1*22080Smckusick #ifndef lint 2*22080Smckusick static char sccsid[] = "@(#)atoi.c 5.1 (Berkeley) 06/05/85"; 3*22080Smckusick #endif not lint 4*22080Smckusick 52816Swnj atoi(p) 62816Swnj register char *p; 71954Swnj { 82816Swnj register int n; 92816Swnj register int f; 101954Swnj 111954Swnj n = 0; 121954Swnj f = 0; 132816Swnj for(;;p++) { 142816Swnj switch(*p) { 152816Swnj case ' ': 162816Swnj case '\t': 172816Swnj continue; 182816Swnj case '-': 192816Swnj f++; 202816Swnj case '+': 212816Swnj p++; 222816Swnj } 232816Swnj break; 241954Swnj } 251954Swnj while(*p >= '0' && *p <= '9') 261954Swnj n = n*10 + *p++ - '0'; 272816Swnj return(f? -n: n); 281954Swnj } 29