2003-02-28 11:08:34 -05:00
|
|
|
/* LibTomMath, multiple-precision integer library -- Tom St Denis
|
|
|
|
|
*
|
2003-08-04 21:24:44 -04:00
|
|
|
* LibTomMath is a library that provides multiple-precision
|
2003-02-28 11:08:34 -05:00
|
|
|
* integer arithmetic as well as number theoretic functionality.
|
|
|
|
|
*
|
2003-08-04 21:24:44 -04:00
|
|
|
* The library was designed directly after the MPI library by
|
2003-02-28 11:08:34 -05:00
|
|
|
* Michael Fromberger but has been written from scratch with
|
|
|
|
|
* additional optimizations in place.
|
|
|
|
|
*
|
|
|
|
|
* The library is free for all purposes without any express
|
|
|
|
|
* guarantee it works.
|
|
|
|
|
*
|
2003-03-12 21:11:11 -05:00
|
|
|
* Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org
|
2003-02-28 11:08:34 -05:00
|
|
|
*/
|
|
|
|
|
#include <tommath.h>
|
|
|
|
|
|
2003-05-17 08:33:54 -04:00
|
|
|
/* Known optimal configurations
|
|
|
|
|
|
|
|
|
|
CPU /Compiler /MUL CUTOFF/SQR CUTOFF
|
|
|
|
|
-------------------------------------------------------------
|
2003-05-29 09:35:26 -04:00
|
|
|
Intel P4 /GCC v3.2 / 70/ 108
|
2003-05-17 08:33:54 -04:00
|
|
|
AMD Athlon XP /GCC v3.2 / 109/ 127
|
|
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* configured for a AMD XP Thoroughbred core with etc/tune.c */
|
|
|
|
|
int KARATSUBA_MUL_CUTOFF = 109, /* Min. number of digits before Karatsuba multiplication is used. */
|
2003-05-29 09:35:26 -04:00
|
|
|
KARATSUBA_SQR_CUTOFF = 127, /* Min. number of digits before Karatsuba squaring is used. */
|
|
|
|
|
|
|
|
|
|
TOOM_MUL_CUTOFF = 350, /* no optimal values of these are known yet so set em high */
|
|
|
|
|
TOOM_SQR_CUTOFF = 400;
|
