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comparison bncore.c @ 2:86e0b50a9b58 libtommath-orig ltm-0.30-orig

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ltm 0.30 orig import
author Matt Johnston <matt@ucc.asn.au>
date Mon, 31 May 2004 18:25:22 +0000
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-1:000000000000 2:86e0b50a9b58
1 /* LibTomMath, multiple-precision integer library -- Tom St Denis
2 *
3 * LibTomMath is a library that provides multiple-precision
4 * integer arithmetic as well as number theoretic functionality.
5 *
6 * The library was designed directly after the MPI library by
7 * Michael Fromberger but has been written from scratch with
8 * additional optimizations in place.
9 *
10 * The library is free for all purposes without any express
11 * guarantee it works.
12 *
13 * Tom St Denis, [email protected], http://math.libtomcrypt.org
14 */
15 #include <tommath.h>
16
17 /* Known optimal configurations
18
19 CPU /Compiler /MUL CUTOFF/SQR CUTOFF
20 -------------------------------------------------------------
21 Intel P4 /GCC v3.2 / 70/ 108
22 AMD Athlon XP /GCC v3.2 / 109/ 127
23
24 */
25
26 /* configured for a AMD XP Thoroughbred core with etc/tune.c */
27 int KARATSUBA_MUL_CUTOFF = 109, /* Min. number of digits before Karatsuba multiplication is used. */
28 KARATSUBA_SQR_CUTOFF = 127, /* 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;