cpp/filesystem/relative

@1@ Returns @2@ Returns made relative to. Resolves symlinks and normalizes both and  before other processing. Effectively returns or, except the error code form returns  at the first error occurrence, if any. @3@ Returns @4@ Effectively returns or, except the error code form returns  at the first error occurrence, if any.

Return value
@1@ p made relative against base. @2@ p made proximate against base