libMesh::Utility::do_pow< N, T > Struct Template Reference

#include <utility.h>

Static Public Member Functions

static T apply (const T &x)
 

Detailed Description

template<int N, typename T>
struct libMesh::Utility::do_pow< N, T >

An efficient template instantiation for raising to an arbitrary integer power.

Definition at line 153 of file utility.h.

Member Function Documentation

template<int N, typename T >
static T libMesh::Utility::do_pow< N, T >::apply ( const T &  x)
inlinestatic

Definition at line 154 of file utility.h.

References libMesh::libmesh_assert().

Referenced by libMesh::Utility::pow().

155  {
156  libmesh_assert(N>1);
157 
158  if (N%2) // odd exponent
159  return x * do_pow<N-1,T>::apply(x);
160 
161  const T xNover2 = do_pow<N/2,T>::apply(x);
162 
163  return xNover2*xNover2;
164  }

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

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Last modified: February 07 2014 16:57:34 UTC

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