BitMaskClear |
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Description
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Performs a bitwise mask clear operation.
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Returns
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A number, bitwise cleared, with length bits beginning at start.
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Category
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Mathematical functions
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Function syntax |
BitMaskClear(number, start, length)
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See also
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BitMaskRead, BitMaskSet
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Parameters
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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 |
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Usage
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Bit functions operate on 32-bit signed integers, in the range -2147483648 - 2147483647.
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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>
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