vasilito
facf0c92e0
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/* mpz_get_str (string, base, mp_src) -- Convert the multiple precision
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number MP_SRC to a string STRING of base BASE. If STRING is NULL
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allocate space for the result. In any case, return a pointer to the
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result. If STRING is not NULL, the caller must ensure enough space is
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available to store the result.
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Copyright 1991, 1993, 1994, 1996, 2000-2002, 2005, 2012, 2017 Free
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Software 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 <string.h> /* for strlen */
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#include "gmp-impl.h"
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#include "longlong.h"
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char *
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mpz_get_str (char *res_str, 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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char *return_str;
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size_t str_size;
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size_t alloc_size = 0;
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const char *num_to_text;
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int i;
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TMP_DECL;
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num_to_text = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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if (base > 1)
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{
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if (base <= 36)
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num_to_text = "0123456789abcdefghijklmnopqrstuvwxyz";
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else if (UNLIKELY (base > 62))
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return NULL;
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}
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else if (base > -2)
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{
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base = 10;
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}
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else
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{
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base = -base;
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if (UNLIKELY (base > 36))
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return NULL;
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}
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/* allocate string for the user if necessary */
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if (res_str == NULL)
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{
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/* digits, null terminator, possible minus sign */
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MPN_SIZEINBASE (alloc_size, PTR(x), ABS(x_size), base);
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alloc_size += 1 + (x_size<0);
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res_str = __GMP_ALLOCATE_FUNC_TYPE (alloc_size, char);
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}
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return_str = res_str;
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if (x_size < 0)
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{
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*res_str++ = '-';
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x_size = -x_size;
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}
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/* mpn_get_str clobbers its input on non power-of-2 bases */
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TMP_MARK;
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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 ((unsigned char *) res_str, base, xp, x_size);
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ASSERT (alloc_size == 0 || str_size <= alloc_size - (SIZ(x) < 0));
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/* Convert result to printable chars. */
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for (i = 0; i < str_size; i++)
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res_str[i] = num_to_text[(int) res_str[i]];
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res_str[str_size] = 0;
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TMP_FREE;
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/* if allocated then resize down to the actual space required */
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if (alloc_size != 0)
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{
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size_t actual_size = str_size + 1 + (res_str - return_str);
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ASSERT (actual_size == strlen (return_str) + 1);
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__GMP_REALLOCATE_FUNC_MAYBE_TYPE (return_str, alloc_size, actual_size,
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char);
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}
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return return_str;
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}
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