Bump to v3.10.0.

math/ceil.js

@@ -0,0 +1,26 @@
+define(['../internal/createRound'], function(createRound) {
+
+  /**
+   * Calculates `n` rounded up to `precision`.
+   *
+   * @static
+   * @memberOf _
+   * @category Math
+   * @param {number} n The number to round up.
+   * @param {number} [precision=0] The precision to round up to.
+   * @returns {number} Returns the rounded up number.
+   * @example
+   *
+   * _.ceil(4.006);
+   * // => 5
+   *
+   * _.ceil(6.004, 2);
+   * // => 6.01
+   *
+   * _.ceil(6040, -2);
+   * // => 6100
+   */
+  var ceil = createRound('ceil');
+
+  return ceil;
+});

math/floor.js

@@ -0,0 +1,26 @@
+define(['../internal/createRound'], function(createRound) {
+
+  /**
+   * Calculates `n` rounded down to `precision`.
+   *
+   * @static
+   * @memberOf _
+   * @category Math
+   * @param {number} n The number to round down.
+   * @param {number} [precision=0] The precision to round down to.
+   * @returns {number} Returns the rounded down number.
+   * @example
+   *
+   * _.floor(4.006);
+   * // => 4
+   *
+   * _.floor(0.046, 2);
+   * // => 0.04
+   *
+   * _.floor(4060, -2);
+   * // => 4000
+   */
+  var floor = createRound('floor');
+
+  return floor;
+});

math/round.js

@@ -0,0 +1,26 @@
+define(['../internal/createRound'], function(createRound) {
+
+  /**
+   * Calculates `n` rounded to `precision`.
+   *
+   * @static
+   * @memberOf _
+   * @category Math
+   * @param {number} n The number to round.
+   * @param {number} [precision=0] The precision to round to.
+   * @returns {number} Returns the rounded number.
+   * @example
+   *
+   * _.round(4.006);
+   * // => 4
+   *
+   * _.round(4.006, 2);
+   * // => 4.01
+   *
+   * _.round(4060, -2);
+   * // => 4100
+   */
+  var round = createRound('round');
+
+  return round;
+});

math/sum.js

@@ -1,5 +1,8 @@
 define(['../internal/arraySum', '../internal/baseCallback', '../internal/baseSum', '../lang/isArray', '../internal/isIterateeCall', '../internal/toIterable'], function(arraySum, baseCallback, baseSum, isArray, isIterateeCall, toIterable) {
 
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
   /**
    * Gets the sum of the values in `collection`.
    *
@@ -34,13 +37,11 @@ define(['../internal/arraySum', '../internal/baseCallback', '../internal/baseSum
    */
   function sum(collection, iteratee, thisArg) {
     if (thisArg && isIterateeCall(collection, iteratee, thisArg)) {
-      iteratee = null;
+      iteratee = undefined;
     }
-    var noIteratee = iteratee == null;
-
-    iteratee = noIteratee ? iteratee : baseCallback(iteratee, thisArg, 3);
-    return noIteratee
-      ? arraySum(isArray(collection) ? collection : toIterable(collection))
+    iteratee = baseCallback(iteratee, thisArg, 3);
+    return iteratee.length == 1
+      ? arraySum(isArray(collection) ? collection : toIterable(collection), iteratee)
       : baseSum(collection, iteratee);
   }