3 * Makes the interface to the underlying bignum package available. */
6 * GiNaC Copyright (C) 1999-2018 Johannes Gutenberg University Mainz, Germany
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #ifndef GINAC_NUMERIC_H
24 #define GINAC_NUMERIC_H
30 #include <cln/complex.h>
36 /** Function pointer to implement callbacks in the case 'Digits' gets changed.
37 * Main purpose of such callbacks is to adjust look-up tables of certain
38 * functions to the new precision. Parameter contains the signed difference
39 * between new Digits and old Digits. */
40 typedef void (* digits_changed_callback)(long);
42 /** This class is used to instantiate a global singleton object Digits
43 * which behaves just like Maple's Digits. We need an object rather
44 * than a dumber basic type since as a side-effect we let it change
45 * cl_default_float_format when it gets changed. The only other
46 * meaningful thing to do with it is converting it to an unsigned,
47 * for temporarily storing its value e.g. The user must not create an
48 * own working object of this class! Since C++ forces us to make the
49 * class definition visible in order to use an object we put in a
50 * flag which prevents other objects of that class to be created. */
56 _numeric_digits& operator=(long prec);
58 void print(std::ostream& os) const;
59 void add_callback(digits_changed_callback callback);
62 long digits; ///< Number of decimal digits
63 static bool too_late; ///< Already one object present
64 // Holds a list of functions that get called when digits is changed.
65 std::vector<digits_changed_callback> callbacklist;
69 /** Exception class thrown when a singularity is encountered. */
70 class pole_error : public std::domain_error {
72 explicit pole_error(const std::string& what_arg, int degree);
79 /** This class is a wrapper around CLN-numbers within the GiNaC class
80 * hierarchy. Objects of this type may directly be created by the user.*/
81 class numeric : public basic
83 GINAC_DECLARE_REGISTERED_CLASS(numeric, basic)
90 numeric(unsigned int i);
92 numeric(unsigned long i);
93 numeric(long numer, long denom);
95 numeric(const char *);
97 // functions overriding virtual functions from base classes
99 unsigned precedence() const override {return 30;}
100 bool info(unsigned inf) const override;
101 bool is_polynomial(const ex & var) const override;
102 int degree(const ex & s) const override;
103 int ldegree(const ex & s) const override;
104 ex coeff(const ex & s, int n = 1) const override;
105 bool has(const ex &other, unsigned options = 0) const override;
106 ex eval() const override;
107 ex evalf() const override;
108 ex subs(const exmap & m, unsigned options = 0) const override { return subs_one_level(m, options); } // overwrites basic::subs() for performance reasons
109 ex normal(exmap & repl, exmap & rev_lookup) const override;
110 ex to_rational(exmap & repl) const override;
111 ex to_polynomial(exmap & repl) const override;
112 numeric integer_content() const override;
113 ex smod(const numeric &xi) const override;
114 numeric max_coefficient() const override;
115 ex conjugate() const override;
116 ex real_part() const override;
117 ex imag_part() const override;
118 /** Save (a.k.a. serialize) object into archive. */
119 void archive(archive_node& n) const override;
120 /** Read (a.k.a. deserialize) object from archive. */
121 void read_archive(const archive_node& n, lst& syms) override;
123 /** Implementation of ex::diff for a numeric always returns 0.
125 ex derivative(const symbol &s) const override { return 0; }
126 bool is_equal_same_type(const basic &other) const override;
127 unsigned calchash() const override;
129 // new virtual functions which can be overridden by derived classes
132 // non-virtual functions in this class
134 const numeric add(const numeric &other) const;
135 const numeric sub(const numeric &other) const;
136 const numeric mul(const numeric &other) const;
137 const numeric div(const numeric &other) const;
138 const numeric power(const numeric &other) const;
139 const numeric & add_dyn(const numeric &other) const;
140 const numeric & sub_dyn(const numeric &other) const;
141 const numeric & mul_dyn(const numeric &other) const;
142 const numeric & div_dyn(const numeric &other) const;
143 const numeric & power_dyn(const numeric &other) const;
144 const numeric & operator=(int i);
145 const numeric & operator=(unsigned int i);
146 const numeric & operator=(long i);
147 const numeric & operator=(unsigned long i);
148 const numeric & operator=(double d);
149 const numeric & operator=(const char *s);
150 const numeric inverse() const;
151 numeric step() const;
153 int compare(const numeric &other) const;
154 bool is_equal(const numeric &other) const;
155 bool is_zero() const;
156 bool is_positive() const;
157 bool is_negative() const;
158 bool is_integer() const;
159 bool is_pos_integer() const;
160 bool is_nonneg_integer() const;
161 bool is_even() const;
163 bool is_prime() const;
164 bool is_rational() const;
165 bool is_real() const;
166 bool is_cinteger() const;
167 bool is_crational() const;
168 bool operator==(const numeric &other) const;
169 bool operator!=(const numeric &other) const;
170 bool operator<(const numeric &other) const;
171 bool operator<=(const numeric &other) const;
172 bool operator>(const numeric &other) const;
173 bool operator>=(const numeric &other) const;
175 long to_long() const;
176 double to_double() const;
177 cln::cl_N to_cl_N() const;
178 const numeric real() const;
179 const numeric imag() const;
180 const numeric numer() const;
181 const numeric denom() const;
182 int int_length() const;
183 // converting routines for interfacing with CLN:
184 explicit numeric(const cln::cl_N &z);
187 void print_numeric(const print_context & c, const char *par_open, const char *par_close, const char *imag_sym, const char *mul_sym, unsigned level) const;
188 void do_print(const print_context & c, unsigned level) const;
189 void do_print_latex(const print_latex & c, unsigned level) const;
190 void do_print_csrc(const print_csrc & c, unsigned level) const;
191 void do_print_csrc_cl_N(const print_csrc_cl_N & c, unsigned level) const;
192 void do_print_tree(const print_tree & c, unsigned level) const;
193 void do_print_python_repr(const print_python_repr & c, unsigned level) const;
200 GINAC_DECLARE_UNARCHIVER(numeric);
205 extern const numeric I;
206 extern _numeric_digits Digits;
210 const numeric exp(const numeric &x);
211 const numeric log(const numeric &x);
212 const numeric sin(const numeric &x);
213 const numeric cos(const numeric &x);
214 const numeric tan(const numeric &x);
215 const numeric asin(const numeric &x);
216 const numeric acos(const numeric &x);
217 const numeric atan(const numeric &x);
218 const numeric atan(const numeric &y, const numeric &x);
219 const numeric sinh(const numeric &x);
220 const numeric cosh(const numeric &x);
221 const numeric tanh(const numeric &x);
222 const numeric asinh(const numeric &x);
223 const numeric acosh(const numeric &x);
224 const numeric atanh(const numeric &x);
225 const numeric Li2(const numeric &x);
226 const numeric zeta(const numeric &x);
227 const numeric lgamma(const numeric &x);
228 const numeric tgamma(const numeric &x);
229 const numeric psi(const numeric &x);
230 const numeric psi(const numeric &n, const numeric &x);
231 const numeric factorial(const numeric &n);
232 const numeric doublefactorial(const numeric &n);
233 const numeric binomial(const numeric &n, const numeric &k);
234 const numeric bernoulli(const numeric &n);
235 const numeric fibonacci(const numeric &n);
236 const numeric isqrt(const numeric &x);
237 const numeric sqrt(const numeric &x);
238 const numeric abs(const numeric &x);
239 const numeric mod(const numeric &a, const numeric &b);
240 const numeric smod(const numeric &a, const numeric &b);
241 const numeric irem(const numeric &a, const numeric &b);
242 const numeric irem(const numeric &a, const numeric &b, numeric &q);
243 const numeric iquo(const numeric &a, const numeric &b);
244 const numeric iquo(const numeric &a, const numeric &b, numeric &r);
245 const numeric gcd(const numeric &a, const numeric &b);
246 const numeric lcm(const numeric &a, const numeric &b);
248 // wrapper functions around member functions
249 inline const numeric pow(const numeric &x, const numeric &y)
250 { return x.power(y); }
252 inline const numeric inverse(const numeric &x)
253 { return x.inverse(); }
255 inline numeric step(const numeric &x)
258 inline int csgn(const numeric &x)
261 inline bool is_zero(const numeric &x)
262 { return x.is_zero(); }
264 inline bool is_positive(const numeric &x)
265 { return x.is_positive(); }
267 inline bool is_negative(const numeric &x)
268 { return x.is_negative(); }
270 inline bool is_integer(const numeric &x)
271 { return x.is_integer(); }
273 inline bool is_pos_integer(const numeric &x)
274 { return x.is_pos_integer(); }
276 inline bool is_nonneg_integer(const numeric &x)
277 { return x.is_nonneg_integer(); }
279 inline bool is_even(const numeric &x)
280 { return x.is_even(); }
282 inline bool is_odd(const numeric &x)
283 { return x.is_odd(); }
285 inline bool is_prime(const numeric &x)
286 { return x.is_prime(); }
288 inline bool is_rational(const numeric &x)
289 { return x.is_rational(); }
291 inline bool is_real(const numeric &x)
292 { return x.is_real(); }
294 inline bool is_cinteger(const numeric &x)
295 { return x.is_cinteger(); }
297 inline bool is_crational(const numeric &x)
298 { return x.is_crational(); }
300 inline int to_int(const numeric &x)
301 { return x.to_int(); }
303 inline long to_long(const numeric &x)
304 { return x.to_long(); }
306 inline double to_double(const numeric &x)
307 { return x.to_double(); }
309 inline const numeric real(const numeric &x)
312 inline const numeric imag(const numeric &x)
315 inline const numeric numer(const numeric &x)
316 { return x.numer(); }
318 inline const numeric denom(const numeric &x)
319 { return x.denom(); }
321 // numeric evaluation functions for class constant objects:
330 #endif // ndef GINAC_NUMERIC_H