CGAL 5.4 - Number Types
CGAL::Is_valid< T > Class Template Reference

#include <CGAL/utils_classes.h>


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:


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