855                 [, $num, $unit] = $value;
859                     $num = round($num, $this->numberPrecision);
861                 return $num . $unit;
928     protected function lib_abs($num) {  argument
929         return array( "number", abs($this->assertNumber($num)), $num[2] );
976     protected function lib_tan($num) {  argument
977         return tan($this->assertNumber($num));
980     protected function lib_sin($num) {  argument
981         return sin($this->assertNumber($num));
984     protected function lib_cos($num) {  argument
985         return cos($this->assertNumber($num));
988     protected function lib_atan($num) {  argument
989         $num = atan($this->assertNumber($num));
990         return array("number", $num, "rad");
993     protected function lib_asin($num) {  argument
994         $num = asin($this->assertNumber($num));
995         return array("number", $num, "rad");
998     protected function lib_acos($num) {  argument
999         $num = acos($this->assertNumber($num));
1000         return array("number", $num, "rad");
1003     protected function lib_sqrt($num) {  argument
1004         return sqrt($this->assertNumber($num));
1274         $num = $this->assertNumber($arg);
1275         return array("number", $num*100, "%");
1665                 $num = hexdec($colorStr);
1669                     $t = $num % $width;
1670                     $num /= $width;