1//===-- floatundisf_test.c - Test __floatundisf ---------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. 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
25float __floatundisf(du_int a);
26
27int 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
36char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
37char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
38char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
39
40int 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