Module scalar 

Minimal scalar representation and primitives used by the fast backend.

This module deliberately contains only the operations required by the fixed-64 reducer and recoder. Keeping them here makes the hardware backend a self-contained crate without pulling in the older serial scalar engine.

Structs

ScalarWords

A scalar represented as four little-endian 64-bit words.

Functions

scalar_ge_kernel

Compare two four-word unsigned values.

scalar_l_kernel

Return the Ed25519 group order l in synthesizable code.

scalar_shift_in_kernel

Shift a four-word value left and insert one least-significant bit.

scalar_sub_kernel

Subtract two four-word values with propagated borrow.

scalar_zero_kernel

Return scalar zero in synthesizable code.