1 /* inttostr.c -- convert integers to printable strings 2 3 Copyright (C) 2001, 2006, 2008, 2009, 2010 Free Software Foundation, Inc. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18 /* Written by Paul Eggert */ 19 20 #include <config.h> 21 22 #include "inttostr.h" 23 #include "verify.h" 24 25 /* Convert I to a printable string in BUF, which must be at least 26 INT_BUFSIZE_BOUND (INTTYPE) bytes long. Return the address of the 27 printable string, which need not start at BUF. */ 28 29 char * 30 inttostr (inttype i, char *buf) 31 { 32 verify (TYPE_SIGNED (inttype) == inttype_is_signed); 33 char *p = buf + INT_STRLEN_BOUND (inttype); 34 *p = 0; 35 36 #if inttype_is_signed 37 if (i < 0) 38 { 39 do 40 *--p = '0' - i % 10; 41 while ((i /= 10) != 0); 42 43 *--p = '-'; 44 } 45 else 46 #endif 47 { 48 do 49 *--p = '0' + i % 10; 50 while ((i /= 10) != 0); 51 } 52 53 return p; 54 } 55