/contrib/groff/src/libs/libgroff/itoa.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 64 lines · 38 code · 5 blank · 21 comment · 8 complexity · b72cce3a11edafc7b3684762a5962e47 MD5 · raw file
- /* Copyright (C) 1989, 1990, 1991, 1992, 2000, 2002, 2004
- Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.com)
- This file is part of groff.
- groff is free software; you can redistribute it and/or modify it under
- the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 2, or (at your option) any later
- version.
- groff 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 General Public License
- for more details.
- You should have received a copy of the GNU General Public License along
- with groff; see the file COPYING. If not, write to the Free Software
- Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
- #define INT_DIGITS 19 /* enough for 64 bit integer */
- #define UINT_DIGITS 20
- #ifdef __cplusplus
- extern "C" {
- #endif
- char *i_to_a(int i)
- {
- /* Room for INT_DIGITS digits, - and '\0' */
- static char buf[INT_DIGITS + 2];
- char *p = buf + INT_DIGITS + 1; /* points to terminating '\0' */
- if (i >= 0) {
- do {
- *--p = '0' + (i % 10);
- i /= 10;
- } while (i != 0);
- return p;
- }
- else { /* i < 0 */
- do {
- *--p = '0' - (i % 10);
- i /= 10;
- } while (i != 0);
- *--p = '-';
- }
- return p;
- }
- char *ui_to_a(unsigned int i)
- {
- /* Room for UINT_DIGITS digits and '\0' */
- static char buf[UINT_DIGITS + 1];
- char *p = buf + UINT_DIGITS; /* points to terminating '\0' */
- do {
- *--p = '0' + (i % 10);
- i /= 10;
- } while (i != 0);
- return p;
- }
- #ifdef __cplusplus
- }
- #endif