dg::ISNSANE< T > Struct Template Reference

\( f(x) =\begin{cases} \mathrm{true\ if}\ |x| > 10^{100}\\ \mathrm{false\ else} \end{cases}\) More...

Public Member Functions
bool	operator() (T x)

Detailed Description

template<class T>
struct dg::ISNSANE< T >

\( f(x) =\begin{cases} \mathrm{true\ if}\ |x| > 10^{100}\\ \mathrm{false\ else} \end{cases}\)

Also return true if x is NaN or Inf. The intention is to use this in the reduce function to debug code if you get an error message of Inf or Nan from the dot function

//Check if a vector contains is sane
thrust::device_vector<double> x( 100);
bool hasnan = dg::blas1::reduce( x, false, thrust::logical_or<bool>(),
    dg::ISNSANE<double>());
std::cout << "x contains insane numbers "<<std::boolalpha<<hasnan<<"\n";

Member Function Documentation

operator()()

template<class T >

bool dg::ISNSANE< T >::operator() ( T  x )

inline

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The documentation for this struct was generated from the following file:

• functors.h