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added polynomial evaluation at algebraic point

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2012-12-08 20:39:16 -08:00
parent bf2340850a
commit 0d230375be
9 changed files with 266 additions and 26 deletions
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25
src/ast/expr2polynomial.h
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@ -29,7 +29,24 @@ class expr2polynomial {
struct imp;
imp * m_imp;
public:
expr2polynomial(ast_manager & am, polynomial::manager & pm, expr2var * e2v);
expr2polynomial(ast_manager & am,
polynomial::manager & pm,
expr2var * e2v,
/*
If true, the expressions converted into
polynomials should only contain Z3 free variables.
A Z3 variable x, with idx i, is converted into
the variable i of the polynomial manager pm.
An exception is thrown if there is a mismatch between
the sorts x and the variable in the polynomial manager.
The argument e2v is ignored when use_var_idxs is true.
Moreover, only real variables are allowed.
*/
bool use_var_idxs = false
);
virtual ~expr2polynomial();
ast_manager & m() const;
@ -63,6 +80,8 @@ public:
/**
\brief Return the mapping from expressions to variables
\pre the object was created using use_var_idxs = false.
*/
expr2var const & get_mapping() const;
@ -74,10 +93,10 @@ public:
/**
\brief Return true if the variable is associated with an expression of integer sort.
*/
virtual bool is_int(polynomial::var x) const = 0;
virtual bool is_int(polynomial::var x) const { UNREACHABLE(); return false; }
protected:
virtual polynomial::var mk_var(bool is_int) = 0;
virtual polynomial::var mk_var(bool is_int) { UNREACHABLE(); return polynomial::null_var; }
};
class default_expr2polynomial : public expr2polynomial {