Functions
void	_rfft1b (int n, int inc, double r[], int lr, double wsave[], int lwsave, double work[], int lwork, int *info)
	One-dimensional real fast Fourier backward transform

void	_rfft1f (int n, int inc, double r[], int lr, double wsave[], int lwsave, double work[], int lwork, int *info)
	One-dimensional real Fourier transform

void	_rfft1i (int n, double wsave[], int lwsave, int *info)
	Initialization of work data for rfft1f and rfft1b

Detailed Description

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

Functions