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/* mpz_out_str(stream, base, integer) -- Output to STREAM the multi prec.
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integer INTEGER in base BASE.
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Copyright 1991, 1993, 1994, 1996, 2001, 2005, 2011, 2012 Free Software
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Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any
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later version.
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or both in parallel, as here.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received copies of the GNU General Public License and the
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GNU Lesser General Public License along with the GNU MP Library. If not,
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see https://www.gnu.org/licenses/. */
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#include <stdio.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "longlong.h"
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size_t
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mpz_out_str (FILE *stream, int base, mpz_srcptr x)
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{
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mp_ptr xp;
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mp_size_t x_size = SIZ (x);
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unsigned char *str;
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size_t str_size;
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size_t i;
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size_t written;
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const char *num_to_text;
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TMP_DECL;
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if (stream == 0)
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stream = stdout;
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if (base >= 0)
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{
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num_to_text = "0123456789abcdefghijklmnopqrstuvwxyz";
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if (base <= 1)
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base = 10;
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else if (base > 36)
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{
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num_to_text = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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if (base > 62)
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return 0;
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}
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}
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else
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{
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base = -base;
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if (base <= 1)
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base = 10;
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else if (base > 36)
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return 0;
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num_to_text = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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}
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written = 0;
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if (x_size < 0)
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{
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fputc ('-', stream);
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x_size = -x_size;
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written = 1;
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}
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TMP_MARK;
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DIGITS_IN_BASE_PER_LIMB (str_size, x_size, base);
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str_size += 3;
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str = (unsigned char *) TMP_ALLOC (str_size);
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xp = PTR (x);
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if (! POW2_P (base))
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{
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xp = TMP_ALLOC_LIMBS (x_size | 1); /* |1 in case x_size==0 */
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MPN_COPY (xp, PTR (x), x_size);
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}
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str_size = mpn_get_str (str, base, xp, x_size);
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/* Convert result to printable chars. */
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for (i = 0; i < str_size; i++)
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str[i] = num_to_text[str[i]];
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str[str_size] = 0;
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{
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size_t fwret;
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fwret = fwrite ((char *) str, 1, str_size, stream);
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written += fwret;
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}
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TMP_FREE;
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return ferror (stream) ? 0 : written;
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}
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