1//===-- fixxfti_test.c - Test __fixxfti -----------------------------------===//
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 __fixxfti 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 signed long long, rounding toward zero.
20
21// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
22//             su_int is a 32 bit integral type
23//             value in long double is representable in ti_int (no range checking performed)
24
25// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
26// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
27
28COMPILER_RT_ABI ti_int __fixxfti(long double a);
29
30int test__fixxfti(long double a, ti_int expected)
31{
32    ti_int x = __fixxfti(a);
33    if (x != expected)
34    {
35        utwords xt;
36        xt.all = x;
37        utwords expectedt;
38        expectedt.all = expected;
39        printf("error in __fixxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
40               a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
41    }
42    return x != expected;
43}
44
45char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
46char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
47char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
48
49#endif
50
51int main()
52{
53#ifdef CRT_HAS_128BIT
54    if (test__fixxfti(0.0, 0))
55        return 1;
56
57    if (test__fixxfti(0.5, 0))
58        return 1;
59    if (test__fixxfti(0.99, 0))
60        return 1;
61    if (test__fixxfti(1.0, 1))
62        return 1;
63    if (test__fixxfti(1.5, 1))
64        return 1;
65    if (test__fixxfti(1.99, 1))
66        return 1;
67    if (test__fixxfti(2.0, 2))
68        return 1;
69    if (test__fixxfti(2.01, 2))
70        return 1;
71    if (test__fixxfti(-0.5, 0))
72        return 1;
73    if (test__fixxfti(-0.99, 0))
74        return 1;
75    if (test__fixxfti(-1.0, -1))
76        return 1;
77    if (test__fixxfti(-1.5, -1))
78        return 1;
79    if (test__fixxfti(-1.99, -1))
80        return 1;
81    if (test__fixxfti(-2.0, -2))
82        return 1;
83    if (test__fixxfti(-2.01, -2))
84        return 1;
85
86    if (test__fixxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
87        return 1;
88    if (test__fixxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
89        return 1;
90
91    if (test__fixxfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
92                                               0x8000008000000000LL)))
93        return 1;
94    if (test__fixxfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
95                                               0x8000010000000000LL)))
96        return 1;
97
98    if (test__fixxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
99        return 1;
100    if (test__fixxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
101        return 1;
102
103    if (test__fixxfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
104                                                      0x8000000000000400LL)))
105        return 1;
106    if (test__fixxfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
107                                                      0x8000000000000800LL)))
108        return 1;
109
110    if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
111        return 1;
112    if (test__fixxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
113        return 1;
114
115    if (test__fixxfti(-0x1.0000000000000000p+63L, make_ti(0xFFFFFFFFFFFFFFFFLL,
116                                                          0x8000000000000000LL)))
117        return 1;
118    if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,
119                                                          0x8000000000000001LL)))
120        return 1;
121    if (test__fixxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,
122                                                          0x8000000000000002LL)))
123        return 1;
124
125    if (test__fixxfti(0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,
126                                                          0x8000000000000000LL)))
127        return 1;
128    if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,
129                                                          0x0000000000000000LL)))
130
131        return 1;
132
133    if (test__fixxfti(-0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL,
134                                                           0x0000000000000000LL)))
135        return 1;
136    if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x8000000000000000LL,
137                                                           0x8000000000000000LL)))
138        return 1;
139    if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x8000000000000001LL,
140                                                           0x0000000000000000LL)))
141        return 1;
142#else
143    printf("skipped\n");
144#endif
145   return 0;
146}
147