pb_clear.c

   1 /* LibTomPoly, Polynomial Basis Math -- Tom St Denis
   2  *
   3  * LibTomPoly is a public domain library that provides
   4  * polynomial basis arithmetic support.  It relies on
   5  * LibTomMath for large integer support.
   6  *
   7  * This library is free for all purposes without any
   8  * express guarantee that it works.
   9  *
  10  * Tom St Denis, tomstdenis@iahu.ca, http://poly.libtomcrypt.org
  11  */
  12 #include <tompoly.h>
  13 #include <stdlib.h>
  14
  15 void pb_clear(pb_poly *a)
  16 {
  17    int x;
  18
  19    if (a->terms != NULL) {
  20       /* free stuff */
  21       for (x = 0; x < a->alloc; x++) {
  22           mp_clear(&(a->terms[x]));
  23       }
  24       free(a->terms);
  25       mp_clear(&(a->characteristic));
  26
  27       /* prevent double frees */
  28       a->terms = NULL;
  29       a->alloc = a->used = 0;
  30    }
  31 }
  32
  33