libstdc++: decimal Source File

libstdc++

decimal
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1// <decimal> -*- C++ -*-
2
3// Copyright (C) 2009-2026 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)
8// any later version.
9
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.
14
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.
18
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/>.
23
24/** @file decimal/decimal
25 * This is a Standard C++ Library header.
26 */
27
28// ISO/IEC TR 24733
29// Written by Janis Johnson <janis187@us.ibm.com>
30
31#ifndef _GLIBCXX_DECIMAL
32#define _GLIBCXX_DECIMAL 1
33
34#ifdef _GLIBCXX_SYSHDR
35#pragma GCC system_header
36#endif
37
38#pragma GCC diagnostic push
39#pragma GCC diagnostic ignored "-Wpedantic" // DF suffix
40
41#include <bits/c++config.h>
42
43#ifndef _GLIBCXX_USE_DECIMAL_FLOAT
44#error This file requires compiler and library support for ISO/IEC TR 24733 \
45that is currently not available.
46#endif
47
48namespace std _GLIBCXX_VISIBILITY(default)
49{
50_GLIBCXX_BEGIN_NAMESPACE_VERSION
51
52 /**
53 * @defgroup decimal Decimal Floating-Point Arithmetic
54 * @ingroup numerics
55 *
56 * Classes and functions for decimal floating-point arithmetic.
57 * @{
58 */
59
60 /** @namespace std::decimal
61 * @brief ISO/IEC TR 24733 Decimal floating-point arithmetic.
62 */
63namespace decimal
64{
65 class decimal32;
66 class decimal64;
67 class decimal128;
68
69 // 3.2.5 Initialization from coefficient and exponent.
70 static decimal32 make_decimal32(long long __coeff, int __exp);
71 static decimal32 make_decimal32(unsigned long long __coeff, int __exp);
72 static decimal64 make_decimal64(long long __coeff, int __exp);
73 static decimal64 make_decimal64(unsigned long long __coeff, int __exp);
74 static decimal128 make_decimal128(long long __coeff, int __exp);
75 static decimal128 make_decimal128(unsigned long long __coeff, int __exp);
76
77 /// Non-conforming extension: Conversion to integral type.
78 long long decimal32_to_long_long(decimal32 __d);
79 long long decimal64_to_long_long(decimal64 __d);
80 long long decimal128_to_long_long(decimal128 __d);
81 long long decimal_to_long_long(decimal32 __d);
82 long long decimal_to_long_long(decimal64 __d);
83 long long decimal_to_long_long(decimal128 __d);
84
85 // 3.2.6 Conversion to generic floating-point type.
86 float decimal32_to_float(decimal32 __d);
87 float decimal64_to_float(decimal64 __d);
88 float decimal128_to_float(decimal128 __d);
89 float decimal_to_float(decimal32 __d);
90 float decimal_to_float(decimal64 __d);
91 float decimal_to_float(decimal128 __d);
92
93 double decimal32_to_double(decimal32 __d);
94 double decimal64_to_double(decimal64 __d);
95 double decimal128_to_double(decimal128 __d);
96 double decimal_to_double(decimal32 __d);
97 double decimal_to_double(decimal64 __d);
98 double decimal_to_double(decimal128 __d);
99
100 long double decimal32_to_long_double(decimal32 __d);
101 long double decimal64_to_long_double(decimal64 __d);
102 long double decimal128_to_long_double(decimal128 __d);
103 long double decimal_to_long_double(decimal32 __d);
104 long double decimal_to_long_double(decimal64 __d);
105 long double decimal_to_long_double(decimal128 __d);
106
107 // 3.2.7 Unary arithmetic operators.
108 decimal32 operator+(decimal32 __rhs);
109 decimal64 operator+(decimal64 __rhs);
110 decimal128 operator+(decimal128 __rhs);
111 decimal32 operator-(decimal32 __rhs);
112 decimal64 operator-(decimal64 __rhs);
113 decimal128 operator-(decimal128 __rhs);
114
115 // 3.2.8 Binary arithmetic operators.
116#define _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(_Op, _T1, _T2, _T3) \
117 _T1 operator _Op(_T2 __lhs, _T3 __rhs);
118#define _DECLARE_DECIMAL_BINARY_OP_WITH_INT(_Op, _Tp) \
119 _Tp operator _Op(_Tp __lhs, int __rhs); \
120 _Tp operator _Op(_Tp __lhs, unsigned int __rhs); \
121 _Tp operator _Op(_Tp __lhs, long __rhs); \
122 _Tp operator _Op(_Tp __lhs, unsigned long __rhs); \
123 _Tp operator _Op(_Tp __lhs, long long __rhs); \
124 _Tp operator _Op(_Tp __lhs, unsigned long long __rhs); \
125 _Tp operator _Op(int __lhs, _Tp __rhs); \
126 _Tp operator _Op(unsigned int __lhs, _Tp __rhs); \
127 _Tp operator _Op(long __lhs, _Tp __rhs); \
128 _Tp operator _Op(unsigned long __lhs, _Tp __rhs); \
129 _Tp operator _Op(long long __lhs, _Tp __rhs); \
130 _Tp operator _Op(unsigned long long __lhs, _Tp __rhs);
131
132 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal32, decimal32, decimal32)
133 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(+, decimal32)
134 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal64, decimal32, decimal64)
135 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal64, decimal64, decimal32)
136 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal64, decimal64, decimal64)
137 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(+, decimal64)
138 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal32, decimal128)
139 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal64, decimal128)
140 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal128, decimal32)
141 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal128, decimal64)
142 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(+, decimal128, decimal128, decimal128)
143 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(+, decimal128)
144
145 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal32, decimal32, decimal32)
146 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(-, decimal32)
147 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal64, decimal32, decimal64)
148 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal64, decimal64, decimal32)
149 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal64, decimal64, decimal64)
150 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(-, decimal64)
151 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal32, decimal128)
152 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal64, decimal128)
153 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal128, decimal32)
154 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal128, decimal64)
155 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(-, decimal128, decimal128, decimal128)
156 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(-, decimal128)
157
158 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal32, decimal32, decimal32)
159 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(*, decimal32)
160 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal64, decimal32, decimal64)
161 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal64, decimal64, decimal32)
162 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal64, decimal64, decimal64)
163 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(*, decimal64)
164 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal32, decimal128)
165 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal64, decimal128)
166 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal128, decimal32)
167 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal128, decimal64)
168 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(*, decimal128, decimal128, decimal128)
169 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(*, decimal128)
170
171 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal32, decimal32, decimal32)
172 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(/, decimal32)
173 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal64, decimal32, decimal64)
174 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal64, decimal64, decimal32)
175 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal64, decimal64, decimal64)
176 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(/, decimal64)
177 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal32, decimal128)
178 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal64, decimal128)
179 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal128, decimal32)
180 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal128, decimal64)
181 _DECLARE_DECIMAL_BINARY_OP_WITH_DEC(/, decimal128, decimal128, decimal128)
182 _DECLARE_DECIMAL_BINARY_OP_WITH_INT(/, decimal128)
183
184#undef _DECLARE_DECIMAL_BINARY_OP_WITH_DEC
185#undef _DECLARE_DECIMAL_BINARY_OP_WITH_INT
186
187 // 3.2.9 Comparison operators.
188#define _DECLARE_DECIMAL_COMPARISON(_Op, _Tp) \
189 bool operator _Op(_Tp __lhs, decimal32 __rhs); \
190 bool operator _Op(_Tp __lhs, decimal64 __rhs); \
191 bool operator _Op(_Tp __lhs, decimal128 __rhs); \
192 bool operator _Op(_Tp __lhs, int __rhs); \
193 bool operator _Op(_Tp __lhs, unsigned int __rhs); \
194 bool operator _Op(_Tp __lhs, long __rhs); \
195 bool operator _Op(_Tp __lhs, unsigned long __rhs); \
196 bool operator _Op(_Tp __lhs, long long __rhs); \
197 bool operator _Op(_Tp __lhs, unsigned long long __rhs); \
198 bool operator _Op(int __lhs, _Tp __rhs); \
199 bool operator _Op(unsigned int __lhs, _Tp __rhs); \
200 bool operator _Op(long __lhs, _Tp __rhs); \
201 bool operator _Op(unsigned long __lhs, _Tp __rhs); \
202 bool operator _Op(long long __lhs, _Tp __rhs); \
203 bool operator _Op(unsigned long long __lhs, _Tp __rhs);
204
205 _DECLARE_DECIMAL_COMPARISON(==, decimal32)
206 _DECLARE_DECIMAL_COMPARISON(==, decimal64)
207 _DECLARE_DECIMAL_COMPARISON(==, decimal128)
208
209 _DECLARE_DECIMAL_COMPARISON(!=, decimal32)
210 _DECLARE_DECIMAL_COMPARISON(!=, decimal64)
211 _DECLARE_DECIMAL_COMPARISON(!=, decimal128)
212
213 _DECLARE_DECIMAL_COMPARISON(<, decimal32)
214 _DECLARE_DECIMAL_COMPARISON(<, decimal64)
215 _DECLARE_DECIMAL_COMPARISON(<, decimal128)
216
217 _DECLARE_DECIMAL_COMPARISON(>=, decimal32)
218 _DECLARE_DECIMAL_COMPARISON(>=, decimal64)
219 _DECLARE_DECIMAL_COMPARISON(>=, decimal128)
220
221 _DECLARE_DECIMAL_COMPARISON(>, decimal32)
222 _DECLARE_DECIMAL_COMPARISON(>, decimal64)
223 _DECLARE_DECIMAL_COMPARISON(>, decimal128)
224
225 _DECLARE_DECIMAL_COMPARISON(>=, decimal32)
226 _DECLARE_DECIMAL_COMPARISON(>=, decimal64)
227 _DECLARE_DECIMAL_COMPARISON(>=, decimal128)
228
229#undef _DECLARE_DECIMAL_COMPARISON
230
231 /// 3.2.2 Class decimal32.
232 class decimal32
233 {
234 public:
235 typedef float __decfloat32 __attribute__((mode(SD)));
236
237 // 3.2.2.2 Construct/copy/destroy.
238 decimal32() : __val(0.e-101DF) {}
239
240 // 3.2.2.3 Conversion from floating-point type.
241 explicit decimal32(decimal64 __d64);
242 explicit decimal32(decimal128 __d128);
243 explicit decimal32(float __r) : __val(__r) {}
244 explicit decimal32(double __r) : __val(__r) {}
245 explicit decimal32(long double __r) : __val(__r) {}
246
247 // 3.2.2.4 Conversion from integral type.
248 decimal32(int __z) : __val(__z) {}
249 decimal32(unsigned int __z) : __val(__z) {}
250 decimal32(long __z) : __val(__z) {}
251 decimal32(unsigned long __z) : __val(__z) {}
252 decimal32(long long __z) : __val(__z) {}
253 decimal32(unsigned long long __z) : __val(__z) {}
254
255 /// Conforming extension: Conversion from scalar decimal type.
256 decimal32(__decfloat32 __z) : __val(__z) {}
257
258#if __cplusplus >= 201103L
259 // 3.2.2.5 Conversion to integral type.
260 // Note: explicit per n3407.
261 explicit operator long long() const { return (long long)__val; }
262#endif
263
264 // 3.2.2.6 Increment and decrement operators.
265 decimal32& operator++()
266 {
267 __val += 1;
268 return *this;
269 }
270
271 decimal32 operator++(int)
272 {
273 decimal32 __tmp = *this;
274 __val += 1;
275 return __tmp;
276 }
277
278 decimal32& operator--()
279 {
280 __val -= 1;
281 return *this;
282 }
283
284 decimal32 operator--(int)
285 {
286 decimal32 __tmp = *this;
287 __val -= 1;
288 return __tmp;
289 }
290
291 // 3.2.2.7 Compound assignment.
292#define _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(_Op) \
293 decimal32& operator _Op(decimal32 __rhs); \
294 decimal32& operator _Op(decimal64 __rhs); \
295 decimal32& operator _Op(decimal128 __rhs); \
296 decimal32& operator _Op(int __rhs); \
297 decimal32& operator _Op(unsigned int __rhs); \
298 decimal32& operator _Op(long __rhs); \
299 decimal32& operator _Op(unsigned long __rhs); \
300 decimal32& operator _Op(long long __rhs); \
301 decimal32& operator _Op(unsigned long long __rhs);
302
303 _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(+=)
304 _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(-=)
305 _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(*=)
306 _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT(/=)
307#undef _DECLARE_DECIMAL32_COMPOUND_ASSIGNMENT
308
309 private:
310 __decfloat32 __val;
311
312 public:
313 __decfloat32 __getval(void) { return __val; }
314 void __setval(__decfloat32 __x) { __val = __x; }
315 };
316
317 /// 3.2.3 Class decimal64.
318 class decimal64
319 {
320 public:
321 typedef float __decfloat64 __attribute__((mode(DD)));
322
323 // 3.2.3.2 Construct/copy/destroy.
324 decimal64() : __val(0.e-398dd) {}
325
326 // 3.2.3.3 Conversion from floating-point type.
327 decimal64(decimal32 d32);
328 explicit decimal64(decimal128 d128);
329 explicit decimal64(float __r) : __val(__r) {}
330 explicit decimal64(double __r) : __val(__r) {}
331 explicit decimal64(long double __r) : __val(__r) {}
332
333 // 3.2.3.4 Conversion from integral type.
334 decimal64(int __z) : __val(__z) {}
335 decimal64(unsigned int __z) : __val(__z) {}
336 decimal64(long __z) : __val(__z) {}
337 decimal64(unsigned long __z) : __val(__z) {}
338 decimal64(long long __z) : __val(__z) {}
339 decimal64(unsigned long long __z) : __val(__z) {}
340
341 /// Conforming extension: Conversion from scalar decimal type.
342 decimal64(__decfloat64 __z) : __val(__z) {}
343
344#if __cplusplus >= 201103L
345 // 3.2.3.5 Conversion to integral type.
346 // Note: explicit per n3407.
347 explicit operator long long() const { return (long long)__val; }
348#endif
349
350 // 3.2.3.6 Increment and decrement operators.
351 decimal64& operator++()
352 {
353 __val += 1;
354 return *this;
355 }
356
357 decimal64 operator++(int)
358 {
359 decimal64 __tmp = *this;
360 __val += 1;
361 return __tmp;
362 }
363
364 decimal64& operator--()
365 {
366 __val -= 1;
367 return *this;
368 }
369
370 decimal64 operator--(int)
371 {
372 decimal64 __tmp = *this;
373 __val -= 1;
374 return __tmp;
375 }
376
377 // 3.2.3.7 Compound assignment.
378#define _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(_Op) \
379 decimal64& operator _Op(decimal32 __rhs); \
380 decimal64& operator _Op(decimal64 __rhs); \
381 decimal64& operator _Op(decimal128 __rhs); \
382 decimal64& operator _Op(int __rhs); \
383 decimal64& operator _Op(unsigned int __rhs); \
384 decimal64& operator _Op(long __rhs); \
385 decimal64& operator _Op(unsigned long __rhs); \
386 decimal64& operator _Op(long long __rhs); \
387 decimal64& operator _Op(unsigned long long __rhs);
388
389 _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(+=)
390 _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(-=)
391 _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(*=)
392 _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT(/=)
393#undef _DECLARE_DECIMAL64_COMPOUND_ASSIGNMENT
394
395 private:
396 __decfloat64 __val;
397
398 public:
399 __decfloat64 __getval(void) { return __val; }
400 void __setval(__decfloat64 __x) { __val = __x; }
401 };
402
403 /// 3.2.4 Class decimal128.
404 class decimal128
405 {
406 public:
407 typedef float __decfloat128 __attribute__((mode(TD)));
408
409 // 3.2.4.2 Construct/copy/destroy.
410 decimal128() : __val(0.e-6176DL) {}
411
412 // 3.2.4.3 Conversion from floating-point type.
413 decimal128(decimal32 d32);
414 decimal128(decimal64 d64);
415 explicit decimal128(float __r) : __val(__r) {}
416 explicit decimal128(double __r) : __val(__r) {}
417 explicit decimal128(long double __r) : __val(__r) {}
418
419
420 // 3.2.4.4 Conversion from integral type.
421 decimal128(int __z) : __val(__z) {}
422 decimal128(unsigned int __z) : __val(__z) {}
423 decimal128(long __z) : __val(__z) {}
424 decimal128(unsigned long __z) : __val(__z) {}
425 decimal128(long long __z) : __val(__z) {}
426 decimal128(unsigned long long __z) : __val(__z) {}
427
428 /// Conforming extension: Conversion from scalar decimal type.
429 decimal128(__decfloat128 __z) : __val(__z) {}
430
431#if __cplusplus >= 201103L
432 // 3.2.4.5 Conversion to integral type.
433 // Note: explicit per n3407.
434 explicit operator long long() const { return (long long)__val; }
435#endif
436
437 // 3.2.4.6 Increment and decrement operators.
438 decimal128& operator++()
439 {
440 __val += 1;
441 return *this;
442 }
443
444 decimal128 operator++(int)
445 {
446 decimal128 __tmp = *this;
447 __val += 1;
448 return __tmp;
449 }
450
451 decimal128& operator--()
452 {
453 __val -= 1;
454 return *this;
455 }
456
457 decimal128 operator--(int)
458 {
459 decimal128 __tmp = *this;
460 __val -= 1;
461 return __tmp;
462 }
463
464 // 3.2.4.7 Compound assignment.
465#define _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(_Op) \
466 decimal128& operator _Op(decimal32 __rhs); \
467 decimal128& operator _Op(decimal64 __rhs); \
468 decimal128& operator _Op(decimal128 __rhs); \
469 decimal128& operator _Op(int __rhs); \
470 decimal128& operator _Op(unsigned int __rhs); \
471 decimal128& operator _Op(long __rhs); \
472 decimal128& operator _Op(unsigned long __rhs); \
473 decimal128& operator _Op(long long __rhs); \
474 decimal128& operator _Op(unsigned long long __rhs);
475
476 _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(+=)
477 _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(-=)
478 _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(*=)
479 _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT(/=)
480#undef _DECLARE_DECIMAL128_COMPOUND_ASSIGNMENT
481
482 private:
483 __decfloat128 __val;
484
485 public:
486 __decfloat128 __getval(void) { return __val; }
487 void __setval(__decfloat128 __x) { __val = __x; }
488 };
489
490#define _GLIBCXX_USE_DECIMAL_ 1
491} // namespace decimal
492 /// @} group decimal
493
494_GLIBCXX_END_NAMESPACE_VERSION
495} // namespace std
496
497#include <decimal/decimal.h>
498
499#pragma GCC diagnostic pop
500#endif /* _GLIBCXX_DECIMAL */
c++config.h
std
ISO C++ entities toplevel namespace is std.
std::decimal
ISO/IEC TR 24733 Decimal floating-point arithmetic.
std::decimal::decimal32_to_long_long
long long decimal32_to_long_long(decimal32 __d)
Non-conforming extension: Conversion to integral type.
std::decimal::decimal32
3.2.2 Class decimal32.
Definition decimal:233
std::decimal::decimal32::decimal32
decimal32(__decfloat32 __z)
Conforming extension: Conversion from scalar decimal type.
Definition decimal:256
std::decimal::decimal64
3.2.3 Class decimal64.
Definition decimal:319
std::decimal::decimal64::decimal64
decimal64(__decfloat64 __z)
Conforming extension: Conversion from scalar decimal type.
Definition decimal:342
std::decimal::decimal128
3.2.4 Class decimal128.
Definition decimal:405
std::decimal::decimal128::decimal128
decimal128(__decfloat128 __z)
Conforming extension: Conversion from scalar decimal type.
Definition decimal:429