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comparison bn_mp_karatsuba_sqr.c @ 142:d29b64170cf0 libtommath-orig

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import of libtommath 0.32
author Matt Johnston <matt@ucc.asn.au>
date Sun, 19 Dec 2004 11:33:56 +0000
parents 86e0b50a9b58
children
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19:e1037a1e12e7 142:d29b64170cf0
1 #include <tommath.h>
2 #ifdef BN_MP_KARATSUBA_SQR_C
1 /* LibTomMath, multiple-precision integer library -- Tom St Denis 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
2 * 4 *
3 * LibTomMath is a library that provides multiple-precision 5 * LibTomMath is a library that provides multiple-precision
4 * integer arithmetic as well as number theoretic functionality. 6 * integer arithmetic as well as number theoretic functionality.
5 * 7 *
10 * The library is free for all purposes without any express 12 * The library is free for all purposes without any express
11 * guarantee it works. 13 * guarantee it works.
12 * 14 *
13 * Tom St Denis, [email protected], http://math.libtomcrypt.org 15 * Tom St Denis, [email protected], http://math.libtomcrypt.org
14 */ 16 */
15 #include <tommath.h>
16 17
17 /* Karatsuba squaring, computes b = a*a using three 18 /* Karatsuba squaring, computes b = a*a using three
18 * half size squarings 19 * half size squarings
19 * 20 *
20 * See comments of mp_karatsuba_mul for details. It 21 * See comments of karatsuba_mul for details. It
21 * is essentially the same algorithm but merely 22 * is essentially the same algorithm but merely
22 * tuned to perform recursive squarings. 23 * tuned to perform recursive squarings.
23 */ 24 */
24 int mp_karatsuba_sqr (mp_int * a, mp_int * b) 25 int mp_karatsuba_sqr (mp_int * a, mp_int * b)
25 { 26 {
111 X1:mp_clear (&x1); 112 X1:mp_clear (&x1);
112 X0:mp_clear (&x0); 113 X0:mp_clear (&x0);
113 ERR: 114 ERR:
114 return err; 115 return err;
115 } 116 }
117 #endif