path absolute(const path& p); path absolute(const path& p, error_code& ec);
Effects: Composes an absolute path referencing the same file system location as p according to the operating system ([fs.conform.os]).
Returns: The composed path. The signature with argument ec returns path() if an error occurs.
[ Note: For the returned path, rp, rp.is_absolute() is true unless an error occurs. — end note ]
[ Note: To resolve symlinks, or perform other sanitization which might require queries to secondary storage, such as hard disks, consider canonical ([fs.op.canonical]). — end note ]
[ Note: Implementations are strongly encouraged to not query secondary storage, and not consider !exists(p) an error. — end note ]
[ Example: For POSIX-based operating systems, absolute(p) is simply current_path()/p. For Windows-based operating systems, absolute might have the same semantics as GetFullPathNameW. — end example ]
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