mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-27 19:15:43 +08:00
26 lines
490 B
C
26 lines
490 B
C
#include "config.h"
|
|
#include "f2c.h"
|
|
#include "fio.h"
|
|
integer
|
|
f_rew (alist * a)
|
|
{
|
|
unit *b;
|
|
if (f__init & 2)
|
|
f__fatal (131, "I/O recursion");
|
|
if (a->aunit >= MXUNIT || a->aunit < 0)
|
|
err (a->aerr, 101, "rewind");
|
|
b = &f__units[a->aunit];
|
|
if (b->ufd == NULL || b->uwrt == 3)
|
|
return (0);
|
|
if (!b->useek)
|
|
err (a->aerr, 106, "rewind");
|
|
if (b->uwrt)
|
|
{
|
|
(void) t_runc (a);
|
|
b->uwrt = 3;
|
|
}
|
|
FSEEK (b->ufd, 0, SEEK_SET);
|
|
b->uend = 0;
|
|
return (0);
|
|
}
|