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Last change
on this file was 2, checked in by bird, 22 years ago |
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Initial revision
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-
Property cvs2svn:cvs-rev
set to
1.1
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Property svn:eol-style
set to
native
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Property svn:executable
set to
*
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File size:
494 bytes
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| Line | |
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| 1 | #include "config.h"
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| 2 | #include "f2c.h"
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| 3 | #include "fio.h"
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| 4 | #ifdef KR_headers
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| 5 | integer f_rew(a) alist *a;
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| 6 | #else
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| 7 | integer f_rew(alist *a)
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| 8 | #endif
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| 9 | {
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| 10 | unit *b;
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| 11 | if (f__init & 2)
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| 12 | f__fatal (131, "I/O recursion");
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| 13 | if(a->aunit>=MXUNIT || a->aunit<0)
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| 14 | err(a->aerr,101,"rewind");
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| 15 | b = &f__units[a->aunit];
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| 16 | if(b->ufd == NULL || b->uwrt == 3)
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| 17 | return(0);
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| 18 | if(!b->useek)
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| 19 | err(a->aerr,106,"rewind");
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| 20 | if(b->uwrt) {
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| 21 | (void) t_runc(a);
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| 22 | b->uwrt = 3;
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| 23 | }
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| 24 | FSEEK(b->ufd, 0, SEEK_SET);
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| 25 | b->uend=0;
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| 26 | return(0);
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| 27 | }
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