1*4684ddb6SLionel Sambuc //===-- fixdfdi_test.c - Test __fixdfdi -----------------------------------===//
2*4684ddb6SLionel Sambuc //
3*4684ddb6SLionel Sambuc // The LLVM Compiler Infrastructure
4*4684ddb6SLionel Sambuc //
5*4684ddb6SLionel Sambuc // This file is dual licensed under the MIT and the University of Illinois Open
6*4684ddb6SLionel Sambuc // Source Licenses. See LICENSE.TXT for details.
7*4684ddb6SLionel Sambuc //
8*4684ddb6SLionel Sambuc //===----------------------------------------------------------------------===//
9*4684ddb6SLionel Sambuc //
10*4684ddb6SLionel Sambuc // This file tests __fixdfdi for the compiler_rt library.
11*4684ddb6SLionel Sambuc //
12*4684ddb6SLionel Sambuc //===----------------------------------------------------------------------===//
13*4684ddb6SLionel Sambuc
14*4684ddb6SLionel Sambuc #include "int_lib.h"
15*4684ddb6SLionel Sambuc #include <stdio.h>
16*4684ddb6SLionel Sambuc
17*4684ddb6SLionel Sambuc // Returns: convert a to a signed long long, rounding toward zero.
18*4684ddb6SLionel Sambuc
19*4684ddb6SLionel Sambuc // Assumption: double is a IEEE 64 bit floating point type
20*4684ddb6SLionel Sambuc // su_int is a 32 bit integral type
21*4684ddb6SLionel Sambuc // value in double is representable in di_int (no range checking performed)
22*4684ddb6SLionel Sambuc
23*4684ddb6SLionel Sambuc // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
24*4684ddb6SLionel Sambuc
25*4684ddb6SLionel Sambuc di_int __fixdfdi(double a);
26*4684ddb6SLionel Sambuc
test__fixdfdi(double a,di_int expected)27*4684ddb6SLionel Sambuc int test__fixdfdi(double a, di_int expected)
28*4684ddb6SLionel Sambuc {
29*4684ddb6SLionel Sambuc di_int x = __fixdfdi(a);
30*4684ddb6SLionel Sambuc if (x != expected)
31*4684ddb6SLionel Sambuc printf("error in __fixdfdi(%A) = %llX, expected %llX\n", a, x, expected);
32*4684ddb6SLionel Sambuc return x != expected;
33*4684ddb6SLionel Sambuc }
34*4684ddb6SLionel Sambuc
35*4684ddb6SLionel Sambuc char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
36*4684ddb6SLionel Sambuc char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
37*4684ddb6SLionel Sambuc char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
38*4684ddb6SLionel Sambuc
main()39*4684ddb6SLionel Sambuc int main()
40*4684ddb6SLionel Sambuc {
41*4684ddb6SLionel Sambuc if (test__fixdfdi(0.0, 0))
42*4684ddb6SLionel Sambuc return 1;
43*4684ddb6SLionel Sambuc
44*4684ddb6SLionel Sambuc if (test__fixdfdi(0.5, 0))
45*4684ddb6SLionel Sambuc return 1;
46*4684ddb6SLionel Sambuc if (test__fixdfdi(0.99, 0))
47*4684ddb6SLionel Sambuc return 1;
48*4684ddb6SLionel Sambuc if (test__fixdfdi(1.0, 1))
49*4684ddb6SLionel Sambuc return 1;
50*4684ddb6SLionel Sambuc if (test__fixdfdi(1.5, 1))
51*4684ddb6SLionel Sambuc return 1;
52*4684ddb6SLionel Sambuc if (test__fixdfdi(1.99, 1))
53*4684ddb6SLionel Sambuc return 1;
54*4684ddb6SLionel Sambuc if (test__fixdfdi(2.0, 2))
55*4684ddb6SLionel Sambuc return 1;
56*4684ddb6SLionel Sambuc if (test__fixdfdi(2.01, 2))
57*4684ddb6SLionel Sambuc return 1;
58*4684ddb6SLionel Sambuc if (test__fixdfdi(-0.5, 0))
59*4684ddb6SLionel Sambuc return 1;
60*4684ddb6SLionel Sambuc if (test__fixdfdi(-0.99, 0))
61*4684ddb6SLionel Sambuc return 1;
62*4684ddb6SLionel Sambuc if (test__fixdfdi(-1.0, -1))
63*4684ddb6SLionel Sambuc return 1;
64*4684ddb6SLionel Sambuc if (test__fixdfdi(-1.5, -1))
65*4684ddb6SLionel Sambuc return 1;
66*4684ddb6SLionel Sambuc if (test__fixdfdi(-1.99, -1))
67*4684ddb6SLionel Sambuc return 1;
68*4684ddb6SLionel Sambuc if (test__fixdfdi(-2.0, -2))
69*4684ddb6SLionel Sambuc return 1;
70*4684ddb6SLionel Sambuc if (test__fixdfdi(-2.01, -2))
71*4684ddb6SLionel Sambuc return 1;
72*4684ddb6SLionel Sambuc
73*4684ddb6SLionel Sambuc if (test__fixdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
74*4684ddb6SLionel Sambuc return 1;
75*4684ddb6SLionel Sambuc if (test__fixdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
76*4684ddb6SLionel Sambuc return 1;
77*4684ddb6SLionel Sambuc
78*4684ddb6SLionel Sambuc if (test__fixdfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL))
79*4684ddb6SLionel Sambuc return 1;
80*4684ddb6SLionel Sambuc if (test__fixdfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL))
81*4684ddb6SLionel Sambuc return 1;
82*4684ddb6SLionel Sambuc
83*4684ddb6SLionel Sambuc if (test__fixdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
84*4684ddb6SLionel Sambuc return 1;
85*4684ddb6SLionel Sambuc if (test__fixdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
86*4684ddb6SLionel Sambuc return 1;
87*4684ddb6SLionel Sambuc
88*4684ddb6SLionel Sambuc if (test__fixdfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL))
89*4684ddb6SLionel Sambuc return 1;
90*4684ddb6SLionel Sambuc if (test__fixdfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL))
91*4684ddb6SLionel Sambuc return 1;
92*4684ddb6SLionel Sambuc
93*4684ddb6SLionel Sambuc return 0;
94*4684ddb6SLionel Sambuc }
95