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     A64L(S)                   UNIX System V                   A64L(S)



     Name
          a64l, l64a - convert between long integer and base-64 ASCII
          string

     Syntax
          long a64l (s)
          char *s;

          char *l64a (l)
          long l;

     Description
          These functions are used to maintain numbers stored in
          base-64 ASCII characters.  This is a notation by which long
          integers can be represented by up to six characters; each
          character represents a ``digit'' in a radix-64 notation.

          The characters used to represent ``digits'' are . for 0, /
          for 1, 0 through 9 for 2-11, A through Z for 12-37, and a
          through z for 38-63.

          The a64l function takes a pointer to a null-terminated
          base-64 representation and returns a corresponding long
          value.  If the string pointed to by s contains more than six
          characters, a64l will use the first six.

          The a64l function scans the character string from left to
          right, decoding each character as a 6-bit Radix 64 number.

          The l64a function takes a long argument and returns a
          pointer to the corresponding base-64 representation.  If the
          argument is 0, l64a returns a pointer to a null string.

     Note
          The value returned by l64a is a pointer into a static
          buffer, the contents of which are overwritten by each call.

     Standards Conformance
          a64l and l64a are conformant with:
          AT&T SVID Issue 2, Select Code 307-127.

                                                (printed 6/20/89)