1 files changed, 25 insertions, 0 deletions
diff --git a/contrib/libf2c/libI77/rewind.c b/contrib/libf2c/libI77/rewind.c
new file mode 100644
index 0000000..d7a9b76
--- /dev/null
+++ b/contrib/libf2c/libI77/rewind.c
@@ -0,0 +1,25 @@
+#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);
+}