1 //===-- floatdisf_test.c - Test __floatdisf -------------------------------===//
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 __floatdisf 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 // di_int is a 64 bit integral type
22
23 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
24
25 float __floatdisf(di_int a);
26
test__floatdisf(di_int a,float expected)27 int test__floatdisf(di_int a, float expected)
28 {
29 float x = __floatdisf(a);
30 if (x != expected)
31 printf("error in __floatdisf(%llX) = %a, expected %a\n",
32 a, x, expected);
33 return x != expected;
34 }
35
36 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
37 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
38 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
39
main()40 int main()
41 {
42 if (test__floatdisf(0, 0.0F))
43 return 1;
44
45 if (test__floatdisf(1, 1.0F))
46 return 1;
47 if (test__floatdisf(2, 2.0F))
48 return 1;
49 if (test__floatdisf(-1, -1.0F))
50 return 1;
51 if (test__floatdisf(-2, -2.0F))
52 return 1;
53
54 if (test__floatdisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
55 return 1;
56 if (test__floatdisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
57 return 1;
58
59 if (test__floatdisf(0x8000008000000000LL, -0x1.FFFFFEp+62F))
60 return 1;
61 if (test__floatdisf(0x8000010000000000LL, -0x1.FFFFFCp+62F))
62 return 1;
63
64 if (test__floatdisf(0x8000000000000000LL, -0x1.000000p+63F))
65 return 1;
66 if (test__floatdisf(0x8000000000000001LL, -0x1.000000p+63F))
67 return 1;
68
69 if (test__floatdisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
70 return 1;
71
72 if (test__floatdisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
73 return 1;
74 if (test__floatdisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
75 return 1;
76 if (test__floatdisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
77 return 1;
78 if (test__floatdisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
79 return 1;
80 if (test__floatdisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
81 return 1;
82
83 if (test__floatdisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
84 return 1;
85 if (test__floatdisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
86 return 1;
87 if (test__floatdisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
88 return 1;
89 if (test__floatdisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
90 return 1;
91 if (test__floatdisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
92 return 1;
93
94 return 0;
95 }
96