/* SCCS - %W% - %G% - %U% */ // Copyright: Copyright (c) 1997 University of Southern California Brain Project. // Copyright: This software may be freely copied provided the toplevel // Copyright: COPYRIGHT file is included with each such copy. // Copyright: Email nsl@java.usc.edu. //////////////////////////////////////////////////////////// // // Step threshold routines // // /** Step threshold routines. There are four basic format for the evaluation method in this routine: 1, eval(a) -> c a is the input parameter to pass the threshold function: if a < 0, c = 0, else c = 1. 2. eval(dest, a) -> c a is the parameter of the threshold function and dest is the temporary space to hold the result. The method returns the reference to dest. 3. eval(a, kx1, ky1, ky2) -> c if a < kx1, c = ky1, else, c = ky2. 2. eval(dest, a, kx1, ky1, ky2) -> c a is the parameter of the threshold function and dest is the temporary space to hold the result. The method returns the reference to dest. */ //////////////////////////////////////////////////////////////////////////////// // step functions package nslj.src.math; import nslj.src.lang.*; public final class NslStep { // doubles private static double value(double x, double kx1, double ky1, double ky2) { if (x