libclamav/tomsfastmath/bit/fp_lshd.c
33d76705
 /* TomsFastMath, a fast ISO C bignum library.
  * 
  * This project is meant to fill in where LibTomMath
  * falls short.  That is speed ;-)
  *
  * This project is public domain and free for all purposes.
  * 
  * Tom St Denis, tomstdenis@gmail.com
  */
 #include "bignum_fast.h"
 
 void fp_lshd(fp_int *a, int x)
 {
    int y;
 
    /* move up and truncate as required */
    y = MIN(a->used + x - 1, (int)(FP_SIZE-1));
 
    /* store new size */
    a->used = y + 1;
 
    /* move digits */
    for (; y >= x; y--) {
        a->dp[y] = a->dp[y-x];
    }
  
    /* zero lower digits */
    for (; y >= 0; y--) {
        a->dp[y] = 0;
    }
 
    /* clamp digits */
    fp_clamp(a);
 }
 
 /* $Source: /cvs/libtom/tomsfastmath/src/bit/fp_lshd.c,v $ */
 /* $Revision: 1.1 $ */
 /* $Date: 2006/12/31 21:25:53 $ */