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/* mini-gmp, a minimalistic implementation of a GNU GMP subset.

Copyright 2011-2015, 2017, 2019 Free Software Foundation, Inc.

This file is part of the GNU MP Library.

The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version.

The GNU MP Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
License for more details.

You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */

/* About mini-gmp: This is a minimal implementation of a subset of the
   GMP interface. It is intended for inclusion into applications which
   have modest bignums needs, as a fallback when the real GMP library
   is not installed.

   This file defines the public interface. */

#ifndef __MINI_GMP_H__
#define __MINI_GMP_H__

/* For size_t */
#include <stddef.h>

#if defined (__cplusplus)
extern "C" {
#endif

void mp_set_memory_functions (void *(*) (size_t),
			      void *(*) (void *, size_t, size_t),
			      void (*) (void *, size_t));

void mp_get_memory_functions (void *(**) (size_t),
			      void *(**) (void *, size_t, size_t),
			      void (**) (void *, size_t));

#ifndef MINI_GMP_LIMB_TYPE
#define MINI_GMP_LIMB_TYPE long
#endif

typedef unsigned MINI_GMP_LIMB_TYPE mp_limb_t;
typedef long mp_size_t;
typedef unsigned long mp_bitcnt_t;

typedef mp_limb_t *mp_ptr;
typedef const mp_limb_t *mp_srcptr;

typedef struct
{
  int _mp_alloc;		/* Number of *limbs* allocated and pointed
				   to by the _mp_d field.  */
  int _mp_size;			/* abs(_mp_size) is the number of limbs the
				   last field points to.  If _mp_size is
				   negative this is a negative number.  */
  mp_limb_t *_mp_d;		/* Pointer to the limbs.  */
} __mpz_struct;

typedef __mpz_struct mpz_t[1];

typedef __mpz_struct *mpz_ptr;
typedef const __mpz_struct *mpz_srcptr;

extern const int mp_bits_per_limb;

void mpn_copyi (mp_ptr, mp_srcptr, mp_size_t);
void mpn_copyd (mp_ptr, mp_srcptr, mp_size_t);
void mpn_zero (mp_ptr, mp_size_t);

int mpn_cmp (mp_srcptr, mp_srcptr, mp_size_t);
int mpn_zero_p (mp_srcptr, mp_size_t);

mp_limb_t mpn_add_1 (mp_ptr, mp_srcptr, mp_size_t, mp_limb_t);
mp_limb_t mpn_add_n (mp_ptr, mp_srcptr, mp_srcptr, mp_size_t);
mp_limb_t mpn_add (mp_ptr, mp_srcptr, mp_size_t, mp_srcptr, mp_size_t);

mp_limb_t mpn_sub_1 (mp_ptr, mp_srcptr, mp_size_t, mp_limb_t);
mp_limb_t mpn_sub_n (mp_ptr, mp_srcptr, mp_srcptr, mp_size_t);
mp_limb_t mpn_sub (mp_ptr, mp_srcptr, mp_size_t, mp_srcptr, mp_size_t);

mp_limb_t mpn_mul_1 (mp_ptr, mp_srcptr, mp_size_t, mp_limb_t);
mp_limb_t mpn_addmul_1 (mp_ptr, mp_srcptr, mp_size_t, mp_limb_t);
mp_limb_t mpn_submul_1 (mp_ptr, mp_srcptr, mp_size_t, mp_limb_t);

mp_limb_t mpn_mul (mp_ptr, mp_srcptr, mp_size_t, mp_srcptr, mp_size_t);
void mpn_mul_n (mp_ptr, mp_srcptr, mp_srcptr, mp_size_t);
void mpn_sqr (mp_ptr, mp_srcptr, mp_size_t);
int mpn_perfect_square_p (mp_srcptr, mp_size_t);
mp_size_t mpn_sqrtrem (mp_ptr, mp_ptr, mp_srcptr, mp_size_t);

mp_limb_t mpn_lshift (mp_ptr, mp_srcptr, mp_size_t, unsigned int);
mp_limb_t mpn_rshift (mp_ptr, mp_srcptr, mp_size_t, unsigned int);

mp_bitcnt_t mpn_scan0 (mp_srcptr, mp_bitcnt_t);
mp_bitcnt_t mpn_scan1 (mp_srcptr, mp_bitcnt_t);

void mpn_com (mp_ptr, mp_srcptr, mp_size_t);
mp_limb_t mpn_neg (mp_ptr, mp_srcptr, mp_size_t);

mp_bitcnt_t mpn_popcount (mp_srcptr, mp_size_t);

mp_limb_t mpn_invert_3by2 (mp_limb_t, mp_limb_t);
#define mpn_invert_limb(x) mpn_invert_3by2 ((x), 0)

size_t mpn_get_str (unsigned char *, int, mp_ptr, mp_size_t);
mp_size_t mpn_set_str (mp_ptr, const unsigned char *, size_t, int);

void mpz_init (mpz_t);
void mpz_init2 (mpz_t, mp_bitcnt_t);
void mpz_clear (mpz_t);

#define mpz_odd_p(z)   (((z)->_mp_size != 0) & (int) (z)->_mp_d[0])
#define mpz_even_p(z)  (! mpz_odd_p (z))

int mpz_sgn (const mpz_t);
int mpz_cmp_si (const mpz_t, long);
int mpz_cmp_ui (const mpz_t, unsigned long);
int mpz_cmp (const mpz_t, const mpz_t);
int mpz_cmpabs_ui (const mpz_t, unsigned long);
int mpz_cmpabs (const mpz_t, const mpz_t);
int mpz_cmp_d (const mpz_t, double);
int mpz_cmpabs_d (const mpz_t, double);

void mpz_abs (mpz_t, const mpz_t);
void mpz_neg (mpz_t, const mpz_t);
void mpz_swap (mpz_t, mpz_t);

void mpz_add_ui (mpz_t, const mpz_t, unsigned long);
void mpz_add (mpz_t, const mpz_t, const mpz_t);
void mpz_sub_ui (mpz_t, const mpz_t, unsigned long);
void mpz_ui_sub (mpz_t, unsigned long, const mpz_t);
void mpz_sub (mpz_t, const mpz_t, const mpz_t);

void mpz_mul_si (mpz_t, const mpz_t, long int);
void mpz_mul_ui (mpz_t, const mpz_t, unsigned long int);
void mpz_mul (mpz_t, const mpz_t, const mpz_t);
void mpz_mul_2exp (mpz_t, const mpz_t, mp_bitcnt_t);
void mpz_addmul_ui (mpz_t, const mpz_t, unsigned long int);
void mpz_addmul (mpz_t, const mpz_t, const mpz_t);
void mpz_submul_ui (mpz_t, const mpz_t, unsigned long int);
void mpz_submul (mpz_t, const mpz_t, const mpz_t);

void mpz_cdiv_qr (mpz_t, mpz_t, const mpz_t, const mpz_t);
void mpz_fdiv_qr (mpz_t, mpz_t, const mpz_t, const mpz_t);
void mpz_tdiv_qr (mpz_t, mpz_t, const mpz_t, const mpz_t);
void mpz_cdiv_q (mpz_t, const mpz_t, const mpz_t);
void mpz_fdiv_q (mpz_t, const mpz_t, const mpz_t);
void mpz_tdiv_q (mpz_t, const mpz_t, const mpz_t);
void mpz_cdiv_r (mpz_t, const mpz_t, const mpz_t);
void mpz_fdiv_r (mpz_t, const mpz_t, const mpz_t);
void mpz_tdiv_r (mpz_t, const mpz_t, const mpz_t);

void mpz_cdiv_q_2exp (mpz_t, const mpz_t, mp_bitcnt_t);
void mpz_fdiv_q_2exp (mpz_t, const mpz_t, mp_bitcnt_t);
void mpz_tdiv_q_2exp (mpz_t, const mpz_t, mp_bitcnt_t);
void mpz_cdiv_r_2exp (mpz_t, const mpz_t, mp_bitcnt_t);
void mpz_fdiv_r_2exp (mpz_t, const mpz_t, mp_bitcnt_t);
void mpz_tdiv_r_2exp (mpz_t, const mpz_t, mp_bitcnt_t);

void mpz_mod (mpz_t, const mpz_t, const mpz_t);

void mpz_divexact (mpz_t, const mpz_t, const mpz_t);

int mpz_divisible_p (const mpz_t, const mpz_t);
int mpz_congruent_p (const mpz_t, const mpz_t, const mpz_t);

unsigned long mpz_cdiv_qr_ui (mpz_t, mpz_t, const mpz_t, unsigned long);
unsigned long mpz_fdiv_qr_ui (mpz_t, mpz_t, const mpz_t, unsigned long);
unsigned long mpz_tdiv_qr_ui (mpz_t, mpz_t, const mpz_t, unsigned long);
unsigned long mpz_cdiv_q_ui (mpz_t, const mpz_t, unsigned long);
unsigned long mpz_fdiv_q_ui (mpz_t, const mpz_t, unsigned long);
unsigned long mpz_tdiv_q_ui (mpz_t, const mpz_t, unsigned long);
unsigned long mpz_cdiv_r_ui (mpz_t, const mpz_t, unsigned long);
unsigned long mpz_fdiv_r_ui (mpz_t, const mpz_t, unsigned long);
unsigned long mpz_tdiv_r_ui (mpz_t, const mpz_t, unsigned long);
unsigned long mpz_cdiv_ui (const mpz_t, unsigned long);
unsigned long mpz_fdiv_ui (const mpz_t, unsigned long);
unsigned long mpz_tdiv_ui (const mpz_t, unsigned long);

unsigned long mpz_mod_ui (mpz_t, const mpz_t, unsigned long);

void mpz_divexact_ui (mpz_t, const mpz_t, unsigned long);

int mpz_divisible_ui_p (const mpz_t, unsigned long);

unsigned long mpz_gcd_ui (mpz_t, const mpz_t, unsigned long);
void mpz_gcd (mpz_t, const mpz_t, const mpz_t);
void mpz_gcdext (mpz_t, mpz_t, mpz_t, const mpz_t, const mpz_t);
void mpz_lcm_ui (mpz_t, const mpz_t, unsigned long);
void mpz_lcm (mpz_t, const mpz_t, const mpz_t);
int mpz_invert (mpz_t, const mpz_t, const mpz_t);

void mpz_sqrtrem (mpz_t, mpz_t, const mpz_t);
void mpz_sqrt (mpz_t, const mpz_t);
int mpz_perfect_square_p (const mpz_t);

void mpz_pow_ui (mpz_t, const mpz_t, unsigned long);
void mpz_ui_pow_ui (mpz_t, unsigned long, unsigned long);
void mpz_powm (mpz_t, const mpz_t, const mpz_t, const mpz_t);
void mpz_powm_ui (mpz_t, const mpz_t, unsigned long, const mpz_t);

void mpz_rootrem (mpz_t, mpz_t, const mpz_t, unsigned long);
int mpz_root (mpz_t, const mpz_t, unsigned long);

void mpz_fac_ui (mpz_t, unsigned long);
void mpz_2fac_ui (mpz_t, unsigned long);
void mpz_mfac_uiui (mpz_t, unsigned long, unsigned long);
void mpz_bin_uiui (mpz_t, unsigned long, unsigned long);

int mpz_probab_prime_p (const mpz_t, int);

int mpz_tstbit (const mpz_t, mp_bitcnt_t);
void mpz_setbit (mpz_t, mp_bitcnt_t);
void mpz_clrbit (mpz_t, mp_bitcnt_t);
void mpz_combit (mpz_t, mp_bitcnt_t);

void mpz_com (mpz_t, const mpz_t);
void mpz_and (mpz_t, const mpz_t, const mpz_t);
void mpz_ior (mpz_t, const mpz_t, const mpz_t);
void mpz_xor (mpz_t, const mpz_t, const mpz_t);

mp_bitcnt_t mpz_popcount (const mpz_t);
mp_bitcnt_t mpz_hamdist (const mpz_t, const mpz_t);
mp_bitcnt_t mpz_scan0 (const mpz_t, mp_bitcnt_t);
mp_bitcnt_t mpz_scan1 (const mpz_t, mp_bitcnt_t);

int mpz_fits_slong_p (const mpz_t);
int mpz_fits_ulong_p (const mpz_t);
long int mpz_get_si (const mpz_t);
unsigned long int mpz_get_ui (const mpz_t);
double mpz_get_d (const mpz_t);
size_t mpz_size (const mpz_t);
mp_limb_t mpz_getlimbn (const mpz_t, mp_size_t);

void mpz_realloc2 (mpz_t, mp_bitcnt_t);