/sys$common/syshlp/helplib.hlb CC, Run-time functions, toascii  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Converts its argument, an 8-bit ASCII character, to a 7-bit ASCII
  character.

  Syntax:

       #include <ctype.h>

       int toascii(char character);