1*4684ddb6SLionel Sambuc //===-- fixunsdfdi_test.c - Test __fixunsdfdi -----------------------------===//
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 __fixunsdfdi 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 unsigned long long, rounding toward zero.
18*4684ddb6SLionel Sambuc // Negative values all become zero.
19*4684ddb6SLionel Sambuc
20*4684ddb6SLionel Sambuc // Assumption: double is a IEEE 64 bit floating point type
21*4684ddb6SLionel Sambuc // du_int is a 64 bit integral type
22*4684ddb6SLionel Sambuc // value in double is representable in du_int or is negative
23*4684ddb6SLionel Sambuc // (no range checking performed)
24*4684ddb6SLionel Sambuc
25*4684ddb6SLionel Sambuc // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
26*4684ddb6SLionel Sambuc
27*4684ddb6SLionel Sambuc du_int __fixunsdfdi(double a);
28*4684ddb6SLionel Sambuc
test__fixunsdfdi(double a,du_int expected)29*4684ddb6SLionel Sambuc int test__fixunsdfdi(double a, du_int expected)
30*4684ddb6SLionel Sambuc {
31*4684ddb6SLionel Sambuc du_int x = __fixunsdfdi(a);
32*4684ddb6SLionel Sambuc if (x != expected)
33*4684ddb6SLionel Sambuc printf("error in __fixunsdfdi(%A) = %llX, expected %llX\n", a, x, expected);
34*4684ddb6SLionel Sambuc return x != expected;
35*4684ddb6SLionel Sambuc }
36*4684ddb6SLionel Sambuc
37*4684ddb6SLionel Sambuc char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};
38*4684ddb6SLionel Sambuc char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
39*4684ddb6SLionel Sambuc char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
40*4684ddb6SLionel Sambuc
main()41*4684ddb6SLionel Sambuc int main()
42*4684ddb6SLionel Sambuc {
43*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0.0, 0))
44*4684ddb6SLionel Sambuc return 1;
45*4684ddb6SLionel Sambuc
46*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0.5, 0))
47*4684ddb6SLionel Sambuc return 1;
48*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0.99, 0))
49*4684ddb6SLionel Sambuc return 1;
50*4684ddb6SLionel Sambuc if (test__fixunsdfdi(1.0, 1))
51*4684ddb6SLionel Sambuc return 1;
52*4684ddb6SLionel Sambuc if (test__fixunsdfdi(1.5, 1))
53*4684ddb6SLionel Sambuc return 1;
54*4684ddb6SLionel Sambuc if (test__fixunsdfdi(1.99, 1))
55*4684ddb6SLionel Sambuc return 1;
56*4684ddb6SLionel Sambuc if (test__fixunsdfdi(2.0, 2))
57*4684ddb6SLionel Sambuc return 1;
58*4684ddb6SLionel Sambuc if (test__fixunsdfdi(2.01, 2))
59*4684ddb6SLionel Sambuc return 1;
60*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-0.5, 0))
61*4684ddb6SLionel Sambuc return 1;
62*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-0.99, 0))
63*4684ddb6SLionel Sambuc return 1;
64*4684ddb6SLionel Sambuc #if !TARGET_LIBGCC
65*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec
66*4684ddb6SLionel Sambuc return 1;
67*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-1.5, 0))
68*4684ddb6SLionel Sambuc return 1;
69*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-1.99, 0))
70*4684ddb6SLionel Sambuc return 1;
71*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-2.0, 0))
72*4684ddb6SLionel Sambuc return 1;
73*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-2.01, 0))
74*4684ddb6SLionel Sambuc return 1;
75*4684ddb6SLionel Sambuc #endif
76*4684ddb6SLionel Sambuc
77*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
78*4684ddb6SLionel Sambuc return 1;
79*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
80*4684ddb6SLionel Sambuc return 1;
81*4684ddb6SLionel Sambuc
82*4684ddb6SLionel Sambuc #if !TARGET_LIBGCC
83*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-0x1.FFFFFEp+62, 0))
84*4684ddb6SLionel Sambuc return 1;
85*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-0x1.FFFFFCp+62, 0))
86*4684ddb6SLionel Sambuc return 1;
87*4684ddb6SLionel Sambuc #endif
88*4684ddb6SLionel Sambuc
89*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800LL))
90*4684ddb6SLionel Sambuc return 1;
91*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0x1.0000000000000p+63, 0x8000000000000000LL))
92*4684ddb6SLionel Sambuc return 1;
93*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
94*4684ddb6SLionel Sambuc return 1;
95*4684ddb6SLionel Sambuc if (test__fixunsdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
96*4684ddb6SLionel Sambuc return 1;
97*4684ddb6SLionel Sambuc
98*4684ddb6SLionel Sambuc #if !TARGET_LIBGCC
99*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
100*4684ddb6SLionel Sambuc return 1;
101*4684ddb6SLionel Sambuc if (test__fixunsdfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
102*4684ddb6SLionel Sambuc return 1;
103*4684ddb6SLionel Sambuc #endif
104*4684ddb6SLionel Sambuc
105*4684ddb6SLionel Sambuc return 0;
106*4684ddb6SLionel Sambuc }
107