utilities.cpp File Reference

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Namespaces
namespace	GiNaC
Functions
const ex	GiNaC::prod (const lst &l) throw ( invalid_argument )
	Computes the product of a list of expressions.
const ex	GiNaC::lcm (const lst &l) throw ( invalid_argument )
	Computes the least common multiple of a list of expressions.
long	GiNaC::lcm (long a, long b)
	Computes the least common multiple of two machine integers a and b.
long	GiNaC::gcd (long a, long b)
	Computes the greatest common divisor of two integers a and b.
long	GiNaC::numerator (long a, long b)
	Computes the numerator q such that b / a = q / r and q and r are coprime.
long	GiNaC::denominator (long a, long b)
	Computes the numerator r such that b / a = q / r and q and r are coprime.
bool	GiNaC::is_constant (const ex &polynomial, const vector< symbol > &symbolLst)
	Determines whether the given polynomial expression is constant in the given list of variables.
bool	GiNaC::is_rational_polynomial (const ex &p, const symbol &x)
	Tests whether the given expression p is a rational polynomial in x.
bool	GiNaC::is_realalgebraic_polynomial (const ex &p, const symbol &x)
	Tests whether the given expression p is a polynomial in x with real algebraic coefficients, i.e.
bool	GiNaC::is_realalgebraic_term (const ex &p)
	Tests whether the given expression p is a term only containing only numbers returning true on info(info_flags::numeric) && (info(info_flags::rational) || (info(info_flags::real) && info_flags::algebraic)).
sign	GiNaC::sgn (const numeric &n)
	Determines the sign of the given numeric.
const ex	GiNaC::monpart (const ex &polynomial, const vector< symbol > &symbolLst)
	For internal use only! Computes the monomial underlying the given polynomial in case the polynomial is a single term.
const ex	GiNaC::coeffpart (const ex &polynomial, const vector< symbol > &symbolLst)
	For internal use only! Computes the polynomial coefficient underlying the given polynomial in case the polynomial is a single term.
void	GiNaC::isolateByVariables (const ex &polynomial, const vector< symbol > &symbolLst, ex &coefficient, ex &monomial)
	For internal use only! Determins the monomial and its coefficient of the given polynomial w.r.t.
const GiNaC::ex	GiNaC::rationalize (const GiNaC::ex &p, const vector< GiNaC::symbol > &symbolLst)
	Converts all coefficients of the given rational polynomial in the variables symbolLst to an exact rational numeric, so that is_rational_polynomial returns true.
const GiNaC::ex	GiNaC::rationalize (const GiNaC::ex &p, const GiNaC::symbol &s)
	Converts all coefficients of the given rational polynomial in the variable s to an exact rational numeric, so that is_rational_polynomial returns true.
const GiNaC::numeric	GiNaC::rationalize (const GiNaC::numeric &n)
	Converts the given numeric value to an exact numeric one.
const vector< symbol >	GiNaC::sortVariables (const vector< symbol > &l)
	Sorts the given list of symbols lexicographicly.
bool	GiNaC::symbol_is_lesseq_lex (const symbol &a, const symbol &b)
	Compares two expressions lexicographically by their string representations.
bool	GiNaC::symbol_is_less_lex (const symbol &a, const symbol &b)
	Compares two expressions lexicographically by their string representations.
const map< int, ex >	GiNaC::signedSubresultants (const ex &A, const ex &B, const symbol &sym)
	Returns the signed Subresultant sequence.
const vector< ex >	GiNaC::signedSubresultantsCoefficients (const ex &A, const ex &B, const symbol &sym) throw ( invalid_argument )
	Returns the Signed Subresultant Coefficient sequence.