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view libtommath/bn_mp_clamp.c @ 1090:93e1a0eb40ef

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Uses abort() instead of raising a SIGABRT signal [-Werror] error: ‘noreturn’ function does return [-Werror] abort() is a noreturn function while raise() is not. And because crypt_argchk() is flagged as __attribute__(noreturn), abort() appears to be a better condidate. This compilation warning has probably been introduced by commit 1809f741cba865b03d4db5c4ba8c41364a55d6bc.
author Gaël PORTAY <gael.portay@gmail.com>
date Sat, 02 May 2015 11:26:22 +0200
parents 5ff8218bcee9
children 60fc6476e044
line wrap: on
line source

#include <tommath.h>
#ifdef BN_MP_CLAMP_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://math.libtomcrypt.com
 */

/* trim unused digits 
 *
 * This is used to ensure that leading zero digits are
 * trimed and the leading "used" digit will be non-zero
 * Typically very fast.  Also fixes the sign if there
 * are no more leading digits
 */
void
mp_clamp (mp_int * a)
{
  /* decrease used while the most significant digit is
   * zero.
   */
  while (a->used > 0 && a->dp[a->used - 1] == 0) {
    --(a->used);
  }

  /* reset the sign flag if used == 0 */
  if (a->used == 0) {
    a->sign = MP_ZPOS;
  }
}
#endif

/* $Source: /cvs/libtom/libtommath/bn_mp_clamp.c,v $ */
/* $Revision: 1.3 $ */
/* $Date: 2006/03/31 14:18:44 $ */