js-big-decimal - npm Package Compare versions

Comparing version 1.1.8 to 1.2.0

dist/node/big-decimal.d.ts

@@ -0,3 +1,5 @@
+import { RoundingModes as Modes } from './roundingModes';
 declare class bigDecimal {
     private value;
+    static RoundingModes: typeof Modes;
     private static validate(number);
@@ -8,4 +10,4 @@ constructor(number?: number | string);
     getPrettyValue(digits: any, separator: any): string;
-    static round(number: any, precision?: number): string;
-    round(precision?: number): bigDecimal;
+    static round(number: any, precision?: number, mode?: Modes): string;
+    round(precision?: number, mode?: Modes): bigDecimal;
     static floor(number: any): any;
@@ -12,0 +14,0 @@ floor(): bigDecimal;

dist/node/js-big-decimal.js

@@ -73,3 +73,3 @@ (function webpackUniversalModuleDefinition(root, factory) {
 /******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(__webpack_require__.s = 2);
+/******/ 	return __webpack_require__(__webpack_require__.s = 3);
 /******/ })
@@ -194,4 +194,15 @@ /************************************************************************/
 Object.defineProperty(exports, "__esModule", { value: true });
-function roundOff(input, n) {
+var roundingModes_1 = __webpack_require__(2);
+/**
+ *
+ * @param input the number to round
+ * @param n precision
+ * @param mode Rounding Mode
+ */
+function roundOff(input, n, mode) {
     if (n === void 0) { n = 0; }
+    if (mode === void 0) { mode = roundingModes_1.RoundingModes.HALF_EVEN; }
+    if (mode === roundingModes_1.RoundingModes.UNNECESSARY) {
+        throw new Error("UNNECESSARY Rounding Mode has not yet been implemented");
+    }
     if (typeof (input) == 'number')
@@ -205,3 +216,3 @@ input = input.toString();
     var parts = input.split('.'), partInt = parts[0], partDec = parts[1];
-    //handle case of -ve n
+    //handle case of -ve n: roundOff(12564,-2)=12600
     if (n < 0) {
@@ -214,9 +225,10 @@ n = -n;
             input = prefix + '.' + partInt.substr(partInt.length - n) + partDec;
-            prefix = roundOff(input);
+            prefix = roundOff(input, 0, mode);
             return (neg ? '-' : '') + prefix + (new Array(n + 1).join('0'));
         }
     }
+    // handle case when integer output is desired
     if (n == 0) {
         var l = partInt.length;
-        if (greaterThanFive(parts[1], partInt)) {
+        if (greaterThanFive(parts[1], partInt, neg, mode)) {
             return (neg ? '-' : '') + increment(partInt);
@@ -226,2 +238,3 @@ }
     }
+    // handle case when n>0
     if (!parts[1]) {
@@ -235,3 +248,3 @@ return (neg ? '-' : '') + partInt + '.' + (new Array(n + 1).join('0'));
     var rem = parts[1].substring(n);
-    if (rem && greaterThanFive(rem, partDec)) {
+    if (rem && greaterThanFive(rem, partDec, neg, mode)) {
         partDec = increment(partDec);
@@ -245,7 +258,26 @@ if (partDec.length > n) {
 exports.roundOff = roundOff;
-function greaterThanFive(part, pre) {
-    if (!part)
+function greaterThanFive(part, pre, neg, mode) {
+    if (!part || part === new Array(part.length + 1).join('0'))
         return false;
-    var five = '5' + (new Array(part.length + 1).join('0'));
-    return (part > five || (part == '5' && parseInt(pre[pre.length - 1]) % 2 == 1));
+    // #region UP, DOWN, CEILING, FLOOR 
+    if (mode === roundingModes_1.RoundingModes.DOWN || (!neg && mode === roundingModes_1.RoundingModes.FLOOR) ||
+        (neg && mode === roundingModes_1.RoundingModes.CEILING))
+        return false;
+    if (mode === roundingModes_1.RoundingModes.UP || (neg && mode === roundingModes_1.RoundingModes.FLOOR) ||
+        (!neg && mode === roundingModes_1.RoundingModes.CEILING))
+        return true;
+    // #endregion
+    // case when part !== five
+    var five = '5' + (new Array(part.length).join('0'));
+    if (part > five)
+        return true;
+    else if (part < five)
+        return false;
+    // case when part === five
+    switch (mode) {
+        case roundingModes_1.RoundingModes.HALF_DOWN: return false;
+        case roundingModes_1.RoundingModes.HALF_UP: return true;
+        case roundingModes_1.RoundingModes.HALF_EVEN:
+        default: return (parseInt(pre[pre.length - 1]) % 2 == 1);
+    }
 }
@@ -282,8 +314,50 @@ function increment(part, c) {
 
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * CEILING
+ * Rounding mode to round towards positive infinity.
+ * DOWN
+ * Rounding mode to round towards zero.
+ * FLOOR
+ * Rounding mode to round towards negative infinity.
+ * HALF_DOWN
+ * Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant,
+ * in which case round down.
+ * HALF_EVEN
+ * Rounding mode to round towards the "nearest neighbor" unless both neighbors are equidistant,
+ * in which case, round towards the even neighbor.
+ * HALF_UP
+ * Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant,
+ * in which case round up.
+ * UNNECESSARY
+ * Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary.
+ * UP
+ * Rounding mode to round away from zero.
+ */
+var RoundingModes;
+(function (RoundingModes) {
+    RoundingModes[RoundingModes["CEILING"] = 0] = "CEILING";
+    RoundingModes[RoundingModes["DOWN"] = 1] = "DOWN";
+    RoundingModes[RoundingModes["FLOOR"] = 2] = "FLOOR";
+    RoundingModes[RoundingModes["HALF_DOWN"] = 3] = "HALF_DOWN";
+    RoundingModes[RoundingModes["HALF_EVEN"] = 4] = "HALF_EVEN";
+    RoundingModes[RoundingModes["HALF_UP"] = 5] = "HALF_UP";
+    RoundingModes[RoundingModes["UNNECESSARY"] = 6] = "UNNECESSARY";
+    RoundingModes[RoundingModes["UP"] = 7] = "UP";
+})(RoundingModes = exports.RoundingModes || (exports.RoundingModes = {}));
+
+
+/***/ }),
+/* 3 */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
 var add_1 = __webpack_require__(0);
 var round_1 = __webpack_require__(1);
-var multiply_1 = __webpack_require__(3);
-var divide_1 = __webpack_require__(4);
-var compareTo_1 = __webpack_require__(5);
-var subtract_1 = __webpack_require__(6);
+var multiply_1 = __webpack_require__(4);
+var divide_1 = __webpack_require__(5);
+var compareTo_1 = __webpack_require__(6);
+var subtract_1 = __webpack_require__(7);
+var roundingModes_1 = __webpack_require__(2);
 var bigDecimal = (function () {
@@ -355,14 +429,16 @@ function bigDecimal(number) {
     };
-    bigDecimal.round = function (number, precision) {
+    bigDecimal.round = function (number, precision, mode) {
         if (precision === void 0) { precision = 0; }
+        if (mode === void 0) { mode = roundingModes_1.RoundingModes.HALF_EVEN; }
         number = bigDecimal.validate(number);
         if (isNaN(precision))
             throw Error("Precision is not a number: " + precision);
-        return round_1.roundOff(number, precision);
+        return round_1.roundOff(number, precision, mode);
     };
-    bigDecimal.prototype.round = function (precision) {
+    bigDecimal.prototype.round = function (precision, mode) {
         if (precision === void 0) { precision = 0; }
+        if (mode === void 0) { mode = roundingModes_1.RoundingModes.HALF_EVEN; }
         if (isNaN(precision))
             throw Error("Precision is not a number: " + precision);
-        return new bigDecimal(round_1.roundOff(this.value, precision));
+        return new bigDecimal(round_1.roundOff(this.value, precision, mode));
     };
@@ -438,2 +514,3 @@ bigDecimal.floor = function (number) {
     };
+    bigDecimal.RoundingModes = roundingModes_1.RoundingModes;
     return bigDecimal;
@@ -445,3 +522,3 @@ }());
 /***/ }),
-/* 3 */
+/* 4 */
 /***/ (function(module, exports, __webpack_require__) {
@@ -555,3 +632,3 @@
 /***/ }),
-/* 4 */
+/* 5 */
 /***/ (function(module, exports, __webpack_require__) {
@@ -647,3 +724,3 @@
 /***/ }),
-/* 5 */
+/* 6 */
 /***/ (function(module, exports, __webpack_require__) {
@@ -700,3 +777,3 @@
 /***/ }),
-/* 6 */
+/* 7 */
 /***/ (function(module, exports, __webpack_require__) {
@@ -703,0 +780,0 @@

dist/node/js-big-decimal.min.js

@@ -1,1 +0,1 @@
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t=e.validate(t),s.negate(t)},e.prototype.negate=function(){return new e(s.negate(this.value))},e.RoundingModes=l.RoundingModes,e}();e.exports=f},function(e,t,n){"use strict";function r(e,t){e=e.toString(),t=t.toString();var n=0;"-"==e[0]&&(n++,e=e.substr(1)),"-"==t[0]&&(n++,t=t.substr(1)),e=o(e),t=o(t);var r=0,u=0;-1!=e.indexOf(".")&&(r=e.length-e.indexOf(".")-1),-1!=t.indexOf(".")&&(u=t.length-t.indexOf(".")-1);var a=r+u;if(e=o(e.replace(".","")),t=o(t.replace(".","")),e.length<t.length){var s=e;e=t,t=s}if("0"==t)return"0";for(var l=t.length,f=0,d=[],g=l-1,c="",v=0;v<l;v++)d[v]=e.length-1;for(var v=0;v<2*e.length;v++){for(var p=0,h=t.length-1;h>=g&&h>=0;h--)d[h]>-1&&d[h]<e.length&&(p+=parseInt(e[d[h]--])*parseInt(t[h]));p+=f,f=Math.floor(p/10),c=p%10+c,g--}return c=o(i(c,a)),1==n&&(c="-"+c),c}function i(e,t){return 0==t?e:(e=t>=e.length?new Array(t-e.length+1).join("0")+e:e,e.substr(0,e.length-t)+"."+e.substr(e.length-t,t))}function o(e){for(;"0"==e[0];)e=e.substr(1);if(-1!=e.indexOf("."))for(;"0"==e[e.length-1];)e=e.substr(0,e.length-1);return""==e||"."==e?e="0":"."==e[e.length-1]&&(e=e.substr(0,e.length-1)),"."==e[0]&&(e="0"+e),e}Object.defineProperty(t,"__esModule",{value:!0}),t.multiply=r},function(e,t,n){"use strict";function r(e,t,n){if(void 0===n&&(n=8),0==t)throw new Error("Cannot divide by 0");if(e=e.toString(),t=t.toString(),0==e)return"0";var r=0;"-"==t[0]&&(t=t.substring(1),r++),"-"==e[0]&&(e=e.substring(1),r++);var u=t.indexOf(".")>0?t.length-t.indexOf(".")-1:-1;if(t=i.trim(t.replace(".","")),u>=0){var a=e.indexOf(".")>0?e.length-e.indexOf(".")-1:-1;if(-1==a)e=i.trim(e+new Array(u+1).join("0"));else if(u>a)e=e.replace(".",""),e=i.trim(e+new Array(u-a+1).join("0"));else if(u<a){e=e.replace(".","");var s=e.length-u+u;e=i.trim(e.substring(0,s)+"."+e.substring(s))}else u==a&&(e=i.trim(e.replace(".","")))}var l=0,f=t.length,d="",g=e.indexOf(".")>-1&&e.indexOf(".")<f?e.substring(0,f+1):e.substring(0,f);if(e=e.indexOf(".")>-1&&e.indexOf(".")<f?e.substring(f+1):e.substring(f),g.indexOf(".")>-1){var c=g.length-g.indexOf(".")-1;g=g.replace(".",""),f>g.length&&(c+=f-g.length,g+=new Array(f-g.length+1).join("0")),l=c,d="0."+new Array(c).join("0")}for(n+=2;l<=n;){for(var v=0;parseInt(g)>=parseInt(t);)g=i.add(g,"-"+t),v++;d+=v,e?("."==e[0]&&(d+=".",l++,e=e.substring(1)),g+=e.substring(0,1),e=e.substring(1)):(l||(d+="."),l++,g+="0")}return(1==r?"-":"")+i.trim(o.roundOff(d,n-2))}Object.defineProperty(t,"__esModule",{value:!0});var i=n(0),o=n(1);t.divide=r},function(e,t,n){"use strict";function r(e,t){var n=!1;if("-"==e[0]&&"-"!=t[0])return-1;if("-"!=e[0]&&"-"==t[0])return 1;if("-"==e[0]&&"-"==t[0]&&(e=e.substr(1),t=t.substr(1),n=!0),o=i.pad(e,t),e=o[0],t=o[1],0==e.localeCompare(t))return 0;for(var r=0;r<e.length;r++)if(e[r]!=t[r])return e[r]>t[r]?n?-1:1:n?1:-1;return 0;var o}Object.defineProperty(t,"__esModule",{value:!0});var i=n(0);t.compareTo=r},function(e,t,n){"use strict";function r(e,t){return e=e.toString(),t=t.toString(),t=i(t),o.add(e,t)}function i(e){return e="-"==e[0]?e.substr(1):"-"+e}Object.defineProperty(t,"__esModule",{value:!0});var o=n(0);t.subtract=r,t.negate=i}])});

dist/web/js-big-decimal.js

@@ -64,3 +64,3 @@ var bigDecimal =
 /******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(__webpack_require__.s = 2);
+/******/ 	return __webpack_require__(__webpack_require__.s = 3);
 /******/ })
@@ -185,4 +185,15 @@ /************************************************************************/
 Object.defineProperty(exports, "__esModule", { value: true });
-function roundOff(input, n) {
+var roundingModes_1 = __webpack_require__(2);
+/**
+ *
+ * @param input the number to round
+ * @param n precision
+ * @param mode Rounding Mode
+ */
+function roundOff(input, n, mode) {
     if (n === void 0) { n = 0; }
+    if (mode === void 0) { mode = roundingModes_1.RoundingModes.HALF_EVEN; }
+    if (mode === roundingModes_1.RoundingModes.UNNECESSARY) {
+        throw new Error("UNNECESSARY Rounding Mode has not yet been implemented");
+    }
     if (typeof (input) == 'number')
@@ -196,3 +207,3 @@ input = input.toString();
     var parts = input.split('.'), partInt = parts[0], partDec = parts[1];
-    //handle case of -ve n
+    //handle case of -ve n: roundOff(12564,-2)=12600
     if (n < 0) {
@@ -205,9 +216,10 @@ n = -n;
             input = prefix + '.' + partInt.substr(partInt.length - n) + partDec;
-            prefix = roundOff(input);
+            prefix = roundOff(input, 0, mode);
             return (neg ? '-' : '') + prefix + (new Array(n + 1).join('0'));
         }
     }
+    // handle case when integer output is desired
     if (n == 0) {
         var l = partInt.length;
-        if (greaterThanFive(parts[1], partInt)) {
+        if (greaterThanFive(parts[1], partInt, neg, mode)) {
             return (neg ? '-' : '') + increment(partInt);
@@ -217,2 +229,3 @@ }
     }
+    // handle case when n>0
     if (!parts[1]) {
@@ -226,3 +239,3 @@ return (neg ? '-' : '') + partInt + '.' + (new Array(n + 1).join('0'));
     var rem = parts[1].substring(n);
-    if (rem && greaterThanFive(rem, partDec)) {
+    if (rem && greaterThanFive(rem, partDec, neg, mode)) {
         partDec = increment(partDec);
@@ -236,7 +249,26 @@ if (partDec.length > n) {
 exports.roundOff = roundOff;
-function greaterThanFive(part, pre) {
-    if (!part)
+function greaterThanFive(part, pre, neg, mode) {
+    if (!part || part === new Array(part.length + 1).join('0'))
         return false;
-    var five = '5' + (new Array(part.length + 1).join('0'));
-    return (part > five || (part == '5' && parseInt(pre[pre.length - 1]) % 2 == 1));
+    // #region UP, DOWN, CEILING, FLOOR 
+    if (mode === roundingModes_1.RoundingModes.DOWN || (!neg && mode === roundingModes_1.RoundingModes.FLOOR) ||
+        (neg && mode === roundingModes_1.RoundingModes.CEILING))
+        return false;
+    if (mode === roundingModes_1.RoundingModes.UP || (neg && mode === roundingModes_1.RoundingModes.FLOOR) ||
+        (!neg && mode === roundingModes_1.RoundingModes.CEILING))
+        return true;
+    // #endregion
+    // case when part !== five
+    var five = '5' + (new Array(part.length).join('0'));
+    if (part > five)
+        return true;
+    else if (part < five)
+        return false;
+    // case when part === five
+    switch (mode) {
+        case roundingModes_1.RoundingModes.HALF_DOWN: return false;
+        case roundingModes_1.RoundingModes.HALF_UP: return true;
+        case roundingModes_1.RoundingModes.HALF_EVEN:
+        default: return (parseInt(pre[pre.length - 1]) % 2 == 1);
+    }
 }
@@ -273,8 +305,50 @@ function increment(part, c) {
 
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * CEILING
+ * Rounding mode to round towards positive infinity.
+ * DOWN
+ * Rounding mode to round towards zero.
+ * FLOOR
+ * Rounding mode to round towards negative infinity.
+ * HALF_DOWN
+ * Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant,
+ * in which case round down.
+ * HALF_EVEN
+ * Rounding mode to round towards the "nearest neighbor" unless both neighbors are equidistant,
+ * in which case, round towards the even neighbor.
+ * HALF_UP
+ * Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant,
+ * in which case round up.
+ * UNNECESSARY
+ * Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary.
+ * UP
+ * Rounding mode to round away from zero.
+ */
+var RoundingModes;
+(function (RoundingModes) {
+    RoundingModes[RoundingModes["CEILING"] = 0] = "CEILING";
+    RoundingModes[RoundingModes["DOWN"] = 1] = "DOWN";
+    RoundingModes[RoundingModes["FLOOR"] = 2] = "FLOOR";
+    RoundingModes[RoundingModes["HALF_DOWN"] = 3] = "HALF_DOWN";
+    RoundingModes[RoundingModes["HALF_EVEN"] = 4] = "HALF_EVEN";
+    RoundingModes[RoundingModes["HALF_UP"] = 5] = "HALF_UP";
+    RoundingModes[RoundingModes["UNNECESSARY"] = 6] = "UNNECESSARY";
+    RoundingModes[RoundingModes["UP"] = 7] = "UP";
+})(RoundingModes = exports.RoundingModes || (exports.RoundingModes = {}));
+
+
+/***/ }),
+/* 3 */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
 var add_1 = __webpack_require__(0);
 var round_1 = __webpack_require__(1);
-var multiply_1 = __webpack_require__(3);
-var divide_1 = __webpack_require__(4);
-var compareTo_1 = __webpack_require__(5);
-var subtract_1 = __webpack_require__(6);
+var multiply_1 = __webpack_require__(4);
+var divide_1 = __webpack_require__(5);
+var compareTo_1 = __webpack_require__(6);
+var subtract_1 = __webpack_require__(7);
+var roundingModes_1 = __webpack_require__(2);
 var bigDecimal = (function () {
@@ -346,14 +420,16 @@ function bigDecimal(number) {
     };
-    bigDecimal.round = function (number, precision) {
+    bigDecimal.round = function (number, precision, mode) {
         if (precision === void 0) { precision = 0; }
+        if (mode === void 0) { mode = roundingModes_1.RoundingModes.HALF_EVEN; }
         number = bigDecimal.validate(number);
         if (isNaN(precision))
             throw Error("Precision is not a number: " + precision);
-        return round_1.roundOff(number, precision);
+        return round_1.roundOff(number, precision, mode);
     };
-    bigDecimal.prototype.round = function (precision) {
+    bigDecimal.prototype.round = function (precision, mode) {
         if (precision === void 0) { precision = 0; }
+        if (mode === void 0) { mode = roundingModes_1.RoundingModes.HALF_EVEN; }
         if (isNaN(precision))
             throw Error("Precision is not a number: " + precision);
-        return new bigDecimal(round_1.roundOff(this.value, precision));
+        return new bigDecimal(round_1.roundOff(this.value, precision, mode));
     };
@@ -429,2 +505,3 @@ bigDecimal.floor = function (number) {
     };
+    bigDecimal.RoundingModes = roundingModes_1.RoundingModes;
     return bigDecimal;
@@ -436,3 +513,3 @@ }());
 /***/ }),
-/* 3 */
+/* 4 */
 /***/ (function(module, exports, __webpack_require__) {
@@ -546,3 +623,3 @@
 /***/ }),
-/* 4 */
+/* 5 */
 /***/ (function(module, exports, __webpack_require__) {
@@ -638,3 +715,3 @@
 /***/ }),
-/* 5 */
+/* 6 */
 /***/ (function(module, exports, __webpack_require__) {
@@ -691,3 +768,3 @@
 /***/ }),
-/* 6 */
+/* 7 */
 /***/ (function(module, exports, __webpack_require__) {
@@ -694,0 +771,0 @@

dist/web/js-big-decimal.min.js

@@ -1,1 +0,1 @@
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package.json

 {
   "name": "js-big-decimal",
-  "version": "1.1.8",
+  "version": "1.2.0",
   "description": "Work with large numbers on the client side. Round them off to any required precission.",
@@ -5,0 +5,0 @@ "main": "dist/node/js-big-decimal",

README.md

@@ -93,4 +93,4 @@ # JS Big Decimal
 
-### round(number, precision)
-Returns the rounded value to the specified precision (number of digits after decimal). The default is set to 0 if no argument is passed. 
+### round(number, precision, roundingMode)
+Returns the rounded value to the specified precision (number of digits after decimal). The default precision is set to 0 and rounding mode set to `HALF_EVEN` if no argument is passed. 
 ```javascript
@@ -111,2 +111,20 @@ var value = bigDecimal.round("123.678", 2); // value = "123.68"
 
+Round also supports the following rounding modes (These are same as that of Java 8):
+* `CEILING` - Rounding mode to round towards positive infinity.
+* `DOWN` - Rounding mode to round towards zero.
+* `FLOOR` - Rounding mode to round towards negative infinity.
+* `HALF_DOWN` - Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round down.
+* `HALF_EVEN` - Rounding mode to round towards the "nearest neighbor" unless both neighbors are equidistant, in which case, round towards the even neighbor.
+* `HALF_UP` - Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round up.
+* `UNNECESSARY` (!Not Implemented!)- Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary.
+* `UP` - Rounding mode to round away from zero.
+
+Extensive description of the modes can be found at [Rounding Modes](https://docs.oracle.com/javase/8/docs/api/java/math/RoundingMode.html)
+
+```javascript
+var num = new bigDecimal("123.657");
+var numRound1 = num.round(1, bigDecimal.RoundingModes.DOWN); // "123.6"
+var numRound2 = num.round(2, bigDecimal.RoundingModes.CEILING); // "123.66"
+```
+
 ### floor(number)
@@ -113,0 +131,0 @@ Returns the whole number nearest but not greater than the input number.

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