110078     DFWFT: Discrete Fast Walsh-Fourier Transform Subroutine
Version: March 1973
Author: Urs R. Wyss and Reto Bardola, Institut fuer Hirnforschung,
University of Zurich, Switzerland
Submitted by: Urs R. Wyss, Institut fuer Hirnforschung, Switzerland
Operating System: DOS/BATCH V004A  Source Language: PAL-11R  Keywords:
Mathematical, Scientific Applications
Abstract: DFWFT is a subroutine written for the PDP-11/20 for
performing a forward or inverse Discrete Fast
Walsh-Fourier Transform of N real data elements, where N
is a power of 2 in the range of 8 less than or equal to
N less than or equal to 16384. A sample size of 1024 elements
is transformed in 357 msec (0.357 sec). 560 words of core
storage is required for the control section (subroutine),
and N words for the data section. The source module is written for the
DOS-11 environment, minor changes are required for a
paper tape system. DFWFT may be invoked as a FORTRAN
Media (Service Charge Code): Write-Up and Listing (DA), One RX01
Diskette (KA)  Format: RT-11, 600' Magnetic Tape (MA)  Format: DOS-11

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