view libtommath/bn_mp_dr_setup.c @ 1462:e017e46b1434

configure: add a variable to allow openpty check to be cached Signed-off-by: Dengke Du <[email protected]>
author Eric Bénard <eric@eukrea.com>
date Thu, 25 Apr 2013 00:27:25 +0200
parents 60fc6476e044
children 8bba51a55704
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#include <tommath_private.h>
#ifdef BN_MP_DR_SETUP_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis
 *
 * LibTomMath is a library that provides multiple-precision
 * integer arithmetic as well as number theoretic functionality.
 *
 * The library was designed directly after the MPI library by
 * Michael Fromberger but has been written from scratch with
 * additional optimizations in place.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 *
 * Tom St Denis, [email protected], http://libtom.org
 */

/* determines the setup value */
void mp_dr_setup(mp_int *a, mp_digit *d)
{
   /* the casts are required if DIGIT_BIT is one less than
    * the number of bits in a mp_digit [e.g. DIGIT_BIT==31]
    */
   *d = (mp_digit)((((mp_word)1) << ((mp_word)DIGIT_BIT)) - 
        ((mp_word)a->dp[0]));
}

#endif

/* $Source$ */
/* $Revision$ */
/* $Date$ */