LCOV - code coverage report
Current view: top level - source4/heimdal/lib/hcrypto/libtommath - bn_mp_clamp.c (source / functions) Hit Total Coverage
Test: coverage report for abartlet/fix-coverage dd10fb34 Lines: 6 6 100.0 %
Date: 2021-09-23 10:06:22 Functions: 1 1 100.0 %

          Line data    Source code
       1             : #include <tommath.h>
       2             : #ifdef BN_MP_CLAMP_C
       3             : /* LibTomMath, multiple-precision integer library -- Tom St Denis
       4             :  *
       5             :  * LibTomMath is a library that provides multiple-precision
       6             :  * integer arithmetic as well as number theoretic functionality.
       7             :  *
       8             :  * The library was designed directly after the MPI library by
       9             :  * Michael Fromberger but has been written from scratch with
      10             :  * additional optimizations in place.
      11             :  *
      12             :  * The library is free for all purposes without any express
      13             :  * guarantee it works.
      14             :  *
      15             :  * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
      16             :  */
      17             : 
      18             : /* trim unused digits
      19             :  *
      20             :  * This is used to ensure that leading zero digits are
      21             :  * trimed and the leading "used" digit will be non-zero
      22             :  * Typically very fast.  Also fixes the sign if there
      23             :  * are no more leading digits
      24             :  */
      25             : void
      26     5193745 : mp_clamp (mp_int * a)
      27             : {
      28             :   /* decrease used while the most significant digit is
      29             :    * zero.
      30             :    */
      31    12962434 :   while (a->used > 0 && a->dp[a->used - 1] == 0) {
      32     2574944 :     --(a->used);
      33             :   }
      34             : 
      35             :   /* reset the sign flag if used == 0 */
      36     5193745 :   if (a->used == 0) {
      37        3596 :     a->sign = MP_ZPOS;
      38             :   }
      39     5193745 : }
      40             : #endif
      41             : 
      42             : /* $Source: /cvs/libtom/libtommath/bn_mp_clamp.c,v $ */
      43             : /* $Revision: 1.4 $ */
      44             : /* $Date: 2006/12/28 01:25:13 $ */

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