1 //===-- floatdidf.c - Test __floatdidf ------------------------------------===//
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 __floatdidf for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "int_lib.h"
15 #include <float.h>
16 #include <stdio.h>
17
18 // Returns: convert a to a double, rounding toward even.
19
20 // Assumption: double is a IEEE 64 bit floating point type
21 // di_int is a 64 bit integral type
22
23 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
24
25 COMPILER_RT_ABI double __floatdidf(di_int a);
26
test__floatdidf(di_int a,double expected)27 int test__floatdidf(di_int a, double expected)
28 {
29 double x = __floatdidf(a);
30 if (x != expected)
31 printf("error in __floatdidf(%llX) = %a, expected %a\n", a, x, expected);
32 return x != expected;
33 }
34
35 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
36 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
37 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
38
main()39 int main()
40 {
41 if (test__floatdidf(0, 0.0))
42 return 1;
43
44 if (test__floatdidf(1, 1.0))
45 return 1;
46 if (test__floatdidf(2, 2.0))
47 return 1;
48 if (test__floatdidf(20, 20.0))
49 return 1;
50 if (test__floatdidf(-1, -1.0))
51 return 1;
52 if (test__floatdidf(-2, -2.0))
53 return 1;
54 if (test__floatdidf(-20, -20.0))
55 return 1;
56
57 if (test__floatdidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
58 return 1;
59 if (test__floatdidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
60 return 1;
61 if (test__floatdidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
62 return 1;
63 if (test__floatdidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
64 return 1;
65
66 if (test__floatdidf(0x8000008000000000LL, -0x1.FFFFFEp+62))
67 return 1;
68 if (test__floatdidf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
69 return 1;
70 if (test__floatdidf(0x8000010000000000LL, -0x1.FFFFFCp+62))
71 return 1;
72 if (test__floatdidf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
73 return 1;
74
75 if (test__floatdidf(0x8000000000000000LL, -0x1.000000p+63))
76 return 1;
77 if (test__floatdidf(0x8000000000000001LL, -0x1.000000p+63))
78 return 1;
79
80 if (test__floatdidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
81 return 1;
82
83 if (test__floatdidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
84 return 1;
85 if (test__floatdidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
86 return 1;
87 if (test__floatdidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
88 return 1;
89 if (test__floatdidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
90 return 1;
91 if (test__floatdidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
92 return 1;
93
94 if (test__floatdidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
95 return 1;
96 if (test__floatdidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
97 return 1;
98 if (test__floatdidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
99 return 1;
100 if (test__floatdidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
101 return 1;
102 if (test__floatdidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
103 return 1;
104
105 if (test__floatdidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
106 return 1;
107 if (test__floatdidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
108 return 1;
109 if (test__floatdidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
110 return 1;
111 if (test__floatdidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
112 return 1;
113 if (test__floatdidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
114 return 1;
115 if (test__floatdidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
116 return 1;
117 if (test__floatdidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
118 return 1;
119 if (test__floatdidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
120 return 1;
121 if (test__floatdidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
122 return 1;
123 if (test__floatdidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
124 return 1;
125 if (test__floatdidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
126 return 1;
127 if (test__floatdidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
128 return 1;
129 if (test__floatdidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
130 return 1;
131 if (test__floatdidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
132 return 1;
133 if (test__floatdidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
134 return 1;
135
136 return 0;
137 }
138