1//===-- fixdfdi_test.c - Test __fixdfdi -----------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file tests __fixdfdi for the compiler_rt library.
11//
12//===----------------------------------------------------------------------===//
13
14#include "int_lib.h"
15#include <stdio.h>
16
17// Returns: convert a to a signed long long, rounding toward zero.
18
19// Assumption: double is a IEEE 64 bit floating point type
20//             su_int is a 32 bit integral type
21//             value in double is representable in di_int (no range checking performed)
22
23// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
24
25di_int __fixdfdi(double a);
26
27int test__fixdfdi(double a, di_int expected)
28{
29    di_int x = __fixdfdi(a);
30    if (x != expected)
31        printf("error in __fixdfdi(%A) = %llX, expected %llX\n", a, x, expected);
32    return x != expected;
33}
34
35char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
36char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
37char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
38
39int main()
40{
41    if (test__fixdfdi(0.0, 0))
42        return 1;
43
44    if (test__fixdfdi(0.5, 0))
45        return 1;
46    if (test__fixdfdi(0.99, 0))
47        return 1;
48    if (test__fixdfdi(1.0, 1))
49        return 1;
50    if (test__fixdfdi(1.5, 1))
51        return 1;
52    if (test__fixdfdi(1.99, 1))
53        return 1;
54    if (test__fixdfdi(2.0, 2))
55        return 1;
56    if (test__fixdfdi(2.01, 2))
57        return 1;
58    if (test__fixdfdi(-0.5, 0))
59        return 1;
60    if (test__fixdfdi(-0.99, 0))
61        return 1;
62    if (test__fixdfdi(-1.0, -1))
63        return 1;
64    if (test__fixdfdi(-1.5, -1))
65        return 1;
66    if (test__fixdfdi(-1.99, -1))
67        return 1;
68    if (test__fixdfdi(-2.0, -2))
69        return 1;
70    if (test__fixdfdi(-2.01, -2))
71        return 1;
72
73    if (test__fixdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
74        return 1;
75    if (test__fixdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
76        return 1;
77
78    if (test__fixdfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL))
79        return 1;
80    if (test__fixdfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL))
81        return 1;
82
83    if (test__fixdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
84        return 1;
85    if (test__fixdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
86        return 1;
87
88    if (test__fixdfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL))
89        return 1;
90    if (test__fixdfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL))
91        return 1;
92
93   return 0;
94}
95