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Questions tagged [long-integer]

A long integer is an integer number, typically twice the size of a standard integer. It is represented by the keyword 'long' in several programming languages.

A long integer is an integer number, typically twice the size of a standard integer. It is represented by the keyword 'long' in several programming languages.

http://en.wikipedia.org/wiki/Integer_(computer_science)#Long_integer

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Why does writing a number in scientific notation make a difference in this code?

I am trying to write a code to determine when the number of milliseconds since the beginning of 1970 will exceed the capacity of a long. The following code appears to do the job: public class Y2K { public static void main(String[] args) { …
sedeh
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Proper way of converting string to long int in PHP

I tried (int) "4209531264" and intval("4209531264") but sadly all I get is 2147483647 (I realize this is because of 32 bit architecture or some php dependencies or something). I came up with "4209531264" + 0 which returns the correct result but it…
Maciej Jankowski
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Why does java.util.zip.CRC32.getValue() return a long, not an int?

See the title. The returned value is 32 bits, right? Why not return an int?
Steveo
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Why does C# allow an *implicit* conversion from Long to Float, when this could lose precision?

A similar question Long in Float, why? here does not answer what I am searching for. C# standard allows implicit conversion from long to float. But any long greater than 2^24 when represented as a float is bound to lose its 'value'. C# standard…
Amit Mittal
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Multiplication of two integers in C++

I have a pretty basic question, but I am not sure if I understand the concept or not. Suppose we have: int a = 1000000; int b = 1000000; long long c = a * b; When I run this, c shows negative value, so I changed also a and b to long long and then…
essa
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In Swift, how do you convert a String to Int64?

I am loading in lines from a text file with very large numbers. String has the toInt method, but how do you convert a string to an Int64 which will be able to handle the large numbers? I don't see a toInt64 method or a toLong etc. There must be a…
shim
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What's the difference between unsigned long/long/int in c/c++?

It seems all of them take 4 bytes of space, so what's the difference?
user198729
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Convert a Long to base 36 in scala

How can I convert a Long to base36 ? Along with your answer can explain how you came to the answer? I've checked the scaladocs for Long for converting to a different base, and on converting a Long to a BigInt. I saw that BigInt does have toString(…
AKnox
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how to serialize long to string with jackson?

jackson serializes long x = 1234 to {x:1234} For several reasons I need {x:"1234"} any jackson annotation? thanks.
ramon_salla
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Hibernate returns BigIntegers instead of longs

This is my Sender entity @Entity public class Sender { @Id @GeneratedValue(strategy = GenerationType.AUTO) private long senderId; ... ... public long getSenderId() { return senderId; } public void…
Tristan Van Poucke
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What happened between March 28th and March 29th, 1976 with the java.util.GregorianCalendar?

Trying to use the GregorianCalendar, I got stuck on a singularity while computing the number of days since a particular date. In the scala interpreter, I entered : scala>import java.util.GregorianCalendar scala>import java.util.Calendar scala>val…
Mikaël Mayer
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Why in C# an explicit decimal => long conversion operator is called implicitly, losing precision?

The following C# program silently and implicitly calls an explicit decimal-to-long conversion operator, losing precision. I don't understand why this happens. As far as I understand, in C# explicit operator should not be called implicitly by the…
kaalus
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Long to HEX string

I'm having trouble converting a hexadecimal number in a String to a long and then back again. Here's the code I'm using: private void parseExperiment(){ String str1 = "AA0F245C"; long nr = Long.parseLong(str1, 16); String str2 =…
Chikage
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Will a long-integer work on a 32 bit system?

If I understand it right an int-variable is saving in 32 bit, restricting it to -2 billion to 2 billion something. However if I use a long-variable it will save in 64 bit allowing a lot more numbers to be stored. I'm sitting on a 64 bit system, but…
user3412636
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C# equivalent of 64-bit unsigned long long in C++

I am building a DLL which will be used by C++ using COM. Please let me know what would be the C# equivalent of C++ 64-bit unsigned long long. Will it be ulong type in C# ? Please confirm. Thanks, Gagan
Gags
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