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 \
45 that is currently not available.
46 #endif
47 
48 namespace 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  */
63 namespace 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 */
std::decimal::decimal32::decimal32
decimal32(__decfloat32 __z)
Conforming extension: Conversion from scalar decimal type.
Definition: decimal:256
std::decimal::decimal128
3.2.4 Class decimal128.
Definition: decimal:404
std::decimal::decimal64
3.2.3 Class decimal64.
Definition: decimal:318
std
ISO C++ entities toplevel namespace is std.
c++config.h
std::decimal::decimal32_to_long_long
long long decimal32_to_long_long(decimal32 __d)
Non-conforming extension: Conversion to integral type.
std::decimal::decimal64::decimal64
decimal64(__decfloat64 __z)
Conforming extension: Conversion from scalar decimal type.
Definition: decimal:342
std::decimal::decimal128::decimal128
decimal128(__decfloat128 __z)
Conforming extension: Conversion from scalar decimal type.
Definition: decimal:429
std::operator+
constexpr complex< _Tp > operator+(const complex< _Tp > &__x, const complex< _Tp > &__y)
Return new complex value x plus y.
Definition: complex:374
std::decimal::decimal32
3.2.2 Class decimal32.
Definition: decimal:232
std::operator-
constexpr complex< _Tp > operator-(const complex< _Tp > &__x, const complex< _Tp > &__y)
Return new complex value x minus y.
Definition: complex:404