1//===-- fixunsxfdi_test.c - Test __fixunsxfdi -----------------------------===//
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 __fixunsxfdi for the compiler_rt library.
11//
12//===----------------------------------------------------------------------===//
13
14#include "int_lib.h"
15#include <stdio.h>
16#include <limits.h>
17
18
19#if HAS_80_BIT_LONG_DOUBLE
20// Returns: convert a to a unsigned long long, rounding toward zero.
21//          Negative values all become zero.
22
23// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
24//             du_int is a 64 bit integral type
25//             value in long double is representable in du_int or is negative
26//                 (no range checking performed)
27
28// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
29// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
30
31du_int __fixunsxfdi(long double a);
32
33int test__fixunsxfdi(long double a, du_int expected)
34{
35    du_int x = __fixunsxfdi(a);
36    if (x != expected)
37        printf("error in __fixunsxfdi(%LA) = %llX, expected %llX\n",
38               a, x, expected);
39    return x != expected;
40}
41
42char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};
43char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
44char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
45#endif
46
47int main()
48{
49#if HAS_80_BIT_LONG_DOUBLE
50    if (test__fixunsxfdi(0.0, 0))
51        return 1;
52
53    if (test__fixunsxfdi(0.5, 0))
54        return 1;
55    if (test__fixunsxfdi(0.99, 0))
56        return 1;
57    if (test__fixunsxfdi(1.0, 1))
58        return 1;
59    if (test__fixunsxfdi(1.5, 1))
60        return 1;
61    if (test__fixunsxfdi(1.99, 1))
62        return 1;
63    if (test__fixunsxfdi(2.0, 2))
64        return 1;
65    if (test__fixunsxfdi(2.01, 2))
66        return 1;
67    if (test__fixunsxfdi(-0.5, 0))
68        return 1;
69    if (test__fixunsxfdi(-0.99, 0))
70        return 1;
71    if (test__fixunsxfdi(-1.0, 0))
72        return 1;
73    if (test__fixunsxfdi(-1.5, 0))
74        return 1;
75    if (test__fixunsxfdi(-1.99, 0))
76        return 1;
77    if (test__fixunsxfdi(-2.0, 0))
78        return 1;
79    if (test__fixunsxfdi(-2.01, 0))
80        return 1;
81
82    if (test__fixunsxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
83        return 1;
84    if (test__fixunsxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
85        return 1;
86
87    if (test__fixunsxfdi(-0x1.FFFFFEp+62, 0))
88        return 1;
89    if (test__fixunsxfdi(-0x1.FFFFFCp+62, 0))
90        return 1;
91
92    if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
93        return 1;
94    if (test__fixunsxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
95        return 1;
96
97    if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
98        return 1;
99    if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
100        return 1;
101
102    if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
103        return 1;
104    if (test__fixunsxfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL))
105        return 1;
106    if (test__fixunsxfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL))
107        return 1;
108    if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
109        return 1;
110    if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
111        return 1;
112
113    if (test__fixunsxfdi(-0x1.0000000000000000p+63L, 0))
114        return 1;
115    if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
116        return 1;
117    if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
118        return 1;
119
120#else
121    printf("skipped\n");
122#endif
123   return 0;
124}
125