in gemmology_fwd.h [277:280]
inline void Multiply(const uint8_t *A, const int8_t *B, size_t A_rows,
size_t width, size_t B_cols, Callback C, ExecutionEngine&& engine={}) {
return Engine<Arch>::Shift::Multiply(A, B, A_rows, width, B_cols, C, engine);
}