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