1 /* anytostr.c -- convert integers to printable strings 2 3 Copyright (C) 2001, 2006, 2008-2021 Free Software Foundation, Inc. 4 5 This file is free software: you can redistribute it and/or modify 6 it under the terms of the GNU Lesser General Public License as 7 published by the Free Software Foundation; either version 2.1 of the 8 License, or (at your option) any later version. 9 10 This file 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 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 /* Written by Paul Eggert */ 19 20 /* Tell gcc not to warn about the (i < 0) test, below. */ 21 #if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__ 22 # pragma GCC diagnostic ignored "-Wtype-limits" 23 #elif defined __clang__ 24 # pragma clang diagnostic ignored "-Wtautological-compare" 25 #endif 26 27 #include <config.h> 28 29 #include "inttostr.h" 30 31 /* Convert I to a printable string in BUF, which must be at least 32 INT_BUFSIZE_BOUND (INTTYPE) bytes long. Return the address of the 33 printable string, which need not start at BUF. */ 34 35 _GL_ATTRIBUTE_NODISCARD char * 36 anytostr (inttype i, char *buf) /* */ 37 { 38 char *p = buf + INT_STRLEN_BOUND (inttype); 39 *p = 0; 40 41 if (i < 0) 42 { 43 do 44 *--p = '0' - i % 10; 45 while ((i /= 10) != 0); 46 47 *--p = '-'; 48 } 49 else 50 { 51 do 52 *--p = '0' + i % 10; 53 while ((i /= 10) != 0); 54 } 55 56 return p; 57 }