view tomsfastmath/src/sqr/fp_sqr_comba_3.c @ 644:ff5cc422ba40 dropbear-tfm tomsfastmath

Somehow Makefile.in went missing
author Matt Johnston <matt@ucc.asn.au>
date Wed, 23 Nov 2011 18:11:51 +0700
parents a362b62d38b2
children
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#define TFM_DEFINES
#include "fp_sqr_comba.c"

#ifdef TFM_SQR3
void fp_sqr_comba3(fp_int *A, fp_int *B)
{
   fp_digit *a, b[6], c0, c1, c2, sc0, sc1, sc2;
#ifdef TFM_ISO
   fp_word tt;
#endif

   a = A->dp;
   COMBA_START; 

   /* clear carries */
   CLEAR_CARRY;

   /* output 0 */
   SQRADD(a[0],a[0]);
   COMBA_STORE(b[0]);

   /* output 1 */
   CARRY_FORWARD;
   SQRADD2(a[0], a[1]); 
   COMBA_STORE(b[1]);

   /* output 2 */
   CARRY_FORWARD;
   SQRADD2(a[0], a[2]); SQRADD(a[1], a[1]); 
   COMBA_STORE(b[2]);

   /* output 3 */
   CARRY_FORWARD;
   SQRADD2(a[1], a[2]); 
   COMBA_STORE(b[3]);

   /* output 4 */
   CARRY_FORWARD;
   SQRADD(a[2], a[2]); 
   COMBA_STORE(b[4]);
   COMBA_STORE2(b[5]);
   COMBA_FINI;

   B->used = 6;
   B->sign = FP_ZPOS;
   memcpy(B->dp, b, 6 * sizeof(fp_digit));
   memset(B->dp + 6, 0, (FP_SIZE - 6) * sizeof(fp_digit));
   fp_clamp(B);
}
#endif