1 //===-- fixunsxfti_test.c - Test __fixunsxfti -----------------------------===//
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 __fixunsxfti for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #if __x86_64
15
16 #include "int_lib.h"
17 #include <stdio.h>
18
19 // Returns: convert a to a unsigned long long, rounding toward zero.
20 // Negative values all become zero.
21
22 // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
23 // tu_int is a 64 bit integral type
24 // value in long double is representable in tu_int or is negative
25 // (no range checking performed)
26
27 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
28 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
29
30 tu_int __fixunsxfti(long double a);
31
test__fixunsxfti(long double a,tu_int expected)32 int test__fixunsxfti(long double a, tu_int expected)
33 {
34 tu_int x = __fixunsxfti(a);
35 if (x != expected)
36 {
37 utwords xt;
38 xt.all = x;
39 utwords expectedt;
40 expectedt.all = expected;
41 printf("error in __fixunsxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
42 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
43 }
44 return x != expected;
45 }
46
47 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
48 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
49 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
50
51 #endif
52
main()53 int main()
54 {
55 #if __x86_64
56 if (test__fixunsxfti(0.0, 0))
57 return 1;
58
59 if (test__fixunsxfti(0.5, 0))
60 return 1;
61 if (test__fixunsxfti(0.99, 0))
62 return 1;
63 if (test__fixunsxfti(1.0, 1))
64 return 1;
65 if (test__fixunsxfti(1.5, 1))
66 return 1;
67 if (test__fixunsxfti(1.99, 1))
68 return 1;
69 if (test__fixunsxfti(2.0, 2))
70 return 1;
71 if (test__fixunsxfti(2.01, 2))
72 return 1;
73 if (test__fixunsxfti(-0.5, 0))
74 return 1;
75 if (test__fixunsxfti(-0.99, 0))
76 return 1;
77 if (test__fixunsxfti(-1.0, 0))
78 return 1;
79 if (test__fixunsxfti(-1.5, 0))
80 return 1;
81 if (test__fixunsxfti(-1.99, 0))
82 return 1;
83 if (test__fixunsxfti(-2.0, 0))
84 return 1;
85 if (test__fixunsxfti(-2.01, 0))
86 return 1;
87
88 if (test__fixunsxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
89 return 1;
90 if (test__fixunsxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
91 return 1;
92
93 if (test__fixunsxfti(-0x1.FFFFFEp+62, 0))
94 return 1;
95 if (test__fixunsxfti(-0x1.FFFFFCp+62, 0))
96 return 1;
97
98 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
99 return 1;
100 if (test__fixunsxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
101 return 1;
102
103 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFp+62, 0))
104 return 1;
105 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFEp+62, 0))
106 return 1;
107
108 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
109 return 1;
110 if (test__fixunsxfti(0x1.0000000000000002p+63L, 0x8000000000000001LL))
111 return 1;
112 if (test__fixunsxfti(0x1.0000000000000000p+63L, 0x8000000000000000LL))
113 return 1;
114 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
115 return 1;
116 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
117 return 1;
118
119 if (test__fixunsxfti(-0x1.0000000000000000p+63L, 0))
120 return 1;
121 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
122 return 1;
123 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
124 return 1;
125
126 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+127L, make_ti(0xFFFFFFFFFFFFFFFFLL, 0)))
127 return 1;
128 if (test__fixunsxfti(0x1.0000000000000002p+127L, make_ti(0x8000000000000001LL, 0)))
129 return 1;
130 if (test__fixunsxfti(0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL, 0)))
131 return 1;
132 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, 0)))
133 return 1;
134 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+126L, make_ti(0x7FFFFFFFFFFFFFFELL, 0)))
135 return 1;
136
137 #else
138 printf("skipped\n");
139 #endif
140 return 0;
141 }
142