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1 //===-- fixsfti_test.c - Test __fixsfti -----------------------------------===//
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 __fixsfti for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "int_lib.h"
15 #include <stdio.h>
16 
17 #ifdef CRT_HAS_128BIT
18 
19 // Returns: convert a to a signed long long, rounding toward zero.
20 
21 // Assumption: float is a IEEE 32 bit floating point type
22 //             su_int is a 32 bit integral type
23 //             value in float is representable in ti_int (no range checking performed)
24 
25 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
26 
27 COMPILER_RT_ABI ti_int __fixsfti(float a);
28 
test__fixsfti(float a,ti_int expected)29 int test__fixsfti(float a, ti_int expected)
30 {
31     ti_int x = __fixsfti(a);
32     if (x != expected)
33     {
34         twords xt;
35         xt.all = x;
36         twords expectedt;
37         expectedt.all = expected;
38         printf("error in __fixsfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
39         a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
40     }
41     return x != expected;
42 }
43 
44 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
45 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
46 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
47 
48 #endif
49 
main()50 int main()
51 {
52 #ifdef CRT_HAS_128BIT
53     if (test__fixsfti(0.0F, 0))
54         return 1;
55 
56     if (test__fixsfti(0.5F, 0))
57         return 1;
58     if (test__fixsfti(0.99F, 0))
59         return 1;
60     if (test__fixsfti(1.0F, 1))
61         return 1;
62     if (test__fixsfti(1.5F, 1))
63         return 1;
64     if (test__fixsfti(1.99F, 1))
65         return 1;
66     if (test__fixsfti(2.0F, 2))
67         return 1;
68     if (test__fixsfti(2.01F, 2))
69         return 1;
70     if (test__fixsfti(-0.5F, 0))
71         return 1;
72     if (test__fixsfti(-0.99F, 0))
73         return 1;
74     if (test__fixsfti(-1.0F, -1))
75         return 1;
76     if (test__fixsfti(-1.5F, -1))
77         return 1;
78     if (test__fixsfti(-1.99F, -1))
79         return 1;
80     if (test__fixsfti(-2.0F, -2))
81         return 1;
82     if (test__fixsfti(-2.01F, -2))
83         return 1;
84 
85     if (test__fixsfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
86         return 1;
87     if (test__fixsfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
88         return 1;
89 
90     if (test__fixsfti(-0x1.FFFFFEp+62F, make_ti(0xFFFFFFFFFFFFFFFFLL,
91                                                 0x8000008000000000LL)))
92         return 1;
93     if (test__fixsfti(-0x1.FFFFFCp+62F, make_ti(0xFFFFFFFFFFFFFFFFLL,
94                                                 0x8000010000000000LL)))
95         return 1;
96 
97     if (test__fixsfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
98         return 1;
99     if (test__fixsfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
100         return 1;
101 
102     if (test__fixsfti(-0x1.FFFFFEp+126F, make_ti(0x8000008000000000LL, 0)))
103         return 1;
104     if (test__fixsfti(-0x1.FFFFFCp+126F, make_ti(0x8000010000000000LL, 0)))
105         return 1;
106 
107 #else
108     printf("skipped\n");
109 #endif
110    return 0;
111 }
112