1 //===-- floatuntisf.c - Test __floatuntisf --------------------------------===//
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 __floatuntisf for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "int_lib.h"
15 #include <float.h>
16 #include <stdio.h>
17 
18 #ifdef CRT_HAS_128BIT
19 
20 // Returns: convert a to a float, rounding toward even.
21 
22 // Assumption: float is a IEEE 32 bit floating point type
23 //             tu_int is a 128 bit integral type
24 
25 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
26 
27 float __floatuntisf(tu_int a);
28 
test__floatuntisf(tu_int a,float expected)29 int test__floatuntisf(tu_int a, float expected)
30 {
31     float x = __floatuntisf(a);
32     if (x != expected)
33     {
34         utwords at;
35         at.all = a;
36         printf("error in __floatuntisf(0x%.16llX%.16llX) = %a, expected %a\n",
37                at.s.high, at.s.low, x, expected);
38     }
39     return x != expected;
40 }
41 
42 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
43 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
44 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
45 
46 #endif
47 
main()48 int main()
49 {
50 #ifdef CRT_HAS_128BIT
51     if (test__floatuntisf(0, 0.0F))
52         return 1;
53 
54     if (test__floatuntisf(1, 1.0F))
55         return 1;
56     if (test__floatuntisf(2, 2.0F))
57         return 1;
58     if (test__floatuntisf(20, 20.0F))
59         return 1;
60 
61     if (test__floatuntisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
62         return 1;
63     if (test__floatuntisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
64         return 1;
65 
66     if (test__floatuntisf(make_ti(0x8000008000000000LL, 0), 0x1.000001p+127F))
67         return 1;
68     if (test__floatuntisf(make_ti(0x8000000000000800LL, 0), 0x1.0p+127F))
69         return 1;
70     if (test__floatuntisf(make_ti(0x8000010000000000LL, 0), 0x1.000002p+127F))
71         return 1;
72 
73     if (test__floatuntisf(make_ti(0x8000000000000000LL, 0), 0x1.000000p+127F))
74         return 1;
75 
76     if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
77         return 1;
78 
79     if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50F))
80         return 1;
81     if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50F))
82         return 1;
83 
84     if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50F))
85         return 1;
86 
87     if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50F))
88         return 1;
89     if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50F))
90         return 1;
91     if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50F))
92         return 1;
93 
94     if (test__floatuntisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F))
95         return 1;
96     if (test__floatuntisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F))
97         return 1;
98 
99     if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
100         return 1;
101 
102     if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
103         return 1;
104     if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
105         return 1;
106     if (test__floatuntisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
107         return 1;
108     if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
109         return 1;
110     if (test__floatuntisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
111         return 1;
112 
113     if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
114         return 1;
115     if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
116         return 1;
117     if (test__floatuntisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
118         return 1;
119     if (test__floatuntisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
120         return 1;
121     if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
122         return 1;
123 
124     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCB90000000000001LL),
125                           0x1.FEDCBAp+76F))
126         return 1;
127     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBA0000000000000LL),
128                           0x1.FEDCBAp+76F))
129         return 1;
130     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBAFFFFFFFFFFFFFLL),
131                           0x1.FEDCBAp+76F))
132         return 1;
133     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000000LL),
134                           0x1.FEDCBCp+76F))
135         return 1;
136     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000001LL),
137                           0x1.FEDCBCp+76F))
138         return 1;
139     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBBFFFFFFFFFFFFFLL),
140                           0x1.FEDCBCp+76F))
141         return 1;
142     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000000LL),
143                           0x1.FEDCBCp+76F))
144         return 1;
145     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000001LL),
146                           0x1.FEDCBCp+76F))
147         return 1;
148     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000000LL),
149                           0x1.FEDCBCp+76F))
150         return 1;
151     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000001LL),
152                           0x1.FEDCBEp+76F))
153         return 1;
154     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBDFFFFFFFFFFFFFLL),
155                           0x1.FEDCBEp+76F))
156         return 1;
157     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBE0000000000000LL),
158                           0x1.FEDCBEp+76F))
159         return 1;
160 
161 #else
162     printf("skipped\n");
163 #endif
164    return 0;
165 }
166