BitMaskSet

Description

Performs a bitwise mask set operation.

Returns

A number, bitwise masked with length bits of mask beginning at start.

Category

Mathematical functions

Function syntax

BitMaskSet(number, mask, start, length)

See also

BitMaskClearBitMaskRead

Parameters

Parameter

Description

number

32-bit signed integer

mask

32-bit signed integer; mask

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>BitMaskSet Example</h3>
<p>Returns number bitwise masked with length bits of mask beginning at start.</p>

<p>BitMaskSet(255, 255, 4, 4): <cfoutput>#BitMaskSet(255, 255, 4, 4)#</cfoutput></p>
<p>BitMaskSet(255, 0, 4, 4): <cfoutput>#BitMaskSet(255, 0, 4, 4)#</cfoutput></p>
<p>BitMaskSet(0, 15, 4, 4): <cfoutput>#BitMaskSet(0, 15, 4, 4)#</cfoutput></p>

Example

<cfscript>
  number = 0 ;
  mask = 15 ;
  start = 4;
  length = 4;
  writeOutput(bitmaskset(number, mask, start, length)) ;
</cfscript> 
Adobe logo

Sign in to your account