Hartley Transform

Collaboration diagram for Hartley Transform:

Functions
int	DiscreteHartleyTransform (double Data[], double *ScratchBuffer, double CaS[], long SignalLength, int Forward)

Detailed Description

Function Documentation

DiscreteHartleyTransform()

int DiscreteHartleyTransform	(	double	Data[],
		double *	ScratchBuffer,
		double	CaS[],
		long	SignalLength,
		int	Forward
	)

Discrete Hartley transform of a real signal.

The input signal is given by Data (double). The computation is in-place (the output replaces the input).

ScratchBuffer is a pre-allocated workspace of size SignalLength. The values returned in ScratchBuffer are meaningless.

CaS is an input array of coefficients of size SignalLength (see GetCaS function). CaS is modified internally, but is restored when DHT returns.

SignalLength is the length of the signal. No restriction on SignalLength, but best efficiency for radix 2, 3, 4, 5.

Performs a DHT transform when (Forward == TRUE). Performs an inverse DHT transform when (Forward == FALSE).

success: return(!ERROR); failure: return(ERROR);