% $Header: /cvsroot/html2ps/postscript/width.ps,v 1.1 2005/12/18 07:21:39 Konstantin Exp $

/wc-apply {                        % => PW CW WC
  dup /apply get exec
} def

/wc-create-constant {              % => Value
  <<
    /type  /constant
    /value 4 index
    /apply {                       % => ... PW CW This
      /value get
      exch pop
      exch pop
    }
    /apply-inverse {
      pop pop
    } 
  >>
  
  exch pop
} def

/wc-create-fraction {              % => Value
  <<
    /type /fraction
    /fraction 4 index
    /apply {                       % => ... PW CW This
      /fraction get
      exch pop
      mul
    }
    /apply-inverse {               % => ... PW CW This
      /fraction get
      dup 0 gt {
        div exch pop
      } {
        pop pop pop 0
      } ifelse
    } 
  >>

  exch pop
} def

/wc-create-none {
  <<
    /type /none
    /apply {                       % => ... PW CW This
      pop
      exch pop                     % => ... CW
    }
    /apply-inverse {
      pop pop
    } 
  >>
} def

/wc-is-fraction {                  % => WC
  /type get /fraction eq
} def