61 lines
1.3 KiB
C#
61 lines
1.3 KiB
C#
using System;
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namespace hwo.bitworks
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{
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public class ADDX : MultipleBitsSource
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{
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LogicBase[] srcA,srcB;
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ADD[] add;
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public ADDX(LogicBase[] sourcesA,LogicBase[] sourcesB)
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{
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int l = sourcesA.Length > sourcesB.Length ? sourcesA.Length : sourcesB.Length;
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srcA = new LogicBase[l];
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srcB = new LogicBase[l];
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add = new ADD[l];
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Array.Copy(sourcesA,srcA,sourcesA.Length);
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Array.Copy(sourcesB,srcB,sourcesB.Length);
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for (int n=sourcesA.Length; n < l; n++){
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srcA[n] = Constants.ZERO;
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}
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for (int n=sourcesB.Length; n < l; n++){
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srcB[n] = Constants.ZERO;
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}
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LogicBase lb = Constants.ZERO;
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for (int n=0;n<add.Length;n++){
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add[n] = new ADD(srcA[n],srcB[n],lb);
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lb = add[n].getLogicalBase(1);
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}
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}
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public override int getBits()
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{
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return add.Length + 1;
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}
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public override bool bitValue(int bit)
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{
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if (bit > add.Length){
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throw new IndexOutOfRangeException(String.Format("ADDX supplies {0} bits, but bit #{1} requested",add.Length+1,bit));
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} else if (bit == add.Length){
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return add[bit-1].bitValue(1);
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} else {
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return add[bit].bitValue(0);
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}
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}
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public override identity.BitIdentity getBitIdentity(int bit){
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if (bit == add.Length){
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return add[bit-1].getBitIdentity(1);
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} else {
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return add[bit].getBitIdentity(0);
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}
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}
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}
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}
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