An AST program normally has the following structure:
* Include the interface to the AST library. INCLUDE 'AST_PAR' * Declare an integer status variable. INTEGER STATUS <maybe other declarations> * Initialise the status to zero. STATUS = 0 <maybe some Fortran statements> * Enclose the parts which use AST between AST_BEGIN and AST_END calls. CALL AST_BEGIN( STATUS ) <Fortran statements which use AST> CALL AST_END( STATUS ) <maybe more Fortran statements> END
The use of AST_BEGIN and AST_END is optional, but has the effect of
tidying up after you have finished using AST, so is normally
recommended. For more details of this, see . For
details of how to access the AST_PAR include file, see
.
AST A Library for Handling World Coordinate Systems in Astronomy