1 //===-- floatundisf_test.c - Test __floatundisf ---------------------------===//
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 __floatundisf 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 float, rounding toward even.
19
20 // Assumption: float is a IEEE 32 bit floating point type
21 // du_int is a 64 bit integral type
22
23 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
24
25 COMPILER_RT_ABI float __floatundisf(du_int a);
26
test__floatundisf(du_int a,float expected)27 int test__floatundisf(du_int a, float expected)
28 {
29 float x = __floatundisf(a);
30 if (x != expected)
31 printf("error in __floatundisf(%llX) = %a, expected %a\n",
32 a, x, expected);
33 return x != expected;
34 }
35
36 char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
37 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
38 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
39
main()40 int main()
41 {
42 if (test__floatundisf(0, 0.0F))
43 return 1;
44
45 if (test__floatundisf(1, 1.0F))
46 return 1;
47 if (test__floatundisf(2, 2.0F))
48 return 1;
49
50 if (test__floatundisf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62F))
51 return 1;
52 if (test__floatundisf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62F))
53 return 1;
54
55 if (test__floatundisf(0x8000008000000000ULL, 0x1p+63F))
56 return 1;
57 if (test__floatundisf(0x8000010000000000LL, 0x1.000002p+63F))
58 return 1;
59
60 if (test__floatundisf(0x8000000000000000LL, 0x1p+63F))
61 return 1;
62 if (test__floatundisf(0x8000000000000001LL, 0x1p+63F))
63 return 1;
64
65 if (test__floatundisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F))
66 return 1;
67 if (test__floatundisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F))
68 return 1;
69
70 if (test__floatundisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
71 return 1;
72
73 if (test__floatundisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
74 return 1;
75 if (test__floatundisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
76 return 1;
77 if (test__floatundisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
78 return 1;
79 if (test__floatundisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
80 return 1;
81 if (test__floatundisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
82 return 1;
83
84 if (test__floatundisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
85 return 1;
86 if (test__floatundisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
87 return 1;
88 if (test__floatundisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
89 return 1;
90 if (test__floatundisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
91 return 1;
92 if (test__floatundisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
93 return 1;
94
95 return 0;
96 }
97