/usr/include/ratpoints.h is in libratpoints-dev 1:2.1.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* ratpoints-2.1.3 *
* - A program to find rational points on hyperelliptic curves *
* Copyright (C) 2008, 2009 Michael Stoll *
* *
* This program is free software: you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation, either version 2 of *
* the License, or (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of version 2 of the GNU General *
* Public License along with this program. *
* If not, see <http://www.gnu.org/licenses/>. *
***********************************************************************/
/***********************************************************************
* ratpoints.h *
* *
* Header file for the ratpoints program and library *
* *
* Michael Stoll, September 21, 2009 *
***********************************************************************/
#include <gmp.h>
#define RATPOINTS_MAX_DEGREE 100 /* max. degree of f(x) */
#define RATPOINTS_ARRAY_SIZE 256 /* Array size in longs */
#define RATPOINTS_DEFAULT_SP1 9 /* Default value for sp1 */
#define RATPOINTS_DEFAULT_SP2 16 /* Default value for sp2 */
#define RATPOINTS_DEFAULT_NUM_PRIMES 28 /* Default value for num_primes */
#define RATPOINTS_DEFAULT_STURM 10 /* Default value for sturm_iter */
#define RATPOINTS_DEFAULT_MAX_FORBIDDEN 30 /* Default value for max_forbidden */
typedef struct {double low; double up;} ratpoints_interval;
typedef struct { mpz_t *cof; long degree; long height;
ratpoints_interval *domain; long num_inter;
long b_low; long b_high; long sp1; long sp2;
long array_size;
long sturm; long num_primes; long max_forbidden;
unsigned int flags;
/* from here: private data */
mpz_t *work; long work_length;
void *se_buffer; void *se_next;
void *ba_buffer; void *ba_next;
int *int_buffer; int *int_next;
void *sieve_list;
void *den_info; void *divisors;
void *forb_ba; void *forbidden;
}
ratpoints_args;
/* Define the flag bits for the flags component: */
#define RATPOINTS_NO_CHECK (unsigned int)0x0001
#define RATPOINTS_NO_Y (unsigned int)0x0002
#define RATPOINTS_NO_REVERSE (unsigned int)0x0004
#define RATPOINTS_NO_JACOBI (unsigned int)0x0008
#define RATPOINTS_VERBOSE (unsigned int)0x0010
#define RATPOINTS_FLAGS_INPUT_MASK \
(RATPOINTS_NO_CHECK | RATPOINTS_NO_Y | RATPOINTS_NO_REVERSE | \
RATPOINTS_NO_JACOBI | RATPOINTS_VERBOSE)
/* Flags bits for internal purposes */
#define RATPOINTS_REVERSED (unsigned int)0x0100
#define RATPOINTS_CHECK_DENOM (unsigned int)0x0200
#define RATPOINTS_USE_SQUARES (unsigned int)0x0400
#define RATPOINTS_USE_SQUARES1 (unsigned int)0x0800
#define RATPOINTS_COMPUTE_BC (unsigned int)0x2000
/* Return values of find_points() */
#define RATPOINTS_NON_SQUAREFREE (-1)
#define RATPOINTS_BAD_ARGS (-2)
#define RATPOINTS_WORK_LENGTH_TOO_SMALL (-3)
long find_points(ratpoints_args*,
int proc(long, long, const mpz_t, void*, int*), void*);
void find_points_init(ratpoints_args*);
long find_points_work(ratpoints_args*,
int proc(long, long, const mpz_t, void*, int*), void*);
void find_points_clear(ratpoints_args*);
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