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C/C++ Source or Header  |  1993-03-25  |  256 b   |  10 lines
  1.  
  2. extern int _device[];
  3. /*
  4. ** Return "true" if fd is a device, else "false"
  5. */
  6. isatty(fd) int fd; {
  7.   return (_device[fd]);
  8.   }
  9.  
  10.