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