1 // <decimal> -*- C++ -*-
3 // Copyright (C) 2009 Free Software Foundation, Inc.
4 // This file is part of the GNU ISO C++ Library. This library is free
5 // software; you can redistribute it and/or modify it under the
6 // terms of the GNU General Public License as published by the
7 // Free Software Foundation; either version 3, or (at your option)
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // Under Section 7 of GPL version 3, you are granted additional
16 // permissions described in the GCC Runtime Library Exception, version
17 // 3.1, as published by the Free Software Foundation.
19 // You should have received a copy of the GNU General Public License and
20 // a copy of the GCC Runtime Library Exception along with this program;
21 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
22 // <http://www.gnu.org/licenses/>.
24 /** @file include/decimal/decimal
25 * This is a Standard C++ Library header.
29 // Written by Janis Johnson <janis187@us.ibm.com>
31 #ifndef _GLIBCXX_DECIMAL
32 #define _GLIBCXX_DECIMAL 1
34 #pragma GCC system_header
36 #include <bits/c++config.h>
38 #ifndef _GLIBCXX_USE_DECIMAL_FLOAT
39 #error This file requires compiler and library support for ISO/IEC TR 24733 \
40 that is currently not available.
46 * @defgroup decimal Decimal Floating-Point Arithmetic
49 * Classes and functions for decimal floating-point arithmetic.
53 /** @namespace std::decimal
54 * @brief ISO/IEC TR 24733 Decimal floating-point arithmetic.
62 // 3.2.5 Initialization from coefficient and exponent.
63 static decimal32 make_decimal32(long long __coeff, int __exp);
64 static decimal32 make_decimal32(unsigned long long __coeff, int __exp);
65 static decimal64 make_decimal64(long long __coeff, int __exp);
66 static decimal64 make_decimal64(unsigned long long __coeff, int __exp);
67 static decimal128 make_decimal128(long long __coeff, int __exp);
68 static decimal128 make_decimal128(unsigned long long __coeff, int __exp);
70 /// Non-conforming extension: Conversion to integral type.
71 long long decimal32_to_long_long(decimal32 __d);
72 long long decimal64_to_long_long(decimal64 __d);
73 long long decimal128_to_long_long(decimal128 __d);
74 long long decimal_to_long_long(decimal32 __d);
75 long long decimal_to_long_long(decimal64 __d);
76 long long decimal_to_long_long(decimal128 __d);
78 // 3.2.6 Conversion to generic floating-point type.
79 float decimal32_to_float(decimal32 __d);
80 float decimal64_to_float(decimal64 __d);
81 float decimal128_to_float(decimal128 __d);
82 float decimal_to_float(decimal32 __d);
83 float decimal_to_float(decimal64 __d);
84 float decimal_to_float(decimal128 __d);
86 double decimal32_to_double(decimal32 __d);
87 double decimal64_to_double(decimal64 __d);
88 double decimal128_to_double(decimal128 __d);
89 double decimal_to_double(decimal32 __d);
90 double decimal_to_double(decimal64 __d);
91 double decimal_to_double(decimal128 __d);
93 long double decimal32_to_long_double(decimal32 __d);
94 long double decimal64_to_long_double(decimal64 __d);
95 long double decimal128_to_long_double(decimal128 __d);
96 long double decimal_to_long_double(decimal32 __d);
97 long double decimal_to_long_double(decimal64 __d);
98 long double decimal_to_long_double(decimal128 __d);
100 // 3.2.7 Unary arithmetic operators.
101 decimal32 operator+(decimal32 __rhs);
102 decimal64 operator+(decimal64 __rhs);
103 decimal128 operator+(decimal128 __rhs);
104 decimal32 operator-(decimal32 __rhs);
105 decimal64 operator-(decimal64 __rhs);
106 decimal128 operator-(decimal128 __rhs);
108 // 3.2.8 Binary arithmetic operators.
109 #define _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(_Op, _T1, _T2, _T3) \
110 _T1 operator _Op(_T2 __lhs, _T3 __rhs);
111 #define _DECLARE_DECIMAL_BINARY_OP_WITH_INT(_Op, _Tp) \
112 _Tp operator _Op(_Tp __lhs, int __rhs); \
113 _Tp operator _Op(_Tp __lhs, unsigned int __rhs); \
114 _Tp operator _Op(_Tp __lhs, long __rhs); \
115 _Tp operator _Op(_Tp __lhs, unsigned long __rhs); \
116 _Tp operator _Op(_Tp __lhs, long long __rhs); \
117 _Tp operator _Op(_Tp __lhs, unsigned long long __rhs); \
118 _Tp operator _Op(int __lhs, _Tp __rhs); \
119 _Tp operator _Op(unsigned int __lhs, _Tp __rhs); \
120 _Tp operator _Op(long __lhs, _Tp __rhs); \
121 _Tp operator _Op(unsigned long __lhs, _Tp __rhs); \
122 _Tp operator _Op(long long __lhs, _Tp __rhs); \
123 _Tp operator _Op(unsigned long long __lhs, _Tp __rhs);
125 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal32, decimal32, decimal32)
126 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(+, decimal32)
127 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal64, decimal32, decimal64)
128 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal64, decimal64, decimal32)
129 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal64, decimal64, decimal64)
130 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(+, decimal64)
131 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal32, decimal128)
132 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal64, decimal128)
133 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal128, decimal32)
134 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal128, decimal64)
135 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal128, decimal128)
136 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(+, decimal128)
138 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal32, decimal32, decimal32)
139 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(-, decimal32)
140 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal64, decimal32, decimal64)
141 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal64, decimal64, decimal32)
142 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal64, decimal64, decimal64)
143 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(-, decimal64)
144 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal32, decimal128)
145 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal64, decimal128)
146 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal128, decimal32)
147 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal128, decimal64)
148 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal128, decimal128)
149 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(-, decimal128)
151 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal32, decimal32, decimal32)
152 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(*, decimal32)
153 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal64, decimal32, decimal64)
154 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal64, decimal64, decimal32)
155 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal64, decimal64, decimal64)
156 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(*, decimal64)
157 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal32, decimal128)
158 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal64, decimal128)
159 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal128, decimal32)
160 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal128, decimal64)
161 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal128, decimal128)
162 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(*, decimal128)
164 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal32, decimal32, decimal32)
165 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(/, decimal32)
166 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal64, decimal32, decimal64)
167 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal64, decimal64, decimal32)
168 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal64, decimal64, decimal64)
169 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(/, decimal64)
170 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal32, decimal128)
171 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal64, decimal128)
172 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal128, decimal32)
173 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal128, decimal64)
174 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal128, decimal128)
175 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(/, decimal128)
177 #undef _DECLARE_DECIMAL_BINARY_OP_WITH_DEC
178 #undef _DECLARE_DECIMAL_BINARY_OP_WITH_INT
180 // 3.2.9 Comparison operators.
181 #define _DECLARE_DECIMAL_COMPARISON(_Op, _Tp) \
182 bool operator _Op(_Tp __lhs, decimal32 __rhs); \
183 bool operator _Op(_Tp __lhs, decimal64 __rhs); \
184 bool operator _Op(_Tp __lhs, decimal128 __rhs); \
185 bool operator _Op(_Tp __lhs, int __rhs); \
186 bool operator _Op(_Tp __lhs, unsigned int __rhs); \
187 bool operator _Op(_Tp __lhs, long __rhs); \
188 bool operator _Op(_Tp __lhs, unsigned long __rhs); \
189 bool operator _Op(_Tp __lhs, long long __rhs); \
190 bool operator _Op(_Tp __lhs, unsigned long long __rhs); \
191 bool operator _Op(int __lhs, _Tp __rhs); \
192 bool operator _Op(unsigned int __lhs, _Tp __rhs); \
193 bool operator _Op(long __lhs, _Tp __rhs); \
194 bool operator _Op(unsigned long __lhs, _Tp __rhs); \
195 bool operator _Op(long long __lhs, _Tp __rhs); \
196 bool operator _Op(unsigned long long __lhs, _Tp __rhs);
198 _DECLARE_DECIMAL_COMPARISON(==, decimal32)
199 _DECLARE_DECIMAL_COMPARISON(==, decimal64)
200 _DECLARE_DECIMAL_COMPARISON(==, decimal128)
202 _DECLARE_DECIMAL_COMPARISON(!=, decimal32)
203 _DECLARE_DECIMAL_COMPARISON(!=, decimal64)
204 _DECLARE_DECIMAL_COMPARISON(!=, decimal128)
206 _DECLARE_DECIMAL_COMPARISON(<, decimal32)
207 _DECLARE_DECIMAL_COMPARISON(<, decimal64)
208 _DECLARE_DECIMAL_COMPARISON(<, decimal128)
210 _DECLARE_DECIMAL_COMPARISON(>=, decimal32)
211 _DECLARE_DECIMAL_COMPARISON(>=, decimal64)
212 _DECLARE_DECIMAL_COMPARISON(>=, decimal128)
214 _DECLARE_DECIMAL_COMPARISON(>, decimal32)
215 _DECLARE_DECIMAL_COMPARISON(>, decimal64)
216 _DECLARE_DECIMAL_COMPARISON(>, decimal128)
218 _DECLARE_DECIMAL_COMPARISON(>=, decimal32)
219 _DECLARE_DECIMAL_COMPARISON(>=, decimal64)
220 _DECLARE_DECIMAL_COMPARISON(>=, decimal128)
222 #undef _DECLARE_DECIMAL_COMPARISON
224 /// 3.2.2 Class decimal32.
228 typedef float __decfloat32 __attribute__((mode(SD)));
230 // 3.2.2.2 Construct/copy/destroy.
231 decimal32() : __val(0.e-101DF) {}
233 // 3.2.2.3 Conversion from floating-point type.
234 explicit decimal32(decimal64 __d64);
235 explicit decimal32(decimal128 __d128);
236 explicit decimal32(float __r) : __val(__r) {}
237 explicit decimal32(double __r) : __val(__r) {}
238 explicit decimal32(long double __r) : __val(__r) {}
240 // 3.2.2.4 Conversion from integral type.
241 decimal32(int __z) : __val(__z) {}
242 decimal32(unsigned int __z) : __val(__z) {}
243 decimal32(long __z) : __val(__z) {}
244 decimal32(unsigned long __z) : __val(__z) {}
245 decimal32(long long __z) : __val(__z) {}
246 decimal32(unsigned long long __z) : __val(__z) {}
248 /// Conforming extension: Conversion from scalar decimal type.
249 decimal32(__decfloat32 __z) : __val(__z) {}
251 // 3.2.2.5 Conversion to integral type. (DISABLED)
252 //operator long long() const { return (long long)__val; }
254 // 3.2.2.6 Increment and decrement operators.
255 decimal32& operator++()
261 decimal32 operator++(int)
263 decimal32 __tmp = *this;
268 decimal32& operator--()
274 decimal32 operator--(int)
276 decimal32 __tmp = *this;
281 // 3.2.2.7 Compound assignment.
282 #define _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(_Op) \
283 decimal32& operator _Op(decimal32 __rhs); \
284 decimal32& operator _Op(decimal64 __rhs); \
285 decimal32& operator _Op(decimal128 __rhs); \
286 decimal32& operator _Op(int __rhs); \
287 decimal32& operator _Op(unsigned int __rhs); \
288 decimal32& operator _Op(long __rhs); \
289 decimal32& operator _Op(unsigned long __rhs); \
290 decimal32& operator _Op(long long __rhs); \
291 decimal32& operator _Op(unsigned long long __rhs);
293 _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(+=)
294 _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(-=)
295 _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(*=)
296 _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(/=)
297 #undef _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT
303 __decfloat32 __getval(void) { return __val; }
304 void __setval(__decfloat32 __x) { __val = __x; }
307 /// 3.2.3 Class decimal64.
311 typedef float __decfloat64 __attribute__((mode(DD)));
313 // 3.2.3.2 Construct/copy/destroy.
314 decimal64() : __val(0.e-398dd) {}
316 // 3.2.3.3 Conversion from floating-point type.
317 decimal64(decimal32 d32);
318 explicit decimal64(decimal128 d128);
319 explicit decimal64(float __r) : __val(__r) {}
320 explicit decimal64(double __r) : __val(__r) {}
321 explicit decimal64(long double __r) : __val(__r) {}
323 // 3.2.3.4 Conversion from integral type.
324 decimal64(int __z) : __val(__z) {}
325 decimal64(unsigned int __z) : __val(__z) {}
326 decimal64(long __z) : __val(__z) {}
327 decimal64(unsigned long __z) : __val(__z) {}
328 decimal64(long long __z) : __val(__z) {}
329 decimal64(unsigned long long __z) : __val(__z) {}
331 /// Conforming extension: Conversion from scalar decimal type.
332 decimal64(__decfloat64 __z) : __val(__z) {}
334 // 3.2.3.5 Conversion to integral type. (DISABLED)
335 //operator long long() const { return (long long)__val; }
337 // 3.2.3.6 Increment and decrement operators.
338 decimal64& operator++()
344 decimal64 operator++(int)
346 decimal64 __tmp = *this;
351 decimal64& operator--()
357 decimal64 operator--(int)
359 decimal64 __tmp = *this;
364 // 3.2.3.7 Compound assignment.
365 #define _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(_Op) \
366 decimal64& operator _Op(decimal32 __rhs); \
367 decimal64& operator _Op(decimal64 __rhs); \
368 decimal64& operator _Op(decimal128 __rhs); \
369 decimal64& operator _Op(int __rhs); \
370 decimal64& operator _Op(unsigned int __rhs); \
371 decimal64& operator _Op(long __rhs); \
372 decimal64& operator _Op(unsigned long __rhs); \
373 decimal64& operator _Op(long long __rhs); \
374 decimal64& operator _Op(unsigned long long __rhs);
376 _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(+=)
377 _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(-=)
378 _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(*=)
379 _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(/=)
380 #undef _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT
386 __decfloat64 __getval(void) { return __val; }
387 void __setval(__decfloat64 __x) { __val = __x; }
390 /// 3.2.4 Class decimal128.
394 typedef float __decfloat128 __attribute__((mode(TD)));
396 // 3.2.4.2 Construct/copy/destroy.
397 decimal128() : __val(0.e-6176DL) {}
399 // 3.2.4.3 Conversion from floating-point type.
400 decimal128(decimal32 d32);
401 decimal128(decimal64 d64);
402 explicit decimal128(float __r) : __val(__r) {}
403 explicit decimal128(double __r) : __val(__r) {}
404 explicit decimal128(long double __r) : __val(__r) {}
407 // 3.2.4.4 Conversion from integral type.
408 decimal128(int __z) : __val(__z) {}
409 decimal128(unsigned int __z) : __val(__z) {}
410 decimal128(long __z) : __val(__z) {}
411 decimal128(unsigned long __z) : __val(__z) {}
412 decimal128(long long __z) : __val(__z) {}
413 decimal128(unsigned long long __z) : __val(__z) {}
415 /// Conforming extension: Conversion from scalar decimal type.
416 decimal128(__decfloat128 __z) : __val(__z) {}
418 // 3.2.4.5 Conversion to integral type. (DISABLED)
419 //operator long long() const { return (long long)__val; }
421 // 3.2.4.6 Increment and decrement operators.
422 decimal128& operator++()
428 decimal128 operator++(int)
430 decimal128 __tmp = *this;
435 decimal128& operator--()
441 decimal128 operator--(int)
443 decimal128 __tmp = *this;
448 // 3.2.4.7 Compound assignment.
449 #define _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(_Op) \
450 decimal128& operator _Op(decimal32 __rhs); \
451 decimal128& operator _Op(decimal64 __rhs); \
452 decimal128& operator _Op(decimal128 __rhs); \
453 decimal128& operator _Op(int __rhs); \
454 decimal128& operator _Op(unsigned int __rhs); \
455 decimal128& operator _Op(long __rhs); \
456 decimal128& operator _Op(unsigned long __rhs); \
457 decimal128& operator _Op(long long __rhs); \
458 decimal128& operator _Op(unsigned long long __rhs);
460 _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(+=)
461 _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(-=)
462 _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(*=)
463 _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(/=)
464 #undef _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT
470 __decfloat128 __getval(void) { return __val; }
471 void __setval(__decfloat128 __x) { __val = __x; }
474 #define _GLIBCXX_USE_DECIMAL_ 1
476 } // namespace decimal
480 #include <decimal/decimal.h>
482 #endif /* _GLIBCXX_DECIMAL */