summaryrefslogtreecommitdiff
path: root/noncore/unsupported/qpdf/fixed.h
Unidiff
Diffstat (limited to 'noncore/unsupported/qpdf/fixed.h') (more/less context) (ignore whitespace changes)
-rw-r--r--noncore/unsupported/qpdf/fixed.h169
1 files changed, 169 insertions, 0 deletions
diff --git a/noncore/unsupported/qpdf/fixed.h b/noncore/unsupported/qpdf/fixed.h
new file mode 100644
index 0000000..111b95e
--- a/dev/null
+++ b/noncore/unsupported/qpdf/fixed.h
@@ -0,0 +1,169 @@
1#ifndef __FIXED_H__
2#define __FIXED_H__
3
4#include <iostream>
5
6#define _GCC_TEMPLATE_BUG_ 1
7
8template <unsigned int SH> class fixed {
9public:
10 inline fixed ( int i = 0 ) : m_f ( i2f( i ) ) { }
11 inline fixed ( double d ) : m_f ( d2f( d )) { }
12 inline fixed ( const fixed &f ) : m_f ( f. m_f ) { }
13
14 inline operator bool ( ) const { return m_f != 0; }
15 inline operator double ( ) const { return f2d( m_f ); }
16 inline operator float ( ) const { return (float) f2d( m_f ); }
17 inline operator int ( ) const { return (int) f2i( m_f ); }
18
19 inline fixed &operator = ( const fixed &f ) { m_f = f. m_f; return *this; }
20 inline fixed &operator = ( double d ) { m_f = d2f( d ); return *this; }
21 inline fixed &operator = ( float f ) { m_f = d2f( f ); return *this; }
22 inline fixed &operator = ( int i ) { m_f = i2f( i ); return *this; }
23
24 inline fixed &operator += ( const fixed &f ) { m_f += f. m_f; return *this; }
25 inline fixed &operator -= ( const fixed &f ) { m_f -= f. m_f; return *this; }
26 inline fixed &operator *= ( const fixed &f ) { m_f = mul ( m_f, f. m_f ); return *this; }
27 inline fixed &operator /= ( const fixed &f ) { m_f = div ( m_f, f. m_f ); return *this; }
28
29 inline fixed &operator += ( int i ) { m_f += i2f( i ); return *this; }
30 inline fixed &operator -= ( int i ) { m_f -= i2f( i ); return *this; }
31 inline fixed &operator *= ( int i ) { m_f *= i; return *this; }
32 inline fixed &operator /= ( int i ) { m_f /= i; return *this; }
33
34 inline fixed &operator += ( double d ) { m_f += d2f( d ); return *this; }
35 inline fixed &operator -= ( double d ) { m_f -= d2f( d ); return *this; }
36 inline fixed &operator *= ( double d ) { m_f = mul ( m_f, d2f( d )); return *this; }
37 inline fixed &operator /= ( double d ) { m_f = div ( m_f, d2f( d )); return *this; }
38
39 inline fixed operator - ( ) const { return fixed ( -m_f, true ); }
40
41 inline fixed operator + ( const fixed &f ) const { return fixed ( m_f + f. m_f, true ); }
42 inline fixed operator - ( const fixed &f ) const { return fixed ( m_f - f. m_f, true ); }
43 inline fixed operator * ( const fixed &f ) const { return fixed ( mul ( m_f, f. m_f ), true ); }
44 inline fixed operator / ( const fixed &f ) const { return fixed ( div ( m_f, f. m_f ), true ); }
45
46 inline fixed operator + ( double d ) const { return fixed ( m_f + d2f( d ), true ); }
47 inline fixed operator - ( double d ) const { return fixed ( m_f - d2f( d ), true ); }
48 inline fixed operator * ( double d ) const { return fixed ( mul ( m_f, d2f( d )), true ); }
49 inline fixed operator / ( double d ) const { return fixed ( div ( m_f, d2f( d )), true ); }
50
51 inline fixed operator + ( int i ) const { return fixed ( m_f + i2f( i ), true ); }
52 inline fixed operator - ( int i ) const { return fixed ( m_f - i2f( i ), true ); }
53 inline fixed operator * ( int i ) const { return fixed ( m_f * i, true ); }
54 inline fixed operator / ( int i ) const { return fixed ( m_f / i, true ); }
55
56 inline bool operator < ( const fixed &f ) const { return m_f < f. m_f; }
57 inline bool operator > ( const fixed &f ) const { return m_f > f. m_f; }
58 inline bool operator <= ( const fixed &f ) const { return m_f <= f. m_f; }
59 inline bool operator >= ( const fixed &f ) const { return m_f >= f. m_f; }
60 inline bool operator == ( const fixed &f ) const { return m_f == f. m_f; }
61 inline bool operator != ( const fixed &f ) const { return m_f != f. m_f; }
62
63 inline bool operator < ( double d ) const { return m_f < d2f( d ); }
64 inline bool operator > ( double d ) const { return m_f > d2f( d ); }
65 inline bool operator <= ( double d ) const { return m_f <= d2f( d ); }
66 inline bool operator >= ( double d ) const { return m_f >= d2f( d ); }
67 inline bool operator == ( double d ) const { return m_f == d2f( d ); }
68 inline bool operator != ( double d ) const { return m_f != d2f( d ); }
69
70 inline bool operator < ( int i ) const { return m_f < i2f( i ); }
71 inline bool operator > ( int i ) const { return m_f > i2f( i ); }
72 inline bool operator <= ( int i ) const { return m_f <= i2f( i ); }
73 inline bool operator >= ( int i ) const { return m_f >= i2f( i ); }
74 inline bool operator == ( int i ) const { return m_f == i2f( i ); }
75 inline bool operator != ( int i ) const { return m_f != i2f( i ); }
76
77#if _GCC_TEMPLATE_BUG_
78public:
79#else
80private:
81#endif
82 typedef int fix_t;
83
84 inline static double f2d ( fix_t f ) { return ((double) f ) / ((double) ( 1 << SH )); }
85 inline static fix_t d2f ( double d ) { return (fix_t) ( d * ((double) ( 1 << SH ))); }
86
87 inline static int f2i ( fix_t f ) { return (int) ( f >> SH ); }
88 inline static fix_t i2f ( int i ) { return (fix_t) ( i << SH ); }
89
90 inline static fix_t mul ( fix_t m1, fix_t m2 ) { return (fix_t) ((((long long int) m1 ) * m2 ) >> SH ); }
91 inline static fix_t div ( fix_t d1, fix_t d2 ){ return (fix_t) ((((long long int) d1 ) << SH ) / d2 ); }
92
93 fixed ( fix_t f, bool /*dummy*/ ) : m_f ( f ) { }
94
95 //data
96 fix_t m_f;
97
98 // friends:
99#if !_GCC_TEMPLATE_BUG_
100 friend fixed operator + <> ( int i, const fixed &f );
101 friend fixed operator - <> ( int i, const fixed &f );
102 friend fixed operator * <> ( int i, const fixed &f );
103 friend fixed operator / <> ( int i, const fixed &f );
104
105 friend fixed operator + <> ( double d, const fixed &f );
106 friend fixed operator - <> ( double d, const fixed &f );
107 friend fixed operator * <> ( double d, const fixed &f );
108 friend fixed &operator / <> ( double d, const fixed<SH> &f );
109
110 friend bool operator < <> ( double d, const fixed &f );
111 friend bool operator > <> ( double d, const fixed &f );
112 friend bool operator <= <> ( double d, const fixed &f );
113 friend bool operator >= <> ( double d, const fixed &f );
114 friend bool operator == <> ( double d, const fixed &f );
115 friend bool operator != <> ( double d, const fixed &f );
116
117 friend bool operator < <> ( int i, const fixed &f );
118 friend bool operator > <> ( int i, const fixed &f );
119 friend bool operator <= <> ( int i, const fixed &f );
120 friend bool operator >= <> ( int i, const fixed &f );
121 friend bool operator == <> ( int i, const fixed &f );
122 friend bool operator != <> ( int i, const fixed &f );
123#endif
124};
125
126
127template <unsigned int SH> inline fixed<SH> operator + ( int i, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::i2f( i ) + f. m_f, true ); }
128template <unsigned int SH> inline fixed<SH> operator - ( int i, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::i2f( i ) - f. m_f, true ); }
129template <unsigned int SH> inline fixed<SH> operator * ( int i, const fixed<SH> &f ) { return fixed<SH> ( i * f. m_f, true ); }
130template <unsigned int SH> inline fixed<SH> operator / ( int i, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::div ( fixed<SH>::i2f( i ), f. m_f ), true ); }
131//template <unsigned int SH> inline fixed<SH> operator / ( int i, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::i2f ( i / fixed<SH>::f2i ( f. m_f )), true ); }
132
133template <unsigned int SH> inline fixed<SH> operator + ( double d, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::d2f( d ) + f. m_f, true ); }
134template <unsigned int SH> inline fixed<SH> operator - ( double d, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::d2f( d ) - f. m_f, true ); }
135template <unsigned int SH> inline fixed<SH> operator * ( double d, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::mul ( fixed<SH>::d2f( d ), f. m_f ), true ); }
136template <unsigned int SH> inline fixed<SH> operator / ( double d, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::mul ( fixed<SH>::d2f( d ), f. m_f ), true ); }
137
138template <unsigned int SH> inline bool operator < ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) < f. m_f; }
139template <unsigned int SH> inline bool operator > ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) > f. m_f; }
140template <unsigned int SH> inline bool operator <= ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) <= f. m_f; }
141template <unsigned int SH> inline bool operator >= ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) >= f. m_f; }
142template <unsigned int SH> inline bool operator == ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) == f. m_f; }
143template <unsigned int SH> inline bool operator != ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) != f. m_f; }
144
145template <unsigned int SH> inline bool operator < ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) < f. m_f; }
146template <unsigned int SH> inline bool operator > ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) > f. m_f; }
147template <unsigned int SH> inline bool operator <= ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) <= f. m_f; }
148template <unsigned int SH> inline bool operator >= ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) >= f. m_f; }
149template <unsigned int SH> inline bool operator == ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) == f. m_f; }
150template <unsigned int SH> inline bool operator != ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) != f. m_f; }
151
152
153template <unsigned int SH> inline fixed<SH> sqrt ( const fixed<SH> &f )
154{
155 return fixed<SH> ( double( sqrt ( double( f ))));
156}
157
158template <unsigned int SH> inline fixed<SH> fabs ( const fixed<SH> &f )
159{
160 return ( f < 0 ) ? -f : f;
161}
162
163template <unsigned int SH> inline ostream &operator << ( ostream &o, const fixed<SH> &f )
164{
165 o << double( f );
166 return o;
167}
168
169#endif