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#include <tommath.h>
#ifdef BN_MP_EXCH_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis
*
* LibTomMath is a library that provides multiple-precision
* integer arithmetic as well as number theoretic functionality.
*
* The library was designed directly after the MPI library by
* Michael Fromberger but has been written from scratch with
* additional optimizations in place.
*
* The library is free for all purposes without any express
* guarantee it works.
*
* Tom St Denis, tomstdenis@gmail.com, http://libtom.org
*/
/* swap the elements of two integers, for cases where you can't simply swap the
* mp_int pointers around
*/
void
mp_exch MPA(mp_int * a, mp_int * b)
{
mp_int t;
if(MANAGED(a) || MANAGED(b)) {
mp_init(&t);
// copy a to t
mp_copy(MPST, a, &t);
// copy b to a
mp_copy(MPST, b, a);
// copy t to b
mp_copy(MPST, &t, b);
mp_clear(&t);
return;
}
t = *a;
*a = *b;
*b = t;
}
#endif
/* $Source: /cvs/libtom/libtommath/bn_mp_exch.c,v $ */
/* $Revision: 1.4 $ */
/* $Date: 2006/12/28 01:25:13 $ */
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