conversion-to-generic-float.cc revision 1.1.1.1 
1// Copyright (C) 2009 Free Software Foundation, Inc.
2//
3// This file is part of the GNU ISO C++ Library.  This library is free
4// software; you can redistribute it and/or modify it under the
5// terms of the GNU General Public License as published by the
6// Free Software Foundation; either version 3, or (at your option)
7// any later version.
8
9// This library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License along
15// with this library; see the file COPYING3.  If not see
16// <http://www.gnu.org/licenses/>.
17
18// { dg-require-effective-target dfp }
19
20// ISO/IEC TR 24733  3.2.6  Conversion to generic floating-point type.
21
22#include <decimal/decimal>
23#include <testsuite_hooks.h>
24
25using namespace std::decimal;
26
27void
28conversion_to_generic_float_32 ()
29{
30  std::decimal::decimal32 d32(123);
31  float f;
32  double d;
33  long double ld;
34
35  f = decimal32_to_float (d32);
36  VERIFY (f == 123.F);
37  d = decimal32_to_double (d32);
38  VERIFY (d == 123.);
39  ld = decimal32_to_long_double (d32);
40  VERIFY (ld == 123.L);
41
42  d32++;
43  f = decimal_to_float (d32);
44  VERIFY (f == 124.F);
45  d = decimal_to_double (d32);
46  VERIFY (d == 124.);
47  ld = decimal_to_long_double (d32);
48  VERIFY (ld == 124.L);
49}
50
51void
52conversion_to_generic_float_64 ()
53{
54  std::decimal::decimal64 d64(234);
55  float f;
56  double d;
57  long double ld;
58
59  f = decimal64_to_float (d64);
60  VERIFY (f == 234.F);
61  d = decimal64_to_double (d64);
62  VERIFY (d == 234.);
63  ld = decimal64_to_long_double (d64);
64  VERIFY (ld == 234.L);
65
66  d64++;
67  f = decimal_to_float (d64);
68  VERIFY (f == 235.F);
69  d = decimal_to_double (d64);
70  VERIFY (d == 235.);
71  ld = decimal_to_long_double (d64);
72  VERIFY (ld == 235.L);
73}
74
75void
76conversion_to_generic_float_128 ()
77{
78  std::decimal::decimal128 d128(345);
79  float f;
80  double d;
81  long double ld;
82
83  f = decimal128_to_float (d128);
84  VERIFY (f == 345.F);
85  d = decimal128_to_double (d128);
86  VERIFY (d == 345.);
87  ld = decimal128_to_long_double (d128);
88  VERIFY (ld == 345.L);
89
90  d128++;
91  f = decimal_to_float (d128);
92  VERIFY (f == 346.F);
93  d = decimal_to_double (d128);
94  VERIFY (d == 346.);
95  ld = decimal_to_long_double (d128);
96  VERIFY (ld == 346.L);
97}
98
99int
100main ()
101{
102  conversion_to_generic_float_32 ();
103  conversion_to_generic_float_64 ();
104  conversion_to_generic_float_128 ();
105}
106