Invert< 2 > Class Reference

#include <Dinv.hh>

Static Public Member Functions
template<class Matrix >
static bool	Dinv (Matrix &rhs)

Detailed Description

Invert<2>. $2\times2$ (sub-)matrix. Use Cramers rule.

Author

T. Glebe

Member Function Documentation

Dinv()

template<class Matrix >

static bool Invert< 2 >::Dinv ( Matrix &  rhs )

inlinestatic

                                {
 
    typename Matrix::value_type* a = rhs.Array();
    typename Matrix::value_type det = a[0] * a[3] - a[2] * a[1];
    
    if (det == 0.) { return false; }
 
    typename Matrix::value_type s = 1. / det;
    typename Matrix::value_type c11 = s * a[3];
 
    a[2] = -s * a[2];
    a[1] = -s * a[1];
    a[3] =  s * a[0];
    a[0] = c11;
    return true;
  }

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

• src/libVt++/smatrix/include/Dinv.hh