RkCvtHira - convert double-width katakana to double-width hiragana

RkCvtHira  converts  the srclen bytes of double-width katakana data to double-width hiragana, starting at
       the area src.  A null character in src is not interpreted as the  end  of  the  string.   The  conversion
       result is stored in the area dst.  Characters that are not subject to conversion are copied as they area.
       The conversion result is truncated to adjust to character boundaries in the EUC code when its byte length
       exceeds  maxdst  -1.   dst  is  padded  with null characters at the end if possible.  EUC code is used to
       represent both src and dst.

       NULL can be specified in dst.  NULL overrides the entire conversion result.

RkCvtHira - convert double-width katakana to double-width hiragana

       This function returns the byte length of the conversion result, or returns 0 if the value  of  maxdst  is
       invalid.

                                                                                                    RKCVTHIRA(3)

#include<canna/RK.h>intRkCvtHira(dst,maxdst,src,srclen)unsignedchar*dst;intmaxdst;unsignedchar*src;intsrclen;