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/* 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@iahu.ca, http://math.libtomcrypt.org
*/
#include <tommath.h>
#include <stdarg.h>

int mp_init_multi(mp_int *mp, ...)
{
    mp_err res = MP_OKAY; /* Assume ok until proven otherwise */
    int n = 0; /* Number of ok inits */
    mp_int* cur_arg = mp;
    va_list args;

    va_start(args, mp); /* init args to next argument from caller */
    while (cur_arg != NULL) {
        if (mp_init(cur_arg) != MP_OKAY) {
            /* Oops - error! Back-track and mp_clear what we already
succeeded in init-ing, then return error.
*/
            va_list clean_args;
            
            /* end the current list */
            va_end(args);
            
            /* now start cleaning up */
            cur_arg = mp;
            va_start(clean_args, mp);
            while (n--) {
                mp_clear(cur_arg);
                cur_arg = va_arg(clean_args, mp_int*);
            }
            va_end(clean_args);
            res = MP_MEM;
            break;
        }
        n++;
        cur_arg = va_arg(args, mp_int*);
    }
    va_end(args);
    return res; /* Assumed ok, if error flagged above. */
}
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