lel-transform-329"></a>In this chapter we document the parallel FFTW routines for
shared-memory parallel hardware.  These routines, which support
parallel one- and multi-dimensional transforms of both real and
complex data, are the easiest way to take advantage of multiple
processors with FFTW.  They work just like the corresponding
uniprocessor transform routines, except that you have an extra
initialization routine to call, and there is a routine to set the
number of threads to employ.  Any program that u