idamnjanovic@51: /**************************************************************************
idamnjanovic@51:  *
idamnjanovic@51:  * File name: omputils.c
idamnjanovic@51:  *
idamnjanovic@51:  * Ron Rubinstein
idamnjanovic@51:  * Computer Science Department
idamnjanovic@51:  * Technion, Haifa 32000 Israel
idamnjanovic@51:  * ronrubin@cs
idamnjanovic@51:  *
idamnjanovic@51:  * Last Updated: 18.8.2009
idamnjanovic@51:  *
idamnjanovic@51:  *************************************************************************/
idamnjanovic@51: 
idamnjanovic@51: #include "omputils.h"
idamnjanovic@51: #include <math.h>
idamnjanovic@51: 
idamnjanovic@51: 
idamnjanovic@51: const char FULL_GAMMA_STR[] = "full";
idamnjanovic@51: const char SPARSE_GAMMA_STR[] = "sparse";
idamnjanovic@51: 
idamnjanovic@51: 
idamnjanovic@51: /* convert seconds to hours, minutes and seconds */
idamnjanovic@51: 
idamnjanovic@51: void secs2hms(double sectot, int *hrs, int *mins, double *secs)
idamnjanovic@51: {
idamnjanovic@51:   *hrs = (int)(floor(sectot/3600)+1e-2);
idamnjanovic@51:   sectot = sectot - 3600*(*hrs);
idamnjanovic@51:   *mins = (int)(floor(sectot/60)+1e-2);
idamnjanovic@51:   *secs = sectot - 60*(*mins);
idamnjanovic@51: }
idamnjanovic@51: 
idamnjanovic@51: 
idamnjanovic@51: /* quicksort, public-domain C implementation by Darel Rex Finley. */
idamnjanovic@51: /* modification: sorts the array data[] as well, according to the values in the array vals[] */
idamnjanovic@51: 
idamnjanovic@51: #define  MAX_LEVELS  300
idamnjanovic@51: 
idamnjanovic@51: void quicksort(mwIndex vals[], double data[], mwIndex n) {
idamnjanovic@51:   
idamnjanovic@51:   long piv, beg[MAX_LEVELS], end[MAX_LEVELS], i=0, L, R, swap ;
idamnjanovic@51:   double datapiv;
idamnjanovic@51:   
idamnjanovic@51:   beg[0]=0;
idamnjanovic@51:   end[0]=n;
idamnjanovic@51:   
idamnjanovic@51:   while (i>=0) {
idamnjanovic@51:     
idamnjanovic@51:     L=beg[i]; 
idamnjanovic@51:     R=end[i]-1;
idamnjanovic@51:     
idamnjanovic@51:     if (L<R) {
idamnjanovic@51:       
idamnjanovic@51:       piv=vals[L];
idamnjanovic@51:       datapiv=data[L];
idamnjanovic@51:       
idamnjanovic@51:       while (L<R) 
idamnjanovic@51:       {
idamnjanovic@51:         while (vals[R]>=piv && L<R) 
idamnjanovic@51:           R--;
idamnjanovic@51:         if (L<R) {
idamnjanovic@51:           vals[L]=vals[R];
idamnjanovic@51:           data[L++]=data[R];
idamnjanovic@51:         }
idamnjanovic@51:         
idamnjanovic@51:         while (vals[L]<=piv && L<R) 
idamnjanovic@51:           L++;
idamnjanovic@51:         if (L<R) { 
idamnjanovic@51:           vals[R]=vals[L];
idamnjanovic@51:           data[R--]=data[L];
idamnjanovic@51:         }
idamnjanovic@51:       }
idamnjanovic@51:       
idamnjanovic@51:       vals[L]=piv;
idamnjanovic@51:       data[L]=datapiv;
idamnjanovic@51:       
idamnjanovic@51:       beg[i+1]=L+1;
idamnjanovic@51:       end[i+1]=end[i];
idamnjanovic@51:       end[i++]=L;
idamnjanovic@51:       
idamnjanovic@51:       if (end[i]-beg[i] > end[i-1]-beg[i-1]) {
idamnjanovic@51:         swap=beg[i]; beg[i]=beg[i-1]; beg[i-1]=swap;
idamnjanovic@51:         swap=end[i]; end[i]=end[i-1]; end[i-1]=swap;
idamnjanovic@51:       }
idamnjanovic@51:     }
idamnjanovic@51:     else {
idamnjanovic@51:       i--;
idamnjanovic@51:     }
idamnjanovic@51:   }
idamnjanovic@51: }