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Description: 
This function returns the order and 
" npix
" value for the cell at a specified
index in the normalised 
Moc. See the MOC recommendation for more information
about 
" npix
" values and MOC normalisation.  
Synopsis 
 void astGetCell( AstMoc
this, int icell,
int order,
int64_t npix
)  
 Parameters: 
  this  
 Pointer to the Moc to be modified.  
  icell  
 The index of the
cell for which information is required. The first cell has index zero. An error will be
reported if the supplied value is greater than or equal to the value of the 
MocLength
attribute.  
 order  
 Returned holding the HEALPix order of the cell at the requested
index.  
  npix  
 Returned holding the " npix" value of the cell at the requested index.
    Copyright (C) 2021 East Asian Observatory
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 A Library for Handling
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Coordinate Systems
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