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✏️ Editing: ImfRational.h

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2006, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
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// *       Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// *       Redistributions in binary form must reproduce the above
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// in the documentation and/or other materials provided with the
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// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission. 
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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///////////////////////////////////////////////////////////////////////////

#ifndef INCLUDED_IMF_RATIONAL_H
#define INCLUDED_IMF_RATIONAL_H

#include "ImfExport.h"
#include "ImfNamespace.h"

//-----------------------------------------------------------------------------
//
//	Rational numbers
//
//	A rational number is represented as pair of integers, n and d.
//	The value of of the rational number is
// 
//		n/d			for d > 0
//		positive infinity	for n > 0, d == 0
//		negative infinity	for n < 0, d == 0
//		not a number (NaN)	for n == 0, d == 0
//
//-----------------------------------------------------------------------------

OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER

class IMF_EXPORT Rational
{
  public:

int			n;		// numerator
    unsigned int	d;		// denominator

//----------------------------------------
    // Default constructor, sets value to zero
    //----------------------------------------

Rational (): n (0), d (1) {}

//-------------------------------------
    // Constructor, explicitly sets n and d
    //-------------------------------------

Rational (int n, int d): n (n), d (d) {}

//----------------------------
    // Constructor, approximates x
    //----------------------------

explicit Rational (double x);

//---------------------------------
    // Approximate conversion to double
    //---------------------------------

operator double () const {return double (n) / double (d);}
};

OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT

#endif

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