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comparison libtommath/bncore.c @ 435:337c45621e81

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merge of 'a9b0496634cdd25647b65e585cc3240f3fa699ee' and 'c22be8b8f570b48e9662dac32c7b3e7148a42206'
author Matt Johnston <matt@ucc.asn.au>
date Thu, 22 Feb 2007 14:53:49 +0000
parents 5ff8218bcee9
children 60fc6476e044
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434:0aaaf68e97dc 435:337c45621e81
10 * additional optimizations in place. 10 * additional optimizations in place.
11 * 11 *
12 * The library is free for all purposes without any express 12 * The library is free for all purposes without any express
13 * guarantee it works. 13 * guarantee it works.
14 * 14 *
15 * Tom St Denis, [email protected], http://math.libtomcrypt.org 15 * Tom St Denis, [email protected], http://math.libtomcrypt.com
16 */ 16 */
17 17
18 /* Known optimal configurations 18 /* Known optimal configurations
19 19
20 CPU /Compiler /MUL CUTOFF/SQR CUTOFF 20 CPU /Compiler /MUL CUTOFF/SQR CUTOFF
21 ------------------------------------------------------------- 21 -------------------------------------------------------------
22 Intel P4 Northwood /GCC v3.4.1 / 88/ 128/LTM 0.32 ;-) 22 Intel P4 Northwood /GCC v3.4.1 / 88/ 128/LTM 0.32 ;-)
23 AMD Athlon64 /GCC v3.4.4 / 74/ 124/LTM 0.34 23 AMD Athlon64 /GCC v3.4.4 / 80/ 120/LTM 0.35
24 24
25 */ 25 */
26 26
27 int KARATSUBA_MUL_CUTOFF = 74, /* Min. number of digits before Karatsuba multiplication is used. */ 27 int KARATSUBA_MUL_CUTOFF = 80, /* Min. number of digits before Karatsuba multiplication is used. */
28 KARATSUBA_SQR_CUTOFF = 124, /* Min. number of digits before Karatsuba squaring is used. */ 28 KARATSUBA_SQR_CUTOFF = 120, /* Min. number of digits before Karatsuba squaring is used. */
29 29
30 TOOM_MUL_CUTOFF = 350, /* no optimal values of these are known yet so set em high */ 30 TOOM_MUL_CUTOFF = 350, /* no optimal values of these are known yet so set em high */
31 TOOM_SQR_CUTOFF = 400; 31 TOOM_SQR_CUTOFF = 400;
32 #endif 32 #endif
33
34 /* $Source: /cvs/libtom/libtommath/bncore.c,v $ */
35 /* $Revision: 1.4 $ */
36 /* $Date: 2006/03/31 14:18:44 $ */