1 //===-- fixunsdfdi_test.c - Test __fixunsdfdi -----------------------------===//
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 __fixunsdfdi 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 long long, rounding toward zero.
18 // Negative values all become zero.
19
20 // Assumption: double is a IEEE 64 bit floating point type
21 // du_int is a 64 bit integral type
22 // value in double is representable in du_int or is negative
23 // (no range checking performed)
24
25 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
26
27 COMPILER_RT_ABI du_int __fixunsdfdi(double a);
28
test__fixunsdfdi(double a,du_int expected)29 int test__fixunsdfdi(double a, du_int expected)
30 {
31 du_int x = __fixunsdfdi(a);
32 if (x != expected)
33 printf("error in __fixunsdfdi(%A) = %llX, expected %llX\n", a, x, expected);
34 return x != expected;
35 }
36
37 char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};
38 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
39 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
40
main()41 int main()
42 {
43 if (test__fixunsdfdi(0.0, 0))
44 return 1;
45
46 if (test__fixunsdfdi(0.5, 0))
47 return 1;
48 if (test__fixunsdfdi(0.99, 0))
49 return 1;
50 if (test__fixunsdfdi(1.0, 1))
51 return 1;
52 if (test__fixunsdfdi(1.5, 1))
53 return 1;
54 if (test__fixunsdfdi(1.99, 1))
55 return 1;
56 if (test__fixunsdfdi(2.0, 2))
57 return 1;
58 if (test__fixunsdfdi(2.01, 2))
59 return 1;
60 if (test__fixunsdfdi(-0.5, 0))
61 return 1;
62 if (test__fixunsdfdi(-0.99, 0))
63 return 1;
64 #if !TARGET_LIBGCC
65 if (test__fixunsdfdi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec
66 return 1;
67 if (test__fixunsdfdi(-1.5, 0))
68 return 1;
69 if (test__fixunsdfdi(-1.99, 0))
70 return 1;
71 if (test__fixunsdfdi(-2.0, 0))
72 return 1;
73 if (test__fixunsdfdi(-2.01, 0))
74 return 1;
75 #endif
76
77 if (test__fixunsdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
78 return 1;
79 if (test__fixunsdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
80 return 1;
81
82 #if !TARGET_LIBGCC
83 if (test__fixunsdfdi(-0x1.FFFFFEp+62, 0))
84 return 1;
85 if (test__fixunsdfdi(-0x1.FFFFFCp+62, 0))
86 return 1;
87 #endif
88
89 if (test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800LL))
90 return 1;
91 if (test__fixunsdfdi(0x1.0000000000000p+63, 0x8000000000000000LL))
92 return 1;
93 if (test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
94 return 1;
95 if (test__fixunsdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
96 return 1;
97
98 if (test__fixunsdfdi(0x1.p+64, 0xFFFFFFFFFFFFFFFFLL))
99 return 1;
100
101 #if !TARGET_LIBGCC
102 if (test__fixunsdfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
103 return 1;
104 if (test__fixunsdfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
105 return 1;
106 #endif
107
108 return 0;
109 }
110