comparison DL/RLS-DLA/private/omputils.h @ 60:ad36f80e2ccf

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+/**************************************************************************
+ *
+ * File name: omputils.h
+ *
+ * Ron Rubinstein
+ * Computer Science Department
+ * Technion, Haifa 32000 Israel
+ * ronrubin@cs
+ *
+ * Last Updated: 18.8.2009
+ *
+ * Utility definitions and functions for the OMP library.
+ *
+ *************************************************************************/
+
+
+#ifndef __OMP_UTILS_H__
+#define __OMP_UTILS_H__
+
+#include "mex.h"
+
+
+/* constants for the representation mode of gamma */
+
+extern const char FULL_GAMMA_STR[];      /* "full" */
+extern const char SPARSE_GAMMA_STR[];    /* "sparse" */
+
+
+#define FULL_GAMMA 1
+#define SPARSE_GAMMA 2
+#define INVALID_MODE 3
+
+
+
+/**************************************************************************
+ * Memory management for OMP2.
+ *
+ * GAMMA_INC_FACTOR:
+ * The matrix GAMMA is allocated with sqrt(n)/2 coefficients per signal,
+ * for a total of nzmax = L*sqrt(n)/2 nonzeros. Whenever GAMMA needs to be
+ * increased, it is increased by a factor of GAMMA_INC_FACTOR.
+ *
+ * MAT_INC_FACTOR:
+ * The matrices Lchol, Gsub and Dsub are allocated with sqrt(n)/2
+ * columns each. If additional columns are needed, this number is 
+ * increased by a factor of MAT_INC_FACTOR.
+ **************************************************************************/
+
+#define GAMMA_INC_FACTOR (1.4)
+#define MAT_INC_FACTOR (1.6)
+
+
+
+/**************************************************************************
+ * Convert number of seconds to hour, minute and second representation.
+ *
+ * Parameters:
+ *   sectot - total number of seconds
+ *   hrs, mins, secs - output hours (whole) and minutes (whole) and seconds
+ *
+ **************************************************************************/
+void secs2hms(double sectot, int *hrs, int *mins, double *secs);
+
+
+
+/**************************************************************************
+ * QuickSort - public-domain C implementation by Darel Rex Finley.
+ *
+ * Modified to sort both the array vals[] and the array data[] according 
+ * to the values in the array vals[].
+ *
+ **************************************************************************/
+void quicksort(mwIndex vals[], double data[], mwIndex n);
+
+
+#endif
+