source file of the Flower Library
- (c) 1996,1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1996--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-
#ifndef INTERVAL_TCC
#define INTERVAL_TCC
-#include <assert.h>
-#include <math.h>
+#include <cassert>
+
#include "interval.hh"
-#include "string.hh"
+#include "std-string.hh"
+// MacOS 10.3 problems:
+// #include <cmath>
+using namespace std;
template<class T>
int
-_Interval__compare (const Interval_t<T>&a,Interval_t<T> const&b)
+_Interval__compare (const Interval_t<T> &a, Interval_t<T> const &b)
{
- if (a.left == b.left && a.right == b.right)
- return 0;
-
- if (a.left <= b.left && a.right >= b.right)
- return 1;
+ if (a.at (LEFT) == b.at (LEFT) && a.at (RIGHT) == b.at (RIGHT))
+ return 0;
+
+ if (a.at (LEFT) <= b.at (LEFT) && a.at (RIGHT) >= b.at (RIGHT))
+ return 1;
- if (a.left >= b.left && a.right <= b.right)
- return -1;
+ if (a.at (LEFT) >= b.at (LEFT) && a.at (RIGHT) <= b.at (RIGHT))
+ return -1;
- return -2;
+ return -2;
}
template<class T>
-bool
-Interval_t<T>::contains_b (Interval_t<T> const& a)const
+bool
+Interval_t<T>::superset (Interval_t<T> const &a) const
{
- int c_i= _Interval__compare (*this, a);
- if (c_i == -2)
- return false;
- return c_i >= 0;
+ int c_i = _Interval__compare (*this, a);
+ if (c_i == -2)
+ return false;
+ return c_i >= 0;
}
template<class T>
int
-Interval__compare (const Interval_t<T>&a,Interval_t<T> const&b)
+Interval__compare (Interval_t<T> const &a, Interval_t<T> const &b)
{
- int i = _Interval__compare (a,b);
- if (i < -1)
- assert (false);
- return i;
+ int i = _Interval__compare (a, b);
+ if (i < -1)
+ assert (false);
+ return i;
}
template<class T>
void
-Interval_t<T>::set_empty()
+Interval_t<T>::set_empty ()
{
- left = (T) infinity();
- right = (T) -infinity();
+ at (LEFT) = (T) infinity ();
+ at (RIGHT) = (T) -infinity ();
}
template<class T>
-T
-Interval_t<T>::length() const {
- assert (right >= left);
- return right-left;
+void
+Interval_t<T>::set_full ()
+{
+ at (LEFT) = (T) -infinity ();
+ at (RIGHT) = (T) infinity ();
}
template<class T>
-void
-Interval_t<T>::unite (Interval_t<T> h)
+T
+Interval_t<T>::length () const
{
- if (h.left<left)
- left = h.left;
- if (h.right>right)
- right = h.right;
+ if (at (RIGHT) <= at (LEFT))
+ return 0;
+ else
+ return at (RIGHT) - at (LEFT);
}
-/**
- smallest Interval which includes *this and #h#
- */
+template<class T>
+T
+Interval_t<T>::delta () const
+{
+ return at (RIGHT) - at (LEFT);
+}
+/* smallest Interval which includes *this and #h# */
template<class T>
void
-Interval_t<T>::intersect (Interval_t<T> h)
+Interval_t<T>::unite (Interval_t<T> h)
{
-#if defined (__GNUG__) && ! defined (__STRICT_ANSI__)
- left = h.left >? left;
- right = h.right <?right;
-#else
- left = max (h.left, left);
- right = min (h.right, right);
-#endif
+ at (LEFT) = min (h.at (LEFT), at (LEFT));
+ at (RIGHT) = max (h.at (RIGHT), at (RIGHT));
}
template<class T>
-Interval_t<T>
-intersect (Interval_t<T> x, Interval_t<T> const &y)
+void
+Interval_t<T>::intersect (Interval_t<T> h)
{
- x.intersect (y);
- return x;
+ at (LEFT) = max (h.at (LEFT), at (LEFT));
+ at (RIGHT) = min (h.at (RIGHT), at (RIGHT));
}
template<class T>
-String
-Interval_t<T>::str() const
+string
+Interval_t<T>::to_string () const
{
- if (empty_b())
- return "[empty]";
- String s ("[");
-
- return s + String (left) + String ("," ) + String (right ) + String ("]" );
+ if (is_empty ())
+ return "[empty]";
+ string s ("[");
+
+ return (s + T_to_string (at (LEFT)) + string (",")
+ + T_to_string (at (RIGHT)) + string ("]"));
}
template<class T>
bool
-Interval_t<T>::elt_b (T r)
+Interval_t<T>::contains (T r) const
{
- return r >= left && r <= right;
+ return r >= at (LEFT) && r <= at (RIGHT);
}
-
-#define INTERVAL__INSTANTIATE(T) struct Interval_t<T>;\
- template int Interval__compare(const Interval_t<T>&,Interval_t<T> const&)
+#define INTERVAL__INSTANTIATE(T) struct Interval_t<T>; \
+ template int Interval__compare (const Interval_t<T> &, Interval_t<T> const &)
#endif // INTERVAL_TCC