diff options
Diffstat (limited to 'gnu/usr.bin/groff/libgroff/itoa.c')
-rw-r--r-- | gnu/usr.bin/groff/libgroff/itoa.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/gnu/usr.bin/groff/libgroff/itoa.c b/gnu/usr.bin/groff/libgroff/itoa.c new file mode 100644 index 0000000..e10d9dc --- /dev/null +++ b/gnu/usr.bin/groff/libgroff/itoa.c @@ -0,0 +1,43 @@ +/* Copyright (C) 1989, 1990, 1991, 1992 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#define INT_DIGITS 19 /* enough for 64 bit integer */ + +char *itoa(i) + 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; +} |