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
31 du_int __fixunsxfdi(long double a);
32
test__fixunsxfdi(long double a,du_int expected)33 int 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
42 char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};
43 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
44 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
45 #endif
46
main()47 int 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