Helper SpecialHelper

Jan Burse, created Mar 09. 2019
package jekmin.frequent.decimal;
import jekpro.model.inter.AbstractSpecial;
import jekpro.model.inter.Engine;
import jekpro.model.molec.BindUniv;
import jekpro.model.molec.Display;
* <p>Provides some constants.</p>
* <p/>
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public class SpecialHelper extends AbstractSpecial {
private final static int EVALUABLE_LOG2 = 0;
private final static int EVALUABLE_LOG10 = 1;
public static final Double DOUBLE_LOG2 = Double.valueOf(Math.log(2));
public static final Double DOUBLE_LOG10 = Double.valueOf(Math.log(10));
* <p>Create a constant evaluable.</p>
* @param i The built-in ID.
public SpecialHelper(int i) {
subflags |= MASK_DELE_ARIT;
* <p>Arithmetically evaluate an evaluable.</p>
* <p>The evaluable is passed via the skel and display of the engine.</p>
* <p>The continuation is passed via the contskel and contdisplay of the engine.</p>
* <p>The result is passed via the skel and display of the engine.</p>
* @param en The engine.
public final void moniEvaluate(Engine en) {
switch (id) {
en.skel = DOUBLE_LOG2;
en.display = Display.DISPLAY_CONST;
en.skel = DOUBLE_LOG10;
en.display = Display.DISPLAY_CONST;
throw new IllegalArgumentException(OP_ILLEGAL_SPECIAL);