1 // Copyright (C) 2009-2019 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 // { dg-options "-Wno-pedantic" }
20 
21 // ISO/IEC TR 24733  3.2.5  Initialization from coefficient and exponent.
22 
23 #include <decimal/decimal>
24 #include <cstring>
25 #include <testsuite_hooks.h>
26 
27 #define PASTE2(A,B) A ## B
28 #define PASTE(A,B) PASTE2(A,B)
29 
30 #define TESTVAL_NEG(COEFF,ESIGN,EXP,SUF,NUM,SIZE)			\
31   x = PASTE(PASTE(PASTE(PASTE(PASTE(COEFF,.),E),ESIGN),EXP),SUF);	\
32   sll = PASTE(COEFF,LL);						\
33   i = ESIGN EXP;							\
34   a = PASTE(make_decimal,32) (sll, i);					\
35   b = PASTE(make_decimal,32) (PASTE(COEFF,LL), ESIGN EXP);	\
36   VERIFY ((std::memcmp ((void *)&x, (void *)&a, SIZE) == 0)	\
37           && (std::memcmp ((void *)&x, (void *)&b,SIZE) == 0));
38 
39 #define TESTVAL_NONNEG(COEFF,ESIGN,EXP,SUF,NUM,SIZE)			\
40   x = PASTE(PASTE(PASTE(PASTE(PASTE(COEFF,.),E),ESIGN),EXP),SUF);	\
41   sll = PASTE(COEFF,LL);						\
42   ull = PASTE(COEFF,ULL);						\
43   i = ESIGN EXP;							\
44   a = PASTE(make_decimal,32) (sll, i);					\
45   b = PASTE(make_decimal,32) (PASTE(COEFF,LL), ESIGN EXP);		\
46   c = PASTE(make_decimal,32) (ull, i);					\
47   d = PASTE(make_decimal,32) (PASTE(COEFF,ULL), ESIGN EXP);		\
48   VERIFY ((std::memcmp ((void *)&x, (void *)&a, SIZE) == 0)	\
49           && (std::memcmp ((void *)&x, (void *)&b,SIZE) == 0)	\
50           && (std::memcmp ((void *)&x, (void *)&c,SIZE) == 0)	\
51           && (std::memcmp ((void *)&x, (void *)&d,SIZE) == 0));
52 
53 using namespace std::decimal;
54 
55 void
make_decimal_32(void)56 make_decimal_32 (void)
57 {
58   decimal32 a, b, c, d;
59   float x __attribute__((mode(SD)));
60   int i;
61   unsigned long sz = sizeof (decimal32);
62   volatile long long sll;
63   volatile unsigned long long ull;
64 
65   TESTVAL_NONNEG (0, +, 0, DF, 32, sz);
66   TESTVAL_NONNEG (5, +, 1, DF, 32, sz);
67   TESTVAL_NONNEG (50, +, 0, DF, 32, sz);
68   TESTVAL_NONNEG (500, +, 0, DF, 32, sz);
69   TESTVAL_NEG (-25, -, 3, DF, 32, sz)
70   TESTVAL_NEG (-500, +, 0, DF, 32, sz);
71   TESTVAL_NONNEG (999999, +, 91, DF, 32, sz);
72   TESTVAL_NONNEG (1, -, 9, DF, 32, sz);
73   TESTVAL_NONNEG (1, -, 90, DF, 32, sz);
74   TESTVAL_NONNEG (1, -, 95, DF, 32, sz);
75   TESTVAL_NONNEG (1, -, 101, DF, 32, sz);
76   TESTVAL_NEG (-1, -, 101, DF, 32, sz);
77 }
78 
79 void
make_decimal_64(void)80 make_decimal_64 (void)
81 {
82   decimal64 a, b, c, d;
83   float x __attribute__((mode(DD)));
84   int i;
85   unsigned long sz = sizeof (decimal64);
86   volatile long long sll;
87   volatile unsigned long long ull;
88 
89   TESTVAL_NONNEG (0, +, 0, DF, 64, sz);
90   TESTVAL_NONNEG (5, +, 1, DF, 64, sz);
91   TESTVAL_NONNEG (50, +, 0, DF, 64, sz);
92   TESTVAL_NONNEG (500, +, 0, DF, 64, sz);
93   TESTVAL_NEG (-25, -, 3, DF, 64, sz)
94   TESTVAL_NEG (-500, +, 0, DF, 64, sz);
95   TESTVAL_NONNEG (999999, +, 91, DF, 64, sz);
96   TESTVAL_NONNEG (1, -, 9, DF, 64, sz);
97   TESTVAL_NONNEG (1, -, 90, DF, 64, sz);
98   TESTVAL_NONNEG (1, -, 95, DF, 64, sz);
99   TESTVAL_NONNEG (1, -, 101, DF, 64, sz);
100   TESTVAL_NEG (-1, -, 101, DF, 64, sz);
101 }
102 
103 void
make_decimal_128(void)104 make_decimal_128 (void)
105 {
106   decimal128 a, b, c, d;
107   float x __attribute__((mode(TD)));
108   int i;
109   unsigned long sz = sizeof (decimal128);
110   volatile long long sll;
111   volatile unsigned long long ull;
112 
113   TESTVAL_NONNEG (0, +, 0, DF, 128, sz);
114   TESTVAL_NONNEG (5, +, 1, DF, 128, sz);
115   TESTVAL_NONNEG (50, +, 0, DF, 128, sz);
116   TESTVAL_NONNEG (500, +, 0, DF, 128, sz);
117   TESTVAL_NEG (-25, -, 3, DF, 128, sz)
118   TESTVAL_NEG (-500, +, 0, DF, 128, sz);
119   TESTVAL_NONNEG (999999, +, 91, DF, 128, sz);
120   TESTVAL_NONNEG (1, -, 9, DF, 128, sz);
121   TESTVAL_NONNEG (1, -, 90, DF, 128, sz);
122   TESTVAL_NONNEG (1, -, 95, DF, 128, sz);
123   TESTVAL_NONNEG (1, -, 101, DF, 128, sz);
124   TESTVAL_NEG (-1, -, 101, DF, 128, sz);
125 }
126 
127 int
main()128 main ()
129 {
130   make_decimal_32 ();
131   make_decimal_64 ();
132   make_decimal_128 ();
133 }
134