node-int64 - npm Package Compare versions

Comparing version 0.3.0 to 0.3.1

Int64.js

@@ -0,1 +1,6 @@
+//     Int64.js
+//
+//     Copyright (c) 2012 Robert Kieffer
+//     MIT License - http://opensource.org/licenses/mit-license.php
+
 /**
@@ -138,3 +143,3 @@ * Support for handling 64-bit int numbers in Javascript (node.js)
     // Running sum of octets, doing a 2's complement
-    var negate = b[0] & 0x80, x = 0, carry = 1;
+    var negate = b[o] & 0x80, x = 0, carry = 1;
     for (var i = 7, m = 1; i >= 0; i--, m *= 256) {
@@ -141,0 +146,0 @@ var v = b[o+i];

package.json

@@ -8,6 +8,6 @@ {
   "contributors"  : [],
-  "dependencies"  : [],
+  "dependencies"  : {},
   "lib"           : ".",
   "main"          : "./Int64.js",
-  "version"       : "0.3.0"
+  "version"       : "0.3.1"
 }

README.md

 JavaScript Numbers are represented as [IEEE 754 double-precision floats](http://steve.hollasch.net/cgindex/coding/ieeefloat.html).  Unfortunately, this means they lose integer precision for values beyond +/- 2^^53.  For projects that need to accurately handle 64-bit ints, such as [node-thrift](https://github.com/wadey/node-thrift), a performant, Number-like class is needed.  Int64 is that class.
 
 Int64 instances look and feel much like JS-native Numbers.  By way of example ...
+```js
+// First, let's illustrate the problem ...
+> (0x123456789).toString(16)
+'123456789' // <- what we expect.
+> (0x123456789abcdef0).toString(16)
+'123456789abcdf00' // <- Ugh!  JS doesn't do big ints. :(
 
-    // First, let's illustrate the problem ...
-    > (0x123456789).toString(16)
-    '123456789' // <- what we expect.
-    > (0x123456789abcdef0).toString(16)
-    '123456789abcdf00' // <- Ugh!  JS doesn't do big ints. :(
+// So let's create a couple Int64s using the above values ...
 
-    // So let's create a couple Int64s using the above values ...
+// Require, of course
+> Int64 = require('node-int64')
 
-    // Require, of course
-    > Int64 = require('node-int64')
+// x's value is what we expect (the decimal value of 0x123456789)
+> x = new Int64(0x123456789)
+[Int64 value:4886718345 octets:00 00 00 01 23 45 67 89]
 
-    // x's value is what we expect (the decimal value of 0x123456789)
-    > x = new Int64(0x123456789)
-    [Int64 value:4886718345 octets:00 00 00 01 23 45 67 89]
+// y's value is Infinity because it's outside the range of integer
+// precision.  But that's okay - it's still useful because it's internal
+// representation (octets) is what we passed in
+> y = new Int64('123456789abcdef0')
+[Int64 value:Infinity octets:12 34 56 78 9a bc de f0]
 
-    // y's value is Infinity because it's outside the range of integer
-    // precision.  But that's okay - it's still useful because it's internal
-    // representation (octets) is what we passed in
-    > y = new Int64('123456789abcdef0')
-    [Int64 value:Infinity octets:12 34 56 78 9a bc de f0]
+// Let's do some math.  Int64's behave like Numbers.  (Sorry, Int64 isn't
+// for doing 64-bit integer arithmetic (yet) - it's just for carrying
+// around int64 values
+> x + 1
[phone]
+> y + 1
+Infinity
 
-    // Let's do some math.  Int64's behave like Numbers.  (Sorry, Int64 isn't
-    // for doing 64-bit integer arithmetic (yet) - it's just for carrying
-    // around int64 values
-    > x + 1
-    4886718346
-    > y + 1
-    Infinity
+// Int64 string operations ...
+> 'value: ' + x
+'value: 4886718345'
+> 'value: ' + y
+'value: Infinity'
+> x.toString(2)
+'100100011010001010110011110001001'
+> y.toString(2)
+'Infinity'
 
-    // Int64 string operations ...
-    > 'value: ' + x
-    'value: 4886718345'
-    > 'value: ' + y
-    'value: Infinity'
-    > x.toString(2)
-    '100100011010001010110011110001001'
-    > y.toString(2)
-    'Infinity'
+// Use JS's isFinite() method to see if the Int64 value is in the
+// integer-precise range of JS values
+> isFinite(x)
+true
+> isFinite(y)
+false
 
-    // Use JS's isFinite() method to see if the Int64 value is in the
-    // integer-precise range of JS values
-    > isFinite(x)
-    true
-    > isFinite(y)
-    false
+// Get an octet string representation.  (Yay, y is what we put in!)
+> x.toOctetString()
+'0000000123456789'
+> y.toOctetString()
+'123456789abcdef0'
 
-    // Get an octet string representation.  (Yay, y is what we put in!)
-    > x.toOctetString()
-    '0000000123456789'
-    > y.toOctetString()
-    '123456789abcdef0'
+// Finally, some other ways to create Int64s ...
 
-    // Finally, some other ways to create Int64s ...
+// Pass hi/lo words
+> new Int64(0x12345678, 0x9abcdef0)
+[Int64 value:Infinity octets:12 34 56 78 9a bc de f0]
 
-    // Pass hi/lo words
-    > new Int64(0x12345678, 0x9abcdef0)
-    [Int64 value:Infinity octets:12 34 56 78 9a bc de f0]
+// Pass a Buffer
+> new Int64(new Buffer([0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0]))
+[Int64 value:Infinity octets:12 34 56 78 9a bc de f0]
 
-    // Pass a Buffer
-    > new Int64(new Buffer([0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0]))
-    [Int64 value:Infinity octets:12 34 56 78 9a bc de f0]
-
-    // Pass a Buffer and offset
-    > new Int64(new Buffer([0,0,0,0,0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0]), 4)
-    [Int64 value:Infinity octets:12 34 56 78 9a bc de f0]
+// Pass a Buffer and offset
+> new Int64(new Buffer([0,0,0,0,0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0]), 4)
+[Int64 value:Infinity octets:12 34 56 78 9a bc de f0]
+```

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205

increased by1.99%

Number of lines in readme file

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9787

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