Fast fourier transform derived from the Numerical Recipes in C routine.
static tmp< complexField > reverseTransform(const tmp< complexField > &field, const labelList &nn)
static tmp< complexField > forwardTransform(const tmp< complexField > &field, const labelList &nn)
Pre-declare SubField and related Field type.
static void transform(complexField &field, const labelList &nn, transformDirection fftDirection)
A class for managing temporary objects.