BitArray bits=new BitArray(16); // size 16-bit
There is bitArray and I want to convert 16-bit from this array to unsigned integer in c# ,
I can not use copyto for convert, is there other method for convert from 16-bit to UInt16?
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4 Answers
You can do it like this:
UInt16 res = 0;
for (int i = 0 ; i < 16 ; i++) {
if (bits[i]) {
res |= (UInt16)(1 << i);
}
}
This algorithm checks the 16 least significant bits one by one, and uses the bitwise OR operation to set the corresponding bit of the result.
answered Dec 17, 2013 at 15:32
Sergey Kalinichenko
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4 Comments
user2922938
res |= (1 << i); can not convert integer(i) to UInt16 (res) ??
Sergey Kalinichenko
@user2922938 Oops, I forgot to add a cast. This should work after the edit.
user2922938
plz i am beginner in c# can you explain more,what is (cast)?
Sergey Kalinichenko
@user2922938 I added
(uint16) in front of (1 << i) to tell C# that the expression needs to be converted to uint16 before using it in an OR.You can loop through it and compose the value itself.
var bits = new BitArray(16);
bits[1] = true;
var value = 0;
for (int i = 0; i < bits.Length; i++)
{
if (lBits[i])
{
value |= (1 << i);
}
}
Comments
This should do the work
private uint BitArrayToUnSignedInt(BitArray bitArray)
{
ushort res = 0;
for(int i= bitArray.Length-1; i != 0;i--)
{
if (bitArray[i])
{
res = (ushort)(res + (ushort) Math.Pow(2, bitArray.Length- i -1));
}
}
return res;
}
Comments
You can check this another anwser already in stackoverflow of that question:
1 Comment
Mauricio Gracia Gutierrez
That example uses COPYTO and he cannot use that as mentioned in the question