1 /* Copyright (c) 1979 Regents of the University of California */ 2 3 static char sccsid[] = "@(#)READ4.c 1.2 01/24/81"; 4 5 #include "h00vars.h" 6 #include "h01errs.h" 7 8 READ4(curfile) 9 10 register struct iorec *curfile; 11 { 12 int data, retval; 13 14 if (curfile->funit & FWRITE) { 15 ERROR(EREADIT, curfile->pfname); 16 return; 17 } 18 UNSYNC(curfile); 19 retval = fscanf(curfile->fbuf, "%ld", &data); 20 if (retval == EOF) { 21 ERROR(EPASTEOF, curfile->pfname); 22 return; 23 } 24 if (retval == 0) { 25 ERROR(EBADINUM, curfile->pfname); 26 return; 27 } 28 curfile->funit |= SYNC; 29 return data; 30 } 31