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Annotation of researchv10dc/libI77/due.c, revision 1.1.1.1

1.1       root        1: #include "f2c.h"
                      2: #include "fio.h"
                      3: 
                      4: #ifdef KR_headers
                      5: c_due(a) cilist *a;
                      6: #else
                      7: c_due(cilist *a)
                      8: #endif
                      9: {
                     10:        if(!f__init) f_init();
                     11:        if(a->ciunit>=MXUNIT || a->ciunit<0)
                     12:                err(a->cierr,101,"startio");
                     13:        f__sequential=f__formatted=f__recpos=0;
                     14:        f__external=1;
                     15:        f__curunit = &f__units[a->ciunit];
                     16:        f__elist=a;
                     17:        if(f__curunit->ufd==NULL && fk_open(DIR,UNF,a->ciunit) ) err(a->cierr,104,"due");
                     18:        f__cf=f__curunit->ufd;
                     19:        if(f__curunit->ufmt) err(a->cierr,102,"cdue")
                     20:        if(!f__curunit->useek) err(a->cierr,104,"cdue")
                     21:        if(f__curunit->ufd==NULL) err(a->cierr,114,"cdue")
                     22:        (void) fseek(f__cf,(long)(a->cirec-1)*f__curunit->url,SEEK_SET);
                     23:        f__curunit->uend = 0;
                     24:        return(0);
                     25: }
                     26: #ifdef KR_headers
                     27: integer s_rdue(a) cilist *a;
                     28: #else
                     29: integer s_rdue(cilist *a)
                     30: #endif
                     31: {
                     32:        int n;
                     33:        if(n=c_due(a)) return(n);
                     34:        f__reading=1;
                     35:        if(f__curunit->uwrt && f__nowreading(f__curunit))
                     36:                err(a->cierr,errno,"read start");
                     37:        return(0);
                     38: }
                     39: #ifdef KR_headers
                     40: integer s_wdue(a) cilist *a;
                     41: #else
                     42: integer s_wdue(cilist *a)
                     43: #endif
                     44: {
                     45:        int n;
                     46:        if(n=c_due(a)) return(n);
                     47:        f__reading=0;
                     48:        if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit))
                     49:                err(a->cierr,errno,"write start");
                     50:        return(0);
                     51: }
                     52: integer e_rdue(Void)
                     53: {
                     54:        if(f__curunit->url==1 || f__recpos==f__curunit->url)
                     55:                return(0);
                     56:        (void) fseek(f__cf,(long)(f__curunit->url-f__recpos),SEEK_CUR);
                     57:        if(ftell(f__cf)%f__curunit->url)
                     58:                err(f__elist->cierr,200,"syserr");
                     59:        return(0);
                     60: }
                     61: integer e_wdue(Void)
                     62: {
                     63:        return(e_rdue());
                     64: }

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