public static IntegerNumber operator <<(IntegerNumber x, int shift)
{
if (shift == 0)
{
return(x);
}
if (shift < 0)
{
return(x >> (-shift));
}
int xlen = x.RealDigits;
int resultDigits = xlen + (shift >> 6);
int singleDigitShift = shift & 63;
if (singleDigitShift != 0)
{
long hix = (long)x.bits[xlen - 1] >> (63 - singleDigitShift);
if (hix != 0L && hix != -1L)
{
resultDigits++;
}
}
ulong[] result = x.bits;
ExtendToExact(ref result, resultDigits, true);
AsmX64Operations.IntShl(result, shift, resultDigits);
return(new IntegerNumber(result, false));
}
