1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_floatdixf
3 //===-- floatdixf_test.c - Test __floatdixf -------------------------------===//
4 //
5 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
6 // See https://llvm.org/LICENSE.txt for license information.
7 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //
9 //===----------------------------------------------------------------------===//
10 //
11 // This file tests __floatdixf for the compiler_rt library.
12 //
13 //===----------------------------------------------------------------------===//
14
15 #include "int_lib.h"
16 #include <stdio.h>
17
18 #if HAS_80_BIT_LONG_DOUBLE
19 // Returns: convert a to a long double, rounding toward even.
20
21 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
22 // di_int is a 64 bit integral type
23
24 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
25 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
26
27 long COMPILER_RT_ABI double __floatdixf(di_int a);
28
test__floatdixf(di_int a,long double expected)29 int test__floatdixf(di_int a, long double expected)
30 {
31 long double x = __floatdixf(a);
32 if (x != expected)
33 printf("error in __floatdixf(%llX) = %LA, expected %LA\n",
34 a, x, expected);
35 return x != expected;
36 }
37
38 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
39 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
40 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
41 #endif
42
main()43 int main()
44 {
45 #if HAS_80_BIT_LONG_DOUBLE
46 if (test__floatdixf(0, 0.0))
47 return 1;
48
49 if (test__floatdixf(1, 1.0))
50 return 1;
51 if (test__floatdixf(2, 2.0))
52 return 1;
53 if (test__floatdixf(20, 20.0))
54 return 1;
55 if (test__floatdixf(-1, -1.0))
56 return 1;
57 if (test__floatdixf(-2, -2.0))
58 return 1;
59 if (test__floatdixf(-20, -20.0))
60 return 1;
61
62 if (test__floatdixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
63 return 1;
64 if (test__floatdixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
65 return 1;
66 if (test__floatdixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
67 return 1;
68 if (test__floatdixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
69 return 1;
70
71 if (test__floatdixf(0x8000008000000000LL, -0x1.FFFFFEp+62))
72 return 1;
73 if (test__floatdixf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
74 return 1;
75 if (test__floatdixf(0x8000010000000000LL, -0x1.FFFFFCp+62))
76 return 1;
77 if (test__floatdixf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
78 return 1;
79
80 if (test__floatdixf(0x8000000000000000LL, -0x1.000000p+63))
81 return 1;
82 if (test__floatdixf(0x8000000000000001LL, -0x1.FFFFFFFFFFFFFFFCp+62L))
83 return 1;
84
85 if (test__floatdixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
86 return 1;
87
88 if (test__floatdixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
89 return 1;
90 if (test__floatdixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
91 return 1;
92 if (test__floatdixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
93 return 1;
94 if (test__floatdixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
95 return 1;
96 if (test__floatdixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
97 return 1;
98
99 if (test__floatdixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
100 return 1;
101 if (test__floatdixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
102 return 1;
103 if (test__floatdixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
104 return 1;
105 if (test__floatdixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
106 return 1;
107 if (test__floatdixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
108 return 1;
109
110 if (test__floatdixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
111 return 1;
112 if (test__floatdixf(0x023479FD0E092DA1LL, 0x8.D1E7F43824B684p+54L))
113 return 1;
114 if (test__floatdixf(0x023479FD0E092DB0LL, 0x8.D1E7f43824B6Cp+54L))
115 return 1;
116 if (test__floatdixf(0x023479FD0E092DB8LL, 0x8.D1E7F43824B6Ep+54L))
117 return 1;
118 if (test__floatdixf(0x023479FD0E092DB6LL, 0x8.D1E7F43824B6D8p+54L))
119 return 1;
120 if (test__floatdixf(0x023479FD0E092DBFLL, 0x8.D1E7F43824B6FCp+54L))
121 return 1;
122 if (test__floatdixf(0x023479FD0E092DC1LL, 0x8.D1E7F43824B704p+54L))
123 return 1;
124 if (test__floatdixf(0x023479FD0E092DC7LL, 0x8.D1E7F43824B71Cp+54L))
125 return 1;
126 if (test__floatdixf(0x023479FD0E092DC8LL, 0x8.D1E7F43824B72p+54L))
127 return 1;
128 if (test__floatdixf(0x023479FD0E092DCFLL, 0x8.D1E7F43824B73Cp+54L))
129 return 1;
130 if (test__floatdixf(0x023479FD0E092DD0LL, 0x8.D1E7F43824B74p+54L))
131 return 1;
132 if (test__floatdixf(0x023479FD0E092DD1LL, 0x8.D1E7F43824B744p+54L))
133 return 1;
134 if (test__floatdixf(0x023479FD0E092DD8LL, 0x8.D1E7F43824B76p+54L))
135 return 1;
136 if (test__floatdixf(0x023479FD0E092DDFLL, 0x8.D1E7F43824B77Cp+54L))
137 return 1;
138 if (test__floatdixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
139 return 1;
140
141 #else
142 printf("skipped\n");
143 #endif
144 return 0;
145 }
146