* Interface to symbolic matrices */
/*
- * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2002 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
matrix(unsigned r, unsigned c, const exvector & m2);
matrix(unsigned r, unsigned c, const lst & l);
- // functions overriding virtual functions from bases classes
+ // functions overriding virtual functions from base classes
public:
void print(const print_context & c, unsigned level = 0) const;
unsigned nops() const;
ex op(int i) const;
ex & let_op(int i);
- ex expand(unsigned options=0) const;
ex eval(int level=0) const;
- ex evalf(int level=0) const;
+ ex evalm(void) const {return *this;}
ex subs(const lst & ls, const lst & lr, bool no_pattern = false) const;
ex eval_indexed(const basic & i) const;
ex add_indexed(const ex & self, const ex & other) const;
ex scalar_mul_indexed(const ex & self, const numeric & other) const;
bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
+
protected:
+ bool match_same_type(const basic & other) const;
unsigned return_type(void) const { return return_types::noncommutative; };
- // new virtual functions which can be overridden by derived classes
- // (none)
// non-virtual functions in this class
public:
matrix sub(const matrix & other) const;
matrix mul(const matrix & other) const;
matrix mul(const numeric & other) const;
+ matrix mul_scalar(const ex & other) const;
+ matrix pow(const ex & expn) const;
const ex & operator() (unsigned ro, unsigned co) const;
- matrix & set(unsigned ro, unsigned co, ex value);
+ ex & operator() (unsigned ro, unsigned co);
+ matrix & set(unsigned ro, unsigned co, const ex & value) { (*this)(ro, co) = value; return *this; }
matrix transpose(void) const;
ex determinant(unsigned algo = determinant_algo::automatic) const;
ex trace(void) const;
inline ex expand(const matrix & m, unsigned options = 0)
{ return m.expand(options); }
-inline bool has(const matrix & m, const ex & other)
-{ return m.has(other); }
-
inline ex eval(const matrix & m, int level = 0)
{ return m.eval(level); }
{ return m.inverse(); }
// utility functions
-inline const matrix &ex_to_matrix(const ex &e)
+
+/** Specialization of is_exactly_a<matrix>(obj) for matrix objects. */
+template<> inline bool is_exactly_a<matrix>(const basic & obj)
{
- return static_cast<const matrix &>(*e.bp);
+ return obj.tinfo()==TINFO_matrix;
}
/** Convert list of lists to matrix. */
/** Convert list of diagonal elements to matrix. */
extern ex diag_matrix(const lst & l);
+/** Create a r times c unit matrix. */
+extern ex unit_matrix(unsigned r, unsigned c);
+
+/** Create a x times x unit matrix. */
+inline ex unit_matrix(unsigned x)
+{ return unit_matrix(x, x); }
+
} // namespace GiNaC
#endif // ndef __GINAC_MATRIX_H__