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diff liboctave/Range.h @ 9986:672e1b49e01e

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optimize indexing of ranges by single subscripts
author Jaroslav Hajek <highegg@gmail.com>
date Tue, 15 Dec 2009 10:04:34 +0100
parents 967a692ddfe2
children 4c0cdbe0acca
line wrap: on
line diff
--- a/liboctave/Range.h
+++ b/liboctave/Range.h
@@ -77,6 +77,21 @@
 
   sortmode is_sorted (sortmode mode = ASCENDING) const;
 
+  // Support for single-index subscripting, without generating matrix cache.
+
+  double checkelem (octave_idx_type i) const;
+
+  double elem (octave_idx_type i) const
+    {
+#if defined (BOUNDS_CHECKING)
+      return checkelem (i);
+#else
+      return rng_base + rng_inc * i;
+#endif
+    }
+
+  Array<double> index (const idx_vector& i) const;
+
   void set_base (double b)
   {
     if (rng_base != b)