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44 lines
810 B
44 lines
810 B
5 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include <stdafx.h>
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static double beginTime;
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double I_FloatTime( void )
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{
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static double freq = 0.0;
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static __int64 firstCount;
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__int64 curCount;
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if (freq == 0.0)
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{
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__int64 perfFreq;
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QueryPerformanceFrequency( (LARGE_INTEGER*)&perfFreq );
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QueryPerformanceCounter( (LARGE_INTEGER*)&firstCount );
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freq = 1.0 / (double)perfFreq;
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}
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QueryPerformanceCounter ( (LARGE_INTEGER*)&curCount );
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curCount -= firstCount;
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double time = (double)curCount * freq;
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return time;
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}
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void I_BeginTime( void )
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{
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beginTime = I_FloatTime();
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}
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double I_EndTime( void )
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{
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return ( I_FloatTime() - beginTime );
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}
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