Functions
function	rfft1b (n::Integer, r::Array{Float64}, wsave::Array{Float64}, inc::Integer=1)
	One-dimensional real fast Fourier backward transform

function	rfft1f (n::Integer, r::Array{Float64}, wsave::Array{Float64}, inc::Integer=1)
	One-dimensional real Fourier transform

function	rfft1i (n::Integer, wsave::Array{Float64})
	Initialization of work data for rfft1f and rfft1b

Detailed Description

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

Functions