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

1.1       root        1: #include "f2c.h"
                      2: #include "fio.h"
                      3: #ifdef KR_headers
                      4: integer f_rew(a) alist *a;
                      5: #else
                      6: integer f_rew(alist *a)
                      7: #endif
                      8: {
                      9:        unit *b;
                     10:        if(a->aunit>=MXUNIT || a->aunit<0)
                     11:                err(a->aerr,101,"rewind");
                     12:        b = &f__units[a->aunit];
                     13:        if(b->ufd == NULL || b->uwrt == 3)
                     14:                return(0);
                     15:        if(!b->useek)
                     16:                err(a->aerr,106,"rewind")
                     17:        if(b->uwrt) {
                     18:                (void) t_runc(a);
                     19:                b->uwrt = 3;
                     20:                }
                     21:        rewind(b->ufd);
                     22:        b->uend=0;
                     23:        return(0);
                     24: }

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