1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_fixunsxfti
3 // REQUIRES: x86-target-arch
4
5 #include "int_lib.h"
6 #include <stdio.h>
7
8 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
9
10 // Returns: convert a to a unsigned long long, rounding toward zero.
11 // Negative values all become zero.
12
13 // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
14 // tu_int is a 64 bit integral type
15 // value in long double is representable in tu_int or is negative
16 // (no range checking performed)
17
18 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
19 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
20
21 COMPILER_RT_ABI tu_int __fixunsxfti(long double a);
22
test__fixunsxfti(long double a,tu_int expected)23 int test__fixunsxfti(long double a, tu_int expected)
24 {
25 tu_int x = __fixunsxfti(a);
26 if (x != expected)
27 {
28 utwords xt;
29 xt.all = x;
30 utwords expectedt;
31 expectedt.all = expected;
32 printf("error in __fixunsxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
33 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
34 }
35 return x != expected;
36 }
37
38 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
39 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
40 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
41
42 #endif
43
main()44 int main()
45 {
46 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
47 if (test__fixunsxfti(0.0, 0))
48 return 1;
49
50 if (test__fixunsxfti(0.5, 0))
51 return 1;
52 if (test__fixunsxfti(0.99, 0))
53 return 1;
54 if (test__fixunsxfti(1.0, 1))
55 return 1;
56 if (test__fixunsxfti(1.5, 1))
57 return 1;
58 if (test__fixunsxfti(1.99, 1))
59 return 1;
60 if (test__fixunsxfti(2.0, 2))
61 return 1;
62 if (test__fixunsxfti(2.01, 2))
63 return 1;
64 if (test__fixunsxfti(-0.5, 0))
65 return 1;
66 if (test__fixunsxfti(-0.99, 0))
67 return 1;
68 if (test__fixunsxfti(-1.0, 0))
69 return 1;
70 if (test__fixunsxfti(-1.5, 0))
71 return 1;
72 if (test__fixunsxfti(-1.99, 0))
73 return 1;
74 if (test__fixunsxfti(-2.0, 0))
75 return 1;
76 if (test__fixunsxfti(-2.01, 0))
77 return 1;
78
79 if (test__fixunsxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
80 return 1;
81 if (test__fixunsxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
82 return 1;
83
84 if (test__fixunsxfti(-0x1.FFFFFEp+62, 0))
85 return 1;
86 if (test__fixunsxfti(-0x1.FFFFFCp+62, 0))
87 return 1;
88
89 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
90 return 1;
91 if (test__fixunsxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
92 return 1;
93
94 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFp+62, 0))
95 return 1;
96 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFEp+62, 0))
97 return 1;
98
99 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
100 return 1;
101 if (test__fixunsxfti(0x1.0000000000000002p+63L, 0x8000000000000001LL))
102 return 1;
103 if (test__fixunsxfti(0x1.0000000000000000p+63L, 0x8000000000000000LL))
104 return 1;
105 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
106 return 1;
107 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
108 return 1;
109
110 if (test__fixunsxfti(-0x1.0000000000000000p+63L, 0))
111 return 1;
112 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
113 return 1;
114 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
115 return 1;
116
117 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+127L, make_ti(0xFFFFFFFFFFFFFFFFLL, 0)))
118 return 1;
119 if (test__fixunsxfti(0x1.0000000000000002p+127L, make_ti(0x8000000000000001LL, 0)))
120 return 1;
121 if (test__fixunsxfti(0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL, 0)))
122 return 1;
123 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, 0)))
124 return 1;
125 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+126L, make_ti(0x7FFFFFFFFFFFFFFELL, 0)))
126 return 1;
127
128 #else
129 printf("skipped\n");
130 #endif
131 return 0;
132 }
133