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- /* This is file ITOA.C */
- /*
- ** Copyright (C) 1994 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
- **
- ** This file is distributed under the terms listed in the document
- ** "copying.dj", available from DJ Delorie at the address above.
- ** A copy of "copying.dj" should accompany this file; if not, a copy
- ** should be available from where this file was obtained. This file
- ** may not be distributed without a verbatim copy of "copying.dj".
- **
- ** This file is distributed WITHOUT ANY WARRANTY; without even the implied
- ** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #include <stdlib.h>
-
- char *itoa(int value, char *string, int radix)
- {
- char tmp[33];
- char *tp = tmp;
- int i;
- unsigned v;
- int sign;
- char *sp;
-
- if (string == 0)
- string = (char *)malloc(33);
- sp = string;
-
- sign = (radix == 10 && value < 0);
- if (sign)
- v = -value;
- else
- v = (unsigned)value;
- while (v || tp == tmp)
- {
- i = v % radix;
- v = v / radix;
- if (i < 10)
- *tp++ = i+'0';
- else
- *tp++ = i + 'a' - 10;
- }
- if (sign)
- *sp++ = '-';
- while (tp > tmp)
- *sp++ = *--tp;
- *sp = 0;
- return string;
- }
-