1 //===-- fixunssfti_test.c - Test __fixunssfti -----------------------------===//
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 __fixunssfti 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 unsigned long long, rounding toward zero.
20 // Negative values all become zero.
21
22 // Assumption: float is a IEEE 32 bit floating point type
23 // tu_int is a 64 bit integral type
24 // value in float is representable in tu_int or is negative
25 // (no range checking performed)
26
27 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
28
29 COMPILER_RT_ABI tu_int __fixunssfti(float a);
30
test__fixunssfti(float a,tu_int expected)31 int test__fixunssfti(float a, tu_int expected)
32 {
33 tu_int x = __fixunssfti(a);
34 if (x != expected)
35 {
36 utwords xt;
37 xt.all = x;
38 utwords expectedt;
39 expectedt.all = expected;
40 printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
41 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
42 }
43 return x != expected;
44 }
45
46 char assumption_1[sizeof(tu_int) == 2*sizeof(di_int)] = {0};
47 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
48 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
49
50 #endif
51
main()52 int main()
53 {
54 #ifdef CRT_HAS_128BIT
55 if (test__fixunssfti(0.0F, 0))
56 return 1;
57
58 if (test__fixunssfti(0.5F, 0))
59 return 1;
60 if (test__fixunssfti(0.99F, 0))
61 return 1;
62 if (test__fixunssfti(1.0F, 1))
63 return 1;
64 if (test__fixunssfti(1.5F, 1))
65 return 1;
66 if (test__fixunssfti(1.99F, 1))
67 return 1;
68 if (test__fixunssfti(2.0F, 2))
69 return 1;
70 if (test__fixunssfti(2.01F, 2))
71 return 1;
72 if (test__fixunssfti(-0.5F, 0))
73 return 1;
74 if (test__fixunssfti(-0.99F, 0))
75 return 1;
76 #if !TARGET_LIBGCC
77 if (test__fixunssfti(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
78 return 1;
79 if (test__fixunssfti(-1.5F, 0))
80 return 1;
81 if (test__fixunssfti(-1.99F, 0))
82 return 1;
83 if (test__fixunssfti(-2.0F, 0))
84 return 1;
85 if (test__fixunssfti(-2.01F, 0))
86 return 1;
87 #endif
88
89 if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000LL))
90 return 1;
91 if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000LL))
92 return 1;
93 if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
94 return 1;
95 if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
96 return 1;
97
98 if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000LL, 0)))
99 return 1;
100 if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000LL, 0)))
101 return 1;
102 if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
103 return 1;
104 if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
105 return 1;
106
107 #if !TARGET_LIBGCC
108 if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
109 return 1;
110 if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
111 return 1;
112 if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))
113 return 1;
114 if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))
115 return 1;
116 #endif
117
118 #endif
119 return 0;
120 }
121