libMesh
Static Public Member Functions | List of all members
libMesh::Utility::do_pow< N, T > Struct Template Reference

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

#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 154 of file utility.h.

Member Function Documentation

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

Definition at line 155 of file utility.h.

References libMesh::libmesh_assert().

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

156  {
157  libmesh_assert(N>1);
158 
159  if (N%2) // odd exponent
160  return x * do_pow<N-1,T>::apply(x);
161 
162  const T xNover2 = do_pow<N/2,T>::apply(x);
163 
164  return xNover2*xNover2;
165  }
libmesh_assert(j)
PetscErrorCode Vec x
static T apply(const T &x)
Definition: utility.h:155

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