pb_clamp.c

多项式算法库,实现多项式算法,可以支持任意长度的多项式,主要用在密码学中,验证过,十分好用

/* LibTomPoly, Polynomial Basis Math -- Tom St Denis 
 * 
 * LibTomPoly is a public domain library that provides
 * polynomial basis arithmetic support.  It relies on
 * LibTomMath for large integer support.
 *
 * This library is free for all purposes without any
 * express guarantee that it works.
 *
 * Tom St Denis, [e-mail], http://poly.libtomcrypt.org
 */
#include <tompoly.h>

void pb_clamp(pb_poly *a)
{
   while (a->used > 0 && (mp_iszero(&(a->terms[a->used-1])) == MP_YES)) {
       --(a->used);
   }
}