libf2c/libI77/uio.c

   1 #include "config.h"
   2 #include "f2c.h"
   3 #include "fio.h"
   4 #include <sys/types.h>
   5 uiolen f__reclen;
   6
   7 int
   8 do_us (ftnint * number, char *ptr, ftnlen len)
   9 {
  10   if (f__reading)
  11     {
  12       f__recpos += (int) (*number * len);
  13       if (f__recpos > f__reclen)
  14         err (f__elist->cierr, 110, "do_us");
  15       if (fread (ptr, (size_t) len, (size_t) (*number), f__cf) != (size_t) *number)
  16         err (f__elist->ciend, EOF, "do_us");
  17       return (0);
  18     }
  19   else
  20     {
  21       f__reclen += *number * len;
  22       (void) fwrite (ptr, (size_t) len, (size_t) (*number), f__cf);
  23       return (0);
  24     }
  25 }
  26 integer
  27 do_ud (ftnint * number, char *ptr, ftnlen len)
  28 {
  29   f__recpos += (int) (*number * len);
  30   if (f__recpos > f__curunit->url && f__curunit->url != 1)
  31     err (f__elist->cierr, 110, "do_ud");
  32   if (f__reading)
  33     {
  34 #ifdef Pad_UDread
  35       size_t i;
  36       if (!(i = fread (ptr, (size_t) len, (size_t) (*number), f__cf))
  37           && !(f__recpos - *number * len))
  38         err (f__elist->cierr, EOF, "do_ud");
  39       if (i < (size_t) *number)
  40         memset (ptr + i * len, 0, (*number - i) * len);
  41       return 0;
  42 #else
  43       if (fread (ptr, (size_t) len, (size_t) (*number), f__cf) != *number)
  44         err (f__elist->cierr, EOF, "do_ud");
  45       else
  46         return (0);
  47 #endif
  48     }
  49   (void) fwrite (ptr, (size_t) len, (size_t) (*number), f__cf);
  50   return (0);
  51 }
  52
  53 integer
  54 do_uio (ftnint * number, char *ptr, ftnlen len)
  55 {
  56   if (f__sequential)
  57     return (do_us (number, ptr, len));
  58   else
  59     return (do_ud (number, ptr, len));
  60 }