20 lines
350 B
C
20 lines
350 B
C
#include "f2c.h"
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#include "fio.h"
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integer f_rew(a) alist *a;
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{
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unit *b;
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if(a->aunit>=MXUNIT || a->aunit<0)
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err(a->aerr,101,"rewind");
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b = &units[a->aunit];
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if(b->ufd == NULL || b->uwrt == 3)
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return(0);
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if(!b->useek)
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err(a->aerr,106,"rewind")
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if(b->uwrt) {
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(void) t_runc(a);
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b->uwrt = 3;
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}
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rewind(b->ufd);
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b->uend=0;
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return(0);
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}
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