BitMaskClear  
Description
Performs a bitwise mask clear operation.
 
Returns
A number, bitwise cleared, with length bits beginning at start.
 
Category
Mathematical functions
 
Function syntax
BitMaskClear(number, start, length)
 
See also
BitMaskRead, BitMaskSet
 
Parameters
 
Parameter      Description
number 32-bit signed integer
start Integer, in the range 0-31, inclusive; start bit for mask
length Integer, in the range 0-31, inclusive; length of mask
 
Usage
Bit functions operate on 32-bit signed integers, in the range -2147483648 - 2147483647.
 
Example
<h3>BitMaskClear Example</h3>

<p>Returns number bitwise cleared with length bits beginning from start.

<p>BitMaskClear(255, 4, 4): <cfoutput>#BitMaskClear(255, 4, 4)#
</cfoutput>
<p>BitMaskClear(255, 0, 4): <cfoutput>#BitMaskClear(255, 0, 4)#
</cfoutput>
<p>BitMaskClear(128, 0, 7): <cfoutput>#BitMaskClear(128, 0, 7)#
</cfoutput>
number  
32-bit signed integer
start  
Integer, in the range 0-31, inclusive; start bit for mask
length  
Integer, in the range 0-31, inclusive; length of mask