nl_tokens: ( protected ) r = this - a
pl_tokens: function bnpSubTo ( a , r ) { var this_array = this . <mask> ; var r_array = r . array ; var a_array = a . array ; var i = 0 , c = 0 , m = Math . min ( a . t , this . t ) ; while ( i < m ) { c += this_array [ i ] - a_array [ i ] ; r_array [ i ++ ] = c & BI_DM ; c >>= BI_DB ; } if ( a . t < this . t ) { c -= a . s ; while ( i < this . t ) { c += this_array [ i ] ; r_array [ i ++ ] = c & BI_DM ; c >>= BI_DB ; } c += this . s ; } else { c += this . s ; while ( i < a . t ) { c -= a_array [ i ] ; r_array [ i ++ ] = c & BI_DM ; c >>= BI_DB ; } c -= a . s ; } r . s = ( c < 0 ) ? - 1 : 0 ; if ( c < - 1 ) r_array [ i ++ ] = BI_DV + c ; else if ( c > 0 ) r_array [ i ++ ] = c ; r . t = i ; r . clamp ( ) ; }