Five Million Digit Number

five_million.c

/* you need my library from */
/* https://github.com/MarekKnapek/mk_clib */
/* https://www.reddit.com/r/C_Programming/comments/17qgg6u/storing_extremely_large_numbers_in_c/ */


#define mk_lang_jumbo_want 1

#include "mk_lang_charbit.h"
#include "mk_lang_sizeof.h"

#define mk_lang_bui_t_name big_num_base
#define mk_lang_bui_t_base ullong
#include "mk_lang_bui_inl_fileh.h"
#include "mk_lang_bui_inl_filec.h"
#define big_num_base_sizebits_d (mk_lang_sizeof_bi_ullong_t * mk_lang_charbit)

#define mk_sl_cui_t_name big_num
#define mk_sl_cui_t_base big_num_base
#define mk_sl_cui_t_count 100 /* <== put 259526 here instead */
#include "mk_sl_cui_inl_fileh.h"
#include "mk_sl_cui_inl_filec.h"

#include <assert.h> /* asseert */
#include <stdio.h> /* printf */
#include <string.h> /* strlen */


static char const number_a[] = "4704745878477872019277152807317679077071572134447306057007334924369311383504931631284042512192565179";
static char const number_b[] = "2909285452011658393419656213491434159562586586557055269049652098580338507224264829397285847831630577";


int main(int argc, char** argv)
{
	big_num_t a; /* beware, you need large stack, consult your linker manual */
	big_num_t b;
	big_num_t c;
	char str[big_num_strlendec_v + 1];
	int n;

	n = big_num_from_str_dec_n(&a, number_a, (int)strlen(number_a)); assert(n == strlen(number_a));
	n = big_num_from_str_dec_n(&b, number_b, (int)strlen(number_b)); assert(n == strlen(number_b));
	big_num_add3_wrap_cid_cod(&a, &b, &c);
	n = big_num_to_str_dec_n(&c, str, big_num_strlendec_v); assert(n >= 1); str[n] = '\0';
	printf("%s\n", str);
}