95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2010, 2011 Sebastian Pancratz
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******************************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "fmpz_poly_q.h"
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/**
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* \ingroup StringConversions
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*
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* Returns the pretty string representation of \c op.
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*
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* Returns the pretty string representation of the rational function \c op,
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* using the string \c x as the variable name.
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*/
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char * fmpz_poly_q_get_str_pretty(const fmpz_poly_q_t op, const char *x)
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{
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int i, j;
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char * str;
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char * numstr;
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char * denstr;
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if (fmpz_poly_is_one(op->den))
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{
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return fmpz_poly_get_str_pretty(op->num, x);
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}
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numstr = fmpz_poly_get_str_pretty(op->num, x);
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denstr = fmpz_poly_get_str_pretty(op->den, x);
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str = flint_malloc(strlen(numstr) + strlen(denstr) + 6);
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if (!str)
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{
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flint_printf("Exception (fmpz_poly_q_get_str_pretty). Memory allocation failed.\n");
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abort();
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}
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i = 0;
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if (fmpz_poly_degree(op->num) > 0)
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{
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str[i++] = '(';
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for (j = 0; j < strlen(numstr); j++)
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str[i++] = numstr[j];
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str[i++] = ')';
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}
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else
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{
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for (j = 0; j < strlen(numstr); j++)
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str[i++] = numstr[j];
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}
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str[i++] = '/';
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if (fmpz_poly_degree(op->den) > 0)
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{
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str[i++] = '(';
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for (j = 0; j < strlen(denstr); j++)
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str[i++] = denstr[j];
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str[i++] = ')';
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}
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else
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{
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for (j = 0; j < strlen(denstr); j++)
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str[i++] = denstr[j];
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}
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str[i] = '\0';
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flint_free(numstr);
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flint_free(denstr);
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return str;
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}
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