to_words52
to_words52(base1_red, regs_capacity, base1, factor_size);
to_words52(base2_red, regs_capacity, base2, factor_size);
to_words52(m1_red, regs_capacity, m1, factor_size);
to_words52(m2_red, regs_capacity, m2, factor_size);
to_words52(rr1_red, regs_capacity, rr1, factor_size);
to_words52(rr2_red, regs_capacity, rr2, factor_size);
static void to_words52(BN_ULONG *out, int out_len, const BN_ULONG *in,