Changed the exponent function for rounding

lib/functions/acos.js

@@ -4,15 +4,17 @@ var utils = require('../utils')
 	, asin    = require('./asin');
 
 /**
- * Return the tangent of the given `angle`.
+ * Return the arccosine of the given `value`.
  *
- * @param {Unit} angle
+ * @param {Double} trigValue
+ * @param {Unit} output 
  * @return {Unit}
  * @api public
  */
-
 module.exports = function acos(trigValue, output) {
 	var output = typeof output !== 'undefined' ? output : 'deg';
-	var convertedValue = convert(Math.PI / 2, output) - asin(trigValue, output);
+	var convertedValue = convert(Math.PI / 2, output) - asin(trigValue, output).val;
+	var m = Math.pow(10, 9);
+	convertedValue = Math.round(convertedValue * m) / m;
   return new nodes.Unit(convertedValue, output);
 };

lib/functions/asin.js

@@ -3,16 +3,19 @@ var utils = require('../utils')
 	, convert = require('./convert-angle');
 
 /**
- * Return the tangent of the given `angle`.
+ * Return the arcsine of the given `value`.
  *
- * @param {Unit} angle
+ * @param {Double} trigValue
+ * @param {Unit} output 
  * @return {Unit}
  * @api public
  */
 
 module.exports = function atan(trigValue, output) {
 	var output = typeof output !== 'undefined' ? output : 'deg';
+  var m = Math.pow(10, 9);
 	var value = Math.asin(trigValue) ;
 	var convertedValue = convert(value, output);
+	convertedValue = Math.round(convertedValue * m) / m;
   return new nodes.Unit(convertedValue, output);
 };

lib/functions/atan.js

@@ -3,16 +3,19 @@ var utils = require('../utils')
 	, convert = require('./convert-angle');
 
 /**
- * Return the tangent of the given `angle`.
+ * Return the arctangent of the given `value`.
  *
- * @param {Unit} angle
+ * @param {Double} trigValue
+ * @param {Unit} output 
  * @return {Unit}
  * @api public
  */
 
 module.exports = function atan(trigValue, output) {
 	var output = typeof output !== 'undefined' ? output : 'deg';
 	var value = Math.atan(trigValue) ;
+	var m = Math.pow(10, 9);
 	var convertedValue = convert(value, output);
+	convertedValue = Math.round(convertedValue * m) / m;
   return new nodes.Unit(convertedValue, output);
 };

lib/functions/convert-angle.js

@@ -1,3 +1,13 @@
+
+/**
+ * Convert given value's base into the parameter unitName
+ *
+ * @param {Double} value
+ * @param {String} unitName
+ * @return {Double}
+ * @api private
+ */
+
 module.exports = function convertAngle(value, unitName) {
 	var factors = {
 		"rad" : 1,

test/cases/bifs.math.css

@@ -70,3 +70,9 @@
 .math_atan {
   test1: 45deg;
 }
+.math_asin {
+  test1: 44.999999985deg;
+}
+.math_acos {
+  test1: 45.000000015deg;
+}

test/cases/bifs.math.styl

@@ -65,3 +65,9 @@
 
 .math_atan
   test1: atan(tan(45deg)) 
+
+.math_asin
+  test1: asin(sin(45deg)) 
+
+.math_acos
+  test1: acos(cos(45deg))