astTestCell

Tests if a single HEALPix cell is included in a Moc

Description:

This function returns a non-zero value if the Moc includes the specified cell.

Synopsis

void astTestCell( AstMoc this, int order, int64_t npix, int parent )

Parameters:

this
Pointer to the Moc to be modified.
order
The HEALPix order of the cell to test. Zero is returned if this is higher than the maximum order allowed in the Moc (as given by its MaxOrder attribute).
npix
The " npix" value identifying the cell to test (see the MOC recommendation for more details).
parent
Indicates the value to return if the tested cell is not included at the specified order, but a parent cell (at a lower order) is included.

Returned Value

astTestCell()
One if the specified cell is included in the Moc at the specified order, of (if " parent" is non-zero) a parent cell is included in the Moc. Zero otherwise.