upgrade AST

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diff --git a/ast/skyaxis.h b/ast/skyaxis.h
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--- a/ast/skyaxis.h
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@@ -1,428 +0,0 @@
-#if !defined( SKYAXIS_INCLUDED ) /* Include this file only once */
-#define SKYAXIS_INCLUDED
-/*
-*+
-*  Name:
-*     skyaxis.h
-
-*  Type:
-*     C include file.
-
-*  Purpose:
-*     Define the interface to the SkyAxis class.
-
-*  Invocation:
-*     #include "skyaxis.h"
-
-*  Description:
-*     This include file defines the interface to the SkyAxis class and
-*     provides the type definitions, function prototypes and macros,
-*     etc.  needed to use this class.
-*
-*     The SkyAxis class extends the Axis class to represent angles on
-*     the sky measured in radians. It provides alternative formatting
-*     facilities for representing these coordinate values either as
-*     angles (in degrees) or as time (in hours) using sexagesimal
-*     notation. It also provides alternative defaults for certain
-*     attributes and adds new attributes and methods of its own which
-*     are needed to manipulate angular coordinates on the sky.
-
-*  Inheritance:
-*     The SkyAxis class inherits from the Axis class.
-
-*  Attributes Over-Ridden:
-*     Format (string)
-*        The SkyAxis class defines a new syntax for this string.
-*     Label (string)
-*        The SkyAxis class defines new default values. These may
-*        depend on other attribute settings.
-*     Symbol (string)
-*        The SkyAxis class defines new default values. These may
-*        depend on other attribute settings.
-*     Unit (string)
-*        The SkyAxis class defines new default values. These may
-*        depend on other attribute settings.
-
-*  New Attributes Defined:
-*     AsTime (integer)
-*        A boolean value which indicates whether SkyAxis coordinate
-*        values should be formatted for display as times (instead of
-*        angles). It is used to determine the default format to use if
-*        no explicit value has been set for the Format attribute.
-*     CentreZero (integer)
-*        A boolean value which indicates whether a SkyAxis value should
-*        be normalised into the range [-PI,+PI] or [0,2.PI] when astNorm
-*        is used.
-*     IsLatitude (integer)
-*        A boolean value which indicates whether a SkyAxis is a
-*        latitude axis (as opposed to a longitude axis). It is used to
-*        determine default axis labels and symbols. It also determines the
-*        default value for the "AsTime" attribute (since longitudes on
-*        the sky are usually expressed as times).
-
-*  Methods Over-Ridden:
-*     Public:
-*        astAxisFormat
-*           Format a coordinate value for a SkyAxis.
-*        astAxisNorm
-*           Normalise a SkyAxis coordinate value.
-*        astAxisUnformat
-*           Read a formatted coordinate value for a SkyAxis.
-
-*     Protected:
-*        astAxisAbbrev
-*           Abbreviate a formatted SkyAxis value by skipping leading fields.
-*        astAxisDistance
-*           Find the distance between two SkyAxis values.
-*        astAxisGap
-*           Find a "nice" gap for tabulating SkyAxis values.
-*        astClearAxisFormat
-*           Clear the Format attribute for a SkyAxis.
-*        astGetAxisDirection
-*           Obtain the value of the Direction attribute for a SkyAxis.
-*        astGetAxisFormat
-*           Obtain a pointer to the Format attribute for a SkyAxis.
-*        astGetAxisLabel
-*           Obtain a pointer to the Label attribute for a SkyAxis.
-*        astGetAxisSymbol
-*           Obtain a pointer to the Symbol attribute for a SkyAxis.
-*        astGetAxisUnit
-*           Obtain a pointer to the Unit attribute for a SkyAxis.
-*        astSetAxisFormat
-*           Set a value for the Format attribute of a SkyAxis.
-*        astTestAxisFormat
-*           Test if a value has been set for the Format attribute of a SkyAxis.
-*        astAxisOffset
-*           Add an increment onto a supplied SkyAxis value.
-*        astAxisOverlay
-*           Overlay the attributes of a template SkyAxis on to another Axis.
-*        astSetAttrib
-*           Set an attribute value for a SkyAxis.
-
-*  New Methods Defined:
-*     Public:
-*        None.
-
-*     Protected:
-*        astClearAxisAsTime
-*           Clear the AsTime attribute for a SkyAxis.
-*        astClearAxisCentreZero
-*           Clear the CentreZero attribute for a SkyAxis.
-*        astClearAxisIsLatitude
-*           Clear the IsLatitude attribute for a SkyAxis.
-*        astGetAxisAsTime
-*           Obtain the value of the AsTime attribute for a SkyAxis.
-*        astGetAxisIsLatitude
-*           Obtain the value of the IsLatitude attribute for a SkyAxis.
-*        astGetAxisCentreZero
-*           Obtain the value of the CentreZero attribute for a SkyAxis.
-*        astSetAxisAsTime
-*           Set a value for the AsTime attribute of a SkyAxis.
-*        astSetAxisIsLatitude
-*           Set a value for the IsLatitude attribute of a SkyAxis.
-*        astSetAxisCentreZero
-*           Set a value for the CentreZero attribute of a SkyAxis.
-*        astTestAxisAsTime
-*           Test if a value has been set for the AsTime attribute of a SkyAxis.
-*        astTestAxisIsLatitude
-*           Test if a value has been set for the IsLatitude attribute of a
-*           SkyAxis.
-*        astTestAxisCentreZero
-*           Test if a value has been set for the CentreZero attribute of a
-*           SkyAxis.
-
-*  Other Class Functions:
-*     Public:
-*        astIsASkyAxis
-*           Test class membership.
-*        astSkyAxis
-*           Create an SkyAxis.
-
-*     Protected:
-*        astCheckSkyAxis
-*           Validate class membership.
-*        astInitSkyAxis
-*           Initialise an SkyAxis.
-
-*  Macros:
-*     None.
-
-*  Type Definitions:
-*     Public:
-*        AstSkyAxis
-*           SkyAxis object type.
-
-*     Protected:
-*        AstSkyAxisVtab
-*           SkyAxis virtual function table type.
-
-*  Feature Test Macros:
-*     astCLASS
-*        If the astCLASS macro is undefined, only public symbols are
-*        made available, otherwise protected symbols (for use in other
-*        class implementations) are defined. This macro also affects
-*        the reporting of error context information, which is only
-*        provided for external calls to the AST library.
-
-*  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:
-*     RFWS: R.F. Warren-Smith (Starlink)
-
-*  History:
-*     29-MAR-1996 (RFWS):
-*        Original version.
-*     25-APR-1996 (RFWS):
-*        Made all attribute access functions protected.
-*     13-MAY-1996 (RFWS):
-*        Documented over-riding of the astGetAxisDirection method.
-*     26-FEB-1998 (RFWS):
-*        Over-ride the astAxisUnformat method.
-*     8-JAN-2003 (DSB):
-*        Added protected astInitSkyAxisVtab method.
-*-
-*/
-
-/* Include files. */
-/* ============== */
-/* Interface definitions. */
-/* ---------------------- */
-#include "axis.h"                /* Coordinate axes (parent class) */
-
-/* Macros */
-/* ====== */
-
-/* Define constants used to size global arrays in this module. */
-/* Define numerical constants for use in thie module. */
-#define AST__SKYAXIS_GETAXISFORMAT_BUFF_LEN 50
-#define AST__SKYAXIS_DHMSFORMAT_BUFF_LEN 70
-#define AST__SKYAXIS_DHMSUNIT_BUFF_LEN 17
-#define AST__SKYAXIS_GETATTRIB_BUFF_LEN 50
-
-/* Define a dummy __attribute__ macro for use on non-GNU compilers. */
-#ifndef __GNUC__
-#  define  __attribute__(x)  /*NOTHING*/
-#endif
-
-
-/* Type Definitions. */
-/* ================= */
-/* SkyAxis structure. */
-/* ------------------ */
-/* This structure contains all information that is unique to each
-   object in the class (e.g. its instance variables). */
-typedef struct AstSkyAxis {
-
-/* Attributes inherited from the parent class. */
-   AstAxis axis;                 /* Parent class structure */
-
-/* Attributes specific to objects in this class. */
-   char *skyformat;              /* Pointer to sky format string */
-   int as_time;                  /* Format angles as time (hours)? */
-   int is_latitude;              /* SkyAxis is a latitude axis? */
-   int centrezero;               /* Normalised range is zero-centred? */
-} AstSkyAxis;
-
-/* Virtual function table. */
-/* ----------------------- */
-/* This table contains all information that is the same for all
-   objects in the class (e.g. pointers to its virtual functions). */
-#if defined(astCLASS)            /* Protected */
-typedef struct AstSkyAxisVtab {
-
-/* Properties (e.g. methods) inherited from the parent class. */
-   AstAxisVtab axis_vtab;        /* Parent class virtual function table */
-
-/* A Unique identifier to determine class membership. */
-   AstClassIdentifier id;
-
-/* Properties (e.g. methods) specific to this class. */
-   int (* GetAxisAsTime)( AstSkyAxis *, int * );
-   int (* GetAxisIsLatitude)( AstSkyAxis *, int * );
-   int (* GetAxisCentreZero)( AstSkyAxis *, int * );
-   int (* TestAxisAsTime)( AstSkyAxis *, int * );
-   int (* TestAxisIsLatitude)( AstSkyAxis *, int * );
-   int (* TestAxisCentreZero)( AstSkyAxis *, int * );
-   void (* ClearAxisAsTime)( AstSkyAxis *, int * );
-   void (* ClearAxisIsLatitude)( AstSkyAxis *, int * );
-   void (* ClearAxisCentreZero)( AstSkyAxis *, int * );
-   void (* SetAxisAsTime)( AstSkyAxis *, int, int * );
-   void (* SetAxisIsLatitude)( AstSkyAxis *, int, int * );
-   void (* SetAxisCentreZero)( AstSkyAxis *, int, int * );
-} AstSkyAxisVtab;
-
-#if defined(THREAD_SAFE)
-
-/* Define a structure holding all data items that are global within this
-   class. */
-typedef struct AstSkyAxisGlobals {
-   AstSkyAxisVtab Class_Vtab;
-   int Class_Init;
-   char DHmsFormat_Buff[ AST__SKYAXIS_DHMSFORMAT_BUFF_LEN + 1 ];
-   char DHmsUnit_Buff[ AST__SKYAXIS_DHMSUNIT_BUFF_LEN + 1 ];
-   char GetAttrib_Buff[ AST__SKYAXIS_GETATTRIB_BUFF_LEN + 1 ];
-   char GetAxisFormat_Buff[ AST__SKYAXIS_GETAXISFORMAT_BUFF_LEN + 1 ];
-   char *GhDelim;
-   char *GmDelim;
-   char *GsDelim;
-   char *GdDelim;
-   char *GamDelim;
-   char *GasDelim;
-} AstSkyAxisGlobals;
-
-#endif
-
-
-#endif
-
-/* Function prototypes. */
-/* ==================== */
-/* Prototypes for standard class functions. */
-/* ---------------------------------------- */
-astPROTO_CHECK(SkyAxis)          /* Check class membership */
-astPROTO_ISA(SkyAxis)            /* Test class membership */
-
-/* Constructor. */
-#if defined(astCLASS)            /* Protected. */
-AstSkyAxis *astSkyAxis_( const char *, int *, ...);
-#else
-AstSkyAxis *astSkyAxisId_( const char *, ... )__attribute__((format(printf,1,2)));
-#endif
-
-#if defined(astCLASS)            /* Protected */
-
-/* Initialiser. */
-AstSkyAxis *astInitSkyAxis_( void *, size_t, int, AstSkyAxisVtab *,
-                             const char *, int * );
-
-/* Vtab initialiser. */
-void astInitSkyAxisVtab_( AstSkyAxisVtab *, const char *, int * );
-
-/* Loader. */
-AstSkyAxis *astLoadSkyAxis_( void *, size_t, AstSkyAxisVtab *,
-                             const char *, AstChannel *, int * );
-
-/* Thread-safe initialiser for all global data used by this module. */
-#if defined(THREAD_SAFE)
-void astInitSkyAxisGlobals_( AstSkyAxisGlobals * );
-#endif
-
-#endif
-
-/* Prototypes for member functions. */
-/* -------------------------------- */
-#if defined(astCLASS)            /* Protected */
-int astGetAxisAsTime_( AstSkyAxis *, int * );
-int astGetAxisIsLatitude_( AstSkyAxis *, int * );
-int astGetAxisCentreZero_( AstSkyAxis *, int * );
-int astTestAxisAsTime_( AstSkyAxis *, int * );
-int astTestAxisIsLatitude_( AstSkyAxis *, int * );
-int astTestAxisCentreZero_( AstSkyAxis *, int * );
-void astClearAxisAsTime_( AstSkyAxis *, int * );
-void astClearAxisIsLatitude_( AstSkyAxis *, int * );
-void astClearAxisCentreZero_( AstSkyAxis *, int * );
-void astSetAxisAsTime_( AstSkyAxis *, int, int * );
-void astSetAxisIsLatitude_( AstSkyAxis *, int, int * );
-void astSetAxisCentreZero_( AstSkyAxis *, int, int * );
-
-#endif
-
-/* Function interfaces. */
-/* ==================== */
-/* These macros are wrap-ups for the functions defined by this class
-   to make them easier to invoke (e.g. to avoid type mis-matches when
-   passing pointers to objects from derived classes). */
-
-/* Interfaces to standard class functions. */
-/* --------------------------------------- */
-/* Some of these functions provide validation, so we cannot use them
-   to validate their own arguments. We must use a cast when passing
-   object pointers (so that they can accept objects from derived
-   classes). */
-
-/* Check class membership. */
-#define astCheckSkyAxis(this) astINVOKE_CHECK(SkyAxis,this,0)
-#define astVerifySkyAxis(this) astINVOKE_CHECK(SkyAxis,this,1)
-
-/* Test class membership. */
-#define astIsASkyAxis(this) astINVOKE_ISA(SkyAxis,this)
-
-/* Constructor. */
-#if defined(astCLASS)            /* Protected. */
-#define astSkyAxis astINVOKE(F,astSkyAxis_)
-#else
-#define astSkyAxis astINVOKE(F,astSkyAxisId_)
-#endif
-
-#if defined(astCLASS)            /* Protected */
-
-/* Initialiser. */
-#define astInitSkyAxis(mem,size,init,vtab,name) \
-astINVOKE(O,astInitSkyAxis_(mem,size,init,vtab,name,STATUS_PTR))
-
-/* Vtab Initialiser. */
-#define astInitSkyAxisVtab(vtab,name) astINVOKE(V,astInitSkyAxisVtab_(vtab,name,STATUS_PTR))
-/* Loader. */
-#define astLoadSkyAxis(mem,size,vtab,name,channel) \
-astINVOKE(O,astLoadSkyAxis_(mem,size,vtab,name,astCheckChannel(channel),STATUS_PTR))
-#endif
-
-/* Interfaces to public member functions. */
-/* -------------------------------------- */
-
-/* Here we make use of astCheckSkyAxis to validate SkyAxis pointers
-   before use. This provides a contextual error report if a pointer to
-   the wrong sort of object is supplied. */
-#if defined(astCLASS)            /* Protected */
-
-#define astClearAxisAsTime(this) \
-astINVOKE(V,astClearAxisAsTime_(astCheckSkyAxis(this),STATUS_PTR))
-#define astClearAxisIsLatitude(this) \
-astINVOKE(V,astClearAxisIsLatitude_(astCheckSkyAxis(this),STATUS_PTR))
-#define astGetAxisAsTime(this) \
-astINVOKE(V,astGetAxisAsTime_(astCheckSkyAxis(this),STATUS_PTR))
-#define astGetAxisIsLatitude(this) \
-astINVOKE(V,astGetAxisIsLatitude_(astCheckSkyAxis(this),STATUS_PTR))
-#define astSetAxisAsTime(this,value) \
-astINVOKE(V,astSetAxisAsTime_(astCheckSkyAxis(this),value,STATUS_PTR))
-#define astSetAxisIsLatitude(this,value) \
-astINVOKE(V,astSetAxisIsLatitude_(astCheckSkyAxis(this),value,STATUS_PTR))
-#define astTestAxisAsTime(this) \
-astINVOKE(V,astTestAxisAsTime_(astCheckSkyAxis(this),STATUS_PTR))
-#define astTestAxisIsLatitude(this) \
-astINVOKE(V,astTestAxisIsLatitude_(astCheckSkyAxis(this),STATUS_PTR))
-
-#define astClearAxisCentreZero(this) \
-astINVOKE(V,astClearAxisCentreZero_(astCheckSkyAxis(this),STATUS_PTR))
-#define astGetAxisCentreZero(this) \
-astINVOKE(V,astGetAxisCentreZero_(astCheckSkyAxis(this),STATUS_PTR))
-#define astSetAxisCentreZero(this,value) \
-astINVOKE(V,astSetAxisCentreZero_(astCheckSkyAxis(this),value,STATUS_PTR))
-#define astTestAxisCentreZero(this) \
-astINVOKE(V,astTestAxisCentreZero_(astCheckSkyAxis(this),STATUS_PTR))
-
-#endif
-#endif
-
-
-
-
-