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return const & where possible

This commit is contained in:
Michael Hemmer 2010-09-02 15:33:28 +00:00
parent 1782cbf064
commit a5e7591328
1 changed files with 8 additions and 7 deletions
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15
Polynomial/include/CGAL/Polynomial_traits_d.h
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@ -351,7 +351,7 @@ public:
struct Innermost_leading_coefficient
:public std::unary_function <ICoeff, ICoeff>{
ICoeff operator()(const ICoeff& x){return x;}
const ICoeff& operator()(const ICoeff& x){return x;}
};
struct Degree_vector{
@ -365,7 +365,7 @@ public:
struct Get_innermost_coefficient
: public std::binary_function< ICoeff, Polynomial_d, Exponent_vector > {
ICoeff operator()( const Polynomial_d& p, Exponent_vector ) {
const ICoeff& operator()( const Polynomial_d& p, Exponent_vector ) {
return p;
}
};
@ -699,11 +699,12 @@ public:
struct Get_coefficient
: public std::binary_function<Polynomial_d, int, Coefficient_type > {
Coefficient_type operator()( const Polynomial_d& p, int i) const {
const Coefficient_type& operator()( const Polynomial_d& p, int i) const {
static const Coefficient_type zero = Coefficient_type(0);
CGAL_precondition( i >= 0 );
typename PT::Degree degree;
if( i > degree(p) )
return Coefficient_type(0);
return zero;
return p[i];
}
};
@ -714,7 +715,7 @@ public:
std::binary_function< Polynomial_d, Exponent_vector, Innermost_coefficient_type >
{
Innermost_coefficient_type
const Innermost_coefficient_type&
operator()( const Polynomial_d& p, Exponent_vector ev ) const {
CGAL_precondition( !ev.empty() );
typename PTC::Get_innermost_coefficient gic;
@ -848,7 +849,7 @@ public:
// Leading_coefficient;
struct Leading_coefficient
: public std::unary_function< Polynomial_d , Coefficient_type>{
Coefficient_type operator()(const Polynomial_d& p) const {
const Coefficient_type& operator()(const Polynomial_d& p) const {
return p.lcoeff();
}
};
@ -856,7 +857,7 @@ public:
// Innermost_leading_coefficient;
struct Innermost_leading_coefficient
: public std::unary_function< Polynomial_d , Innermost_coefficient_type>{
Innermost_coefficient_type
const Innermost_coefficient_type&
operator()(const Polynomial_d& p) const {
typename PTC::Innermost_leading_coefficient ilcoeff;
typename PT::Leading_coefficient lcoeff;