1 /*****************************************************************************/ 2 // Copyright 2006 Adobe Systems Incorporated 3 // All Rights Reserved. 4 // 5 // NOTICE: Adobe permits you to use, modify, and distribute this file in 6 // accordance with the terms of the Adobe license agreement accompanying it. 7 /*****************************************************************************/ 8 9 /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_rational.h#2 $ */ 10 /* $DateTime: 2012/07/31 22:04:34 $ */ 11 /* $Change: 840853 $ */ 12 /* $Author: tknoll $ */ 13 14 /** \file 15 * Signed and unsigned rational data types. 16 */ 17 18 /*****************************************************************************/ 19 20 #ifndef __dng_rational__ 21 #define __dng_rational__ 22 23 /*****************************************************************************/ 24 25 #include "dng_types.h" 26 27 /*****************************************************************************/ 28 29 class dng_srational 30 { 31 32 public: 33 34 int32 n; // Numerator 35 int32 d; // Denominator 36 37 public: 38 dng_srational()39 dng_srational () 40 : n (0) 41 , d (0) 42 { 43 } 44 dng_srational(int32 nn,int32 dd)45 dng_srational (int32 nn, int32 dd) 46 : n (nn) 47 , d (dd) 48 { 49 } 50 Clear()51 void Clear () 52 { 53 n = 0; 54 d = 0; 55 } 56 IsValid()57 bool IsValid () const 58 { 59 return d != 0; 60 } 61 NotValid()62 bool NotValid () const 63 { 64 return !IsValid (); 65 } 66 67 bool operator== (const dng_srational &r) const 68 { 69 return (n == r.n) && 70 (d == r.d); 71 } 72 73 bool operator!= (const dng_srational &r) const 74 { 75 return !(*this == r); 76 } 77 78 real64 As_real64 () const; 79 80 void Set_real64 (real64 x, int32 dd = 0); 81 82 void ReduceByFactor (int32 factor); 83 84 }; 85 86 /*****************************************************************************/ 87 88 class dng_urational 89 { 90 91 public: 92 93 uint32 n; // Numerator 94 uint32 d; // Denominator 95 96 public: 97 dng_urational()98 dng_urational () 99 : n (0) 100 , d (0) 101 { 102 } 103 dng_urational(uint32 nn,uint32 dd)104 dng_urational (uint32 nn, uint32 dd) 105 : n (nn) 106 , d (dd) 107 { 108 } 109 Clear()110 void Clear () 111 { 112 n = 0; 113 d = 0; 114 } 115 IsValid()116 bool IsValid () const 117 { 118 return d != 0; 119 } 120 NotValid()121 bool NotValid () const 122 { 123 return !IsValid (); 124 } 125 126 bool operator== (const dng_urational &r) const 127 { 128 return (n == r.n) && 129 (d == r.d); 130 } 131 132 bool operator!= (const dng_urational &r) const 133 { 134 return !(*this == r); 135 } 136 137 real64 As_real64 () const; 138 139 void Set_real64 (real64 x, uint32 dd = 0); 140 141 void ReduceByFactor (uint32 factor); 142 143 }; 144 145 /*****************************************************************************/ 146 147 #endif 148 149 /*****************************************************************************/ 150