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
25COMPILER_RT_ABI float __floatdisf(di_int a);
26
27int 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
36char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
37char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
38char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
39
40int 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