make one-line docs for math

sdk/lib/math/math.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Mathematical constants and functions, plus a random number generator.
  */
 library dart.math;
 
 part "jenkins_smi_hash.dart";
@@ skipping 202 matching lines @@
 /**
  * Converts [x] to a double and returns the arc cosine of the value.
  *
  * Returns a value in the range -PI..PI, or NaN if [x] is outside
  * the range -1..1.
  */
 external double acos(num x);
 
 /**
  * Converts [x] to a double and returns the arc sine of the value.
+ * 
  * Returns a value in the range -PI..PI, or  NaN if [x] is outside
  * the range -1..1.
  */
 external double asin(num x);
 
 /**
- * Converts [x] to a dobule and returns the arc tangent of the vlaue.
+ * Converts [x] to a dobule and returns the arc tangent of the value.
+ * 
  * Returns a value in the range -PI/2..PI/2, or NaN if [x] is NaN.
  */
 external double atan(num x);
 
 /**
  * Converts [x] to a double and returns the positive square root of the value.
  *
  * Returns -0.0 if [x] is -0.0, and NaN if [x] is otherwise negative or NaN.
  */
 external double sqrt(num x);
 
 /**
  * Converts [x] to a double and returns the natural exponent, [E],
  * to the power [x].
+ * 
  * Returns NaN if [x] is NaN.
  */
 external double exp(num x);
 
 /**
  * Converts [x] to a double and returns the natural logarithm of the value.
+ * 
  * Returns negative infinity if [x] is equal to zero.
  * Returns NaN if [x] is NaN or less than zero.
  */
 external double log(num x);