1 //===-- fixxfdi_test.c - Test __fixxfdi -----------------------------------===//
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 __fixxfdi for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "int_lib.h"
15 #include <stdio.h>
16
17
18 #if HAS_80_BIT_LONG_DOUBLE
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 di_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
28 di_int __fixxfdi(long double a);
29
test__fixxfdi(long double a,di_int expected)30 int test__fixxfdi(long double a, di_int expected)
31 {
32 di_int x = __fixxfdi(a);
33 if (x != expected)
34 printf("error in __fixxfdi(%LA) = %llX, expected %llX\n",
35 a, x, expected);
36 return x != expected;
37 }
38
39 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
40 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
41 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
42 #endif
43
main()44 int main()
45 {
46 #if HAS_80_BIT_LONG_DOUBLE
47 if (test__fixxfdi(0.0, 0))
48 return 1;
49
50 if (test__fixxfdi(0.5, 0))
51 return 1;
52 if (test__fixxfdi(0.99, 0))
53 return 1;
54 if (test__fixxfdi(1.0, 1))
55 return 1;
56 if (test__fixxfdi(1.5, 1))
57 return 1;
58 if (test__fixxfdi(1.99, 1))
59 return 1;
60 if (test__fixxfdi(2.0, 2))
61 return 1;
62 if (test__fixxfdi(2.01, 2))
63 return 1;
64 if (test__fixxfdi(-0.5, 0))
65 return 1;
66 if (test__fixxfdi(-0.99, 0))
67 return 1;
68 if (test__fixxfdi(-1.0, -1))
69 return 1;
70 if (test__fixxfdi(-1.5, -1))
71 return 1;
72 if (test__fixxfdi(-1.99, -1))
73 return 1;
74 if (test__fixxfdi(-2.0, -2))
75 return 1;
76 if (test__fixxfdi(-2.01, -2))
77 return 1;
78
79 if (test__fixxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
80 return 1;
81 if (test__fixxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
82 return 1;
83
84 if (test__fixxfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL))
85 return 1;
86 if (test__fixxfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL))
87 return 1;
88
89 if (test__fixxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
90 return 1;
91 if (test__fixxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
92 return 1;
93
94 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL))
95 return 1;
96 if (test__fixxfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL))
97 return 1;
98
99 if (test__fixxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
100 return 1;
101 if (test__fixxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
102 return 1;
103
104 if (test__fixxfdi(-0x1.0000000000000000p+63L, 0x8000000000000000LL))
105 return 1;
106 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0x8000000000000001LL))
107 return 1;
108 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0x8000000000000002LL))
109 return 1;
110
111 #endif
112 return 0;
113 }
114