The which command prints the full qualification of a specified name. It is valid only in native mode.
Print full qualification of name.
Print full qualification of type.
where:
name is the name of loadable object that is in scope, for example, a variable, function, class template, or function template.
type is the name of a type.
–n displays the full qualification of a non-type. It is not necessary to specify –n; this is the default if you type the which command with no options.
–t displays the full qualification of a type.
–m forces macro lookup even if the dbxenv variable macro_expand is set to off.
+m defeats macro lookup so that any symbols that might have been shadowed by macros are found instead.