Mercurial > dropbear
comparison libtommath/bn_mp_karatsuba_sqr.c @ 1439:8d24733026c5 coverity
merge
author | Matt Johnston <matt@ucc.asn.au> |
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date | Sat, 24 Jun 2017 23:33:16 +0800 |
parents | 60fc6476e044 |
children | 8bba51a55704 |
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1400:238a439670f5 | 1439:8d24733026c5 |
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1 #include <tommath.h> | 1 #include <tommath_private.h> |
2 #ifdef BN_MP_KARATSUBA_SQR_C | 2 #ifdef BN_MP_KARATSUBA_SQR_C |
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis | 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis |
4 * | 4 * |
5 * LibTomMath is a library that provides multiple-precision | 5 * LibTomMath is a library that provides multiple-precision |
6 * integer arithmetic as well as number theoretic functionality. | 6 * integer arithmetic as well as number theoretic functionality. |
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.com | 15 * Tom St Denis, [email protected], http://libtom.org |
16 */ | 16 */ |
17 | 17 |
18 /* Karatsuba squaring, computes b = a*a using three | 18 /* Karatsuba squaring, computes b = a*a using three |
19 * half size squarings | 19 * half size squarings |
20 * | 20 * |
50 goto T2; | 50 goto T2; |
51 if (mp_init_size (&x1x1, (a->used - B) * 2) != MP_OKAY) | 51 if (mp_init_size (&x1x1, (a->used - B) * 2) != MP_OKAY) |
52 goto X0X0; | 52 goto X0X0; |
53 | 53 |
54 { | 54 { |
55 register int x; | 55 int x; |
56 register mp_digit *dst, *src; | 56 mp_digit *dst, *src; |
57 | 57 |
58 src = a->dp; | 58 src = a->dp; |
59 | 59 |
60 /* now shift the digits */ | 60 /* now shift the digits */ |
61 dst = x0.dp; | 61 dst = x0.dp; |
114 ERR: | 114 ERR: |
115 return err; | 115 return err; |
116 } | 116 } |
117 #endif | 117 #endif |
118 | 118 |
119 /* $Source: /cvs/libtom/libtommath/bn_mp_karatsuba_sqr.c,v $ */ | 119 /* $Source$ */ |
120 /* $Revision: 1.5 $ */ | 120 /* $Revision$ */ |
121 /* $Date: 2006/03/31 14:18:44 $ */ | 121 /* $Date$ */ |