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Description:
This function returns a flag indicating if the
KeyMap
contains an entry with the given key.
Synopsis
int astMapHasKey( AstKeyMap
this, const
char key )
Parameters:
this
Pointer to the KeyMap.
key
The character string identifying
the KeyMap entry. Trailing spaces are ignored. The supplied string is converted to
upper case before use if the
KeyCase attribute is currently set to zero.
Returned
Value
astMapHasKey()
Non-zero if the key was found, and zero otherwise.
Notes:
-
A non-zero function value is returned if the key exists but has an undefined
value (that is, the returned value does not depend on whether the entry has a
defined value or not). See also astMapDefined, which returns zero in such a
case.
-
A function value of zero will be returned if an error has already occurred, or if this
function should fail for any reason.
Copyright (C) 2021 East Asian Observatory
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- AST
A Library for Handling
World
Coordinate Systems
in Astronomy - Next→
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