fraction.js - npm Package Compare versions

Comparing version 4.1.2 to 4.1.3

bigfraction.js

 /**
- * @license Fraction.js v4.1.2 23/05/2021
+ * @license Fraction.js v4.1.3 23/05/2021
  * https://www.xarg.org/2014/03/rational-numbers-in-javascript/
@@ -119,3 +119,3 @@ *
       if (n > 1)
-      factors[n] = (factors[n] || C_ZERO) + C_ONE;
+        factors[n] = (factors[n] || C_ZERO) + C_ONE;
     } else {
@@ -664,5 +664,7 @@ factors[num] = (factors[num] || C_ZERO) + C_ONE;
 
-      places = 10 ** Number(places || 0);
+      places = C_TEN ** BigInt(places || 0);
 
-      return new Fraction(Math.ceil(places * Number(this["s"] * this["n"]) / Number(this["d"])), places);
+      return new Fraction(this["s"] * places * this["n"] / this["d"] + 
+        (places * this["n"] % this["d"] > C_ZERO && this["s"] >= C_ZERO ? C_ONE : C_ZERO), 
+          places);
     },
@@ -677,5 +679,7 @@
 
-      places = 10 ** Number(places || 0);
+      places = C_TEN ** BigInt(places || 0);
 
-      return new Fraction(Math.floor(places * Number(this["s"] * this["n"]) / Number(this["d"])), places);
+      return new Fraction(this["s"] * places * this["n"] / this["d"] - 
+        (places * this["n"] % this["d"] > C_ZERO && this["s"] < C_ZERO ? C_ONE : C_ZERO), 
+          places);
     },
@@ -690,5 +694,22 @@
 
-      places = 10 ** Number(places || 0);
+      places = C_TEN ** BigInt(places || 0);
 
-      return new Fraction(Math.round(places * Number(this["s"] * this["n"]) / Number(this["d"])), places);
+      /* Derivation:
+
+      s >= 0:
+        round(n / d) = trunc(n / d) + (n % d) / d >= 0.5 ? 1 : 0
+                     = trunc(n / d) + 2(n % d) >= d ? 1 : 0
+      s < 0:
+        round(n / d) =-trunc(n / d) - (n % d) / d > 0.5 ? 1 : 0
+                     =-trunc(n / d) - 2(n % d) > d ? 1 : 0
+
+      =>:
+
+      round(s * n / d) = s * trunc(n / d) + s * (C + 2(n % d) > d ? 1 : 0)
+          where C = s >= 0 ? 1 : 0, to fix the >= for the positve case.
+      */
+
+      return new Fraction(this["s"] * places * this["n"] / this["d"] + 
+        this["s"] * ((this["s"] >= C_ZERO ? C_ONE : C_ZERO) + C_TWO * (places * this["n"] % this["d"]) > this["d"] ? C_ONE : C_ZERO), 
+          places);
     },
@@ -695,0 +716,0 @@

fraction.js

 /**
- * @license Fraction.js v4.1.2 23/05/2021
+ * @license Fraction.js v4.1.3 23/05/2021
  * https://www.xarg.org/2014/03/rational-numbers-in-javascript/
@@ -4,0 +4,0 @@ *

fraction.min.js

 /*
-Fraction.js v4.1.2 23/05/2021
+Fraction.js v4.1.3 23/05/2021
 https://www.xarg.org/2014/03/rational-numbers-in-javascript/
@@ -4,0 +4,0 @@

package.json

 {
     "name": "fraction.js",
     "title": "fraction.js",
-    "version": "4.1.2",
+    "version": "4.1.3",
     "homepage": "https://www.xarg.org/2014/03/rational-numbers-in-javascript/",
@@ -6,0 +6,0 @@ "bugs": "https://github.com/infusion/Fraction.js/issues",

README.md

@@ -464,2 +464,9 @@ # Fraction.js - ℚ in JavaScript
 
+Using Fraction.js with TypeScript
+===
+```js
+import Fraction from "fraction.js";
+console.log(Fraction("123/456"));
+```
+
 Coding Style
@@ -466,0 +473,0 @@ ===

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Improved metrics

Total package byte prevSize

67586

increased by1.3%

Lines of code

1533

increased by1.12%

Number of lines in readme file

493

increased by1.44%

No dependency changes