123 lines
2.8 KiB
C
123 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 <string.h>
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#include <ctype.h>
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#include <math.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_vec.h"
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#include "fmpz_poly.h"
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int
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_fmpz_poly_set_str(fmpz * poly, const char *str)
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{
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char * w;
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slong i, len;
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if (!isdigit((unsigned char) str[0]))
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return -1;
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len = atol(str);
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if (len < 0)
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return -1;
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if (len == 0)
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return 0;
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while (*str++ != ' ')
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;
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/* Find maximal gap between spaces and allocate w */
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{
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const char * s = str;
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slong max;
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for (max = 0; *s != '\0';)
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{
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slong cur;
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for (s++, cur = 1; *s != ' ' && *s != '\0'; s++, cur++) ;
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if (max < cur)
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max = cur;
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}
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w = flint_malloc(max + 1);
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}
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for (i = 0; i < len; i++)
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{
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char * v;
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int ans;
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for (str++, v = w; *str != ' ' && *str != '\0';)
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*v++ = *str++;
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*v = '\0';
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ans = fmpz_set_str(poly++, w, 10);
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if (ans)
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{
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flint_free(w);
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return -1;
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}
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}
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flint_free(w);
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return 0;
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}
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int
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fmpz_poly_set_str(fmpz_poly_t poly, const char * str)
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{
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int ans;
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slong len;
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if (!isdigit((unsigned char) str[0]))
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return -1;
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len = atol(str);
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if (len < 0)
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return -1;
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if (len == 0)
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{
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fmpz_poly_zero(poly);
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return 0;
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}
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fmpz_poly_fit_length(poly, len);
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ans = _fmpz_poly_set_str(poly->coeffs, str);
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if (ans == 0)
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{
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_fmpz_poly_set_length(poly, len);
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_fmpz_poly_normalise(poly);
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}
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else
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{
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_fmpz_vec_zero(poly->coeffs, len);
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_fmpz_poly_set_length(poly, 0);
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}
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return ans;
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}
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