Macro math 

macro_rules! math {
    (
        ($( $T:ty ),* )
        $doc:literal
        const fn $name:ident ($base:ident : $base_ty:ty) -> $returns:ty $implementation:block
    ) => { ... };
    (
        ($( $T:ty ),*)
        $doc:literal
        fn $name:ident ($base:ident : $base_ty:ty) -> $ret:ty $implementation:block
    ) => { ... };
    (
        ($( $T:ty ),*)
        $doc:literal
        fn $name:ident ($base:ident : $base_ty:ty, $operand:ident : $operand_ty:ty ) -> $ret:ty $implementation:block
    ) => { ... };
}