LCOV - code coverage report
Current view: top level - source4/heimdal/lib/hcrypto/libtommath - bn_mp_mod.c (source / functions) Hit Total Coverage
Test: coverage report for abartlet/fix-coverage dd10fb34 Lines: 8 12 66.7 %
Date: 2021-09-23 10:06:22 Functions: 1 1 100.0 %

          Line data    Source code
       1             : #include <tommath.h>
       2             : #ifdef BN_MP_MOD_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             : /* c = a mod b, 0 <= c < b */
      19             : int
      20        1992 : mp_mod (mp_int * a, mp_int * b, mp_int * c)
      21             : {
      22             :   mp_int  t;
      23             :   int     res;
      24             : 
      25        1992 :   if ((res = mp_init (&t)) != MP_OKAY) {
      26           0 :     return res;
      27             :   }
      28             : 
      29        1992 :   if ((res = mp_div (a, b, NULL, &t)) != MP_OKAY) {
      30           0 :     mp_clear (&t);
      31           0 :     return res;
      32             :   }
      33             : 
      34        1992 :   if (t.sign != b->sign) {
      35           0 :     res = mp_add (b, &t, c);
      36             :   } else {
      37        1992 :     res = MP_OKAY;
      38        1992 :     mp_exch (&t, c);
      39             :   }
      40             : 
      41        1992 :   mp_clear (&t);
      42        1992 :   return res;
      43             : }
      44             : #endif
      45             : 
      46             : /* $Source: /cvs/libtom/libtommath/bn_mp_mod.c,v $ */
      47             : /* $Revision: 1.4 $ */
      48             : /* $Date: 2006/12/28 01:25:13 $ */

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