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How can I ensure that a division of integers is always rounded up?
...ounded up if necessary. Is there a better way than this? There is a lot of casting going on. :-)
8 Answers
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C++ preprocessor __VA_ARGS__ number of arguments
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@Adam Because I cast {__VA_ARGS__} to int[], it is just int[], regardless of actual content of __VA_ARGS__
– qrdl
Jan 23 '10 at 20:45
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Why do std::shared_ptr work
...late <typename T>
void delete_deleter( void * p ) {
delete static_cast<T*>(p);
}
template <typename T>
class my_unique_ptr {
std::function< void (void*) > deleter;
T * p;
template <typename U>
my_unique_ptr( U * p, std::function< void(void*) > deleter ...
Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
...and Y, there will exist some other value Z such that X+Z will, if properly cast, equal Y and Y-Z will, if properly cast, equal X). If unsigned values were merely storage-location types and not intermediate-expression types (e.g. if there were no unsigned equivalent of the largest integer type, and ...
How to generate a random string of a fixed length in Go?
I want a random string of characters only (uppercase or lowercase), no numbers, in Go. What is the fastest and simplest way to do this?
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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...2_t *)&ff))>>20)-1023; // assumes x86 endianness
This version casts the value to a double, then reads off the exponent, which tells you where the bit was. The fancy shift and subtract is to extract the proper parts from the IEEE value.
It's slightly faster to use floats, but a float ca...
How do I reflect over the members of dynamic object?
...lt;string, object> for its properties, so the solution is as trivial as casting:
IDictionary<string, object> propertyValues = (IDictionary<string, object>)s;
Note that this will not work for general dynamic objects. In these cases you will need to drop down to the DLR via IDynamic...
How to check if an object is a certain type
... type for the TypeName Bar.
In some instances, the type an object has been Cast to is different from the type an object was first instantiated from. In the following example, MyObj is an Integer cast into an Object:
Dim MyVal As Integer = 42
Dim MyObj As Object = CType(MyVal, Object)
So, is MyObj...
When should I use cross apply over inner join?
...N
(
SELECT TOP 2 ID, PERIOD,QTY
FROM DETAILS D
ORDER BY CAST(PERIOD AS DATE)DESC
)D
ON M.ID=D.ID
SQL FIDDLE
The above query generates the following result.
x------x---------x--------------x-------x
| Id | Name | PERIOD | QTY |
x------x---------x--------------x--...
A fast method to round a double to a 32-bit int explained
...e problem of getting that result into an integer variable without the slow cast. (There's also nothing C++-specific about your code.)
– rici
Aug 15 at 19:12
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