1*4684ddb6SLionel Sambuc //===-- fixunssfsi_test.c - Test __fixunssfsi -----------------------------===//
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 __fixunssfsi 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 int, rounding toward zero.
18*4684ddb6SLionel Sambuc // Negative values all become zero.
19*4684ddb6SLionel Sambuc
20*4684ddb6SLionel Sambuc // Assumption: float is a IEEE 32 bit floating point type
21*4684ddb6SLionel Sambuc // su_int is a 32 bit integral type
22*4684ddb6SLionel Sambuc // value in float is representable in su_int or is negative
23*4684ddb6SLionel Sambuc // (no range checking performed)
24*4684ddb6SLionel Sambuc
25*4684ddb6SLionel Sambuc // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
26*4684ddb6SLionel Sambuc
27*4684ddb6SLionel Sambuc su_int __fixunssfsi(float a);
28*4684ddb6SLionel Sambuc
test__fixunssfsi(float a,su_int expected)29*4684ddb6SLionel Sambuc int test__fixunssfsi(float a, su_int expected)
30*4684ddb6SLionel Sambuc {
31*4684ddb6SLionel Sambuc su_int x = __fixunssfsi(a);
32*4684ddb6SLionel Sambuc if (x != expected)
33*4684ddb6SLionel Sambuc printf("error in __fixunssfsi(%A) = %X, expected %X\n", a, x, expected);
34*4684ddb6SLionel Sambuc return x != expected;
35*4684ddb6SLionel Sambuc }
36*4684ddb6SLionel Sambuc
37*4684ddb6SLionel Sambuc char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
38*4684ddb6SLionel Sambuc char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
39*4684ddb6SLionel Sambuc
main()40*4684ddb6SLionel Sambuc int main()
41*4684ddb6SLionel Sambuc {
42*4684ddb6SLionel Sambuc if (test__fixunssfsi(0.0F, 0))
43*4684ddb6SLionel Sambuc return 1;
44*4684ddb6SLionel Sambuc
45*4684ddb6SLionel Sambuc if (test__fixunssfsi(0.5F, 0))
46*4684ddb6SLionel Sambuc return 1;
47*4684ddb6SLionel Sambuc if (test__fixunssfsi(0.99F, 0))
48*4684ddb6SLionel Sambuc return 1;
49*4684ddb6SLionel Sambuc if (test__fixunssfsi(1.0F, 1))
50*4684ddb6SLionel Sambuc return 1;
51*4684ddb6SLionel Sambuc if (test__fixunssfsi(1.5F, 1))
52*4684ddb6SLionel Sambuc return 1;
53*4684ddb6SLionel Sambuc if (test__fixunssfsi(1.99F, 1))
54*4684ddb6SLionel Sambuc return 1;
55*4684ddb6SLionel Sambuc if (test__fixunssfsi(2.0F, 2))
56*4684ddb6SLionel Sambuc return 1;
57*4684ddb6SLionel Sambuc if (test__fixunssfsi(2.01F, 2))
58*4684ddb6SLionel Sambuc return 1;
59*4684ddb6SLionel Sambuc if (test__fixunssfsi(-0.5F, 0))
60*4684ddb6SLionel Sambuc return 1;
61*4684ddb6SLionel Sambuc if (test__fixunssfsi(-0.99F, 0))
62*4684ddb6SLionel Sambuc return 1;
63*4684ddb6SLionel Sambuc #if !TARGET_LIBGCC
64*4684ddb6SLionel Sambuc if (test__fixunssfsi(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
65*4684ddb6SLionel Sambuc return 1;
66*4684ddb6SLionel Sambuc if (test__fixunssfsi(-1.5F, 0))
67*4684ddb6SLionel Sambuc return 1;
68*4684ddb6SLionel Sambuc if (test__fixunssfsi(-1.99F, 0))
69*4684ddb6SLionel Sambuc return 1;
70*4684ddb6SLionel Sambuc if (test__fixunssfsi(-2.0F, 0))
71*4684ddb6SLionel Sambuc return 1;
72*4684ddb6SLionel Sambuc if (test__fixunssfsi(-2.01F, 0))
73*4684ddb6SLionel Sambuc return 1;
74*4684ddb6SLionel Sambuc #endif
75*4684ddb6SLionel Sambuc
76*4684ddb6SLionel Sambuc if (test__fixunssfsi(0x1.000000p+31F, 0x80000000))
77*4684ddb6SLionel Sambuc return 1;
78*4684ddb6SLionel Sambuc if (test__fixunssfsi(0x1.FFFFFEp+31F, 0xFFFFFF00))
79*4684ddb6SLionel Sambuc return 1;
80*4684ddb6SLionel Sambuc if (test__fixunssfsi(0x1.FFFFFEp+30F, 0x7FFFFF80))
81*4684ddb6SLionel Sambuc return 1;
82*4684ddb6SLionel Sambuc if (test__fixunssfsi(0x1.FFFFFCp+30F, 0x7FFFFF00))
83*4684ddb6SLionel Sambuc return 1;
84*4684ddb6SLionel Sambuc
85*4684ddb6SLionel Sambuc #if !TARGET_LIBGCC
86*4684ddb6SLionel Sambuc if (test__fixunssfsi(-0x1.FFFFFEp+30F, 0))
87*4684ddb6SLionel Sambuc return 1;
88*4684ddb6SLionel Sambuc if (test__fixunssfsi(-0x1.FFFFFCp+30F, 0))
89*4684ddb6SLionel Sambuc return 1;
90*4684ddb6SLionel Sambuc #endif
91*4684ddb6SLionel Sambuc
92*4684ddb6SLionel Sambuc return 0;
93*4684ddb6SLionel Sambuc }
94