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Description:
This function returns a flag indicating if the
KeyMap contains an entry
with the given key.
Invocation
RESULT = AST_MAPHASKEY( THIS, KEY, STATUS )
Arguments
THIS = INTEGER (Given)
Pointer to the KeyMap.
KEY = CHARACTER
∗ (
∗ )
(Given)
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.
STATUS = INTEGER (Given and Returned)
The global status.
Returned Value
AST_MAPHASKEY = LOGICAL
.TRUE. if the key was found, and .FALSE. otherwise.
Notes:
-
.TRUE. 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 AST_MAPDEFINED, which returns
zero in such a case.
-
A function value of .FALSE. will be returned if an error has already occurred, or if this function should
fail for any reason.
Copyright (C) 2021 East Asian Observatory
- ←Prev
- AST
A Library for Handling
World Coordinate
Systems
in Astronomy - Next→
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