1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: librt_has_floatuntisf
3
4#include "int_lib.h"
5#include <float.h>
6#include <stdio.h>
7
8#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
9
10// Returns: convert a to a float, rounding toward even.
11
12// Assumption: float is a IEEE 32 bit floating point type
13// tu_int is a 128 bit integral type
14
15// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
16
17COMPILER_RT_ABI float __floatuntisf(tu_int a);
18
19int test__floatuntisf(tu_int a, float expected)
20{
21 float x = __floatuntisf(a);
22 if (x != expected)
23 {
24 utwords at;
25 at.all = a;
26 printf("error in __floatuntisf(0x%.16llX%.16llX) = %a, expected %a\n",
27 at.s.high, at.s.low, x, expected);
28 }
29 return x != expected;
30}
31
32COMPILE_TIME_ASSERT(sizeof(tu_int) == 2*sizeof(du_int));
33COMPILE_TIME_ASSERT(sizeof(tu_int)*CHAR_BIT == 128);
34COMPILE_TIME_ASSERT(sizeof(float)*CHAR_BIT == 32);
35
36#endif
37
38int main()
39{
40#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
41 if (test__floatuntisf(0, 0.0F))
42 return 1;
43
44 if (test__floatuntisf(1, 1.0F))
45 return 1;
46 if (test__floatuntisf(2, 2.0F))
47 return 1;
48 if (test__floatuntisf(20, 20.0F))
49 return 1;
50
51 if (test__floatuntisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
52 return 1;
53 if (test__floatuntisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
54 return 1;
55
56 if (test__floatuntisf(make_ti(0x8000008000000000LL, 0), 0x1.000001p+127F))
57 return 1;
58 if (test__floatuntisf(make_ti(0x8000000000000800LL, 0), 0x1.0p+127F))
59 return 1;
60 if (test__floatuntisf(make_ti(0x8000010000000000LL, 0), 0x1.000002p+127F))
61 return 1;
62
63 if (test__floatuntisf(make_ti(0x8000000000000000LL, 0), 0x1.000000p+127F))
64 return 1;
65
66 if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
67 return 1;
68
69 if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50F))
70 return 1;
71 if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50F))
72 return 1;
73
74 if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50F))
75 return 1;
76
77 if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50F))
78 return 1;
79 if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50F))
80 return 1;
81 if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50F))
82 return 1;
83
84 if (test__floatuntisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F))
85 return 1;
86 if (test__floatuntisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F))
87 return 1;
88
89 if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
90 return 1;
91
92 if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
93 return 1;
94 if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
95 return 1;
96 if (test__floatuntisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
97 return 1;
98 if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
99 return 1;
100 if (test__floatuntisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
101 return 1;
102
103 if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
104 return 1;
105 if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
106 return 1;
107 if (test__floatuntisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
108 return 1;
109 if (test__floatuntisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
110 return 1;
111 if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
112 return 1;
113
114 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCB90000000000001LL),
115 0x1.FEDCBAp+76F))
116 return 1;
117 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBA0000000000000LL),
118 0x1.FEDCBAp+76F))
119 return 1;
120 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBAFFFFFFFFFFFFFLL),
121 0x1.FEDCBAp+76F))
122 return 1;
123 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000000LL),
124 0x1.FEDCBCp+76F))
125 return 1;
126 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000001LL),
127 0x1.FEDCBCp+76F))
128 return 1;
129 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBBFFFFFFFFFFFFFLL),
130 0x1.FEDCBCp+76F))
131 return 1;
132 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000000LL),
133 0x1.FEDCBCp+76F))
134 return 1;
135 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000001LL),
136 0x1.FEDCBCp+76F))
137 return 1;
138 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000000LL),
139 0x1.FEDCBCp+76F))
140 return 1;
141 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000001LL),
142 0x1.FEDCBEp+76F))
143 return 1;
144 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBDFFFFFFFFFFFFFLL),
145 0x1.FEDCBEp+76F))
146 return 1;
147 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBE0000000000000LL),
148 0x1.FEDCBEp+76F))
149 return 1;
150
151#else
152 printf("skipped\n");
153#endif
154 return 0;
155}
156