Binary Opperations

 

Compatibilities:

Rating:

Director does not have proper bitshift left and right, binary to integer conversion or integer to binary string conversion. These handlers get around this.

--Copyright 2003, Chuck Neal --MediaMacros, Inc. on getBinary vNum, vDepth   if vDepth = void then vDepth = 32   baseNums = ["0","1"]   n = ""   neg = 0   if vnum < 0 then     neg = 1     vnum = integer(the maxInteger + 1.0 + vNum)   end if     vNum = integer(vNum)   repeat while vNum     nMod = vNum mod 2     put string(baseNums[nMod + 1]) before n     vNum = vNum / 2   end repeat   --add preceeding 0   repeat while n.char.count < vDepth - 1     put "0" before n   end repeat   if n.char.count < vDepth then    put neg before n     end if     return n end on getInt vBinary   baseNums = ["0","1"]   if vBinary.char[1] = "1" then negative = 1   nConverted = 0   nMax = vBinary.length   repeat with nIndex = 1 to nMax     nConverted = nConverted * 2     nConverted = nConverted + baseNums.getOne(vBinary.char[nIndex]) - 1   end repeat     return nConverted   end on bitShiftLeft vNum, vShift, vDepth   --return integer((vNum * (power(2,vShift))) - .5)   if vDepth = void then vDepth = 32   iBinary = getBinary(vNum, vDepth)   --get a positive value   vShift = min(32, abs(vShift))   nBinary = iBinary.char[(vShift + 1)..vDepth] --& iBinary.char[1..vShift]   --pad with zeros   repeat while nBinary.char.count < vDepth     put "0" after nBinary   end repeat      nNumber = getInt(nBinary)   return nNumber end on bitShiftRight vNum, VShift, vDepth   if vDepth = void then vDepth = 32   iBinary = getBinary(vNum, vDepth)   --get a positive value   vShift = min(vDepth, abs(vShift))   nBinary = iBinary.char[1..(vDepth - vShift)]   repeat while nBinary.char.count < vDepth     put nBinary.char[1] before nBinary     end repeat   nNumber = getInt(nBinary)   return nNumber end on bitShiftRightZeroFill vNum, vShift, vDepth   if vDepth = void then vDepth = 32   iBinary = getBinary(vNum, vDepth)   --get a positive value   vShift = min(vDepth, abs(vShift))   nBinary = iBinary.char[1..(vDepth - vShift)]   repeat while nBinary.char.count < vDepth   put "0" before nBinary     end repeat     nNumber = getInt(nBinary)   return nNumber end