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 287 of file utility.h.

Member Function Documentation

apply()

template<int N, typename T >

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

inlinestatic

Definition at line 288 of file utility.h.

References libMesh::libmesh_assert().

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

  {
    libmesh_assert(N>1);

    if (N%2) // odd exponent
      return x * do_pow<N-1,T>::apply(x);

    const T xNover2 = do_pow<N/2,T>::apply(x);

    return xNover2*xNover2;
  }

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

• include/utils/utility.h