update ast

1 files changed, 0 insertions, 1664 deletions

diff --git a/ast/normmap.c b/ast/normmap.c
deleted file mode 100644
index 3013ad1..0000000
--- a/ast/normmap.c
+++ /dev/null
@@ -1,1664 +0,0 @@
-/*
-*class++
-*  Name:
-*     NormMap
-
-*  Purpose:
-*     Normalise coordinates using a supplied Frame.
-
-*  Constructor Function:
-c     astNormMap
-f     AST_NORMMAP
-
-*  Description:
-*     The NormMap class implements a Mapping which normalises coordinate
-*     values using the
-c     astNorm function
-f     AST_NORM routine
-*     of a supplied Frame. The number of inputs and outputs of a NormMap
-*     are both equal to the number of axes in the supplied Frame.
-*
-*     The forward and inverse transformation of a NormMap are both
-*     defined but are identical (that is, they do not form a real inverse
-*     pair in that the inverse transformation does not undo the
-*     normalisation, instead it reapplies it). However, the
-c     astSimplify
-f     AST_SIMPLIFY
-*     function will replace neighbouring pairs of forward and inverse
-*     NormMaps by a single UnitMap.
-
-*  Inheritance:
-*     The NormMap class inherits from the Mapping class.
-
-*  Attributes:
-*     The NormMap class does not define any new attributes beyond
-*     those which are applicable to all Mappings.
-
-*  Functions:
-c     The NormMap class does not define any new functions beyond those
-f     The NormMap class does not define any new routines beyond those
-*     which are applicable to all Mappings.
-
-*  Copyright:
-*     Copyright (C) 1997-2006 Council for the Central Laboratory of the
-*     Research Councils
-
-*  Licence:
-*     This program is free software: you can redistribute it and/or
-*     modify it under the terms of the GNU Lesser General Public
-*     License as published by the Free Software Foundation, either
-*     version 3 of the License, or (at your option) any later
-*     version.
-*     
-*     This program is distributed in the hope that it will be useful,
-*     but WITHOUT ANY WARRANTY; without even the implied warranty of
-*     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*     GNU Lesser General Public License for more details.
-*     
-*     You should have received a copy of the GNU Lesser General
-*     License along with this program.  If not, see
-*     <http://www.gnu.org/licenses/>.
-
-*  Authors:
-*     DSB: David S. Berry (Starlink)
-
-*  History:
-*     11-JUL-2005 (DSB):
-*        Original version.
-*     23-AUG-2006 (DSB):
-*        Override astEqual.
-*class--
-*/
-
-/* Module Macros. */
-/* ============== */
-/* Set the name of the class we are implementing. This indicates to
-   the header files that define class interfaces that they should make
-   "protected" symbols available. */
-#define astCLASS NormMap
-
-/* Include files. */
-/* ============== */
-/* Interface definitions. */
-/* ---------------------- */
-
-#include "globals.h"             /* Thread-safe global data access */
-#include "error.h"               /* Error reporting facilities */
-#include "memory.h"              /* Memory allocation facilities */
-#include "object.h"              /* Base Object class */
-#include "pointset.h"            /* Sets of points/coordinates */
-#include "mapping.h"             /* Coordinate mappings (parent class) */
-#include "channel.h"             /* I/O channels */
-#include "unitmap.h"             /* Unit Mappings */
-#include "normmap.h"             /* Interface definition for this class */
-
-/* Error code definitions. */
-/* ----------------------- */
-#include "ast_err.h"             /* AST error codes */
-
-/* C header files. */
-/* --------------- */
-#include <float.h>
-#include <math.h>
-#include <stdarg.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <string.h>
-
-/* Module Variables. */
-/* ================= */
-
-/* Address of this static variable is used as a unique identifier for
-   member of this class. */
-static int class_check;
-
-/* Pointers to parent class methods which are extended by this class. */
-static AstPointSet *(* parent_transform)( AstMapping *, AstPointSet *, int, AstPointSet *, int * );
-static int *(* parent_mapsplit)( AstMapping *, int, const int *, AstMapping **, int * );
-
-#if defined(THREAD_SAFE)
-static int (* parent_managelock)( AstObject *, int, int, AstObject **, int * );
-#endif
-
-
-#ifdef THREAD_SAFE
-/* Define how to initialise thread-specific globals. */
-#define GLOBAL_inits \
-   globals->Class_Init = 0;
-
-/* Create the function that initialises global data for this module. */
-astMAKE_INITGLOBALS(NormMap)
-
-/* Define macros for accessing each item of thread specific global data. */
-#define class_init astGLOBAL(NormMap,Class_Init)
-#define class_vtab astGLOBAL(NormMap,Class_Vtab)
-
-
-#include <pthread.h>
-
-
-#else
-
-
-/* Define the class virtual function table and its initialisation flag
-   as static variables. */
-static AstNormMapVtab class_vtab;   /* Virtual function table */
-static int class_init = 0;       /* Virtual function table initialised? */
-
-#endif
-
-/* External Interface Function Prototypes. */
-/* ======================================= */
-/* The following functions have public prototypes only (i.e. no
-   protected prototypes), so we must provide local prototypes for use
-   within this module. */
-AstNormMap *astNormMapId_( void *, const char *, ... );
-
-/* Prototypes for Private Member Functions. */
-/* ======================================== */
-static AstMapping *RemoveRegions( AstMapping *, int * );
-static AstPointSet *Transform( AstMapping *, AstPointSet *, int, AstPointSet *, int * );
-static double Rate( AstMapping *, double *, int, int, int * );
-static int MapMerge( AstMapping *, int, int, int *, AstMapping ***, int **, int * );
-static void Copy( const AstObject *, AstObject *, int * );
-static void Delete( AstObject *, int * );
-static void Dump( AstObject *, AstChannel *, int * );
-static int Equal( AstObject *, AstObject *, int * );
-static int *MapSplit( AstMapping *, int, const int *, AstMapping **, int * );
-
-#if defined(THREAD_SAFE)
-static int ManageLock( AstObject *, int, int, AstObject **, int * );
-#endif
-
-
-/* Member functions. */
-/* ================= */
-
-static int Equal( AstObject *this_object, AstObject *that_object, int *status ) {
-/*
-*  Name:
-*     Equal
-
-*  Purpose:
-*     Test if two NormMaps are equivalent.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     int Equal( AstObject *this, AstObject *that, int *status )
-
-*  Class Membership:
-*     NormMap member function (over-rides the astEqual protected
-*     method inherited from the astMapping class).
-
-*  Description:
-*     This function returns a boolean result (0 or 1) to indicate whether
-*     two NormMaps are equivalent.
-
-*  Parameters:
-*     this
-*        Pointer to the first Object (a NormMap).
-*     that
-*        Pointer to the second Object.
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*     One if the NormMaps are equivalent, zero otherwise.
-
-*  Notes:
-*     - A value of zero will be returned if this function is invoked
-*     with the global status set, or if it should fail for any reason.
-*/
-
-/* Local Variables: */
-   AstNormMap *that;
-   AstNormMap *this;
-   int result;
-
-/* Initialise. */
-   result = 0;
-
-/* Check the global error status. */
-   if ( !astOK ) return result;
-
-/* Obtain pointers to the two NormMap structures. */
-   this = (AstNormMap *) this_object;
-   that = (AstNormMap *) that_object;
-
-/* Check the second object is a NormMap. We know the first is a
-   NormMap since we have arrived at this implementation of the virtual
-   function. */
-   if( astIsANormMap( that ) ) {
-
-/* Check the Invert flags for the two NormMaps are equal. */
-      if( astGetInvert( this ) == astGetInvert( that ) ) {
-
-/* Check the two Frames are equal. */
-         if( astEqual( this->frame, that->frame ) ) {
-            result = 1;
-         }
-      }
-   }
-
-/* If an error occurred, clear the result value. */
-   if ( !astOK ) result = 0;
-
-/* Return the result, */
-   return result;
-}
-
-void astInitNormMapVtab_(  AstNormMapVtab *vtab, const char *name, int *status ) {
-/*
-*+
-*  Name:
-*     astInitNormMapVtab
-
-*  Purpose:
-*     Initialise a virtual function table for a NormMap.
-
-*  Type:
-*     Protected function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     void astInitNormMapVtab( AstNormMapVtab *vtab, const char *name )
-
-*  Class Membership:
-*     NormMap vtab initialiser.
-
-*  Description:
-*     This function initialises the component of a virtual function
-*     table which is used by the NormMap class.
-
-*  Parameters:
-*     vtab
-*        Pointer to the virtual function table. The components used by
-*        all ancestral classes will be initialised if they have not already
-*        been initialised.
-*     name
-*        Pointer to a constant null-terminated character string which contains
-*        the name of the class to which the virtual function table belongs (it
-*        is this pointer value that will subsequently be returned by the Object
-*        astClass function).
-*-
-*/
-
-/* Local Variables: */
-   astDECLARE_GLOBALS            /* Pointer to thread-specific global data */
-   AstObjectVtab *object;        /* Pointer to Object component of Vtab */
-   AstMappingVtab *mapping;      /* Pointer to Mapping component of Vtab */
-
-/* Check the local error status. */
-   if ( !astOK ) return;
-
-/* Get a pointer to the thread specific global data structure. */
-   astGET_GLOBALS(NULL);
-
-/* Initialize the component of the virtual function table used by the
-   parent class. */
-   astInitMappingVtab( (AstMappingVtab *) vtab, name );
-
-/* Store a unique "magic" value in the virtual function table. This
-   will be used (by astIsANormMap) to determine if an object belongs
-   to this class.  We can conveniently use the address of the (static)
-   class_check variable to generate this unique value. */
-   vtab->id.check = &class_check;
-   vtab->id.parent = &(((AstMappingVtab *) vtab)->id);
-
-/* Initialise member function pointers. */
-/* ------------------------------------ */
-/* Store pointers to the member functions (implemented here) that provide
-   virtual methods for this class. */
-
-/* Save the inherited pointers to methods that will be extended, and
-   replace them with pointers to the new member functions. */
-   object = (AstObjectVtab *) vtab;
-   mapping = (AstMappingVtab *) vtab;
-
-   mapping->RemoveRegions = RemoveRegions;
-
-#if defined(THREAD_SAFE)
-   parent_managelock = object->ManageLock;
-   object->ManageLock = ManageLock;
-#endif
-
-   parent_transform = mapping->Transform;
-   mapping->Transform = Transform;
-
-   parent_mapsplit = mapping->MapSplit;
-   mapping->MapSplit = MapSplit;
-
-/* Store replacement pointers for methods which will be over-ridden by
-   new member functions implemented here. */
-   object->Equal = Equal;
-   mapping->MapMerge = MapMerge;
-   mapping->MapSplit = MapSplit;
-   mapping->Rate = Rate;
-
-/* Declare the copy constructor, destructor and class dump function. */
-   astSetDump( vtab, Dump, "NormMap", "Normalise axis values" );
-   astSetCopy( vtab, Copy );
-   astSetDelete( vtab, Delete );
-
-/* If we have just initialised the vtab for the current class, indicate
-   that the vtab is now initialised, and store a pointer to the class
-   identifier in the base "object" level of the vtab. */
-   if( vtab == &class_vtab ) {
-      class_init = 1;
-      astSetVtabClassIdentifier( vtab, &(vtab->id) );
-   }
-}
-
-#if defined(THREAD_SAFE)
-static int ManageLock( AstObject *this_object, int mode, int extra,
-                       AstObject **fail, int *status ) {
-/*
-*  Name:
-*     ManageLock
-
-*  Purpose:
-*     Manage the thread lock on an Object.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     #include "object.h"
-*     AstObject *ManageLock( AstObject *this, int mode, int extra,
-*                            AstObject **fail, int *status )
-
-*  Class Membership:
-*     NormMap member function (over-rides the astManageLock protected
-*     method inherited from the parent class).
-
-*  Description:
-*     This function manages the thread lock on the supplied Object. The
-*     lock can be locked, unlocked or checked by this function as
-*     deteremined by parameter "mode". See astLock for details of the way
-*     these locks are used.
-
-*  Parameters:
-*     this
-*        Pointer to the Object.
-*     mode
-*        An integer flag indicating what the function should do:
-*
-*        AST__LOCK: Lock the Object for exclusive use by the calling
-*        thread. The "extra" value indicates what should be done if the
-*        Object is already locked (wait or report an error - see astLock).
-*
-*        AST__UNLOCK: Unlock the Object for use by other threads.
-*
-*        AST__CHECKLOCK: Check that the object is locked for use by the
-*        calling thread (report an error if not).
-*     extra
-*        Extra mode-specific information.
-*     fail
-*        If a non-zero function value is returned, a pointer to the
-*        Object that caused the failure is returned at "*fail". This may
-*        be "this" or it may be an Object contained within "this". Note,
-*        the Object's reference count is not incremented, and so the
-*        returned pointer should not be annulled. A NULL pointer is
-*        returned if this function returns a value of zero.
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*    A local status value:
-*        0 - Success
-*        1 - Could not lock or unlock the object because it was already
-*            locked by another thread.
-*        2 - Failed to lock a POSIX mutex
-*        3 - Failed to unlock a POSIX mutex
-*        4 - Bad "mode" value supplied.
-
-*  Notes:
-*     - This function attempts to execute even if an error has already
-*     occurred.
-*/
-
-/* Local Variables: */
-   AstNormMap *this;       /* Pointer to NormMap structure */
-   int result;             /* Returned status value */
-
-/* Initialise */
-   result = 0;
-
-/* Check the supplied pointer is not NULL. */
-   if( !this_object ) return result;
-
-/* Obtain a pointers to the NormMap structure. */
-   this = (AstNormMap *) this_object;
-
-/* Invoke the ManageLock method inherited from the parent class. */
-   if( !result ) result = (*parent_managelock)( this_object, mode, extra,
-                                                fail, status );
-
-/* Invoke the astManageLock method on any Objects contained within
-   the supplied Object. */
-   if( !result ) result = astManageLock( this->frame, mode, extra, fail );
-
-   return result;
-
-}
-#endif
-
-static int MapMerge( AstMapping *this, int where, int series, int *nmap,
-                     AstMapping ***map_list, int **invert_list, int *status ) {
-/*
-*  Name:
-*     MapMerge
-
-*  Purpose:
-*     Simplify a sequence of Mappings containing a NormMap.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     #include "mapping.h"
-*     int MapMerge( AstMapping *this, int where, int series, int *nmap,
-*                   AstMapping ***map_list, int **invert_list, int *status )
-
-*  Class Membership:
-*     NormMap method (over-rides the protected astMapMerge method
-*     inherited from the Mapping class).
-
-*  Description:
-*     This function attempts to simplify a sequence of Mappings by
-*     merging a nominated NormMap in the sequence with its neighbours,
-*     so as to shorten the sequence if possible.
-*
-*     In many cases, simplification will not be possible and the
-*     function will return -1 to indicate this, without further
-*     action.
-*
-*     In most cases of interest, however, this function will either
-*     attempt to replace the nominated NormMap with one which it
-*     considers simpler, or to merge it with the Mappings which
-*     immediately precede it or follow it in the sequence (both will
-*     normally be considered). This is sufficient to ensure the
-*     eventual simplification of most Mapping sequences by repeated
-*     application of this function.
-*
-*     In some cases, the function may attempt more elaborate
-*     simplification, involving any number of other Mappings in the
-*     sequence. It is not restricted in the type or scope of
-*     simplification it may perform, but will normally only attempt
-*     elaborate simplification in cases where a more straightforward
-*     approach is not adequate.
-
-*  Parameters:
-*     this
-*        Pointer to the nominated NormMap which is to be merged with
-*        its neighbours. This should be a cloned copy of the NormMap
-*        pointer contained in the array element "(*map_list)[where]"
-*        (see below). This pointer will not be annulled, and the
-*        NormMap it identifies will not be modified by this function.
-*     where
-*        Index in the "*map_list" array (below) at which the pointer
-*        to the nominated NormMap resides.
-*     series
-*        A non-zero value indicates that the sequence of Mappings to
-*        be simplified will be applied in series (i.e. one after the
-*        other), whereas a zero value indicates that they will be
-*        applied in parallel (i.e. on successive sub-sets of the
-*        input/output coordinates).
-*     nmap
-*        Address of an int which counts the number of Mappings in the
-*        sequence. On entry this should be set to the initial number
-*        of Mappings. On exit it will be updated to record the number
-*        of Mappings remaining after simplification.
-*     map_list
-*        Address of a pointer to a dynamically allocated array of
-*        Mapping pointers (produced, for example, by the astMapList
-*        method) which identifies the sequence of Mappings. On entry,
-*        the initial sequence of Mappings to be simplified should be
-*        supplied.
-*
-*        On exit, the contents of this array will be modified to
-*        reflect any simplification carried out. Any form of
-*        simplification may be performed. This may involve any of: (a)
-*        removing Mappings by annulling any of the pointers supplied,
-*        (b) replacing them with pointers to new Mappings, (c)
-*        inserting additional Mappings and (d) changing their order.
-*
-*        The intention is to reduce the number of Mappings in the
-*        sequence, if possible, and any reduction will be reflected in
-*        the value of "*nmap" returned. However, simplifications which
-*        do not reduce the length of the sequence (but improve its
-*        execution time, for example) may also be performed, and the
-*        sequence might conceivably increase in length (but normally
-*        only in order to split up a Mapping into pieces that can be
-*        more easily merged with their neighbours on subsequent
-*        invocations of this function).
-*
-*        If Mappings are removed from the sequence, any gaps that
-*        remain will be closed up, by moving subsequent Mapping
-*        pointers along in the array, so that vacated elements occur
-*        at the end. If the sequence increases in length, the array
-*        will be extended (and its pointer updated) if necessary to
-*        accommodate any new elements.
-*
-*        Note that any (or all) of the Mapping pointers supplied in
-*        this array may be annulled by this function, but the Mappings
-*        to which they refer are not modified in any way (although
-*        they may, of course, be deleted if the annulled pointer is
-*        the final one).
-*     invert_list
-*        Address of a pointer to a dynamically allocated array which,
-*        on entry, should contain values to be assigned to the Invert
-*        attributes of the Mappings identified in the "*map_list"
-*        array before they are applied (this array might have been
-*        produced, for example, by the astMapList method). These
-*        values will be used by this function instead of the actual
-*        Invert attributes of the Mappings supplied, which are
-*        ignored.
-*
-*        On exit, the contents of this array will be updated to
-*        correspond with the possibly modified contents of the
-*        "*map_list" array.  If the Mapping sequence increases in
-*        length, the "*invert_list" array will be extended (and its
-*        pointer updated) if necessary to accommodate any new
-*        elements.
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*     If simplification was possible, the function returns the index
-*     in the "map_list" array of the first element which was
-*     modified. Otherwise, it returns -1 (and makes no changes to the
-*     arrays supplied).
-
-*  Notes:
-*     - A value of -1 will be returned if this function is invoked
-*     with the global error status set, or if it should fail for any
-*     reason.
-*/
-
-/* Local Variables: */
-   AstFrame *frm1;
-   AstFrame *frm2;
-   AstMapping *smap;
-   AstNormMap *map;
-   AstNormMap *nmap1;
-   AstNormMap *nmap2;
-   int cancel;
-   int map_inv;
-   int nax;
-   int result;
-
-/* Initialise. */
-   result = -1;
-
-/* Check the inherited status. */
-   if ( !astOK ) return result;
-
-/* Initialisation to avoid compiler warnings. */
-   nax = 0;
-
-/* Get a pointer to this NormMap. */
-   map = (AstNormMap *) this;
-
-/* Temporarily set its Invert flag to the requested value. */
-   map_inv = astGetInvert( map );
-   astSetInvert( map, ( *invert_list )[ where ] );
-
-/* First try to simplify the NormMap by simplifying its encapsulated
-   Frame. */
-   smap = astSimplify( map->frame );
-
-/* If any simplification took place, create a new NormMap with the
-   simplified Frame. */
-   if( smap != (AstMapping *) map->frame ) {
-      (void) astAnnul( ( *map_list )[ where ] );
-      ( *map_list )[ where ] = (AstMapping *) astNormMap( (AstFrame *) smap, "", status );
-      result = where;
-
-/* The only other simplication which can be performed is to cancel a NormMap
-   with its own inverse in series. */
-   } else if( series ) {
-
-/* Indicate we have nothing to cancel with as yet. */
-      cancel = -1;
-
-/* First consider the lower neighbour. */
-      if( where > 0 && astIsANormMap( ( *map_list )[ where - 1 ] ) ) {
-
-/* Check the Invert flags are opposite */
-         if( ( *invert_list )[ where ] != ( *invert_list )[ where - 1 ] ) {
-            nmap1 = map;
-            nmap2 = (AstNormMap *) ( *map_list )[ where - 1 ];
-
-/* Check the encapsulated Frames are equal. */
-            frm1 = nmap1->frame;
-            frm2 = nmap2->frame;
-            if( astEqual( frm1, frm2 ) ) cancel = where - 1;
-            nax = astGetNout( nmap1 );
-         }
-      }
-
-/* Likewise consider the upper neighbour. */
-      if( cancel == -1 && where + 1 < *nmap &&
-          astIsANormMap( ( *map_list )[ where + 1 ] ) ) {
-
-         if( ( *invert_list )[ where ] != ( *invert_list )[ where + 1 ] ) {
-            nmap1 = map;
-            nmap2 = (AstNormMap *) ( *map_list )[ where + 1 ];
-            frm1 = nmap1->frame;
-            frm2 = nmap2->frame;
-            if( astEqual( frm1, frm2 ) ) cancel = where + 1;
-            nax = astGetNin( nmap1 );
-         }
-      }
-
-/* If we can cancel with a neightbour, do so. */
-      if( cancel != -1 ) {
-         (void) astAnnul( ( *map_list )[ where ] );
-         (void) astAnnul( ( *map_list )[ cancel ] );
-         ( *map_list )[ where ] = (AstMapping *) astUnitMap( nax, "", status );
-         ( *invert_list )[ where ] = 0;
-         ( *map_list )[ cancel ] = (AstMapping *) astUnitMap( nax, "", status );
-         ( *invert_list )[ cancel ] = 0;
-          result = ( cancel < where ) ? cancel : where;
-      }
-   }
-
-/* Free resources. */
-   smap = astAnnul( smap );
-
-/* Reset the original Invert attribute for the specified NormMap */
-   astSetInvert( map, map_inv );
-
-/* If an error occurred, clear the result value. */
-   if ( !astOK ) result = -1;
-
-/* Return the result. */
-   return result;
-}
-
-static int *MapSplit( AstMapping *this_map, int nin, const int *in, AstMapping **map, int *status ){
-/*
-*  Name:
-*     MapSplit
-
-*  Purpose:
-*     Create a Mapping representing a subset of the inputs of an existing
-*     NormMap.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     int *MapSplit( AstMapping *this, int nin, const int *in, AstMapping **map, int *status )
-
-*  Class Membership:
-*     NormMap method (over-rides the protected astMapSplit method
-*     inherited from the Mapping class).
-
-*  Description:
-*     This function creates a new Mapping by picking specified inputs from
-*     an existing NormMap. This is only possible if the specified inputs
-*     correspond to some subset of the NormMap outputs. That is, there
-*     must exist a subset of the NormMap outputs for which each output
-*     depends only on the selected NormMap inputs, and not on any of the
-*     inputs which have not been selected. If this condition is not met
-*     by the supplied NormMap, then a NULL Mapping is returned.
-
-*  Parameters:
-*     this
-*        Pointer to the NormMap to be split (the NormMap is not actually
-*        modified by this function).
-*     nin
-*        The number of inputs to pick from "this".
-*     in
-*        Pointer to an array of indices (zero based) for the inputs which
-*        are to be picked. This array should have "nin" elements. If "Nin"
-*        is the number of inputs of the supplied NormMap, then each element
-*        should have a value in the range zero to Nin-1.
-*     map
-*        Address of a location at which to return a pointer to the new
-*        Mapping. This Mapping will have "nin" inputs (the number of
-*        outputs may be different to "nin"). A NULL pointer will be
-*        returned if the supplied NormMap has no subset of outputs which
-*        depend only on the selected inputs.
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*     A pointer to a dynamically allocated array of ints. The number of
-*     elements in this array will equal the number of outputs for the
-*     returned Mapping. Each element will hold the index of the
-*     corresponding output in the supplied NormMap. The array should be
-*     freed using astFree when no longer needed. A NULL pointer will
-*     be returned if no output Mapping can be created.
-
-*  Notes:
-*     - If this function is invoked with the global error status set,
-*     or if it should fail for any reason, then NULL values will be
-*     returned as the function value and for the "map" pointer.
-*/
-
-/* Local Variables: */
-   AstFrame *frm2;            /* Pointer to new Frame */
-   AstNormMap *this;          /* Pointer to NormMap structure */
-   int *result;               /* Pointer to returned array */
-
-/* Initialise */
-   result = NULL;
-   *map = NULL;
-
-/* Check the global error status. */
-   if ( !astOK ) return result;
-
-/* Invoke the parent astMapSplit method to see if it can do the job. */
-   result = (*parent_mapsplit)( this_map, nin, in, map, status );
-
-/* If not, we provide a special implementation here. */
-   if( !result ) {
-
-/* Get a pointer to the NormMap structure. */
-      this = (AstNormMap *) this_map;
-
-/* Pick the requried axes from the encapsulated Frame. */
-      frm2 = astPickAxes( this->frame, nin, in, NULL );
-
-/* Create a new NormMap from this. */
-      *map = (AstMapping *) astNormMap( frm2, "", status );
-
-/* The returned list of output axes is a copy the supplied list of input
-   axes. */
-      result = astStore( NULL, in, sizeof( int )*(size_t) nin );
-
-/* Free resources. */
-      frm2 = astAnnul( frm2 );
-   }
-
-/* Free returned resources if an error has occurred. */
-   if( !astOK ) {
-      result = astFree( result );
-      *map = astAnnul( *map );
-   }
-
-/* Return the list of output indices. */
-   return result;
-}
-
-static double Rate( AstMapping *this, double *at, int ax1, int ax2, int *status ){
-/*
-*  Name:
-*     Rate
-
-*  Purpose:
-*     Calculate the rate of change of a Mapping output.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     result = Rate( AstMapping *this, double *at, int ax1, int ax2, int *status )
-
-*  Class Membership:
-*     NormMap member function (overrides the astRate method inherited
-*     from the Mapping class ).
-
-*  Description:
-*     This function returns the rate of change of a specified output of
-*     the supplied Mapping with respect to a specified input, at a
-*     specified input position.
-
-*  Parameters:
-*     this
-*        Pointer to the Mapping to be applied.
-*     at
-*        The address of an array holding the axis values at the position
-*        at which the rate of change is to be evaluated. The number of
-*        elements in this array should equal the number of inputs to the
-*        Mapping.
-*     ax1
-*        The index of the Mapping output for which the rate of change is to
-*        be found (output numbering starts at 0 for the first output).
-*     ax2
-*        The index of the Mapping input which is to be varied in order to
-*        find the rate of change (input numbering starts at 0 for the first
-*        input).
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*     The rate of change of Mapping output "ax1" with respect to input
-*     "ax2", evaluated at "at", or AST__BAD if the value cannot be
-*     calculated.
-
-*/
-
-   return ( ax1 == ax2 ) ? 1.0 : 0.0;
-}
-
-static AstMapping *RemoveRegions( AstMapping *this_mapping, int *status ) {
-/*
-*  Name:
-*     RemoveRegions
-
-*  Purpose:
-*     Remove any Regions from a Mapping.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     AstMapping *RemoveRegions( AstMapping *this, int *status )
-
-*  Class Membership:
-*     NormMap method (over-rides the astRemoveRegions method inherited
-*     from the Mapping class).
-
-*  Description:
-*     This function searches the supplied Mapping (which may be a
-*     compound Mapping such as a CmpMap) for any component Mappings
-*     that are instances of the AST Region class. It then creates a new
-*     Mapping from which all Regions have been removed. If a Region
-*     cannot simply be removed (for instance, if it is a component of a
-*     parallel CmpMap), then it is replaced with an equivalent UnitMap
-*     in the returned Mapping.
-*
-*     The implementation provided by the NormMap class invokes the
-*     astRemoveRegions method on the encapsulated Frame, and returns a
-*     new NormMap containing the resulting Frame.
-
-*  Parameters:
-*     this
-*        Pointer to the original Region.
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*     A pointer to the modified mapping.
-
-*  Notes:
-*     - A NULL pointer value will be returned if this function is
-*     invoked with the AST error status set, or if it should fail for
-*     any reason.
-*/
-
-/* Local Variables: */
-   AstFrame *newfrm;             /* New component Frame */
-   AstMapping *result;           /* Result pointer to return */
-   AstNormMap *new;              /* Pointer to new MormMap */
-   AstNormMap *this;             /* Pointer to NormMap structure */
-
-/* Initialise. */
-   result = NULL;
-
-/* Check the global error status. */
-   if ( !astOK ) return result;
-
-/* Get a pointer to the NormMap. */
-   this = (AstNormMap *) this_mapping;
-
-/* Invoke the astRemoveRegions method on the component Frame. */
-   newfrm = astRemoveRegions( this->frame );
-
-/* If the Frame was not modified, just return a clone of the supplied
-   pointer. */
-   if( this->frame == newfrm ) {
-      result = astClone( this );
-
-/* Otherwise, we need to create a new NormMap to return. We take a deep
-   copy of the supplied NormMap and then modify the Frame so that we
-   retain any extra information in the supplied NormMap. */
-   } else {
-      new = astCopy( this );
-      (void) astAnnul( new->frame );
-      new->frame = astClone( newfrm );
-      result = (AstMapping *) new;
-   }
-
-/* Free resources. */
-   newfrm = astAnnul( newfrm );
-
-/* Annul the returned Mapping if an error has occurred. */
-   if( !astOK ) result = astAnnul( result );
-
-/* Return the result. */
-   return result;
-}
-
-static AstPointSet *Transform( AstMapping *this, AstPointSet *in,
-                               int forward, AstPointSet *out, int *status ) {
-/*
-*  Name:
-*     Transform
-
-*  Purpose:
-*     Apply a NormMap to transform a set of points.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     AstPointSet *Transform( AstMapping *this, AstPointSet *in,
-*                             int forward, AstPointSet *out, int *status )
-
-*  Class Membership:
-*     NormMap member function (over-rides the astTransform protected
-*     method inherited from the Mapping class).
-
-*  Description:
-*     This function takes a NormMap and a set of points encapsulated in a
-*     PointSet and transforms the points so as to apply the required zoom
-*     factor.
-
-*  Parameters:
-*     this
-*        Pointer to the NormMap.
-*     in
-*        Pointer to the PointSet holding the input coordinate data.
-*     forward
-*        A non-zero value indicates that the forward coordinate transformation
-*        should be applied, while a zero value requests the inverse
-*        transformation.
-*     out
-*        Pointer to a PointSet which will hold the transformed (output)
-*        coordinate values. A NULL value may also be given, in which case a
-*        new PointSet will be created by this function.
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*     Pointer to the output (possibly new) PointSet.
-
-*  Notes:
-*     -  A null pointer will be returned if this function is invoked with the
-*     global error status set, or if it should fail for any reason.
-*     -  The number of coordinate values per point in the input PointSet must
-*     match the number of coordinates for the NormMap being applied.
-*     -  If an output PointSet is supplied, it must have space for sufficient
-*     number of points and coordinate values per point to accommodate the
-*     result. Any excess space will be ignored.
-*/
-
-/* Local Variables: */
-   AstPointSet *result;          /* Pointer to output PointSet */
-   AstNormMap *map;              /* Pointer to NormMap to be applied */
-   double **ptr_in;              /* Pointer to input coordinate data */
-   double **ptr_out;             /* Pointer to output coordinate data */
-   double *work;                 /* Work space for a single point */
-   int coord;                    /* Loop counter for coordinates */
-   int ncoord_in;                /* Number of coordinates per input point */
-   int npoint;                   /* Number of points */
-   int point;                    /* Loop counter for points */
-
-/* Check the global error status. */
-   if ( !astOK ) return NULL;
-
-/* Obtain a pointer to the NormMap. */
-   map = (AstNormMap *) this;
-
-/* Apply the parent mapping using the stored pointer to the Transform member
-   function inherited from the parent Mapping class. This function validates
-   all arguments and generates an output PointSet if necessary, but does not
-   actually transform any coordinate values. */
-   result = (*parent_transform)( this, in, forward, out, status );
-
-/* We will now extend the parent astTransform method by performing the
-   calculations needed to generate the output coordinate values. */
-
-/* Determine the numbers of points and coordinates per point from the input
-   PointSet and obtain pointers for accessing the input and output coordinate
-   values. */
-   ncoord_in = astGetNcoord( in );
-   npoint = astGetNpoint( in );
-   ptr_in = astGetPoints( in );
-   ptr_out = astGetPoints( result );
-   work = astMalloc( sizeof( double )* ncoord_in );
-
-/* Perform coordinate arithmetic. */
-/* ------------------------------ */
-   if ( astOK ) {
-      for ( point = 0; point < npoint; point++ ) {
-         for ( coord = 0; coord < ncoord_in; coord++ ) {
-            work[ coord ] = ptr_in[ coord ][ point ];
-         }
-         astNorm( map->frame, work );
-         for ( coord = 0; coord < ncoord_in; coord++ ) {
-            ptr_out[ coord ][ point ] = work[ coord ];
-         }
-      }
-   }
-
-/* Free resources */
-   work = astFree( work );
-
-/* Return a pointer to the output PointSet. */
-   return result;
-}
-
-/* Functions which access class attributes. */
-/* ---------------------------------------- */
-/* Implement member functions to access the attributes associated with
-   this class using the macros defined for this purpose in the
-   "object.h" file. For a description of each attribute, see the class
-   interface (in the associated .h file). */
-
-/* Copy constructor. */
-/* ----------------- */
-static void Copy( const AstObject *objin, AstObject *objout, int *status ) {
-/*
-*  Name:
-*     Copy
-
-*  Purpose:
-*     Copy constructor for NormMap objects.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     void Copy( const AstObject *objin, AstObject *objout, int *status )
-
-*  Description:
-*     This function implements the copy constructor for NormMap objects.
-
-*  Parameters:
-*     objin
-*        Pointer to the object to be copied.
-*     objout
-*        Pointer to the object being constructed.
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*     void
-
-*  Notes:
-*     -  This constructor makes a deep copy, including a copy of the
-*     Frame within the NormMap.
-*/
-
-/* Local Variables: */
-   AstNormMap *in;                /* Pointer to input NormMap */
-   AstNormMap *out;               /* Pointer to output NormMap */
-
-/* Check the global error status. */
-   if ( !astOK ) return;
-
-   in = (AstNormMap *) objin;
-   out = (AstNormMap *) objout;
-   out->frame = astCopy( in->frame );
-}
-
-/* Destructor. */
-/* ----------- */
-static void Delete( AstObject *obj, int *status ) {
-/*
-*  Name:
-*     Delete
-
-*  Purpose:
-*     Destructor for NormMap objects.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     void Delete( AstObject *obj, int *status )
-
-*  Description:
-*     This function implements the destructor for NormMap objects.
-
-*  Parameters:
-*     obj
-*        Pointer to the object to be deleted.
-*     status
-*        Pointer to the inherited status variable.
-
-*  Returned Value:
-*     void
-
-*  Notes:
-*     This function attempts to execute even if the global error status is
-*     set.
-*/
-
-/* Local Variables: */
-   AstNormMap *this;              /* Pointer to NormMap */
-
-   this = (AstNormMap *) obj;
-   this->frame = astAnnul( this->frame );
-
-}
-
-/* Dump function. */
-/* -------------- */
-static void Dump( AstObject *this_object, AstChannel *channel, int *status ) {
-/*
-*  Name:
-*     Dump
-
-*  Purpose:
-*     Dump function for NormMap objects.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     void Dump( AstObject *this, AstChannel *channel, int *status )
-
-*  Description:
-*     This function implements the Dump function which writes out data
-*     for the NormMap class to an output Channel.
-
-*  Parameters:
-*     this
-*        Pointer to the NormMap whose data are being written.
-*     channel
-*        Pointer to the Channel to which the data are being written.
-*     status
-*        Pointer to the inherited status variable.
-*/
-
-/* Local Variables: */
-   AstNormMap *this;             /* Pointer to the NormMap structure */
-
-/* Check the global error status. */
-   if ( !astOK ) return;
-
-/* Obtain a pointer to the NormMap structure. */
-   this = (AstNormMap *) this_object;
-
-/* Write out values representing the instance variables for the
-   NormMap class.  Accompany these with appropriate comment strings,
-   possibly depending on the values being written.*/
-
-/* Frame. */
-/* ------ */
-   astWriteObject( channel, "Frame", 1, 1, this->frame,
-                   "Frame defining the normalisation" );
-}
-
-/* Standard class functions. */
-/* ========================= */
-/* Implement the astIsANormMap and astCheckNormMap functions using the macros
-   defined for this purpose in the "object.h" header file. */
-astMAKE_ISA(NormMap,Mapping)
-astMAKE_CHECK(NormMap)
-
-AstNormMap *astNormMap_( void *frame_void, const char *options, int *status, ...) {
-/*
-*++
-*  Name:
-c     astNormMap
-f     AST_NORMMAP
-
-*  Purpose:
-*     Create a NormMap.
-
-*  Type:
-*     Public function.
-
-*  Synopsis:
-c     #include "normmap.h"
-c     AstNormMap *astNormMap( AstFrame *frame, const char *options, ... )
-f     RESULT = AST_NORMMAP( FRAME, OPTIONS, STATUS )
-
-*  Class Membership:
-*     NormMap constructor.
-
-*  Description:
-*     This function creates a new NormMap and optionally initialises its
-*     attributes.
-*
-*     A NormMap is a Mapping which normalises coordinate values using the
-c     astNorm function
-f     AST_NORM routine
-*     of the supplied Frame. The number of inputs and outputs of a NormMap
-*     are both equal to the number of axes in the supplied Frame.
-*
-*     The forward and inverse transformation of a NormMap are both
-*     defined but are identical (that is, they do not form a real inverse
-*     pair in that the inverse transformation does not undo the
-*     normalisation, instead it reapplies it). However, the
-c     astSimplify
-f     AST_SIMPLIFY
-*     function will replace neighbouring pairs of forward and inverse
-*     NormMaps by a single UnitMap.
-
-*  Parameters:
-c     frame
-f     FRAME = INTEGER (Given)
-*        A pointer to the Frame which is to be used to normalise the
-*        supplied axis values.
-c     options
-f     OPTIONS = CHARACTER * ( * ) (Given)
-c        Pointer to a null-terminated string containing an optional
-c        comma-separated list of attribute assignments to be used for
-c        initialising the new NormMap. The syntax used is identical to
-c        that for the astSet function and may include "printf" format
-c        specifiers identified by "%" symbols in the normal way.
-f        A character string containing an optional comma-separated
-f        list of attribute assignments to be used for initialising the
-f        new NormMap. The syntax used is identical to that for the
-f        AST_SET routine.
-c     ...
-c        If the "options" string contains "%" format specifiers, then
-c        an optional list of additional arguments may follow it in
-c        order to supply values to be substituted for these
-c        specifiers. The rules for supplying these are identical to
-c        those for the astSet function (and for the C "printf"
-c        function).
-f     STATUS = INTEGER (Given and Returned)
-f        The global status.
-
-*  Returned Value:
-c     astNormMap()
-f     AST_NORMMAP = INTEGER
-*        A pointer to the new NormMap.
-
-*  Notes:
-*     - A null Object pointer (AST__NULL) will be returned if this
-c     function is invoked with the AST error status set, or if it
-f     function is invoked with STATUS set to an error value, or if it
-*     should fail for any reason.
-
-*  Status Handling:
-*     The protected interface to this function includes an extra
-*     parameter at the end of the parameter list descirbed above. This
-*     parameter is a pointer to the integer inherited status
-*     variable: "int *status".
-
-*--
-*/
-
-/* Local Variables: */
-   astDECLARE_GLOBALS            /* Pointer to thread-specific global data */
-   AstFrame *frame;              /* The Frame pointer */
-   AstNormMap *new;              /* Pointer to new NormMap */
-   va_list args;                 /* Variable argument list */
-
-/* Get a pointer to the thread specific global data structure. */
-   astGET_GLOBALS(NULL);
-
-/* Check the global status. */
-   if ( !astOK ) return NULL;
-
-/* Obtain and validate pointers to the Frame structures provided. */
-   frame = astCheckFrame( frame_void );
-
-/* Initialise the NormMap, allocating memory and initialising the
-   virtual function table as well if necessary. */
-   new = astInitNormMap( NULL, sizeof( AstNormMap ), !class_init, &class_vtab,
-                         "NormMap", frame );
-   if( astOK ) {
-
-/* If successful, note that the virtual function table has been
-   initialised. */
-      if ( astOK ) {
-         class_init = 1;
-
-/* Obtain the variable argument list and pass it along with the options string
-   to the astVSet method to initialise the new NormMap's attributes. */
-         va_start( args, status );
-         astVSet( new, options, NULL, args );
-         va_end( args );
-
-/* If an error occurred, clean up by deleting the new object. */
-         if ( !astOK ) new = astDelete( new );
-      }
-   }
-
-/* Return a pointer to the new NormMap. */
-   return new;
-}
-
-AstNormMap *astNormMapId_( void *frame_void, const char *options, ... ) {
-/*
-*  Name:
-*     astNormMapId_
-
-*  Purpose:
-*     Create a NormMap.
-
-*  Type:
-*     Private function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     AstNormMap *astNormMapId_( int ncoord, double zoom,
-*                                const char *options, ... )
-
-*  Class Membership:
-*     NormMap constructor.
-
-*  Description:
-*     This function implements the external (public) interface to the
-*     astNormMap constructor function. It returns an ID value (instead
-*     of a true C pointer) to external users, and must be provided
-*     because astNormMap_ has a variable argument list which cannot be
-*     encapsulated in a macro (where this conversion would otherwise
-*     occur).
-*
-*     The variable argument list also prevents this function from
-*     invoking astNormMap_ directly, so it must be a re-implementation
-*     of it in all respects, except for the final conversion of the
-*     result to an ID value.
-
-*  Parameters:
-*     As for astNormMap_.
-
-*  Returned Value:
-*     The ID value associated with the new NormMap.
-*/
-
-/* Local Variables: */
-   astDECLARE_GLOBALS            /* Pointer to thread-specific global data */
-   AstFrame *frame;              /* The Frame pointer */
-   AstNormMap *new;              /* Pointer to new NormMap */
-   va_list args;                 /* Variable argument list */
-
-   int *status;                  /* Pointer to inherited status value */
-
-/* Get a pointer to the thread specific global data structure. */
-   astGET_GLOBALS(NULL);
-
-/* Get a pointer to the inherited status value. */
-   status = astGetStatusPtr;
-
-/* Check the global status. */
-   if ( !astOK ) return NULL;
-
-/* Obtain and validate pointers to the Frame structures provided. */
-   frame = astVerifyFrame( astMakePointer( frame_void ) );
-
-/* Initialise the NormMap, allocating memory and initialising the
-   virtual function table as well if necessary. */
-   new = astInitNormMap( NULL, sizeof( AstNormMap ), !class_init, &class_vtab,
-                         "NormMap", frame );
-
-/* If successful, note that the virtual function table has been
-   initialised. */
-   if ( astOK ) {
-      class_init = 1;
-
-/* Obtain the variable argument list and pass it along with the options string
-   to the astVSet method to initialise the new NormMap's attributes. */
-      va_start( args, options );
-      astVSet( new, options, NULL, args );
-      va_end( args );
-
-/* If an error occurred, clean up by deleting the new object. */
-      if ( !astOK ) new = astDelete( new );
-   }
-
-/* Return an ID value for the new NormMap. */
-   return astMakeId( new );
-}
-
-AstNormMap *astInitNormMap_( void *mem, size_t size, int init,
-                             AstNormMapVtab *vtab, const char *name,
-                             AstFrame *frame, int *status ) {
-/*
-*+
-*  Name:
-*     astInitNormMap
-
-*  Purpose:
-*     Initialise a NormMap.
-
-*  Type:
-*     Protected function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     AstNormMap *astInitNormMap( void *mem, size_t size, int init,
-*                                 AstNormMapVtab *vtab, const char *name,
-*                                 AstFrame *frame )
-
-*  Class Membership:
-*     NormMap initialiser.
-
-*  Description:
-*     This function is provided for use by class implementations to initialise
-*     a new NormMap object. It allocates memory (if necessary) to accommodate
-*     the NormMap plus any additional data associated with the derived class.
-*     It then initialises a NormMap structure at the start of this memory. If
-*     the "init" flag is set, it also initialises the contents of a virtual
-*     function table for a NormMap at the start of the memory passed via the
-*     "vtab" parameter.
-
-*  Parameters:
-*     mem
-*        A pointer to the memory in which the NormMap is to be initialised.
-*        This must be of sufficient size to accommodate the NormMap data
-*        (sizeof(NormMap)) plus any data used by the derived class. If a value
-*        of NULL is given, this function will allocate the memory itself using
-*        the "size" parameter to determine its size.
-*     size
-*        The amount of memory used by the NormMap (plus derived class data).
-*        This will be used to allocate memory if a value of NULL is given for
-*        the "mem" parameter. This value is also stored in the NormMap
-*        structure, so a valid value must be supplied even if not required for
-*        allocating memory.
-*     init
-*        A logical flag indicating if the NormMap's virtual function table is
-*        to be initialised. If this value is non-zero, the virtual function
-*        table will be initialised by this function.
-*     vtab
-*        Pointer to the start of the virtual function table to be associated
-*        with the new NormMap.
-*     name
-*        Pointer to a constant null-terminated character string which contains
-*        the name of the class to which the new object belongs (it is this
-*        pointer value that will subsequently be returned by the astGetClass
-*        method).
-*     frame
-*        The Frame to use to do the normalisations.
-
-*  Returned Value:
-*     A pointer to the new NormMap.
-
-*  Notes:
-*     -  A null pointer will be returned if this function is invoked with the
-*     global error status set, or if it should fail for any reason.
-*-
-*/
-
-/* Local Variables: */
-   AstNormMap *new;              /* Pointer to new NormMap */
-   int ncoord;                   /* Number of input and output coords */
-
-/* Check the global status. */
-   if ( !astOK ) return NULL;
-
-/* If necessary, initialise the virtual function table. */
-   if ( init ) astInitNormMapVtab( vtab, name );
-
-/* Initialise. */
-   new = NULL;
-
-/* Get the number of axes in the Frame. */
-   ncoord = astGetNaxes( frame );
-
-/* Initialise a Mapping structure (the parent class) as the first component
-   within the NormMap structure, allocating memory if necessary. Specify that
-   the Mapping should be defined in both the forward and inverse directions. */
-   new = (AstNormMap *) astInitMapping( mem, size, 0,
-                                        (AstMappingVtab *) vtab, name,
-                                        ncoord, ncoord, 1, 1 );
-
-   if ( astOK ) {
-
-/* Initialise the NormMap data. */
-/* ---------------------------- */
-/* Store a pointer to the Frame. */
-      new->frame = astClone( frame );
-
-/* If an error occurred, clean up by deleting the new NormMap. */
-      if ( !astOK ) new = astDelete( new );
-   }
-
-/* Return a pointer to the new NormMap. */
-   return new;
-}
-
-AstNormMap *astLoadNormMap_( void *mem, size_t size,
-                             AstNormMapVtab *vtab, const char *name,
-                             AstChannel *channel, int *status ) {
-/*
-*+
-*  Name:
-*     astLoadNormMap
-
-*  Purpose:
-*     Load a NormMap.
-
-*  Type:
-*     Protected function.
-
-*  Synopsis:
-*     #include "normmap.h"
-*     AstNormMap *astLoadNormMap( void *mem, size_t size,
-*                                 AstNormMapVtab *vtab, const char *name,
-*                                 AstChannel *channel )
-
-*  Class Membership:
-*     NormMap loader.
-
-*  Description:
-*     This function is provided to load a new NormMap using data read
-*     from a Channel. It first loads the data used by the parent class
-*     (which allocates memory if necessary) and then initialises a
-*     NormMap structure in this memory, using data read from the input
-*     Channel.
-*
-*     If the "init" flag is set, it also initialises the contents of a
-*     virtual function table for a NormMap at the start of the memory
-*     passed via the "vtab" parameter.
-
-
-*  Parameters:
-*     mem
-*        A pointer to the memory into which the NormMap is to be
-*        loaded.  This must be of sufficient size to accommodate the
-*        NormMap data (sizeof(NormMap)) plus any data used by derived
-*        classes. If a value of NULL is given, this function will
-*        allocate the memory itself using the "size" parameter to
-*        determine its size.
-*     size
-*        The amount of memory used by the NormMap (plus derived class
-*        data).  This will be used to allocate memory if a value of
-*        NULL is given for the "mem" parameter. This value is also
-*        stored in the NormMap structure, so a valid value must be
-*        supplied even if not required for allocating memory.
-*
-*        If the "vtab" parameter is NULL, the "size" value is ignored
-*        and sizeof(AstNormMap) is used instead.
-*     vtab
-*        Pointer to the start of the virtual function table to be
-*        associated with the new NormMap. If this is NULL, a pointer
-*        to the (static) virtual function table for the NormMap class
-*        is used instead.
-*     name
-*        Pointer to a constant null-terminated character string which
-*        contains the name of the class to which the new object
-*        belongs (it is this pointer value that will subsequently be
-*        returned by the astGetClass method).
-*
-*        If the "vtab" parameter is NULL, the "name" value is ignored
-*        and a pointer to the string "NormMap" is used instead.
-
-*  Returned Value:
-*     A pointer to the new NormMap.
-
-*  Notes:
-*     - A null pointer will be returned if this function is invoked
-*     with the global error status set, or if it should fail for any
-*     reason.
-*-
-*/
-
-/* Local Variables: */
-   astDECLARE_GLOBALS            /* Pointer to thread-specific global data */
-   AstNormMap *new;              /* Pointer to the new NormMap */
-
-/* Initialise. */
-   new = NULL;
-
-/* Check the global error status. */
-   if ( !astOK ) return new;
-
-/* Get a pointer to the thread specific global data structure. */
-   astGET_GLOBALS(channel);
-
-/* If a NULL virtual function table has been supplied, then this is
-   the first loader to be invoked for this NormMap. In this case the
-   NormMap belongs to this class, so supply appropriate values to be
-   passed to the parent class loader (and its parent, etc.). */
-   if ( !vtab ) {
-      size = sizeof( AstNormMap );
-      vtab = &class_vtab;
-      name = "NormMap";
-
-/* If required, initialise the virtual function table for this class. */
-      if ( !class_init ) {
-         astInitNormMapVtab( vtab, name );
-         class_init = 1;
-      }
-   }
-
-/* Invoke the parent class loader to load data for all the ancestral
-   classes of the current one, returning a pointer to the resulting
-   partly-built NormMap. */
-   new = astLoadMapping( mem, size, (AstMappingVtab *) vtab, name,
-                         channel );
-
-   if ( astOK ) {
-
-/* Read input data. */
-/* ================ */
-/* Request the input Channel to read all the input data appropriate to
-   this class into the internal "values list". */
-      astReadClassData( channel, "NormMap" );
-
-/* Now read each individual data item from this list and use it to
-   initialise the appropriate instance variable(s) for this class. */
-
-/* In the case of attributes, we first read the "raw" input value,
-   supplying the "unset" value as the default. If a "set" value is
-   obtained, we then use the appropriate (private) Set... member
-   function to validate and set the value properly. */
-
-/* Frame. */
-/* ------ */
-      new->frame = astReadObject( channel, "frame", NULL );
-
-/* If an error occurred, clean up by deleting the new NormMap. */
-      if ( !astOK ) new = astDelete( new );
-   }
-
-/* Return the new NormMap pointer. */
-   return new;
-}
-
-/* Virtual function interfaces. */
-/* ============================ */
-/* These provide the external interface to the virtual functions defined by
-   this class. Each simply checks the global error status and then locates and
-   executes the appropriate member function, using the function pointer stored
-   in the object's virtual function table (this pointer is located using the
-   astMEMBER macro defined in "object.h").
-
-   Note that the member function may not be the one defined here, as it may
-   have been over-ridden by a derived class. However, it should still have the
-   same interface. */
-
-
-
-