kc3-lang/libtommath/mp_init_multi.c

• Show log

  Commit

• Hash : ca6924b7
  Author :
  Date : 2019-12-23T11:12:42
  

  add error code MP_OVF for integer overflow (too many digits)

Download

• mp_init_multi.c

• #include "tommath_private.h"
  #ifdef MP_INIT_MULTI_C
  /* LibTomMath, multiple-precision integer library -- Tom St Denis */
  /* SPDX-License-Identifier: Unlicense */
  
  #include <stdarg.h>
  
  mp_err mp_init_multi(mp_int *mp, ...)
  {
     mp_err err = MP_OKAY;
     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) {
        err = mp_init(cur_arg);
        if (err != MP_OKAY) {
           /* Oops - error! Back-track and mp_clear what we already
              succeeded in init-ing, then return error.
           */
           va_list clean_args;
  
           /* now start cleaning up */
           cur_arg = mp;
           va_start(clean_args, mp);
           while (n-- != 0) {
              mp_clear(cur_arg);
              cur_arg = va_arg(clean_args, mp_int *);
           }
           va_end(clean_args);
           break;
        }
        n++;
        cur_arg = va_arg(args, mp_int *);
     }
     va_end(args);
     return err;
  }
  
  #endif
  

Download