add SKEW.P formula

cell/model/FormulaObjects/_xlfnFunctions.js

@@ -59,7 +59,7 @@
 	cFormulaFunctionGroup['Statistical'].push(cBINOM_DIST_RANGE, cCHISQ_TEST, cCOVARIANCE_P,
 		cCOVARIANCE_S, cF_TEST, cFORECAST_ETS, cFORECAST_ETS_CONFINT, cFORECAST_ETS_SEASONALITY, cFORECAST_ETS_STAT,
 		cHYPGEOM_DIST, cMODE_MULT, cMODE_SNGL, cNEGBINOM_DIST, cNORM_DIST, cNORM_INV, cNORM_S_DIST,
-		cNORM_S_INV, cPERMUTATIONA, cPHI, cSKEW_P, cSTDEV_P, cSTDEV_S,
+		cNORM_S_INV, cPERMUTATIONA, cPHI, cSTDEV_P, cSTDEV_S,
 		cT_TEST, cVAR_P, cVAR_S, cWEIBULL_DIST, cZ_TEST);
 	cFormulaFunctionGroup['Financial'] = cFormulaFunctionGroup['Financial'] || [];
 	cFormulaFunctionGroup['Financial'].push(cPDURATION, cRRI);
@@ -75,7 +75,7 @@
 		cERF_PRECISE, cERFC_PRECISE, cDBCS, cUNICHAR, cUNICODE, cBINOM_DIST_RANGE, cCHISQ_TEST,
 		cCOVARIANCE_P, cCOVARIANCE_S, cF_TEST, cFORECAST_ETS, cFORECAST_ETS_CONFINT, cFORECAST_ETS_SEASONALITY,
 		cFORECAST_ETS_STAT, cHYPGEOM_DIST, cMODE_MULT, cMODE_SNGL, cNEGBINOM_DIST, cNORM_DIST,
-		cNORM_INV, cNORM_S_DIST, cNORM_S_INV, cPERMUTATIONA, cPHI, cSKEW_P,
+		cNORM_INV, cNORM_S_DIST, cNORM_S_INV, cPERMUTATIONA, cPHI,
 		cSTDEV_P, cSTDEV_S, cT_TEST, cVAR_P, cVAR_S, cWEIBULL_DIST, cZ_TEST, cPDURATION, cRRI, cAGGREGATE, cMUNIT,
 		cFORMULATEXT, cISFORMULA, cSHEET, cSHEETS);
 
@@ -559,18 +559,6 @@
 	cSHEETS.prototype = Object.create(cBaseFunction.prototype);
 	cSHEETS.prototype.constructor = cSHEETS;
 
-	/**
-	 * @constructor
-	 * @extends {AscCommonExcel.cBaseFunction}
-	 */
-	function cSKEW_P() {
-		cBaseFunction.call(this, "SKEW.P");
-		this.isXLFN = true;
-	}
-
-	cSKEW_P.prototype = Object.create(cBaseFunction.prototype);
-	cSKEW_P.prototype.constructor = cSKEW_P;
-
 	/**
 	 * @constructor
 	 * @extends {AscCommonExcel.cBaseFunction}

cell/model/FormulaObjects/statisticalFunctions.js

@@ -70,7 +70,7 @@
 		cLOGNORMDIST, cMAX, cMAXA, cMEDIAN, cMIN, cMINA, cMODE, cNEGBINOMDIST, cNORMDIST, cNORMINV, cNORMSDIST,
 		cNORMSINV, cPEARSON, cPERCENTILE, cPERCENTILE_EXC, cPERCENTILE_INC, cPERCENTRANK, cPERCENTRANK_EXC,
 		cPERCENTRANK_INC, cPERMUT, cPOISSON, cPOISSON_DIST, cPROB, cQUARTILE, cQUARTILE_EXC, cQUARTILE_INC, cRANK, cRANK_AVG, cRANK_EQ,
-		cRSQ, cSKEW, cSLOPE, cSMALL, cSTANDARDIZE, cSTDEV, cSTDEVA, cSTDEVP, cSTDEVPA, cSTEYX, cTDIST, cT_DIST,
+		cRSQ, cSKEW, cSKEW_P,cSLOPE, cSMALL, cSTANDARDIZE, cSTDEV, cSTDEVA, cSTDEVP, cSTDEVPA, cSTEYX, cTDIST, cT_DIST,
 		cT_DIST_2T, cT_DIST_RT, cT_INV, cT_INV_2T, cTINV, cTREND, cTRIMMEAN, cTTEST, cVAR, cVARA, cVARP, cVARPA,
 		cWEIBULL, cZTEST);
 
@@ -1055,6 +1055,58 @@
 		return res;
 	}
 
+	function skew(x, bSkewp) {
+
+		var sumSQRDeltaX = 0, _x = 0, xLength = 0, sumSQRDeltaXDivstandDev = 0, i;
+		for (i = 0; i < x.length; i++) {
+
+			if (x[i] instanceof cNumber) {
+				_x += x[i].getValue();
+				xLength++;
+			}
+
+		}
+
+		if (xLength <= 2) {
+			return new cError(cErrorType.not_available);
+		}
+
+		_x /= xLength;
+
+		for (i = 0; i < x.length; i++) {
+
+			if (x[i] instanceof cNumber) {
+				sumSQRDeltaX += Math.pow(x[i].getValue() - _x, 2);
+			}
+
+		}
+
+		var standDev;
+		if(bSkewp){
+			standDev = Math.sqrt(sumSQRDeltaX / ( xLength ));
+		}else{
+			standDev = Math.sqrt(sumSQRDeltaX / ( xLength - 1 ));
+		}
+
+		for (i = 0; i < x.length; i++) {
+
+			if (x[i] instanceof cNumber) {
+				sumSQRDeltaXDivstandDev += Math.pow((x[i].getValue() - _x) / standDev, 3);
+			}
+
+		}
+
+		var res;
+		if(bSkewp){
+			res = sumSQRDeltaXDivstandDev / xLength;
+		}else{
+			res = xLength / (xLength - 1) / (xLength - 2) * sumSQRDeltaXDivstandDev;
+		}
+
+		return new cNumber(res);
+	}
+
+
 	function GAMMADISTFUNCTION(fp, fAlpha, fBeta){
 		this.fp = fp;
 		this.fAlpha = fAlpha;
@@ -5988,45 +6040,54 @@
 	cSKEW.prototype.argumentsMin = 1;
 	cSKEW.prototype.Calculate = function (arg) {
 
-		function skew(x) {
-
-			var sumSQRDeltaX = 0, _x = 0, xLength = 0, sumSQRDeltaXDivstandDev = 0, i;
-			for (i = 0; i < x.length; i++) {
-
-				if (x[i] instanceof cNumber) {
-					_x += x[i].getValue();
-					xLength++;
-				}
-
-			}
-
-			if (xLength <= 2) {
-				return new cError(cErrorType.not_available);
-			}
-
-			_x /= xLength;
+		var arr0 = [];
 
-			for (i = 0; i < x.length; i++) {
+		for (var j = 0; j < this.getArguments(); j++) {
 
-				if (x[i] instanceof cNumber) {
-					sumSQRDeltaX += Math.pow(x[i].getValue() - _x, 2);
+			if (arg[j] instanceof cArea || arg[j] instanceof cArea3D) {
+				arg[j].foreach2(function (elem) {
+					if (elem instanceof cNumber) {
+						arr0.push(elem);
+					}
+				});
+			} else if (arg[j] instanceof cRef || arg[j] instanceof cRef3D) {
+				var a = arg[j].getValue();
+				if (a instanceof cNumber) {
+					arr0.push(a);
 				}
-
+			} else if (arg[j] instanceof cArray) {
+				arg[j].foreach(function (elem) {
+					if (elem instanceof cNumber) {
+						arr0.push(elem);
+					}
+				});
+			} else if (arg[j] instanceof cNumber || arg[j] instanceof cBool) {
+				arr0.push(arg[j].tocNumber());
+			} else if (arg[j] instanceof cString) {
+				continue;
+			} else {
+				return this.value = new cError(cErrorType.wrong_value_type);
 			}
 
-			var standDev = Math.sqrt(sumSQRDeltaX / ( xLength - 1 ));
-
-			for (i = 0; i < x.length; i++) {
-
-				if (x[i] instanceof cNumber) {
-					sumSQRDeltaXDivstandDev += Math.pow((x[i].getValue() - _x) / standDev, 3);
-				}
-
-			}
+		}
+		return this.value = skew(arr0);
+	};
 
-			return new cNumber(xLength / (xLength - 1) / (xLength - 2) * sumSQRDeltaXDivstandDev)
+	/**
+	 * @constructor
+	 * @extends {AscCommonExcel.cBaseFunction}
+	 */
+	function cSKEW_P() {
+		this.name = "SKEW.P";
+		this.value = null;
+		this.argumentsCurrent = 0;
+	}
 
-		}
+	cSKEW_P.prototype = Object.create(cBaseFunction.prototype);
+	cSKEW_P.prototype.constructor = cSKEW_P;
+	cSKEW_P.prototype.argumentsMin = 1;
+	cSKEW_P.prototype.isXLFN = true;
+	cSKEW_P.prototype.Calculate = function (arg) {
 
 		var arr0 = [];
 
@@ -6058,7 +6119,7 @@
 			}
 
 		}
-		return this.value = skew(arr0);
+		return this.value = skew(arr0, true);
 	};
 
 	/**