.sp
.LP
These routines are use to go to and from the Fourier Domain
and perform operations in the Fourier Domain.
.SH
SHORT DESCRIPTION OF ROUTINES
.IP "Forward 1D FFT -" 20
Compute the forward 1D Discrete Fourier Transform.
.IP "Inverse 1D FFT -" 20
Compute the inverse 1D Discrete Fourier Transform.
.IP "Forward 1D Hartley -" 20
Perform the 1D forward Hartley transform of a data sequence.
.IP "Inverse 1D Hartley -" 20
Perform the 1D inverse Hartley transform of a data sequence.
.IP "1D Hadamard -" 20
Performs the forward and inverse 1D Hadamard transforms of a data sequence.
.IP "1D Mag, Power, Phase -" 20
Calculate magnitude, power, or phase of 1D signal(s).

