT64_C(0x0)))
46 return 1;
47 // inf * any = inf
48 if (test__multf3(makeInf128(),
49 0x1.23456789abcdefp+5L,
50 UINT64_C(0x7fff000000000000),
51 UINT64_C(0x0)))
52 return 1;
53 // any * any
54 if (test__multf3(0x1.2eab345678439abcdefea56782346p+5L,
55 0x1.edcb34a235253948765432134674fp-1L,
56 UINT64_C(0x400423e7f9e3c9fc),
57 UINT64_C(0xd906c2c2a85777c4)))
58 return 1;
59 if (test__multf3(0x1.353e45674d89abacc3a2ebf3ff4ffp-50L,
60 0x1.ed8764648369535adf4be3214567fp-9L,
61 UINT64_C(0x3fc52a163c6223fc),
62 UINT64_C(0xc94c4bf0430768b4)))
63 return 1;
64 if (test__multf3(0x1.234425696abcad34a35eeffefdcbap+456L,
65 0x451.ed98d76e5d46e5f24323dff21ffp+600L,
66 UINT64_C(0x44293a91de5e0e94),
67 UINT64_C(0xe8ed17cc2cdf64ac)))
68 return 1;
69 if (test__multf3(0x1.4356473c82a9fabf2d22ace345defp-234L,
70 0x1.eda98765476743ab21da23d45678fp-455L,
71 UINT64_C(0x3d4f37c1a3137cae),
72 UINT64_C(0xfc6807048bc2836a)))
73 return 1;
74 // underflow
75 if (test__multf3(0x1.23456734245345p-10000L,
76 0x1.edcba524498724p-6497L,
77 UINT64_C(0x0),
78 UINT64_C(0x0)))
79 return 1;
80
81 #else
82 printf("skipped\n");
83
84 #endif
85 return 0;
86 }
87