38 lines
895 B
C++
38 lines
895 B
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1997.
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//
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// File: MISC.HXX
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//
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// Contents: Miscellaneous helper functions and tiny classes
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//
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// History: 21-Jul-92 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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#pragma once
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//+---------------------------------------------------------------------------
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//
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// Function: Log2
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//
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// Synopsis: Calculates ceiling of binary log
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//
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// Arguments: [s]
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//
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// Returns: Number of binary digits in [s]
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//
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// History: 21-Jul-92 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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inline unsigned Log2 ( unsigned long s )
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{
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for ( unsigned iLog2 = 0; s != 0; iLog2++ )
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s >>= 1;
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return(iLog2);
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}
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