1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 /* 24 * Glenn Fowler 25 * AT&T Research 26 */ 27 28 #include <ast.h> 29 #include <hashkey.h> 30 31 long 32 strkey(register const char* s) 33 { 34 register long x = 0; 35 register int n = 0; 36 register int c; 37 38 while (n++ < HASHKEYMAX) 39 { 40 c = *s; 41 if (c >= 'a' && c <= 'z') 42 x = HASHKEYPART(x, c); 43 else if (c >= '0' && c <= '9') 44 x = HASHKEYPART(x, HASHKEYN(c)); 45 else break; 46 s++; 47 } 48 return x; 49 } 50