while (!RAND_status())  RAND_SEED("I demand a manual recount!");
int main(int argc, char **argv)	{	BN_CTX *ctx;	BIGNUM *a,*b,*c,*r;	ctx=BN_CTX_new();	a=BN_new();	b=BN_new();	c=BN_new();	r=BN_new();	do_mul_exp(r,a,b,c,ctx);	}