mirror of https://github.com/Cisco-Talos/clamav
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
775 B
38 lines
775 B
/* 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 $ */
|
|
|