97 lines
2.8 KiB
C
97 lines
2.8 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 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 <gmp.h>
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#include "flint.h"
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#include "fmpz.h"
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#include "fmpz_poly.h"
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#include "fmpq_poly.h"
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/*
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Recall the return value conventions for fputc (of type int)
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``If there are no errors, the same character that has been written is
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returned. If an error occurs, EOF is returned and the error indicator
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is set''
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where the EOF macro expands to a negative int, and flint_fprintf (of type int)
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``On success, the total number of characters written is returned.
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On failure, a negative number is returned.''
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*/
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int
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_fmpq_poly_fprint(FILE * file, const fmpz * poly, const fmpz_t den, slong len)
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{
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int r;
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slong i;
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fmpz_t n, d, g;
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fmpz_init(n);
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fmpz_init(d);
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fmpz_init(g);
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r = flint_fprintf(file, "%li", len);
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if ((len > 0) && (r > 0))
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{
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r = fputc(' ', file);
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for (i = 0; (i < len) && (r > 0); i++)
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{
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r = fputc(' ', file);
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if (r > 0)
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{
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fmpz_gcd(g, poly + i, den);
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fmpz_divexact(n, poly + i, g);
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fmpz_divexact(d, den, g);
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if (*d == WORD(1))
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r = fmpz_fprint(file, n);
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else
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{
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r = fmpz_fprint(file, n);
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if (r > 0)
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r = fputc('/', file);
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if (r > 0)
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r = fmpz_fprint(file, d);
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}
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}
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}
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}
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fmpz_clear(n);
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fmpz_clear(d);
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fmpz_clear(g);
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return r;
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}
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int fmpq_poly_fprint(FILE * file, const fmpq_poly_t poly)
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{
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return _fmpq_poly_fprint(file, poly->coeffs, poly->den, poly->length);
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}
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