/********************************************************************** * Copyright (c) Digital Equipment Corporation 1984, 1985, 1986. * * All Rights Reserved. * * Reference "/usr/src/COPYRIGHT" for applicable restrictions. * **********************************************************************/ /* * SCCSID: @(#)atol.c 3.0 4/22/86 */ long atol(p) register char *p; { long n; register int f; n = 0; f = 0; for(;;p++) { switch(*p) { case ' ': case '\t': continue; case '-': f++; case '+': p++; } break; } while(*p >= '0' && *p <= '9') n = n*10 + *p++ - '0'; return(f? -n: n); }