1*b9829059Sjoerg //===-- fixxfdi_test.c - Test __fixxfdi -----------------------------------===//
2*b9829059Sjoerg //
3*b9829059Sjoerg // The LLVM Compiler Infrastructure
4*b9829059Sjoerg //
5*b9829059Sjoerg // This file is dual licensed under the MIT and the University of Illinois Open
6*b9829059Sjoerg // Source Licenses. See LICENSE.TXT for details.
7*b9829059Sjoerg //
8*b9829059Sjoerg //===----------------------------------------------------------------------===//
9*b9829059Sjoerg //
10*b9829059Sjoerg // This file tests __fixxfdi for the compiler_rt library.
11*b9829059Sjoerg //
12*b9829059Sjoerg //===----------------------------------------------------------------------===//
13*b9829059Sjoerg
14*b9829059Sjoerg #include "int_lib.h"
15*b9829059Sjoerg #include <stdio.h>
16*b9829059Sjoerg
17*b9829059Sjoerg
18*b9829059Sjoerg #if HAS_80_BIT_LONG_DOUBLE
19*b9829059Sjoerg // Returns: convert a to a signed long long, rounding toward zero.
20*b9829059Sjoerg
21*b9829059Sjoerg // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
22*b9829059Sjoerg // su_int is a 32 bit integral type
23*b9829059Sjoerg // value in long double is representable in di_int (no range checking performed)
24*b9829059Sjoerg
25*b9829059Sjoerg // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
26*b9829059Sjoerg // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
27*b9829059Sjoerg
28*b9829059Sjoerg di_int __fixxfdi(long double a);
29*b9829059Sjoerg
test__fixxfdi(long double a,di_int expected)30*b9829059Sjoerg int test__fixxfdi(long double a, di_int expected)
31*b9829059Sjoerg {
32*b9829059Sjoerg di_int x = __fixxfdi(a);
33*b9829059Sjoerg if (x != expected)
34*b9829059Sjoerg printf("error in __fixxfdi(%LA) = %llX, expected %llX\n",
35*b9829059Sjoerg a, x, expected);
36*b9829059Sjoerg return x != expected;
37*b9829059Sjoerg }
38*b9829059Sjoerg
39*b9829059Sjoerg char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
40*b9829059Sjoerg char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
41*b9829059Sjoerg char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
42*b9829059Sjoerg #endif
43*b9829059Sjoerg
main()44*b9829059Sjoerg int main()
45*b9829059Sjoerg {
46*b9829059Sjoerg #if HAS_80_BIT_LONG_DOUBLE
47*b9829059Sjoerg if (test__fixxfdi(0.0, 0))
48*b9829059Sjoerg return 1;
49*b9829059Sjoerg
50*b9829059Sjoerg if (test__fixxfdi(0.5, 0))
51*b9829059Sjoerg return 1;
52*b9829059Sjoerg if (test__fixxfdi(0.99, 0))
53*b9829059Sjoerg return 1;
54*b9829059Sjoerg if (test__fixxfdi(1.0, 1))
55*b9829059Sjoerg return 1;
56*b9829059Sjoerg if (test__fixxfdi(1.5, 1))
57*b9829059Sjoerg return 1;
58*b9829059Sjoerg if (test__fixxfdi(1.99, 1))
59*b9829059Sjoerg return 1;
60*b9829059Sjoerg if (test__fixxfdi(2.0, 2))
61*b9829059Sjoerg return 1;
62*b9829059Sjoerg if (test__fixxfdi(2.01, 2))
63*b9829059Sjoerg return 1;
64*b9829059Sjoerg if (test__fixxfdi(-0.5, 0))
65*b9829059Sjoerg return 1;
66*b9829059Sjoerg if (test__fixxfdi(-0.99, 0))
67*b9829059Sjoerg return 1;
68*b9829059Sjoerg if (test__fixxfdi(-1.0, -1))
69*b9829059Sjoerg return 1;
70*b9829059Sjoerg if (test__fixxfdi(-1.5, -1))
71*b9829059Sjoerg return 1;
72*b9829059Sjoerg if (test__fixxfdi(-1.99, -1))
73*b9829059Sjoerg return 1;
74*b9829059Sjoerg if (test__fixxfdi(-2.0, -2))
75*b9829059Sjoerg return 1;
76*b9829059Sjoerg if (test__fixxfdi(-2.01, -2))
77*b9829059Sjoerg return 1;
78*b9829059Sjoerg
79*b9829059Sjoerg if (test__fixxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
80*b9829059Sjoerg return 1;
81*b9829059Sjoerg if (test__fixxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
82*b9829059Sjoerg return 1;
83*b9829059Sjoerg
84*b9829059Sjoerg if (test__fixxfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL))
85*b9829059Sjoerg return 1;
86*b9829059Sjoerg if (test__fixxfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL))
87*b9829059Sjoerg return 1;
88*b9829059Sjoerg
89*b9829059Sjoerg if (test__fixxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
90*b9829059Sjoerg return 1;
91*b9829059Sjoerg if (test__fixxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
92*b9829059Sjoerg return 1;
93*b9829059Sjoerg
94*b9829059Sjoerg if (test__fixxfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL))
95*b9829059Sjoerg return 1;
96*b9829059Sjoerg if (test__fixxfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL))
97*b9829059Sjoerg return 1;
98*b9829059Sjoerg
99*b9829059Sjoerg if (test__fixxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
100*b9829059Sjoerg return 1;
101*b9829059Sjoerg if (test__fixxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
102*b9829059Sjoerg return 1;
103*b9829059Sjoerg
104*b9829059Sjoerg if (test__fixxfdi(-0x1.0000000000000000p+63L, 0x8000000000000000LL))
105*b9829059Sjoerg return 1;
106*b9829059Sjoerg if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0x8000000000000001LL))
107*b9829059Sjoerg return 1;
108*b9829059Sjoerg if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0x8000000000000002LL))
109*b9829059Sjoerg return 1;
110*b9829059Sjoerg
111*b9829059Sjoerg #else
112*b9829059Sjoerg printf("skipped\n");
113*b9829059Sjoerg #endif
114*b9829059Sjoerg return 0;
115*b9829059Sjoerg }
116