author | sandman <sandman> | 2002-04-13 00:47:20 (UTC) |
---|---|---|
committer | sandman <sandman> | 2002-04-13 00:47:20 (UTC) |
commit | 98a1e3f36567639344f12932b629e526a8783aa8 (patch) (unidiff) | |
tree | 0433d296857faceeafc54f7deabddb621f45a933 /noncore/unsupported/qpdf/fixed.h | |
parent | 7e31b1fba119f69929d6744d7295555ff1727f4f (diff) | |
download | opie-98a1e3f36567639344f12932b629e526a8783aa8.zip opie-98a1e3f36567639344f12932b629e526a8783aa8.tar.gz opie-98a1e3f36567639344f12932b629e526a8783aa8.tar.bz2 |
CVS import of QPdf
Diffstat (limited to 'noncore/unsupported/qpdf/fixed.h') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/unsupported/qpdf/fixed.h | 169 |
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 | |||
8 | template <unsigned int SH> class fixed { | ||
9 | public: | ||
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_ | ||
78 | public: | ||
79 | #else | ||
80 | private: | ||
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 | |||
127 | template <unsigned int SH> inline fixed<SH> operator + ( int i, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::i2f( i ) + f. m_f, true ); } | ||
128 | template <unsigned int SH> inline fixed<SH> operator - ( int i, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::i2f( i ) - f. m_f, true ); } | ||
129 | template <unsigned int SH> inline fixed<SH> operator * ( int i, const fixed<SH> &f ) { return fixed<SH> ( i * f. m_f, true ); } | ||
130 | template <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 | |||
133 | template <unsigned int SH> inline fixed<SH> operator + ( double d, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::d2f( d ) + f. m_f, true ); } | ||
134 | template <unsigned int SH> inline fixed<SH> operator - ( double d, const fixed<SH> &f ) { return fixed<SH> ( fixed<SH>::d2f( d ) - f. m_f, true ); } | ||
135 | template <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 ); } | ||
136 | template <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 | |||
138 | template <unsigned int SH> inline bool operator < ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) < f. m_f; } | ||
139 | template <unsigned int SH> inline bool operator > ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) > f. m_f; } | ||
140 | template <unsigned int SH> inline bool operator <= ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) <= f. m_f; } | ||
141 | template <unsigned int SH> inline bool operator >= ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) >= f. m_f; } | ||
142 | template <unsigned int SH> inline bool operator == ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) == f. m_f; } | ||
143 | template <unsigned int SH> inline bool operator != ( double d, const fixed<SH> &f ) { return fixed<SH>::d2f( d ) != f. m_f; } | ||
144 | |||
145 | template <unsigned int SH> inline bool operator < ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) < f. m_f; } | ||
146 | template <unsigned int SH> inline bool operator > ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) > f. m_f; } | ||
147 | template <unsigned int SH> inline bool operator <= ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) <= f. m_f; } | ||
148 | template <unsigned int SH> inline bool operator >= ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) >= f. m_f; } | ||
149 | template <unsigned int SH> inline bool operator == ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) == f. m_f; } | ||
150 | template <unsigned int SH> inline bool operator != ( int i, const fixed<SH> &f ) { return fixed<SH>::i2f( i ) != f. m_f; } | ||
151 | |||
152 | |||
153 | template <unsigned int SH> inline fixed<SH> sqrt ( const fixed<SH> &f ) | ||
154 | { | ||
155 | return fixed<SH> ( double( sqrt ( double( f )))); | ||
156 | } | ||
157 | |||
158 | template <unsigned int SH> inline fixed<SH> fabs ( const fixed<SH> &f ) | ||
159 | { | ||
160 | return ( f < 0 ) ? -f : f; | ||
161 | } | ||
162 | |||
163 | template <unsigned int SH> inline ostream &operator << ( ostream &o, const fixed<SH> &f ) | ||
164 | { | ||
165 | o << double( f ); | ||
166 | return o; | ||
167 | } | ||
168 | |||
169 | #endif | ||