/// <summary>
/// Set bits to desired boolean value.
/// </summary>
/// <param name="pos">Position in bit array.</param>
/// <param name="value">Value of bits to set.</param>
/// <param name="numBits">Number of bits to set.</param>
public void SetBits(int pos, bool value, int numBits)
{
CheckArgs(pos, numBits);
var end = math.min(pos + numBits, Length);
var idxB = pos >> 6;
var shiftB = pos & 0x3f;
var idxE = (end - 1) >> 6;
var shiftE = end & 0x3f;
var maskB = 0xfffffffffffffffful << shiftB;
var maskE = 0xfffffffffffffffful >> (64 - shiftE);
var orBits = (ulong)-Bitwise.FromBool(value);
var orBitsB = maskB & orBits;
var orBitsE = maskE & orBits;
var cmaskB = ~maskB;
var cmaskE = ~maskE;
if (idxB == idxE)
{
var maskBE = maskB & maskE;
var cmaskBE = ~maskBE;
var orBitsBE = orBitsB & orBitsE;
Ptr[idxB] = (Ptr[idxB] & cmaskBE) | orBitsBE;
return;
}
Ptr[idxB] = (Ptr[idxB] & cmaskB) | orBitsB;
for (var idx = idxB + 1; idx < idxE; ++idx)
{
Ptr[idx] = orBits;
}
Ptr[idxE] = (Ptr[idxE] & cmaskE) | orBitsE;
}
/// <summary>
/// Set single bit to desired boolean value.
/// </summary>
/// <param name="pos">Position in bit array.</param>
/// <param name="value">Value of bits to set.</param>
public void Set(int pos, bool value)
{
CheckArgs(pos, 1);
var idx = pos >> 6;
var shift = pos & 0x3f;
var mask = 1ul << shift;
var bits = (Ptr[idx] & ~mask) | ((ulong)-Bitwise.FromBool(value) & mask);
Ptr[idx] = bits;
}