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SqMod/vendor/MDBC/libmariadb/ma_ll2str.c

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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
2016,2018 MariaDB Corporation AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02111-1301, USA */
#include <ma_global.h>
#include "ma_string.h"
#include <ctype.h>
static char NEAR _dig_vec[] =
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
char *ma_ll2str(long long val,char *dst,int radix)
{
char buffer[65];
register char *p;
long long_val;
if (radix < 0)
{
if (radix < -36 || radix > -2) return (char*) 0;
if (val < 0) {
*dst++ = '-';
val = 0ULL - val;
}
radix = -radix;
}
else
{
if (radix > 36 || radix < 2) return (char*) 0;
}
if (val == 0)
{
*dst++='0';
*dst='\0';
return dst;
}
p = &buffer[sizeof(buffer)-1];
*p = '\0';
while ((ulonglong) val > (ulonglong) LONG_MAX)
{
ulonglong quo=(ulonglong) val/(uint) radix;
uint rem= (uint) (val- quo* (uint) radix);
*--p = _dig_vec[rem];
val= quo;
}
long_val= (long) val;
while (long_val != 0)
{
long quo= long_val/radix;
*--p = _dig_vec[(uchar) (long_val - quo*radix)];
long_val= quo;
}
while ((*dst++ = *p++) != 0) ;
return dst-1;
}