1*b9829059Sjoerg //===-- fixunsdfsi_test.c - Test __fixunsdfsi -----------------------------===//
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 __fixunsdfsi 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 // Returns: convert a to a unsigned int, rounding toward zero.
18*b9829059Sjoerg // Negative values all become zero.
19*b9829059Sjoerg
20*b9829059Sjoerg // Assumption: double is a IEEE 64 bit floating point type
21*b9829059Sjoerg // su_int is a 32 bit integral type
22*b9829059Sjoerg // value in double is representable in su_int or is negative
23*b9829059Sjoerg // (no range checking performed)
24*b9829059Sjoerg
25*b9829059Sjoerg // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
26*b9829059Sjoerg
27*b9829059Sjoerg su_int __fixunsdfsi(double a);
28*b9829059Sjoerg
test__fixunsdfsi(double a,su_int expected)29*b9829059Sjoerg int test__fixunsdfsi(double a, su_int expected)
30*b9829059Sjoerg {
31*b9829059Sjoerg su_int x = __fixunsdfsi(a);
32*b9829059Sjoerg if (x != expected)
33*b9829059Sjoerg printf("error in __fixunsdfsi(%A) = %X, expected %X\n", a, x, expected);
34*b9829059Sjoerg return x != expected;
35*b9829059Sjoerg }
36*b9829059Sjoerg
37*b9829059Sjoerg char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
38*b9829059Sjoerg char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
39*b9829059Sjoerg
main()40*b9829059Sjoerg int main()
41*b9829059Sjoerg {
42*b9829059Sjoerg if (test__fixunsdfsi(0.0, 0))
43*b9829059Sjoerg return 1;
44*b9829059Sjoerg
45*b9829059Sjoerg if (test__fixunsdfsi(0.5, 0))
46*b9829059Sjoerg return 1;
47*b9829059Sjoerg if (test__fixunsdfsi(0.99, 0))
48*b9829059Sjoerg return 1;
49*b9829059Sjoerg if (test__fixunsdfsi(1.0, 1))
50*b9829059Sjoerg return 1;
51*b9829059Sjoerg if (test__fixunsdfsi(1.5, 1))
52*b9829059Sjoerg return 1;
53*b9829059Sjoerg if (test__fixunsdfsi(1.99, 1))
54*b9829059Sjoerg return 1;
55*b9829059Sjoerg if (test__fixunsdfsi(2.0, 2))
56*b9829059Sjoerg return 1;
57*b9829059Sjoerg if (test__fixunsdfsi(2.01, 2))
58*b9829059Sjoerg return 1;
59*b9829059Sjoerg if (test__fixunsdfsi(-0.5, 0))
60*b9829059Sjoerg return 1;
61*b9829059Sjoerg if (test__fixunsdfsi(-0.99, 0))
62*b9829059Sjoerg return 1;
63*b9829059Sjoerg #if !TARGET_LIBGCC
64*b9829059Sjoerg if (test__fixunsdfsi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec
65*b9829059Sjoerg return 1;
66*b9829059Sjoerg if (test__fixunsdfsi(-1.5, 0))
67*b9829059Sjoerg return 1;
68*b9829059Sjoerg if (test__fixunsdfsi(-1.99, 0))
69*b9829059Sjoerg return 1;
70*b9829059Sjoerg if (test__fixunsdfsi(-2.0, 0))
71*b9829059Sjoerg return 1;
72*b9829059Sjoerg if (test__fixunsdfsi(-2.01, 0))
73*b9829059Sjoerg return 1;
74*b9829059Sjoerg #endif
75*b9829059Sjoerg
76*b9829059Sjoerg if (test__fixunsdfsi(0x1.000000p+31, 0x80000000))
77*b9829059Sjoerg return 1;
78*b9829059Sjoerg if (test__fixunsdfsi(0x1.FFFFFEp+31, 0xFFFFFF00))
79*b9829059Sjoerg return 1;
80*b9829059Sjoerg if (test__fixunsdfsi(0x1.FFFFFEp+30, 0x7FFFFF80))
81*b9829059Sjoerg return 1;
82*b9829059Sjoerg if (test__fixunsdfsi(0x1.FFFFFCp+30, 0x7FFFFF00))
83*b9829059Sjoerg return 1;
84*b9829059Sjoerg
85*b9829059Sjoerg #if !TARGET_LIBGCC
86*b9829059Sjoerg if (test__fixunsdfsi(-0x1.FFFFFEp+30, 0))
87*b9829059Sjoerg return 1;
88*b9829059Sjoerg if (test__fixunsdfsi(-0x1.FFFFFCp+30, 0))
89*b9829059Sjoerg return 1;
90*b9829059Sjoerg #endif
91*b9829059Sjoerg
92*b9829059Sjoerg if (test__fixunsdfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF))
93*b9829059Sjoerg return 1;
94*b9829059Sjoerg if (test__fixunsdfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF))
95*b9829059Sjoerg return 1;
96*b9829059Sjoerg if (test__fixunsdfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE))
97*b9829059Sjoerg return 1;
98*b9829059Sjoerg
99*b9829059Sjoerg return 0;
100*b9829059Sjoerg }
101