27 Input/output library [input.output]

27.10 File systems [filesystems]

27.10.15 Filesystem operation functions [fs.op.funcs]

27.10.15.16 Is block file [fs.op.is_block_file]

bool is_block_file(file_status s) noexcept;

Returns: s.type() == file_type::block.

bool is_block_file(const path& p); bool is_block_file(const path& p, error_code& ec) noexcept;

Returns: is_block_file(status(p)) or is_block_file(status(p, ec)), respectively. The signature with argument ec returns false if an error occurs.

Throws: As specified in [fs.err.report].