/*********************************************************************** * * * This software is part of the ast package * * Copyright (c) 1985-2011 AT&T Intellectual Property * * and is licensed under the * * Common Public License, Version 1.0 * * by AT&T Intellectual Property * * * * A copy of the License is available at * * http://www.opensource.org/licenses/cpl1.0.txt * * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * * * * Information and Software Systems Research * * AT&T Research * * Florham Park NJ * * * * Glenn Fowler <gsf@research.att.com> * * David Korn <dgk@research.att.com> * * Phong Vo <kpv@research.att.com> * * * ***********************************************************************/ #pragma prototyped /* * Glenn Fowler * AT&T Bell Laboratories * * convert a 0 terminated character constant string to an int */ #include <ast.h> int chrtoi(register const char* s) { register int c; register int n; register int x; char* p; c = 0; for (n = 0; n < sizeof(int) * CHAR_BIT; n += CHAR_BIT) { switch (x = *((unsigned char*)s++)) { case '\\': x = chresc(s - 1, &p); s = (const char*)p; break; case 0: return(c); } c = (c << CHAR_BIT) | x; } return(c); }