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astGetActiveUnit - Determines how the Unit attribute will be used

Description:
This function returns the current value of the ActiveUnit flag for a Frame. See the description of the astSetActiveUnit function for a description of the ActiveUnit flag.
Synopsis:
int astGetActiveUnit( AstFrame $*$this )
Parameters:
this
Pointer to the Frame.
Returned Value:
astGetActiveUnit
The current value of the ActiveUnit flag.
Notes:
  • A zero value will be returned if this function is invoked with the AST error status set, or if it should fail for any reason.


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AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2009 Science \& Technology Facilities Council