pqc/external/flint-2.4.3/fmpz_poly_q/get_str.c
2014-05-24 23:16:06 +02:00

84 lines
2.3 KiB
C

/*=============================================================================
This file is part of FLINT.
FLINT 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.
FLINT 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 the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2010, 2011 Sebastian Pancratz
******************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "fmpz_poly_q.h"
/**
* \ingroup StringConversions
*
* Returns the string representation of the rational function \c op.
*/
char * fmpz_poly_q_get_str(const fmpz_poly_q_t op)
{
int i, j;
char * str;
char * numstr;
char * denstr;
if (fmpz_poly_is_one(op->den))
{
numstr = fmpz_poly_get_str(op->num);
i = strlen(numstr) - 1;
if (numstr[i] == ' ')
{
numstr[i] = '\0';
}
return numstr;
}
numstr = fmpz_poly_get_str(op->num);
denstr = fmpz_poly_get_str(op->den);
i = strlen(numstr) - 1;
if (numstr[i] == ' ')
numstr[i] = '\0';
i = strlen(denstr) - 1;
if (denstr[i] == ' ')
denstr[i] = '\0';
str = flint_malloc(strlen(numstr) + strlen(denstr) + 2);
if (str == NULL)
{
flint_printf("Exception (fmpz_poly_q_get_str). Memory allocation failed.\n");
abort();
}
for (i = 0; i < strlen(numstr); i++)
str[i] = numstr[i];
str[i++] = '/';
for (j = 0; j < strlen(denstr); j++)
str[i++] = denstr[j];
str[i] = '\0';
flint_free(numstr);
flint_free(denstr);
return str;
}