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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 | su_int __fixunssfsi(float a); | |
28 | ||
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 | ||
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.FFFFFEp+31F, 0xFFFFFF00)) | |
79 | return 1; | |
80 | if (test__fixunssfsi(0x1.FFFFFEp+30F, 0x7FFFFF80)) | |
81 | return 1; | |
82 | if (test__fixunssfsi(0x1.FFFFFCp+30F, 0x7FFFFF00)) | |
83 | return 1; | |
84 | ||
85 | #if !TARGET_LIBGCC | |
86 | if (test__fixunssfsi(-0x1.FFFFFEp+30F, 0)) | |
87 | return 1; | |
88 | if (test__fixunssfsi(-0x1.FFFFFCp+30F, 0)) | |
89 | return 1; | |
90 | #endif | |
91 | ||
92 | return 0; | |
93 | } |