#include "f2c.h"#include "fio.h"#ifdef KR_headersc_due(a) cilist *a;#elsec_due(cilist *a)#endif{if(f__init != 1) f_init();f__init = 3;if(a->ciunit>=MXUNIT || a->ciunit<0)err(a->cierr,101,"startio");f__sequential=f__formatted=f__recpos=0;f__external=1;f__curunit = &f__units[a->ciunit];if(a->ciunit>=MXUNIT || a->ciunit<0)err(a->cierr,101,"startio");f__elist=a;if(f__curunit->ufd==NULL && fk_open(DIR,UNF,a->ciunit) ) err(a->cierr,104,"due");f__cf=f__curunit->ufd;if(f__curunit->ufmt) err(a->cierr,102,"cdue");if(!f__curunit->useek) err(a->cierr,104,"cdue");if(f__curunit->ufd==NULL) err(a->cierr,114,"cdue");if(a->cirec <= 0)err(a->cierr,130,"due");fseek(f__cf,(long)(a->cirec-1)*f__curunit->url,SEEK_SET);f__curunit->uend = 0;return(0);}#ifdef KR_headersinteger s_rdue(a) cilist *a;#elseinteger s_rdue(cilist *a)#endif{int n;f__reading=1;if(n=c_due(a)) return(n);if(f__curunit->uwrt && f__nowreading(f__curunit))err(a->cierr,errno,"read start");return(0);}#ifdef KR_headersinteger s_wdue(a) cilist *a;#elseinteger s_wdue(cilist *a)#endif{int n;f__reading=0;if(n=c_due(a)) return(n);if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit))err(a->cierr,errno,"write start");return(0);}integer e_rdue(Void){f__init = 1;if(f__curunit->url==1 || f__recpos==f__curunit->url)return(0);fseek(f__cf,(long)(f__curunit->url-f__recpos),SEEK_CUR);if(ftell(f__cf)%f__curunit->url)err(f__elist->cierr,200,"syserr");return(0);}integer e_wdue(Void){f__init = 1;#ifdef ALWAYS_FLUSHif (fflush(f__cf))err(f__elist->cierr,errno,"write end");#endifreturn(e_rdue());}