1 //===-- floattisf_test.c - Test __floattisf -------------------------------===//
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 __floattisf for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "int_lib.h"
15 #include <float.h>
16 #include <stdio.h>
17
18 #ifdef CRT_HAS_128BIT
19
20 // Returns: convert a to a float, rounding toward even.
21
22 // Assumption: float is a IEEE 32 bit floating point type
23 // ti_int is a 64 bit integral type
24
25 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
26
27 float __floattisf(ti_int a);
28
test__floattisf(ti_int a,float expected)29 int test__floattisf(ti_int a, float expected)
30 {
31 float x = __floattisf(a);
32 if (x != expected)
33 {
34 twords at;
35 at.all = a;
36 printf("error in __floattisf(0x%.16llX%.16llX) = %a, expected %a\n",
37 at.s.high, at.s.low, x, expected);
38 }
39 return x != expected;
40 }
41
42 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
43 char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
44 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
45
46 #endif
47
main()48 int main()
49 {
50 #ifdef CRT_HAS_128BIT
51 if (test__floattisf(0, 0.0F))
52 return 1;
53
54 if (test__floattisf(1, 1.0F))
55 return 1;
56 if (test__floattisf(2, 2.0F))
57 return 1;
58 if (test__floattisf(-1, -1.0F))
59 return 1;
60 if (test__floattisf(-2, -2.0F))
61 return 1;
62
63 if (test__floattisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
64 return 1;
65 if (test__floattisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
66 return 1;
67
68 if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000008000000000LL),
69 -0x1.FFFFFEp+62F))
70 return 1;
71 if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000010000000000LL),
72 -0x1.FFFFFCp+62F))
73 return 1;
74
75 if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000000LL),
76 -0x1.000000p+63F))
77 return 1;
78 if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000001LL),
79 -0x1.000000p+63F))
80 return 1;
81
82 if (test__floattisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
83 return 1;
84
85 if (test__floattisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
86 return 1;
87 if (test__floattisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
88 return 1;
89 if (test__floattisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
90 return 1;
91 if (test__floattisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
92 return 1;
93 if (test__floattisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
94 return 1;
95
96 if (test__floattisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
97 return 1;
98 if (test__floattisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
99 return 1;
100 if (test__floattisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
101 return 1;
102 if (test__floattisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
103 return 1;
104 if (test__floattisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
105 return 1;
106
107 if (test__floattisf(make_ti(0x0007FB72E8000000LL, 0), 0x1.FEDCBAp+114F))
108 return 1;
109
110 if (test__floattisf(make_ti(0x0007FB72EA000000LL, 0), 0x1.FEDCBAp+114F))
111 return 1;
112 if (test__floattisf(make_ti(0x0007FB72EB000000LL, 0), 0x1.FEDCBAp+114F))
113 return 1;
114 if (test__floattisf(make_ti(0x0007FB72EBFFFFFFLL, 0), 0x1.FEDCBAp+114F))
115 return 1;
116 if (test__floattisf(make_ti(0x0007FB72EC000000LL, 0), 0x1.FEDCBCp+114F))
117 return 1;
118 if (test__floattisf(make_ti(0x0007FB72E8000001LL, 0), 0x1.FEDCBAp+114F))
119 return 1;
120
121 if (test__floattisf(make_ti(0x0007FB72E6000000LL, 0), 0x1.FEDCBAp+114F))
122 return 1;
123 if (test__floattisf(make_ti(0x0007FB72E7000000LL, 0), 0x1.FEDCBAp+114F))
124 return 1;
125 if (test__floattisf(make_ti(0x0007FB72E7FFFFFFLL, 0), 0x1.FEDCBAp+114F))
126 return 1;
127 if (test__floattisf(make_ti(0x0007FB72E4000001LL, 0), 0x1.FEDCBAp+114F))
128 return 1;
129 if (test__floattisf(make_ti(0x0007FB72E4000000LL, 0), 0x1.FEDCB8p+114F))
130 return 1;
131
132 #else
133 printf("skipped\n");
134 #endif
135 return 0;
136 }
137