Memory size control

[HMEMORYS]

                          +--------------------+
                          |CALL  HLIMIT (NWPAW) |
                          +--------------------+
                                  

Action: Defines the maximum total size NWPAW of common /PAWC/.

Remark:

1. HLIMIT must be called before any other HBOOK routine.
2. HBOOK is compiled with a COMMON/PAWC/ dimensioned to 10000 words. If NWPAW<10000, then the default value of 10000 is assumed.
3. If ZEBRA has already been initialised, HLIMIT must be called with a negative argument, e.g. CALL HLIMIT(-NWPAW).

                            +----------------------+
                            |CALL  HLOCAT (ID,LOC*) |
                            +----------------------+
                                     

   Action: Returns the pointer in common /PAWC/ to the ZEBRA ([bib-ZEBRA]) structure, which contains the description of a given histogram.

   Input parameter:

   

   ID

   histogram identifier

   Output Parameter:

   LOC

   Pointer to the ZEBRA bank containing the histogram information.

   This routine can be useful to access directly the memory area of a given histogram, to extract any information that cannot be obtained with the entries previously described.

   Space requirements

   The argument NWPAWC must be given a value large enough to accomodate in memory all histograms (1-D and 2-D) and all Ntuple headers and buffers, i.e.

                          NF         N1         N2          NT
           NWPAWC>10000+ sum S (i) +sum S  (i)+sum  S (i)+ sum S (i)
                         i=1  F      i=1 1      i=1  2     i=1  N
   

   NF

   Number of open files

   S (i)

   100+LREC , where LREC is the buffer size for F i file i, as specified in a call to HROPEN.

   N1

   Number of 1-D histograms

   S (i)

   Space occupied by 1-D histogram i, i.e. 1 40+(NCHAN+2)*PACK+IERR*(NCHAN+10)+IFUN*(NCHAN+10)

   NCHAN

   Number of channels in histogram

   PACK

   Packing factor (1. by default). See parameter HBOOK1.

   IERR

   1 if HBARX called, 0  otherwise.

   IFUN

   1 if the histogram has an associated function ( HFUNC, fits or smoothing)

   N2

   Number of 2-D histograms

   S (i)

   Space occupied by 2-D histogram i, i.e. 2 40+(NCHANX+2)*(NCHANY+2)*PACK + space for projections, slices and bands (which are 1-D histograms).

   NT

   Number of Ntuples

   S (i)

   Space occupied by headers and buffers of 2 Ntuple i (see routines HBOOKN and HBNT).