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annotate libtommath/bncore.c @ 284:eed26cff980b

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propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583) to branch 'au.asn.ucc.matt.dropbear' (head fff0894a0399405a9410ea1c6d118f342cf2aa64)
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 Mar 2006 13:23:49 +0000
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children 5ff8218bcee9
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284
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1 #include <tommath.h>
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2 #ifdef BNCORE_C
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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4 *
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5 * LibTomMath is a library that provides multiple-precision
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6 * integer arithmetic as well as number theoretic functionality.
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7 *
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8 * The library was designed directly after the MPI library by
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9 * Michael Fromberger but has been written from scratch with
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10 * additional optimizations in place.
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11 *
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12 * The library is free for all purposes without any express
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13 * guarantee it works.
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14 *
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15 * Tom St Denis, [email protected], http://math.libtomcrypt.org
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16 */
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17
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18 /* Known optimal configurations
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20 CPU /Compiler /MUL CUTOFF/SQR CUTOFF
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21 -------------------------------------------------------------
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22 Intel P4 Northwood /GCC v3.4.1 / 88/ 128/LTM 0.32 ;-)
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23 AMD Athlon64 /GCC v3.4.4 / 74/ 124/LTM 0.34
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25 */
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27 int KARATSUBA_MUL_CUTOFF = 74, /* Min. number of digits before Karatsuba multiplication is used. */
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28 KARATSUBA_SQR_CUTOFF = 124, /* Min. number of digits before Karatsuba squaring is used. */
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30 TOOM_MUL_CUTOFF = 350, /* no optimal values of these are known yet so set em high */
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31 TOOM_SQR_CUTOFF = 400;
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32 #endif