1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_addtf3
3
4 #include <fenv.h>
5 #include <stdio.h>
6
7 // The testcase currently assumes IEEE TF format, once that has been
8 // fixed the defined(CRT_HAS_IEEE_TF) guard can be removed to enable it for
9 // IBM 128 floats as well.
10 #if defined(CRT_HAS_IEEE_TF)
11
12 # include "fp_test.h"
13 # include "int_lib.h"
14
15 // Returns: a + b
16 COMPILER_RT_ABI tf_float __addtf3(tf_float a, tf_float b);
17
test__addtf3(tf_float a,tf_float b,uint64_t expectedHi,uint64_t expectedLo)18 int test__addtf3(tf_float a, tf_float b, uint64_t expectedHi,
19 uint64_t expectedLo) {
20 tf_float x = __addtf3(a, b);
21 int ret = compareResultF128(x, expectedHi, expectedLo);
22
23 if (ret) {
24 printf("error in test__addtf3(%.20Lf, %.20Lf) = %.20Lf, "
25 "expected %.20Lf\n",
26 a, b, x, fromRep128(expectedHi, expectedLo));
27 }
28
29 return ret;
30 }
31
32 char assumption_1[sizeof(tf_float) * CHAR_BIT == 128] = {0};
33
34 #endif
35
main()36 int main() {
37 #if defined(CRT_HAS_IEEE_TF)
38 // qNaN + any = qNaN
39 if (test__addtf3(makeQNaN128(), 0x1.23456789abcdefp+5L,
40 UINT64_C(0x7fff800000000000), UINT64_C(0x0)))
41 return 1;
42 // NaN + any = NaN
43 if (test__addtf3(makeNaN128(UINT64_C(0x800030000000)),
44 TF_C(0x1.23456789abcdefp+5), UINT64_C(0x7fff800000000000),
45 UINT64_C(0x0)))
46 return 1;
47 // inf + inf = inf
48 if (test__addtf3(makeInf128(), makeInf128(), UINT64_C(0x7fff000000000000),
49 UINT64_C(0x0)))
50 return 1;
51 // inf + any = inf
52 if (test__addtf3(makeInf128(), TF_C(0x1.2335653452436234723489432abcdefp+5),
53 UINT64_C(0x7fff000000000000), UINT64_C(0x0)))
54 return 1;
55 // any + any
56 if (test__addtf3(TF_C(0x1.23456734245345543849abcdefp+5),
57 TF_C(0x1.edcba52449872455634654321fp-1),
58 UINT64_C(0x40042afc95c8b579), UINT64_C(0x61e58dd6c51eb77c)))
59 return 1;
60
61 # if (defined(__arm__) || defined(__aarch64__)) && defined(__ARM_FP) || \
62 defined(i386) || defined(__x86_64__) || \
63 (defined(__loongarch__) && __loongarch_frlen != 0)
64 // Rounding mode tests on supported architectures
65 const tf_float m = 1234.0L, n = 0.01L;
66
67 fesetround(FE_UPWARD);
68 if (test__addtf3(m, n, UINT64_C(0x40093480a3d70a3d),
69 UINT64_C(0x70a3d70a3d70a3d8)))
70 return 1;
71
72 fesetround(FE_DOWNWARD);
73 if (test__addtf3(m, n, UINT64_C(0x40093480a3d70a3d),
74 UINT64_C(0x70a3d70a3d70a3d7)))
75 return 1;
76
77 fesetround(FE_TOWARDZERO);
78 if (test__addtf3(m, n, UINT64_C(0x40093480a3d70a3d),
79 UINT64_C(0x70a3d70a3d70a3d7)))
80 return 1;
81
82 fesetround(FE_TONEAREST);
83 if (test__addtf3(m, n, UINT64_C(0x40093480a3d70a3d),
84 UINT64_C(0x70a3d70a3d70a3d7)))
85 return 1;
86 # endif
87
88 #else
89 printf("skipped\n");
90
91 #endif
92 return 0;
93 }
94