nl_tokens: precision
pl_tokens: function precision ( a ) { // http://stackoverflow.com/a/27865285/1181761 // guard for NaN if ( a === a ) { var e = 1 ; while ( Math . round ( a * e ) / e !== a ) e *= 10 ; return Math . <mask> ( Math . log ( e ) / Math . LN10 ) ; } else { return 0 ; } }