/// <summary> Does an OR operation between two BigInteger instances.
/// </summary>
/// <remarks>Each BigInteger instance is treated as a two's complement
/// representation for the purposes of this operator.</remarks>
/// <returns>A BigInteger object.</returns>
/// <param name='first'>A BigInteger object.</param>
/// <param name='second'>A BigInteger object.</param>
public static BigInteger Or(BigInteger first, BigInteger second){
if((first)==null)throw new ArgumentNullException("first");
if((second)==null)throw new ArgumentNullException("second");
BigInteger xa=new BigInteger().Allocate(first.wordCount);
Array.Copy(first.reg,xa.reg,xa.reg.Length);
BigInteger xb=new BigInteger().Allocate(second.wordCount);
Array.Copy(second.reg,xb.reg,xb.reg.Length);
xa.negative=first.negative;
xa.wordCount=first.wordCount;
xb.negative=second.negative;
xb.wordCount=second.wordCount;
xa.reg=CleanGrow(xa.reg,Math.Max(xa.reg.Length,xb.reg.Length));
xb.reg=CleanGrow(xb.reg,Math.Max(xa.reg.Length,xb.reg.Length));
if(xa.Sign<0){ TwosComplement(xa.reg,0,(int)xa.reg.Length); }
if(xb.Sign<0){ TwosComplement(xb.reg,0,(int)xb.reg.Length); }
xa.negative|=(xb.Sign<0);
OrWords((xa.reg),(xa.reg),(xb.reg),(int)xa.reg.Length);
if(xa.Sign<0){ TwosComplement(xa.reg,0,(int)xa.reg.Length); }
xa.wordCount=xa.CalcWordCount();
if(xa.wordCount==0)xa.negative=false;
return xa;
}
/// <summary> </summary>
/// <param name='a'>A BigInteger instance.</param>
/// <param name='b'>Another BigInteger instance.</param>
/// <remarks>Each BigInteger instance is treated as a two's complement
/// representation for the purposes of this operator.</remarks>
/// <returns>A BigInteger object.</returns>
public static BigInteger Xor(BigInteger a, BigInteger b){
if((a)==null)throw new ArgumentNullException("a");
if((b)==null)throw new ArgumentNullException("b");
BigInteger xa=new BigInteger().Allocate(a.wordCount);
Array.Copy(a.reg,xa.reg,xa.reg.Length);
BigInteger xb=new BigInteger().Allocate(b.wordCount);
Array.Copy(b.reg,xb.reg,xb.reg.Length);
xa.negative=a.negative;
xa.wordCount=a.wordCount;
xb.negative=b.negative;
xb.wordCount=b.wordCount;
xa.reg=CleanGrow(xa.reg,Math.Max(xa.reg.Length,xb.reg.Length));
xb.reg=CleanGrow(xb.reg,Math.Max(xa.reg.Length,xb.reg.Length));
if(xa.Sign<0){ TwosComplement(xa.reg,0,(int)xa.reg.Length); }
if(xb.Sign<0){ TwosComplement(xb.reg,0,(int)xb.reg.Length); }
xa.negative^=(xb.Sign<0);
XorWords((xa.reg),(xa.reg),(xb.reg),(int)xa.reg.Length);
if(xa.Sign<0){ TwosComplement(xa.reg,0,(int)xa.reg.Length); }
xa.wordCount=xa.CalcWordCount();
if(xa.wordCount==0)xa.negative=false;
return xa;
}
/// <summary> Returns a BigInteger with every bit flipped. </summary>
/// <param name='a'>A BigInteger object.</param>
/// <returns>A BigInteger object.</returns>
public static BigInteger Not(BigInteger a){
if((a)==null)throw new ArgumentNullException("a");
BigInteger xa=new BigInteger().Allocate(a.wordCount);
Array.Copy(a.reg,xa.reg,xa.reg.Length);
xa.negative=a.negative;
xa.wordCount=a.wordCount;
if(xa.Sign<0){ TwosComplement(xa.reg,0,(int)xa.reg.Length); }
xa.negative=!(xa.Sign<0);
NotWords((xa.reg),(int)xa.reg.Length);
if(xa.Sign<0){ TwosComplement(xa.reg,0,(int)xa.reg.Length); }
xa.wordCount=xa.CalcWordCount();
if(xa.wordCount==0)xa.negative=false;
return xa;
}
