1 //===-- floatundixf_test.c - Test __floatundixf ---------------------------===//
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 __floatundixf for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "int_lib.h"
15 #include <stdio.h>
16
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 // du_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 COMPILER_RT_ABI long double __floatundixf(du_int a);
28
test__floatundixf(du_int a,long double expected)29 int test__floatundixf(du_int a, long double expected)
30 {
31 long double x = __floatundixf(a);
32 if (x != expected)
33 printf("error in __floatundixf(%llX) = %LA, expected %LA\n",
34 a, x, expected);
35 return x != expected;
36 }
37
38 char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
39 char assumption_2[sizeof(du_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__floatundixf(0, 0.0))
47 return 1;
48
49 if (test__floatundixf(1, 1.0))
50 return 1;
51 if (test__floatundixf(2, 2.0))
52 return 1;
53 if (test__floatundixf(20, 20.0))
54 return 1;
55
56 if (test__floatundixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
57 return 1;
58 if (test__floatundixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
59 return 1;
60 if (test__floatundixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
61 return 1;
62 if (test__floatundixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
63 return 1;
64 if (test__floatundixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
65 return 1;
66 if (test__floatundixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
67 return 1;
68 if (test__floatundixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
69 return 1;
70
71 if (test__floatundixf(0x8000008000000000ULL, 0x8.000008p+60))
72 return 1;
73 if (test__floatundixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
74 return 1;
75 if (test__floatundixf(0x8000010000000000ULL, 0x8.00001p+60))
76 return 1;
77 if (test__floatundixf(0x8000000000001000ULL, 0x8.000000000001p+60))
78 return 1;
79
80 if (test__floatundixf(0x8000000000000000ULL, 0x8p+60))
81 return 1;
82 if (test__floatundixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
83 return 1;
84
85 if (test__floatundixf(0x0007FB72E8000000ULL, 0x1.FEDCBAp+50))
86 return 1;
87
88 if (test__floatundixf(0x0007FB72EA000000ULL, 0x1.FEDCBA8p+50))
89 return 1;
90 if (test__floatundixf(0x0007FB72EB000000ULL, 0x1.FEDCBACp+50))
91 return 1;
92 if (test__floatundixf(0x0007FB72EBFFFFFFULL, 0x1.FEDCBAFFFFFFCp+50))
93 return 1;
94 if (test__floatundixf(0x0007FB72EC000000ULL, 0x1.FEDCBBp+50))
95 return 1;
96 if (test__floatundixf(0x0007FB72E8000001ULL, 0x1.FEDCBA0000004p+50))
97 return 1;
98
99 if (test__floatundixf(0x0007FB72E6000000ULL, 0x1.FEDCB98p+50))
100 return 1;
101 if (test__floatundixf(0x0007FB72E7000000ULL, 0x1.FEDCB9Cp+50))
102 return 1;
103 if (test__floatundixf(0x0007FB72E7FFFFFFULL, 0x1.FEDCB9FFFFFFCp+50))
104 return 1;
105 if (test__floatundixf(0x0007FB72E4000001ULL, 0x1.FEDCB90000004p+50))
106 return 1;
107 if (test__floatundixf(0x0007FB72E4000000ULL, 0x1.FEDCB9p+50))
108 return 1;
109
110 if (test__floatundixf(0x023479FD0E092DC0ULL, 0x1.1A3CFE870496Ep+57))
111 return 1;
112 if (test__floatundixf(0x023479FD0E092DA1ULL, 0x8.D1E7F43824B684p+54L))
113 return 1;
114 if (test__floatundixf(0x023479FD0E092DB0ULL, 0x8.D1E7f43824B6Cp+54L))
115 return 1;
116 if (test__floatundixf(0x023479FD0E092DB8ULL, 0x8.D1E7F43824B6Ep+54L))
117 return 1;
118 if (test__floatundixf(0x023479FD0E092DB6ULL, 0x8.D1E7F43824B6D8p+54L))
119 return 1;
120 if (test__floatundixf(0x023479FD0E092DBFULL, 0x8.D1E7F43824B6FCp+54L))
121 return 1;
122 if (test__floatundixf(0x023479FD0E092DC1ULL, 0x8.D1E7F43824B704p+54L))
123 return 1;
124 if (test__floatundixf(0x023479FD0E092DC7ULL, 0x8.D1E7F43824B71Cp+54L))
125 return 1;
126 if (test__floatundixf(0x023479FD0E092DC8ULL, 0x8.D1E7F43824B72p+54L))
127 return 1;
128 if (test__floatundixf(0x023479FD0E092DCFULL, 0x8.D1E7F43824B73Cp+54L))
129 return 1;
130 if (test__floatundixf(0x023479FD0E092DD0ULL, 0x8.D1E7F43824B74p+54L))
131 return 1;
132 if (test__floatundixf(0x023479FD0E092DD1ULL, 0x8.D1E7F43824B744p+54L))
133 return 1;
134 if (test__floatundixf(0x023479FD0E092DD8ULL, 0x8.D1E7F43824B76p+54L))
135 return 1;
136 if (test__floatundixf(0x023479FD0E092DDFULL, 0x8.D1E7F43824B77Cp+54L))
137 return 1;
138 if (test__floatundixf(0x023479FD0E092DE0ULL, 0x1.1A3CFE870496Fp+57))
139 return 1;
140
141 #else
142 printf("skipped\n");
143 #endif
144 return 0;
145 }
146