release/src/router/dropbear/libtommath/bncore.c

   1 #include <tommath.h>
   2 #ifdef BNCORE_C
   3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
   4  *
   5  * LibTomMath is a library that provides multiple-precision
   6  * integer arithmetic as well as number theoretic functionality.
   7  *
   8  * The library was designed directly after the MPI library by
   9  * Michael Fromberger but has been written from scratch with
  10  * additional optimizations in place.
  11  *
  12  * The library is free for all purposes without any express
  13  * guarantee it works.
  14  *
  15  * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
  16  */
  17
  18 /* Known optimal configurations
  19
  20  CPU                    /Compiler     /MUL CUTOFF/SQR CUTOFF
  21 -------------------------------------------------------------
  22  Intel P4 Northwood     /GCC v3.4.1   /        88/       128/LTM 0.32 ;-)
  23  AMD Athlon64           /GCC v3.4.4   /        80/       120/LTM 0.35
  24
  25 */
  26
  27 int     KARATSUBA_MUL_CUTOFF = 80,      /* Min. number of digits before Karatsuba multiplication is used. */
  28         KARATSUBA_SQR_CUTOFF = 120,     /* Min. number of digits before Karatsuba squaring is used. */
  29
  30         TOOM_MUL_CUTOFF      = 350,      /* no optimal values of these are known yet so set em high */
  31         TOOM_SQR_CUTOFF      = 400;
  32 #endif
  33
  34 /* $Source: /cvs/libtom/libtommath/bncore.c,v $ */
  35 /* $Revision: 1.4 $ */
  36 /* $Date: 2006/03/31 14:18:44 $ */