1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: librt_has_fixxfti
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 signed long long, rounding toward zero.
11
12// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
13// su_int is a 32 bit integral type
14// value in long double is representable in ti_int (no range checking performed)
15
16// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
17// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
18
19COMPILER_RT_ABI ti_int __fixxfti(long double a);
20
21int test__fixxfti(long double a, ti_int expected)
22{
23 ti_int x = __fixxfti(a);
24 if (x != expected)
25 {
26 utwords xt;
27 xt.all = x;
28 utwords expectedt;
29 expectedt.all = expected;
30 printf("error in __fixxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
31 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
32 }
33 return x != expected;
34}
35
36COMPILE_TIME_ASSERT(sizeof(ti_int) == 2*sizeof(di_int));
37COMPILE_TIME_ASSERT(sizeof(su_int)*CHAR_BIT == 32);
38COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128);
39
40#endif
41
42int main()
43{
44#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
45 if (test__fixxfti(0.0, 0))
46 return 1;
47
48 if (test__fixxfti(0.5, 0))
49 return 1;
50 if (test__fixxfti(0.99, 0))
51 return 1;
52 if (test__fixxfti(1.0, 1))
53 return 1;
54 if (test__fixxfti(1.5, 1))
55 return 1;
56 if (test__fixxfti(1.99, 1))
57 return 1;
58 if (test__fixxfti(2.0, 2))
59 return 1;
60 if (test__fixxfti(2.01, 2))
61 return 1;
62 if (test__fixxfti(-0.5, 0))
63 return 1;
64 if (test__fixxfti(-0.99, 0))
65 return 1;
66 if (test__fixxfti(-1.0, -1))
67 return 1;
68 if (test__fixxfti(-1.5, -1))
69 return 1;
70 if (test__fixxfti(-1.99, -1))
71 return 1;
72 if (test__fixxfti(-2.0, -2))
73 return 1;
74 if (test__fixxfti(-2.01, -2))
75 return 1;
76
77 if (test__fixxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
78 return 1;
79 if (test__fixxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
80 return 1;
81
82 if (test__fixxfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
83 0x8000008000000000LL)))
84 return 1;
85 if (test__fixxfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
86 0x8000010000000000LL)))
87 return 1;
88
89 if (test__fixxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
90 return 1;
91 if (test__fixxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
92 return 1;
93
94 if (test__fixxfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
95 0x8000000000000400LL)))
96 return 1;
97 if (test__fixxfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
98 0x8000000000000800LL)))
99 return 1;
100
101 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
102 return 1;
103 if (test__fixxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
104 return 1;
105
106 if (test__fixxfti(-0x1.0000000000000000p+63L, make_ti(0xFFFFFFFFFFFFFFFFLL,
107 0x8000000000000000LL)))
108 return 1;
109 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,
110 0x8000000000000001LL)))
111 return 1;
112 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,
113 0x8000000000000002LL)))
114 return 1;
115
116 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,
117 0x8000000000000000LL)))
118 return 1;
119 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,
120 0x0000000000000000LL)))
121
122 return 1;
123
124 if (test__fixxfti(-0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL,
125 0x0000000000000000LL)))
126 return 1;
127 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x8000000000000000LL,
128 0x8000000000000000LL)))
129 return 1;
130 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x8000000000000001LL,
131 0x0000000000000000LL)))
132 return 1;
133#else
134 printf("skipped\n");
135#endif
136 return 0;
137}
138