pub fn cast_base<FSub, P>(ext: P) -> PackedSubfield<P, FSub>where
FSub: BinaryField,
P: PackedField<Scalar: ExtensionField<FSub>> + UnderlierView,
PackedSubfield<P, FSub>: PackedField<Scalar = FSub>,Expand description
Reads a packed extension field element as a packed subfield element.