long-integer

How to convert from long long to int and the other way back in c++ ?? also what are the properties of long long , especially its maximum size, thank in advance .. Type long long is typically 64 bits. Type int is likely to be 32 bits, but not on all machines. If you cast an int to a long long, you can do my_long_long = (long long) my_int and it will be just fine. If you go the other direction, like my_int = (int) my_long_long and the int is smaller than 64-bits, it won't be able to hold all the information, so the result may not be correct. int is guaranteed to be at least 16 bits wide. On

For any algorithmic problem, an error of 10 -6 is allowed. I declared a long double as a variable in my first solution and got a WA. But, when I declared a variable as double , I got an AC. I want to know why this decision was made because long double is known to be more accurate than double . I have not changed anything except variables, output methods. Here is my code: #include <iostream> #include <string> #include <cmath> #include <vector> #include <queue> #include <deque> #include <algorithm> using namespace std; #define pi 3.141592653589 int main() { double x; double y; double r = 0.0;

I have 3 very large signed integers. long x = long.MaxValue; long y = long.MaxValue - 1; long z = long.MaxValue - 2; I want to calculate their truncated average. Expected average value is long.MaxValue - 1 , which is 9223372036854775806 . It is impossible to calculate it as: long avg = (x + y + z) / 3; // 3074457345618258600 Note: I read all those questions about average of 2 numbers, but I don't see how that technique can be applied to average of 3 numbers. It would be very easy with the usage of BigInteger , but let's assume I cannot use it. BigInteger bx = new BigInteger(x); BigInteger by =

My Fibonacci calculator works fine, but when going up to higher numbers the result comes up negative, as it would if it was an Integer over its max value. It is working with a cache java.util.Map<Integer, Long> . Everything that goes into the Map is exactly what is expected, but when printing it out I get e.g. for 291: -784134397488903422 According to http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fibCalcX.html , it should be: 2923602405716568564338475449381171413803636207598822186175234 It seems something goes wrong with my Long s, but I am not sure yet, what exactly. Could

This number falls into the long range, so why do I get the error: Exception in thread "main" java.lang.Error: Unresolved compilation problem: The literal 8751475143 of type int is out of range Make it long n = 8751475143L; L will make it long literal by default its int An integer literal is of type long if it is suffixed with an ASCII letter L or l (ell); otherwise it is of type int (§4.2.1). The suffix L is preferred, because the letter l (ell) is often hard to distinguish from the digit 1 (one). [..] The target of the assignment isn't taken into account when parsing the literal - so you need

I was looking for a query which picks data from a table having Blob column and update a table having LONG RAW column. It seems Oracle supports only up to 4000 characters. Is there a way to copy full data from blob to long raw. I was using the follwing query insert into APPDBA.QA_SOFTWARE_DUMMY select SOFTWARE_ID, UPDATED_BY, CREATE_CHANGE_DATE, FILE_NAME, DBMS_LOB.SUBSTR(SOFTWARE_FILE, 4000) SOFTWARE_FILE, SOFTWARE_TYPE from APPDBA.QA_SOFTWARE_DUMMY_TEST ; but DBMS_LOB.SUBSTR supports only upto 4000 characters. Any help is highly appreciated. Vincent Malgrat PL/SQL will only read/write the

I have a date value, which I'm told is 8 bytes, a single "long" (aka int64) value, and converted to hex: 60f347d15798c901 How can I convert this and values like this, using PHP, into a time/date? Converting it to decimal gives me: 96 243 71 209 87 152 201 1 A little more info: the original value is a C# DateTime, and should represent a time/date about 2 or 3 weeks ago. (Thanks to thomasrutter's post, which gave me the Windows filetime epoch): The given date appears to be a Windows 64-bit little-endian file date-time, 60 f3 47 d1 57 98 c9 01, which is equivalent to the quadword 01c99857d147f360