CGAL 4.12.1 - Number Types: CGAL::Is_valid< T > Class Template Reference

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$\def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }$

CGAL 4.12.1 - Number Types

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#include <CGAL/utils_classes.h>

Definition

Not all values of a type need to be valid.

The function object class Is_valid checks this.

For example, an expression like NT(0)/NT(0) can result in an invalid number. Routines may have as a precondition that all values are valid.

Is Model Of:: AdaptableFunctor

Operations
bool	operator() (const T &x)
	returns if the argument is valid.