[fs.op.relative] (original) (raw)

31 Input/output library [input.output]

31.12 File systems [filesystems]

31.12.13 Filesystem operation functions [fs.op.funcs]

31.12.13.30 Relative [fs.op.relative]

path filesystem::relative(const path& p, error_code& ec);

Returns: relative(p, current_path(), ec).

path filesystem::relative(const path& p, const path& base = current_path()); path filesystem::relative(const path& p, const path& base, error_code& ec);

Returns: For the first form:weakly_canonical(p).lexically_relative(weakly_canonical(base));

For the second form:weakly_canonical(p, ec).lexically_relative(weakly_canonical(base, ec)); or path() at the first error occurrence, if any.