GiNaC/ginac/numeric.h

/** @file numeric.h
 *
 *  Makes the interface to the underlying bignum package available. */

/*
 *  GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __GINAC_NUMERIC_H__
#define __GINAC_NUMERIC_H__

#include <strstream>
#include "basic.h"
#include "ex.h"

class cl_N;     // We want to include cln.h only in numeric.cpp in order to 
                // avoid namespace pollution and keep compile-time low.

#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
#endif // ndef NO_NAMESPACE_GINAC

#define HASHVALUE_NUMERIC 0x80000001U

/** This class is used to instantiate a global object Digits which
 *  behaves just like Maple's Digits.  We need an object rather than a
 *  dumber basic type since as a side-effect we let it change
 *  cl_default_float_format when it gets changed.  The only other
 *  meaningful thing to do with it is converting it to an unsigned,
 *  for temprary storing its value e.g.  The user must not create an
 *  own working object of this class!  Since C++ forces us to make the
 *  class definition visible in order to use an object we put in a
 *  flag which prevents other objects of that class to be created. */
class _numeric_digits
{
// member functions
public:
    _numeric_digits();
    _numeric_digits& operator=(long prec);
    operator long();
    void print(ostream & os) const;
// member variables
private:
    long digits;
    static bool too_late;
};

/** This class is a wrapper around CLN-numbers within the GiNaC class
 *  hierarchy. Objects of this type may directly be created by the user.*/
class numeric : public basic
{
    GINAC_DECLARE_REGISTERED_CLASS(numeric, basic)

// friends
    friend const numeric exp(const numeric & x);
    friend const numeric log(const numeric & x);
    friend const numeric sin(const numeric & x);
    friend const numeric cos(const numeric & x);
    friend const numeric tan(const numeric & x);
    friend const numeric asin(const numeric & x);
    friend const numeric acos(const numeric & x);
    friend const numeric atan(const numeric & x);
    friend const numeric atan(const numeric & y, const numeric & x);
    friend const numeric sinh(const numeric & x);
    friend const numeric cosh(const numeric & x);
    friend const numeric tanh(const numeric & x);
    friend const numeric asinh(const numeric & x);
    friend const numeric acosh(const numeric & x);
    friend const numeric atanh(const numeric & x);
    friend const numeric zeta(const numeric & x);
    friend const numeric bernoulli(const numeric & n);
    friend const numeric fibonacci(const numeric & n);
    friend numeric abs(const numeric & x);
    friend numeric mod(const numeric & a, const numeric & b);
    friend numeric smod(const numeric & a, const numeric & b);
    friend numeric irem(const numeric & a, const numeric & b);
    friend numeric irem(const numeric & a, const numeric & b, numeric & q);
    friend numeric iquo(const numeric & a, const numeric & b);
    friend numeric iquo(const numeric & a, const numeric & b, numeric & r);
    friend numeric sqrt(const numeric & x);
    friend numeric isqrt(const numeric & x);
    friend numeric gcd(const numeric & a, const numeric & b);
    friend numeric lcm(const numeric & a, const numeric & b);

// member functions

    // default constructor, destructor, copy constructor assignment
    // operator and helpers
public:
    numeric();
    ~numeric();
    numeric(const numeric & other);
    const numeric & operator=(const numeric & other);
protected:
    void copy(const numeric & other);
    void destroy(bool call_parent);

    // other constructors
public:
    explicit numeric(int i);
    explicit numeric(unsigned int i);
    explicit numeric(long i);
    explicit numeric(unsigned long i);
    explicit numeric(long numer, long denom);
    explicit numeric(double d);
    explicit numeric(const char *);
    numeric(const cl_N & z);
    
    // functions overriding virtual functions from bases classes
public:
    basic * duplicate() const;
    void print(ostream & os, unsigned precedence=0) const;
    void printraw(ostream & os) const;
    void printtree(ostream & os, unsigned indent) const;
    void printcsrc(ostream & os, unsigned type, unsigned precedence=0) const;
    bool info(unsigned inf) const;
    bool has(const ex & other) const;
    ex eval(int level=0) const;
    ex evalf(int level=0) const;
    ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
    ex to_rational(lst &repl_lst) const;
    numeric integer_content(void) const;
    ex smod(const numeric &xi) const;
    numeric max_coefficient(void) const;
protected:
    ex derivative(const symbol & s) const;
    int compare_same_type(const basic & other) const;
    bool is_equal_same_type(const basic & other) const;
    unsigned calchash(void) const;

    // new virtual functions which can be overridden by derived classes
    // (none)

    // non-virtual functions in this class
public:
    numeric add(const numeric & other) const;
    numeric sub(const numeric & other) const;
    numeric mul(const numeric & other) const;
    numeric div(const numeric & other) const;
    numeric power(const numeric & other) const;
    const numeric & add_dyn(const numeric & other) const;
    const numeric & sub_dyn(const numeric & other) const;
    const numeric & mul_dyn(const numeric & other) const;
    const numeric & div_dyn(const numeric & other) const;
    const numeric & power_dyn(const numeric & other) const;
    const numeric & operator=(int i);
    const numeric & operator=(unsigned int i);
    const numeric & operator=(long i);
    const numeric & operator=(unsigned long i);
    const numeric & operator=(double d);
    const numeric & operator=(const char * s);
    numeric inverse(void) const;
    int csgn(void) const;
    int compare(const numeric & other) const;
    bool is_equal(const numeric & other) const;
    bool is_zero(void) const;
    bool is_positive(void) const;
    bool is_negative(void) const;
    bool is_integer(void) const;
    bool is_pos_integer(void) const;
    bool is_nonneg_integer(void) const;
    bool is_even(void) const;
    bool is_odd(void) const;
    bool is_prime(void) const;
    bool is_rational(void) const;
    bool is_real(void) const;
    bool is_cinteger(void) const;
    bool is_crational(void) const;
    bool operator==(const numeric & other) const;
    bool operator!=(const numeric & other) const;
    bool operator<(const numeric & other) const;
    bool operator<=(const numeric & other) const;
    bool operator>(const numeric & other) const;
    bool operator>=(const numeric & other) const;
    int to_int(void) const;
    long to_long(void) const;
    double to_double(void) const;
    const numeric real(void) const;
    const numeric imag(void) const;
    const numeric numer(void) const;
    const numeric denom(void) const;
    int int_length(void) const;

// member variables

protected:
    static unsigned precedence;
    ::cl_N *value;
};

// global constants

extern const numeric some_numeric;
extern const numeric I;
extern const type_info & typeid_numeric;
extern _numeric_digits Digits;

//#define is_a_numeric_hash(x) ((x)==HASHVALUE_NUMERIC)
// may have to be changed to ((x)>=0x80000000U)

// has been changed
//#define is_a_numeric_hash(x) ((x)&0x80000000U)

// global functions

const numeric exp(const numeric & x);
const numeric log(const numeric & x);
const numeric sin(const numeric & x);
const numeric cos(const numeric & x);
const numeric tan(const numeric & x);
const numeric asin(const numeric & x);
const numeric acos(const numeric & x);
const numeric atan(const numeric & x);
const numeric atan(const numeric & y, const numeric & x);
const numeric sinh(const numeric & x);
const numeric cosh(const numeric & x);
const numeric tanh(const numeric & x);
const numeric asinh(const numeric & x);
const numeric acosh(const numeric & x);
const numeric atanh(const numeric & x);
const numeric zeta(const numeric & x);
const numeric lgamma(const numeric & x);
const numeric tgamma(const numeric & x);
const numeric psi(const numeric & x);
const numeric psi(const numeric & n, const numeric & x);
const numeric factorial(const numeric & n);
const numeric doublefactorial(const numeric & n);
const numeric binomial(const numeric & n, const numeric & k);
const numeric bernoulli(const numeric & n);
const numeric fibonacci(const numeric & n);

numeric abs(const numeric & x);
numeric mod(const numeric & a, const numeric & b);
numeric smod(const numeric & a, const numeric & b);
numeric irem(const numeric & a, const numeric & b);
numeric irem(const numeric & a, const numeric & b, numeric & q);
numeric iquo(const numeric & a, const numeric & b);
numeric iquo(const numeric & a, const numeric & b, numeric & r);
numeric sqrt(const numeric & x);
numeric isqrt(const numeric & x);

numeric gcd(const numeric & a, const numeric & b);
numeric lcm(const numeric & a, const numeric & b);

// wrapper functions around member functions
inline numeric pow(const numeric & x, const numeric & y)
{ return x.power(y); }

inline numeric inverse(const numeric & x)
{ return x.inverse(); }

inline int csgn(const numeric & x)
{ return x.csgn(); }

inline bool is_zero(const numeric & x)
{ return x.is_zero(); }

inline bool is_positive(const numeric & x)
{ return x.is_positive(); }

inline bool is_integer(const numeric & x)
{ return x.is_integer(); }

inline bool is_pos_integer(const numeric & x)
{ return x.is_pos_integer(); }

inline bool is_nonneg_integer(const numeric & x)
{ return x.is_nonneg_integer(); }

inline bool is_even(const numeric & x)
{ return x.is_even(); }

inline bool is_odd(const numeric & x)
{ return x.is_odd(); }

inline bool is_prime(const numeric & x)
{ return x.is_prime(); }

inline bool is_rational(const numeric & x)
{ return x.is_rational(); }

inline bool is_real(const numeric & x)
{ return x.is_real(); }

inline bool is_cinteger(const numeric & x)
{ return x.is_cinteger(); }

inline bool is_crational(const numeric & x)
{ return x.is_crational(); }

inline const numeric real(const numeric & x)
{ return x.real(); }

inline const numeric imag(const numeric & x)
{ return x.imag(); }

inline const numeric numer(const numeric & x)
{ return x.numer(); }

inline const numeric denom(const numeric & x)
{ return x.denom(); }

// numeric evaluation functions for class constant objects:

ex PiEvalf(void);
ex EulerEvalf(void);
ex CatalanEvalf(void);


// utility functions
inline const numeric &ex_to_numeric(const ex &e)
{
    return static_cast<const numeric &>(*e.bp);
}


#ifndef NO_NAMESPACE_GINAC
} // namespace GiNaC
#endif // ndef NO_NAMESPACE_GINAC

#endif // ndef __GINAC_NUMERIC_H__
1	cbauer	1.1	/** @file numeric.h
2			*
3	cbauer	1.4	* Makes the interface to the underlying bignum package available. */
4
5			/*
6	kreckel	1.17	* GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
7	cbauer	1.2	*
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.
12			*
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.
17			*
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21			*/
22	cbauer	1.1
23	cbauer	1.2	#ifndef __GINAC_NUMERIC_H__
24			#define __GINAC_NUMERIC_H__
25	cbauer	1.1
26			#include <strstream>
27	cbauer	1.21	#include "basic.h"
28			#include "ex.h"
29	cbauer	1.1
30			class cl_N; // We want to include cln.h only in numeric.cpp in order to
31			// avoid namespace pollution and keep compile-time low.
32
33	kreckel	1.22	#ifndef NO_NAMESPACE_GINAC
34	cbauer	1.5	namespace GiNaC {
35	kreckel	1.22	#endif // ndef NO_NAMESPACE_GINAC
36	cbauer	1.5
37			#define HASHVALUE_NUMERIC 0x80000001U
38
39	cbauer	1.1	/** This class is used to instantiate a global object Digits which
40			* behaves just like Maple's Digits. We need an object rather than a
41			* dumber basic type since as a side-effect we let it change
42			* cl_default_float_format when it gets changed. The only other
43			* meaningful thing to do with it is converting it to an unsigned,
44			* for temprary storing its value e.g. The user must not create an
45			* own working object of this class! Since C++ forces us to make the
46			* class definition visible in order to use an object we put in a
47			* flag which prevents other objects of that class to be created. */
48			class _numeric_digits
49			{
50			// member functions
51			public:
52			_numeric_digits();
53			_numeric_digits& operator=(long prec);
54			operator long();
55			void print(ostream & os) const;
56			// member variables
57			private:
58			long digits;
59			static bool too_late;
60			};
61
62			/** This class is a wrapper around CLN-numbers within the GiNaC class
63			* hierarchy. Objects of this type may directly be created by the user.*/
64			class numeric : public basic
65			{
66	cbauer	1.18	GINAC_DECLARE_REGISTERED_CLASS(numeric, basic)
67
68	cbauer	1.1	// friends
69	kreckel	1.20	friend const numeric exp(const numeric & x);
70			friend const numeric log(const numeric & x);
71			friend const numeric sin(const numeric & x);
72			friend const numeric cos(const numeric & x);
73			friend const numeric tan(const numeric & x);
74			friend const numeric asin(const numeric & x);
75			friend const numeric acos(const numeric & x);
76			friend const numeric atan(const numeric & x);
77			friend const numeric atan(const numeric & y, const numeric & x);
78			friend const numeric sinh(const numeric & x);
79			friend const numeric cosh(const numeric & x);
80			friend const numeric tanh(const numeric & x);
81			friend const numeric asinh(const numeric & x);
82			friend const numeric acosh(const numeric & x);
83			friend const numeric atanh(const numeric & x);
84			friend const numeric zeta(const numeric & x);
85			friend const numeric bernoulli(const numeric & n);
86	kreckel	1.27	friend const numeric fibonacci(const numeric & n);
87	kreckel	1.16	friend numeric abs(const numeric & x);
88			friend numeric mod(const numeric & a, const numeric & b);
89			friend numeric smod(const numeric & a, const numeric & b);
90			friend numeric irem(const numeric & a, const numeric & b);
91			friend numeric irem(const numeric & a, const numeric & b, numeric & q);
92			friend numeric iquo(const numeric & a, const numeric & b);
93			friend numeric iquo(const numeric & a, const numeric & b, numeric & r);
94			friend numeric sqrt(const numeric & x);
95			friend numeric isqrt(const numeric & x);
96			friend numeric gcd(const numeric & a, const numeric & b);
97			friend numeric lcm(const numeric & a, const numeric & b);
98	cbauer	1.1
99			// member functions
100
101			// default constructor, destructor, copy constructor assignment
102			// operator and helpers
103			public:
104			numeric();
105			~numeric();
106	kreckel	1.16	numeric(const numeric & other);
107			const numeric & operator=(const numeric & other);
108	cbauer	1.1	protected:
109	kreckel	1.16	void copy(const numeric & other);
110	cbauer	1.1	void destroy(bool call_parent);
111
112			// other constructors
113			public:
114			explicit numeric(int i);
115			explicit numeric(unsigned int i);
116			explicit numeric(long i);
117			explicit numeric(unsigned long i);
118			explicit numeric(long numer, long denom);
119			explicit numeric(double d);
120	cbauer	1.19	explicit numeric(const char *);
121	kreckel	1.24	numeric(const cl_N & z);
122
123	cbauer	1.1	// functions overriding virtual functions from bases classes
124			public:
125			basic * duplicate() const;
126	kreckel	1.14	void print(ostream & os, unsigned precedence=0) const;
127	cbauer	1.1	void printraw(ostream & os) const;
128			void printtree(ostream & os, unsigned indent) const;
129			void printcsrc(ostream & os, unsigned type, unsigned precedence=0) const;
130			bool info(unsigned inf) const;
131	kreckel	1.25	bool has(const ex & other) const;
132	kreckel	1.22	ex eval(int level=0) const;
133	cbauer	1.1	ex evalf(int level=0) const;
134			ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
135	cbauer	1.33	ex to_rational(lst &repl_lst) const;
136	cbauer	1.1	numeric integer_content(void) const;
137	kreckel	1.16	ex smod(const numeric &xi) const;
138	cbauer	1.1	numeric max_coefficient(void) const;
139			protected:
140	kreckel	1.23	ex derivative(const symbol & s) const;
141	cbauer	1.19	int compare_same_type(const basic & other) const;
142			bool is_equal_same_type(const basic & other) const;
143	frink	1.26	unsigned calchash(void) const;
144	cbauer	1.1
145			// new virtual functions which can be overridden by derived classes
146			// (none)
147
148			// non-virtual functions in this class
149			public:
150	kreckel	1.16	numeric add(const numeric & other) const;
151			numeric sub(const numeric & other) const;
152			numeric mul(const numeric & other) const;
153			numeric div(const numeric & other) const;
154			numeric power(const numeric & other) const;
155			const numeric & add_dyn(const numeric & other) const;
156			const numeric & sub_dyn(const numeric & other) const;
157			const numeric & mul_dyn(const numeric & other) const;
158			const numeric & div_dyn(const numeric & other) const;
159			const numeric & power_dyn(const numeric & other) const;
160			const numeric & operator=(int i);
161			const numeric & operator=(unsigned int i);
162			const numeric & operator=(long i);
163			const numeric & operator=(unsigned long i);
164			const numeric & operator=(double d);
165	cbauer	1.19	const numeric & operator=(const char * s);
166	cbauer	1.1	numeric inverse(void) const;
167	kreckel	1.6	int csgn(void) const;
168	kreckel	1.16	int compare(const numeric & other) const;
169			bool is_equal(const numeric & other) const;
170	cbauer	1.1	bool is_zero(void) const;
171			bool is_positive(void) const;
172			bool is_negative(void) const;
173			bool is_integer(void) const;
174			bool is_pos_integer(void) const;
175			bool is_nonneg_integer(void) const;
176			bool is_even(void) const;
177			bool is_odd(void) const;
178			bool is_prime(void) const;
179			bool is_rational(void) const;
180			bool is_real(void) const;
181	kreckel	1.13	bool is_cinteger(void) const;
182			bool is_crational(void) const;
183	kreckel	1.16	bool operator==(const numeric & other) const;
184			bool operator!=(const numeric & other) const;
185			bool operator<(const numeric & other) const;
186			bool operator<=(const numeric & other) const;
187			bool operator>(const numeric & other) const;
188			bool operator>=(const numeric & other) const;
189	cbauer	1.1	int to_int(void) const;
190	kreckel	1.20	long to_long(void) const;
191	cbauer	1.1	double to_double(void) const;
192	kreckel	1.28	const numeric real(void) const;
193			const numeric imag(void) const;
194			const numeric numer(void) const;
195			const numeric denom(void) const;
196	cbauer	1.1	int int_length(void) const;
197
198			// member variables
199
200			protected:
201			static unsigned precedence;
202	kreckel	1.35	::cl_N *value;
203	cbauer	1.1	};
204
205			// global constants
206
207			extern const numeric some_numeric;
208			extern const numeric I;
209	cbauer	1.19	extern const type_info & typeid_numeric;
210	cbauer	1.1	extern _numeric_digits Digits;
211
212	frink	1.26	//#define is_a_numeric_hash(x) ((x)==HASHVALUE_NUMERIC)
213	cbauer	1.1	// may have to be changed to ((x)>=0x80000000U)
214	frink	1.26
215			// has been changed
216			//#define is_a_numeric_hash(x) ((x)&0x80000000U)
217	cbauer	1.1
218			// global functions
219
220	kreckel	1.20	const numeric exp(const numeric & x);
221			const numeric log(const numeric & x);
222			const numeric sin(const numeric & x);
223			const numeric cos(const numeric & x);
224			const numeric tan(const numeric & x);
225			const numeric asin(const numeric & x);
226			const numeric acos(const numeric & x);
227			const numeric atan(const numeric & x);
228			const numeric atan(const numeric & y, const numeric & x);
229			const numeric sinh(const numeric & x);
230			const numeric cosh(const numeric & x);
231			const numeric tanh(const numeric & x);
232			const numeric asinh(const numeric & x);
233			const numeric acosh(const numeric & x);
234			const numeric atanh(const numeric & x);
235			const numeric zeta(const numeric & x);
236	kreckel	1.30	const numeric lgamma(const numeric & x);
237			const numeric tgamma(const numeric & x);
238	kreckel	1.20	const numeric psi(const numeric & x);
239			const numeric psi(const numeric & n, const numeric & x);
240			const numeric factorial(const numeric & n);
241			const numeric doublefactorial(const numeric & n);
242			const numeric binomial(const numeric & n, const numeric & k);
243			const numeric bernoulli(const numeric & n);
244			const numeric fibonacci(const numeric & n);
245	kreckel	1.16
246			numeric abs(const numeric & x);
247			numeric mod(const numeric & a, const numeric & b);
248			numeric smod(const numeric & a, const numeric & b);
249			numeric irem(const numeric & a, const numeric & b);
250			numeric irem(const numeric & a, const numeric & b, numeric & q);
251			numeric iquo(const numeric & a, const numeric & b);
252			numeric iquo(const numeric & a, const numeric & b, numeric & r);
253			numeric sqrt(const numeric & x);
254			numeric isqrt(const numeric & x);
255	cbauer	1.1
256	kreckel	1.16	numeric gcd(const numeric & a, const numeric & b);
257			numeric lcm(const numeric & a, const numeric & b);
258	cbauer	1.1
259			// wrapper functions around member functions
260	kreckel	1.16	inline numeric pow(const numeric & x, const numeric & y)
261			{ return x.power(y); }
262
263			inline numeric inverse(const numeric & x)
264	cbauer	1.1	{ return x.inverse(); }
265	kreckel	1.6
266	kreckel	1.32	inline int csgn(const numeric & x)
267	kreckel	1.6	{ return x.csgn(); }
268	cbauer	1.1
269	kreckel	1.16	inline bool is_zero(const numeric & x)
270	cbauer	1.1	{ return x.is_zero(); }
271
272	kreckel	1.16	inline bool is_positive(const numeric & x)
273	cbauer	1.1	{ return x.is_positive(); }
274
275	kreckel	1.16	inline bool is_integer(const numeric & x)
276	cbauer	1.1	{ return x.is_integer(); }
277
278	kreckel	1.16	inline bool is_pos_integer(const numeric & x)
279	cbauer	1.1	{ return x.is_pos_integer(); }
280
281	kreckel	1.16	inline bool is_nonneg_integer(const numeric & x)
282	cbauer	1.1	{ return x.is_nonneg_integer(); }
283
284	kreckel	1.16	inline bool is_even(const numeric & x)
285	cbauer	1.1	{ return x.is_even(); }
286
287	kreckel	1.16	inline bool is_odd(const numeric & x)
288	cbauer	1.1	{ return x.is_odd(); }
289
290	kreckel	1.16	inline bool is_prime(const numeric & x)
291	cbauer	1.1	{ return x.is_prime(); }
292
293	kreckel	1.16	inline bool is_rational(const numeric & x)
294	cbauer	1.1	{ return x.is_rational(); }
295
296	kreckel	1.16	inline bool is_real(const numeric & x)
297	cbauer	1.1	{ return x.is_real(); }
298
299	kreckel	1.16	inline bool is_cinteger(const numeric & x)
300	kreckel	1.14	{ return x.is_cinteger(); }
301
302	kreckel	1.16	inline bool is_crational(const numeric & x)
303	kreckel	1.14	{ return x.is_crational(); }
304
305	kreckel	1.32	inline const numeric real(const numeric & x)
306	cbauer	1.1	{ return x.real(); }
307
308	kreckel	1.32	inline const numeric imag(const numeric & x)
309	cbauer	1.1	{ return x.imag(); }
310
311	kreckel	1.32	inline const numeric numer(const numeric & x)
312	cbauer	1.1	{ return x.numer(); }
313
314	kreckel	1.32	inline const numeric denom(const numeric & x)
315	cbauer	1.1	{ return x.denom(); }
316
317	kreckel	1.11	// numeric evaluation functions for class constant objects:
318
319	cbauer	1.1	ex PiEvalf(void);
320	kreckel	1.31	ex EulerEvalf(void);
321	cbauer	1.1	ex CatalanEvalf(void);
322
323	kreckel	1.23
324	cbauer	1.5	// utility functions
325	kreckel	1.23	inline const numeric &ex_to_numeric(const ex &e)
326			{
327			return static_cast<const numeric &>(*e.bp);
328			}
329
330	cbauer	1.1
331	kreckel	1.22	#ifndef NO_NAMESPACE_GINAC
332	cbauer	1.5	} // namespace GiNaC
333	kreckel	1.22	#endif // ndef NO_NAMESPACE_GINAC
334	cbauer	1.1
335	cbauer	1.2	#endif // ndef __GINAC_NUMERIC_H__
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