X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Futil%2Ffixed_point.h;h=6afec5e3cb1effebc61ab291a0f4a5b27382ca77;hb=0f51f94e09af3ab07d55c057a09b44f0790599b9;hp=bea891742e7253c2cfc7b43c2dde5e5abeac86a2;hpb=24c6ddb693cb37e6e68798b6fff862d5968c5891;p=inkscape.git

diff --git a/src/util/fixed_point.h b/src/util/fixed_point.h
index bea891742..6afec5e3c 100644
--- a/src/util/fixed_point.h
+++ b/src/util/fixed_point.h
@@ -1,333 +1,333 @@
-/*
- * Inkscape::Util::FixedPoint - fixed point type
- *
- * Authors:
- *   Jasper van de Gronde <th.v.d.gronde@hccnet.net>
- *
- * Copyright (C) 2006 Jasper van de Gronde
- *
- * Released under GNU GPL, read the file 'COPYING' for more information
- */
-
-#ifndef SEEN_INKSCAPE_UTIL_FIXED_POINT_H
-#define SEEN_INKSCAPE_UTIL_FIXED_POINT_H
-
-#include "traits/reference.h"
-#include <math.h>
-#include <algorithm>
-#include <limits>
-
-namespace Inkscape {
-
-namespace Util {
-
-template <typename T, unsigned int precision>
-class FixedPoint {
-public:
-    FixedPoint() {}
-    FixedPoint(const FixedPoint& value) : v(value.v) {}
-    FixedPoint(char value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned char value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(short value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned short value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(int value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned int value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(double value) : v(static_cast<T>(floor(value*(1<<precision)))) {}
-
-    FixedPoint& operator+=(FixedPoint val) { v += val.v; return *this; }
-    FixedPoint& operator-=(FixedPoint val) { v -= val.v; return *this; }
-    FixedPoint& operator*=(FixedPoint val) {
-        const unsigned int half_size = 8*sizeof(T)/2;
-        const T al = v&((1<<half_size)-1), bl = val.v&((1<<half_size)-1);
-        const T ah = v>>half_size, bh = val.v>>half_size;
-        v = static_cast<unsigned int>(al*bl)>>precision;
-        if ( half_size >= precision ) {
-            v += ((al*bh)+(ah*bl)+((ah*bh)<<half_size))<<(half_size-precision);
-        } else {
-            v += ((al*bh)+(ah*bl))>>(precision-half_size);
-            v += (ah*bh)<<(2*half_size-precision);
-        }
-        return *this;
-    }
-
-    FixedPoint& operator*=(char val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned char val) { v *= val; return *this; }
-    FixedPoint& operator*=(short val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned short val) { v *= val; return *this; }
-    FixedPoint& operator*=(int val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned int val) { v *= val; return *this; }
-
-    FixedPoint operator+(FixedPoint val) const { FixedPoint r(*this); return r+=val; }
-    FixedPoint operator-(FixedPoint val) const { FixedPoint r(*this); return r-=val; }
-    FixedPoint operator*(FixedPoint val) const { FixedPoint r(*this); return r*=val; }
-
-    FixedPoint operator*(char val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned char val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(short val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned short val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(int val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned int val) const { FixedPoint r(*this); return r*=val; }
-
-    float operator*(float val) const { return static_cast<float>(*this)*val; }
-    double operator*(double val) const { return static_cast<double>(*this)*val; }
-
-    operator char() const { return v>>precision; }
-    operator unsigned char() const { return v>>precision; }
-    operator short() const { return v>>precision; }
-    operator unsigned short() const { return v>>precision; }
-    operator int() const { return v>>precision; }
-    operator unsigned int() const { return v>>precision; }
-
-    operator float() const { return ldexpf(v,-precision); }
-    operator double() const { return ldexp(v,-precision); }
-private:
-    T v;
-};
-
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(char a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned char a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(short a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned short a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(int a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned int a, FixedPoint<T,precision> b) { return b*=a; }
-
-template<typename T, unsigned int precision> float operator *(float a, FixedPoint<T,precision> b) { return b*a; }
-template<typename T, unsigned int precision> double operator *(double a, FixedPoint<T,precision> b) { return b*a; }
-
-}
-
-}
-
-#endif
-/*
-  Local Variables:
-  mode:c++
-  c-file-style:"stroustrup"
-  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
-  indent-tabs-mode:nil
-  fill-column:99
-  End:
-*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
-/*
- * Inkscape::Util::FixedPoint - fixed point type
- *
- * Authors:
- *   Jasper van de Gronde <th.v.d.gronde@hccnet.net>
- *
- * Copyright (C) 2006 Jasper van de Gronde
- *
- * Released under GNU GPL, read the file 'COPYING' for more information
- */
-
-#ifndef SEEN_INKSCAPE_UTIL_FIXED_POINT_H
-#define SEEN_INKSCAPE_UTIL_FIXED_POINT_H
-
-#include "traits/reference.h"
-#include <math.h>
-#include <algorithm>
-#include <limits>
-
-namespace Inkscape {
-
-namespace Util {
-
-template <typename T, unsigned int precision>
-class FixedPoint {
-public:
-    FixedPoint() {}
-    FixedPoint(const FixedPoint& value) : v(value.v) {}
-    FixedPoint(char value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned char value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(short value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned short value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(int value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned int value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(double value) : v(static_cast<T>(floor(value*(1<<precision)))) {}
-
-    FixedPoint& operator+=(FixedPoint val) { v += val.v; return *this; }
-    FixedPoint& operator-=(FixedPoint val) { v -= val.v; return *this; }
-    FixedPoint& operator*=(FixedPoint val) {
-        const unsigned int half_size = 8*sizeof(T)/2;
-        const T al = v&((1<<half_size)-1), bl = val.v&((1<<half_size)-1);
-        const T ah = v>>half_size, bh = val.v>>half_size;
-        v = static_cast<unsigned int>(al*bl)>>precision;
-        if ( half_size >= precision ) {
-            v += ((al*bh)+(ah*bl)+((ah*bh)<<half_size))<<(half_size-precision);
-        } else {
-            v += ((al*bh)+(ah*bl))>>(precision-half_size);
-            v += (ah*bh)<<(2*half_size-precision);
-        }
-        return *this;
-    }
-
-    FixedPoint& operator*=(char val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned char val) { v *= val; return *this; }
-    FixedPoint& operator*=(short val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned short val) { v *= val; return *this; }
-    FixedPoint& operator*=(int val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned int val) { v *= val; return *this; }
-
-    FixedPoint operator+(FixedPoint val) const { FixedPoint r(*this); return r+=val; }
-    FixedPoint operator-(FixedPoint val) const { FixedPoint r(*this); return r-=val; }
-    FixedPoint operator*(FixedPoint val) const { FixedPoint r(*this); return r*=val; }
-
-    FixedPoint operator*(char val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned char val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(short val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned short val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(int val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned int val) const { FixedPoint r(*this); return r*=val; }
-
-    float operator*(float val) const { return static_cast<float>(*this)*val; }
-    double operator*(double val) const { return static_cast<double>(*this)*val; }
-
-    operator char() const { return v>>precision; }
-    operator unsigned char() const { return v>>precision; }
-    operator short() const { return v>>precision; }
-    operator unsigned short() const { return v>>precision; }
-    operator int() const { return v>>precision; }
-    operator unsigned int() const { return v>>precision; }
-
-    operator float() const { return ldexpf(v,-precision); }
-    operator double() const { return ldexp(v,-precision); }
-private:
-    T v;
-};
-
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(char a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned char a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(short a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned short a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(int a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned int a, FixedPoint<T,precision> b) { return b*=a; }
-
-template<typename T, unsigned int precision> float operator *(float a, FixedPoint<T,precision> b) { return b*a; }
-template<typename T, unsigned int precision> double operator *(double a, FixedPoint<T,precision> b) { return b*a; }
-
-}
-
-}
-
-#endif
-/*
-  Local Variables:
-  mode:c++
-  c-file-style:"stroustrup"
-  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
-  indent-tabs-mode:nil
-  fill-column:99
-  End:
-*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
-/*
- * Inkscape::Util::FixedPoint - fixed point type
- *
- * Authors:
- *   Jasper van de Gronde <th.v.d.gronde@hccnet.net>
- *
- * Copyright (C) 2006 Jasper van de Gronde
- *
- * Released under GNU GPL, read the file 'COPYING' for more information
- */
-
-#ifndef SEEN_INKSCAPE_UTIL_FIXED_POINT_H
-#define SEEN_INKSCAPE_UTIL_FIXED_POINT_H
-
-#include "traits/reference.h"
-#include <math.h>
-#include <algorithm>
-#include <limits>
-
-namespace Inkscape {
-
-namespace Util {
-
-template <typename T, unsigned int precision>
-class FixedPoint {
-public:
-    FixedPoint() {}
-    FixedPoint(const FixedPoint& value) : v(value.v) {}
-    FixedPoint(char value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned char value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(short value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned short value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(int value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(unsigned int value) : v(static_cast<T>(value)<<precision) {}
-    FixedPoint(double value) : v(static_cast<T>(floor(value*(1<<precision)))) {}
-
-    FixedPoint& operator+=(FixedPoint val) { v += val.v; return *this; }
-    FixedPoint& operator-=(FixedPoint val) { v -= val.v; return *this; }
-    FixedPoint& operator*=(FixedPoint val) {
-        const unsigned int half_size = 8*sizeof(T)/2;
-        const T al = v&((1<<half_size)-1), bl = val.v&((1<<half_size)-1);
-        const T ah = v>>half_size, bh = val.v>>half_size;
-        v = static_cast<unsigned int>(al*bl)>>precision;
-        if ( half_size >= precision ) {
-            v += ((al*bh)+(ah*bl)+((ah*bh)<<half_size))<<(half_size-precision);
-        } else {
-            v += ((al*bh)+(ah*bl))>>(precision-half_size);
-            v += (ah*bh)<<(2*half_size-precision);
-        }
-        return *this;
-    }
-
-    FixedPoint& operator*=(char val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned char val) { v *= val; return *this; }
-    FixedPoint& operator*=(short val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned short val) { v *= val; return *this; }
-    FixedPoint& operator*=(int val) { v *= val; return *this; }
-    FixedPoint& operator*=(unsigned int val) { v *= val; return *this; }
-
-    FixedPoint operator+(FixedPoint val) const { FixedPoint r(*this); return r+=val; }
-    FixedPoint operator-(FixedPoint val) const { FixedPoint r(*this); return r-=val; }
-    FixedPoint operator*(FixedPoint val) const { FixedPoint r(*this); return r*=val; }
-
-    FixedPoint operator*(char val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned char val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(short val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned short val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(int val) const { FixedPoint r(*this); return r*=val; }
-    FixedPoint operator*(unsigned int val) const { FixedPoint r(*this); return r*=val; }
-
-    float operator*(float val) const { return static_cast<float>(*this)*val; }
-    double operator*(double val) const { return static_cast<double>(*this)*val; }
-
-    operator char() const { return v>>precision; }
-    operator unsigned char() const { return v>>precision; }
-    operator short() const { return v>>precision; }
-    operator unsigned short() const { return v>>precision; }
-    operator int() const { return v>>precision; }
-    operator unsigned int() const { return v>>precision; }
-
-    operator float() const { return ldexpf(v,-precision); }
-    operator double() const { return ldexp(v,-precision); }
-private:
-    T v;
-};
-
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(char a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned char a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(short a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned short a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(int a, FixedPoint<T,precision> b) { return b*=a; }
-template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned int a, FixedPoint<T,precision> b) { return b*=a; }
-
-template<typename T, unsigned int precision> float operator *(float a, FixedPoint<T,precision> b) { return b*a; }
-template<typename T, unsigned int precision> double operator *(double a, FixedPoint<T,precision> b) { return b*a; }
-
-}
-
-}
-
-#endif
-/*
-  Local Variables:
-  mode:c++
-  c-file-style:"stroustrup"
-  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
-  indent-tabs-mode:nil
-  fill-column:99
-  End:
-*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+/*
+ * Inkscape::Util::FixedPoint - fixed point type
+ *
+ * Authors:
+ *   Jasper van de Gronde <th.v.d.gronde@hccnet.net>
+ *
+ * Copyright (C) 2006 Jasper van de Gronde
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_INKSCAPE_UTIL_FIXED_POINT_H
+#define SEEN_INKSCAPE_UTIL_FIXED_POINT_H
+
+#include "traits/reference.h"
+#include <math.h>
+#include <algorithm>
+#include <limits>
+
+namespace Inkscape {
+
+namespace Util {
+
+template <typename T, unsigned int precision>
+class FixedPoint {
+public:
+    FixedPoint() {}
+    FixedPoint(const FixedPoint& value) : v(value.v) {}
+    FixedPoint(char value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned char value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(short value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned short value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(int value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned int value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(double value) : v(static_cast<T>(floor(value*(1<<precision)))) {}
+
+    FixedPoint& operator+=(FixedPoint val) { v += val.v; return *this; }
+    FixedPoint& operator-=(FixedPoint val) { v -= val.v; return *this; }
+    FixedPoint& operator*=(FixedPoint val) {
+        const unsigned int half_size = 8*sizeof(T)/2;
+        const T al = v&((1<<half_size)-1), bl = val.v&((1<<half_size)-1);
+        const T ah = v>>half_size, bh = val.v>>half_size;
+        v = static_cast<unsigned int>(al*bl)>>precision;
+        if ( half_size >= precision ) {
+            v += ((al*bh)+(ah*bl)+((ah*bh)<<half_size))<<(half_size-precision);
+        } else {
+            v += ((al*bh)+(ah*bl))>>(precision-half_size);
+            v += (ah*bh)<<(2*half_size-precision);
+        }
+        return *this;
+    }
+
+    FixedPoint& operator*=(char val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned char val) { v *= val; return *this; }
+    FixedPoint& operator*=(short val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned short val) { v *= val; return *this; }
+    FixedPoint& operator*=(int val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned int val) { v *= val; return *this; }
+
+    FixedPoint operator+(FixedPoint val) const { FixedPoint r(*this); return r+=val; }
+    FixedPoint operator-(FixedPoint val) const { FixedPoint r(*this); return r-=val; }
+    FixedPoint operator*(FixedPoint val) const { FixedPoint r(*this); return r*=val; }
+
+    FixedPoint operator*(char val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned char val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(short val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned short val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(int val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned int val) const { FixedPoint r(*this); return r*=val; }
+
+    float operator*(float val) const { return static_cast<float>(*this)*val; }
+    double operator*(double val) const { return static_cast<double>(*this)*val; }
+
+    operator char() const { return v>>precision; }
+    operator unsigned char() const { return v>>precision; }
+    operator short() const { return v>>precision; }
+    operator unsigned short() const { return v>>precision; }
+    operator int() const { return v>>precision; }
+    operator unsigned int() const { return v>>precision; }
+
+    operator float() const { return ldexpf(v,-precision); }
+    operator double() const { return ldexp(v,-precision); }
+private:
+    T v;
+};
+
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(char a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned char a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(short a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned short a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(int a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned int a, FixedPoint<T,precision> b) { return b*=a; }
+
+template<typename T, unsigned int precision> float operator *(float a, FixedPoint<T,precision> b) { return b*a; }
+template<typename T, unsigned int precision> double operator *(double a, FixedPoint<T,precision> b) { return b*a; }
+
+}
+
+}
+
+#endif
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+/*
+ * Inkscape::Util::FixedPoint - fixed point type
+ *
+ * Authors:
+ *   Jasper van de Gronde <th.v.d.gronde@hccnet.net>
+ *
+ * Copyright (C) 2006 Jasper van de Gronde
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_INKSCAPE_UTIL_FIXED_POINT_H
+#define SEEN_INKSCAPE_UTIL_FIXED_POINT_H
+
+#include "traits/reference.h"
+#include <math.h>
+#include <algorithm>
+#include <limits>
+
+namespace Inkscape {
+
+namespace Util {
+
+template <typename T, unsigned int precision>
+class FixedPoint {
+public:
+    FixedPoint() {}
+    FixedPoint(const FixedPoint& value) : v(value.v) {}
+    FixedPoint(char value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned char value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(short value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned short value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(int value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned int value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(double value) : v(static_cast<T>(floor(value*(1<<precision)))) {}
+
+    FixedPoint& operator+=(FixedPoint val) { v += val.v; return *this; }
+    FixedPoint& operator-=(FixedPoint val) { v -= val.v; return *this; }
+    FixedPoint& operator*=(FixedPoint val) {
+        const unsigned int half_size = 8*sizeof(T)/2;
+        const T al = v&((1<<half_size)-1), bl = val.v&((1<<half_size)-1);
+        const T ah = v>>half_size, bh = val.v>>half_size;
+        v = static_cast<unsigned int>(al*bl)>>precision;
+        if ( half_size >= precision ) {
+            v += ((al*bh)+(ah*bl)+((ah*bh)<<half_size))<<(half_size-precision);
+        } else {
+            v += ((al*bh)+(ah*bl))>>(precision-half_size);
+            v += (ah*bh)<<(2*half_size-precision);
+        }
+        return *this;
+    }
+
+    FixedPoint& operator*=(char val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned char val) { v *= val; return *this; }
+    FixedPoint& operator*=(short val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned short val) { v *= val; return *this; }
+    FixedPoint& operator*=(int val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned int val) { v *= val; return *this; }
+
+    FixedPoint operator+(FixedPoint val) const { FixedPoint r(*this); return r+=val; }
+    FixedPoint operator-(FixedPoint val) const { FixedPoint r(*this); return r-=val; }
+    FixedPoint operator*(FixedPoint val) const { FixedPoint r(*this); return r*=val; }
+
+    FixedPoint operator*(char val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned char val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(short val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned short val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(int val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned int val) const { FixedPoint r(*this); return r*=val; }
+
+    float operator*(float val) const { return static_cast<float>(*this)*val; }
+    double operator*(double val) const { return static_cast<double>(*this)*val; }
+
+    operator char() const { return v>>precision; }
+    operator unsigned char() const { return v>>precision; }
+    operator short() const { return v>>precision; }
+    operator unsigned short() const { return v>>precision; }
+    operator int() const { return v>>precision; }
+    operator unsigned int() const { return v>>precision; }
+
+    operator float() const { return ldexpf(v,-precision); }
+    operator double() const { return ldexp(v,-precision); }
+private:
+    T v;
+};
+
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(char a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned char a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(short a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned short a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(int a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned int a, FixedPoint<T,precision> b) { return b*=a; }
+
+template<typename T, unsigned int precision> float operator *(float a, FixedPoint<T,precision> b) { return b*a; }
+template<typename T, unsigned int precision> double operator *(double a, FixedPoint<T,precision> b) { return b*a; }
+
+}
+
+}
+
+#endif
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+/*
+ * Inkscape::Util::FixedPoint - fixed point type
+ *
+ * Authors:
+ *   Jasper van de Gronde <th.v.d.gronde@hccnet.net>
+ *
+ * Copyright (C) 2006 Jasper van de Gronde
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_INKSCAPE_UTIL_FIXED_POINT_H
+#define SEEN_INKSCAPE_UTIL_FIXED_POINT_H
+
+#include "traits/reference.h"
+#include <math.h>
+#include <algorithm>
+#include <limits>
+
+namespace Inkscape {
+
+namespace Util {
+
+template <typename T, unsigned int precision>
+class FixedPoint {
+public:
+    FixedPoint() {}
+    FixedPoint(const FixedPoint& value) : v(value.v) {}
+    FixedPoint(char value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned char value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(short value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned short value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(int value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(unsigned int value) : v(static_cast<T>(value)<<precision) {}
+    FixedPoint(double value) : v(static_cast<T>(floor(value*(1<<precision)))) {}
+
+    FixedPoint& operator+=(FixedPoint val) { v += val.v; return *this; }
+    FixedPoint& operator-=(FixedPoint val) { v -= val.v; return *this; }
+    FixedPoint& operator*=(FixedPoint val) {
+        const unsigned int half_size = 8*sizeof(T)/2;
+        const T al = v&((1<<half_size)-1), bl = val.v&((1<<half_size)-1);
+        const T ah = v>>half_size, bh = val.v>>half_size;
+        v = static_cast<unsigned int>(al*bl)>>precision;
+        if ( half_size >= precision ) {
+            v += ((al*bh)+(ah*bl)+((ah*bh)<<half_size))<<(half_size-precision);
+        } else {
+            v += ((al*bh)+(ah*bl))>>(precision-half_size);
+            v += (ah*bh)<<(2*half_size-precision);
+        }
+        return *this;
+    }
+
+    FixedPoint& operator*=(char val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned char val) { v *= val; return *this; }
+    FixedPoint& operator*=(short val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned short val) { v *= val; return *this; }
+    FixedPoint& operator*=(int val) { v *= val; return *this; }
+    FixedPoint& operator*=(unsigned int val) { v *= val; return *this; }
+
+    FixedPoint operator+(FixedPoint val) const { FixedPoint r(*this); return r+=val; }
+    FixedPoint operator-(FixedPoint val) const { FixedPoint r(*this); return r-=val; }
+    FixedPoint operator*(FixedPoint val) const { FixedPoint r(*this); return r*=val; }
+
+    FixedPoint operator*(char val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned char val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(short val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned short val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(int val) const { FixedPoint r(*this); return r*=val; }
+    FixedPoint operator*(unsigned int val) const { FixedPoint r(*this); return r*=val; }
+
+    float operator*(float val) const { return static_cast<float>(*this)*val; }
+    double operator*(double val) const { return static_cast<double>(*this)*val; }
+
+    operator char() const { return v>>precision; }
+    operator unsigned char() const { return v>>precision; }
+    operator short() const { return v>>precision; }
+    operator unsigned short() const { return v>>precision; }
+    operator int() const { return v>>precision; }
+    operator unsigned int() const { return v>>precision; }
+
+    operator float() const { return ldexpf(v,-precision); }
+    operator double() const { return ldexp(v,-precision); }
+private:
+    T v;
+};
+
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(char a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned char a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(short a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned short a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(int a, FixedPoint<T,precision> b) { return b*=a; }
+template<typename T, unsigned int precision> FixedPoint<T,precision> operator *(unsigned int a, FixedPoint<T,precision> b) { return b*=a; }
+
+template<typename T, unsigned int precision> float operator *(float a, FixedPoint<T,precision> b) { return b*a; }
+template<typename T, unsigned int precision> double operator *(double a, FixedPoint<T,precision> b) { return b*a; }
+
+}
+
+}
+
+#endif
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :