blitz-research
59 lines
1.6 KiB
HTML
59 lines
1.6 KiB
HTML
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<title>Blitz3D Docs</title>
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<link rel=stylesheet href=../css/commands.css type=text/css>
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<h1>Shr repetitions</h1>
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<h1>Parameters</h1>
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repetitions = number of shifts to make right
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<h1>Description</h1>
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This performs a left binary shift on the value the specified number of times. This basically is a faster method of dividing the value exponentially. By shifting right once, you are dividing the value by 2. By shifting right twice, you divide by 4, etc.
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The usefulness of this command is basically faster math execution.
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<h1><a href=../2d_examples/Shr.bb>Example</a></h1>
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; shl, shr, sar examples
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value = 100
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; multiple x 2
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Print "Shift 1 bit left; Value = " + value Shl 1
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; multiple x 4
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Print "Shift 2 bits left; Value = " + value Shl 2
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; multiple x 16
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Print "Shift 4 bits left; Value = " + value Shl 4
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; divide by 2
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Print "Shift 1 bit right; Value = " + value Shr 1
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; divide by 4
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Print "Shift 2 bits right; Value = " + value Shr 2
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; divide by 16
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Print "Shift 4 bits right; Value = " + value Shr 4
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Print "Shift by SAR 4 times = " + value Sar 4
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WaitKey()
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</td>
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</table>
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<br>
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<a target=_top href=../index.htm>Index</a><br>
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<br>
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Click <a href=http://www.blitzbasic.co.nz/b3ddocs/command.php?name=Shr&ref=comments target=_blank>here</a> to view the latest version of this page online</body>
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