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/*****************************************************************************/
// Copyright 2006 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in
// accordance with the terms of the Adobe license agreement accompanying it.
/*****************************************************************************/
/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_rational.cpp#1 $ */
/* $DateTime: 2012/05/30 13:28:51 $ */
/* $Change: 832332 $ */
/* $Author: tknoll $ */
/*****************************************************************************/
#include "dng_rational.h"
#include "dng_utils.h"
/*****************************************************************************/
real64 dng_srational::As_real64 () const
{
if (d)
return (real64) n / (real64) d;
else
return 0.0;
}
/*****************************************************************************/
void dng_srational::Set_real64 (real64 x, int32 dd)
{
if (x == 0.0)
{
*this = dng_srational (0, 1);
}
if (dd == 0)
{
real64 y = Abs_real64 (x);
if (y >= 32768.0)
{
dd = 1;
}
else if (y >= 1.0)
{
dd = 32768;
}
else
{
dd = 32768 * 32768;
}
}
*this = dng_srational (Round_int32 (x * dd), dd);
}
/*****************************************************************************/
void dng_srational::ReduceByFactor (int32 factor)
{
while (n % factor == 0 &&
d % factor == 0 &&
d >= factor)
{
n /= factor;
d /= factor;
}
}
/*****************************************************************************/
real64 dng_urational::As_real64 () const
{
if (d)
return (real64) n / (real64) d;
else
return 0.0;
}
/*****************************************************************************/
void dng_urational::Set_real64 (real64 x, uint32 dd)
{
if (x <= 0.0)
{
*this = dng_urational (0, 1);
}
if (dd == 0)
{
if (x >= 32768.0)
{
dd = 1;
}
else if (x >= 1.0)
{
dd = 32768;
}
else
{
dd = 32768 * 32768;
}
}
*this = dng_urational (Round_uint32 (x * dd), dd);
}
/*****************************************************************************/
void dng_urational::ReduceByFactor (uint32 factor)
{
while (n % factor == 0 &&
d % factor == 0 &&
d >= factor)
{
n /= factor;
d /= factor;
}
}
/*****************************************************************************/
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