Author: Major Tom G. Purnhagen, Air Force Institute of Technology, Wright Patterson Air Force Base, Ohio

PWALSH and LWALSH are PDP-12 subroutines, written in PDP-8 mode and LINCmode respectively, which compute the "natural" Walsh transform of an N=2^K element array of data. As listed, the programs operate on an array of 256 points (K=8). Modification for different values of K is described in the program write-up.

Minimum Hardware: PWALSH: Any PDP-8 or PDP-12; LWALSH: Any PDP-12

Storage Requirement: 50-54 Locations, plus data and work area

Source Language: LAP-6/DIAL (PWALSH is com-patible with PAL III

Catalog: July 1974