| /* LibTomMath, multiple-precision integer library -- Tom St Denis |
| * |
| * LibTomMath is a library that provides multiple-precision |
| * integer arithmetic as well as number theoretic functionality. |
| * |
| * The library was designed directly after the MPI library by |
| * 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. |
| * |
| * Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org |
| */ |
| #include <tommath.h> |
| |
| /* Known optimal configurations |
| |
| CPU /Compiler /MUL CUTOFF/SQR CUTOFF |
| ------------------------------------------------------------- |
| Intel P4 /GCC v3.2 / 70/ 108 |
| 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. */ |
| 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; |
