>len</I
></TT
> bytes of
<TT
CLASS="PARAMETER"
><I
>src</I
></TT
>.  Bytes of <TT
CLASS="PARAMETER"
><I
>src</I
></TT
> are
combined into 16-bit units according to <TT
CLASS="PARAMETER"
><I
>endian</I
></TT
>.
Places that count in <TT
CLASS="PARAMETER"
><I
>nchar</I
></TT
>.
<TT
CLASS="PARAMETER"
><I
>wchar</I
></TT
> contains 1, 2 or 4 depending on the number of
bytes needed to hold the largest Unicode char counted.  The return value
indicates whether <TT
CLASS="PARAMETER"
><I
>string</I
></TT
> is a well-