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1 //===-- fixunssfsi_test.c - Test __fixunssfsi -----------------------------===//
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 __fixunssfsi for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "int_lib.h"
15 #include <stdio.h>
16 
17 // Returns: convert a to a unsigned int, rounding toward zero.
18 //          Negative values all become zero.
19 
20 // Assumption: float is a IEEE 32 bit floating point type
21 //             su_int is a 32 bit integral type
22 //             value in float is representable in su_int or is negative
23 //                 (no range checking performed)
24 
25 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
26 
27 COMPILER_RT_ABI su_int __fixunssfsi(float a);
28 
test__fixunssfsi(float a,su_int expected)29 int test__fixunssfsi(float a, su_int expected)
30 {
31     su_int x = __fixunssfsi(a);
32     if (x != expected)
33         printf("error in __fixunssfsi(%A) = %X, expected %X\n", a, x, expected);
34     return x != expected;
35 }
36 
37 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
38 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
39 
main()40 int main()
41 {
42     if (test__fixunssfsi(0.0F, 0))
43         return 1;
44 
45     if (test__fixunssfsi(0.5F, 0))
46         return 1;
47     if (test__fixunssfsi(0.99F, 0))
48         return 1;
49     if (test__fixunssfsi(1.0F, 1))
50         return 1;
51     if (test__fixunssfsi(1.5F, 1))
52         return 1;
53     if (test__fixunssfsi(1.99F, 1))
54         return 1;
55     if (test__fixunssfsi(2.0F, 2))
56         return 1;
57     if (test__fixunssfsi(2.01F, 2))
58         return 1;
59     if (test__fixunssfsi(-0.5F, 0))
60         return 1;
61     if (test__fixunssfsi(-0.99F, 0))
62         return 1;
63 #if !TARGET_LIBGCC
64     if (test__fixunssfsi(-1.0F, 0))  // libgcc ignores "returns 0 for negative input" spec
65         return 1;
66     if (test__fixunssfsi(-1.5F, 0))
67         return 1;
68     if (test__fixunssfsi(-1.99F, 0))
69         return 1;
70     if (test__fixunssfsi(-2.0F, 0))
71         return 1;
72     if (test__fixunssfsi(-2.01F, 0))
73         return 1;
74 #endif
75 
76     if (test__fixunssfsi(0x1.000000p+31F, 0x80000000))
77         return 1;
78     if (test__fixunssfsi(0x1.000000p+32F, 0xFFFFFFFF))
79         return 1;
80     if (test__fixunssfsi(0x1.FFFFFEp+31F, 0xFFFFFF00))
81         return 1;
82     if (test__fixunssfsi(0x1.FFFFFEp+30F, 0x7FFFFF80))
83         return 1;
84     if (test__fixunssfsi(0x1.FFFFFCp+30F, 0x7FFFFF00))
85         return 1;
86 
87 #if !TARGET_LIBGCC
88     if (test__fixunssfsi(-0x1.FFFFFEp+30F, 0))
89         return 1;
90     if (test__fixunssfsi(-0x1.FFFFFCp+30F, 0))
91         return 1;
92 #endif
93 
94    return 0;
95 }
96