3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality.
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.
12 * The library is free for all purposes without any express
15 * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
18 /* get the lower 32-bits of an mp_int */
19 unsigned long mp_get_int(mp_int * a)
28 /* get number of digits of the lsb we have to read */
29 i = MIN(a->used,(int)((sizeof(unsigned long)*CHAR_BIT+DIGIT_BIT-1)/DIGIT_BIT))-1;
31 /* get most significant digit of result */
35 res = (res << DIGIT_BIT) | DIGIT(a,i);
38 /* force result to 32-bits always so it is consistent on non 32-bit platforms */
39 return res & 0xFFFFFFFFUL;
43 /* $Source: /cvs/libtom/libtommath/bn_mp_get_int.c,v $ */
44 /* $Revision: 1.3 $ */
45 /* $Date: 2006/03/31 14:18:44 $ */