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 A Library for Handling
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Description: 
 This function stores a supplied arbitrary pointer in
the 
Channel. When a source or sink function is invoked by the Channel, the
invoked function can use the 
astChannelData macro to retrieve the pointer.
This provides a thread-safe alternative to passing file descriptors, etc, via
global static variables.  
Synopsis 
 void astPutChannelData( AstChannel
this, void
data )
 Parameters: 
  this  
 Pointer to the Channel.  
  data  
 A pointer to be made
available to the source and sink functions via the astChannelData macro. May be
NULL.  
    Applicability 
  Channel  
 All Channels have this function.  
    Notes: 
 Copyright (C) 2021 East Asian Observatory
  -  ←Prev 
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 A Library for Handling
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Coordinate Systems
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