1 /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
2 2016,2018 MariaDB Corporation AB
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either
7 version 2 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public
15 License along with this library; if not, write to the Free
16 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
17 MA 02111-1301, USA */
18
19 #include <ma_global.h>
20 #include "ma_string.h"
21 #include <ctype.h>
22
23 static char NEAR _dig_vec[] =
24 "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
25
ma_ll2str(long long val,char * dst,int radix)26 char *ma_ll2str(long long val,char *dst,int radix)
27 {
28 char buffer[65];
29 register char *p;
30 long long_val;
31
32 if (radix < 0)
33 {
34 if (radix < -36 || radix > -2) return (char*) 0;
35 if (val < 0) {
36 *dst++ = '-';
37 val = 0ULL - val;
38 }
39 radix = -radix;
40 }
41 else
42 {
43 if (radix > 36 || radix < 2) return (char*) 0;
44 }
45 if (val == 0)
46 {
47 *dst++='0';
48 *dst='\0';
49 return dst;
50 }
51 p = &buffer[sizeof(buffer)-1];
52 *p = '\0';
53
54 while ((ulonglong) val > (ulonglong) LONG_MAX)
55 {
56 ulonglong quo=(ulonglong) val/(uint) radix;
57 uint rem= (uint) (val- quo* (uint) radix);
58 *--p = _dig_vec[rem];
59 val= quo;
60 }
61 long_val= (long) val;
62 while (long_val != 0)
63 {
64 long quo= long_val/radix;
65 *--p = _dig_vec[(uchar) (long_val - quo*radix)];
66 long_val= quo;
67 }
68 while ((*dst++ = *p++) != 0) ;
69 return dst-1;
70 }
71