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