J1. Trigonometric transforms including fast Fourier transforms

Functions
def	rfft1b (n, r, wsave, inc=1)
	One-dimensional real fast Fourier backward transform
def	rfft1f (n, r, wsave, inc=1)
	One-dimensional real Fourier transform
def	rfft1i (n, wsave)
	Initialization of work data for rfft1f and rfft1b

Detailed Description

This is the group of J1. Trigonometric transforms including fast Fourier transforms.