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annotate libtommath/bn_mp_unsigned_bin_size.c @ 1323:83d85b28b353

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upgrade atomicio in order to remove K&R code in atomicio.c now, vwrite comes from atomicio.h
author Francois Perrad <francois.perrad@gadz.org>
date Fri, 25 Mar 2016 12:05:17 +0100
parents 5ff8218bcee9
children 60fc6476e044
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1 #include <tommath.h>
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2 #ifdef BN_MP_UNSIGNED_BIN_SIZE_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.com
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16 */
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18 /* get the size for an unsigned equivalent */
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19 int mp_unsigned_bin_size (mp_int * a)
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20 {
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21 int size = mp_count_bits (a);
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22 return (size / 8 + ((size & 7) != 0 ? 1 : 0));
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23 }
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24 #endif
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26 /* $Source: /cvs/libtom/libtommath/bn_mp_unsigned_bin_size.c,v $ */
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27 /* $Revision: 1.3 $ */
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28 /* $Date: 2006/03/31 14:18:44 $ */