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How do you generate a random double uniformly distributed between 0 and 1 from C++?
Of course I can think of some answers, but I'd like to know what the standard practice is, to have:
Good standards compliance Good randomness Good speed (speed is more...
Started by static_rtti on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
A truly uniformly distributed random number // in the span (since in most cases lower numbers.
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I need to generate random numbers with in specified interval [max,min]
Also the random numbers should be uniformly distributed over interval, not located to particular point
Currenly I am generating as:
for(int i=0;i<6;i++) { DWORD random= rand()%(...
Started by Alien01 on
, 12 posts
by 11 people.
Answer Snippets (Read the full thread at stackoverflow):
Is there any other method to generate random numbers with uniform distribution?
By their nature, a small sample of ....
If you want numbers to be uniformly distributed over the range, you should break your range up on C++ windows platform..
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I'm writing a wrapper around a fairly large unmanaged API. Almost every imported method returns a common error code when it fails. For now, I'm doing this:
ErrorCode result = Api.Method(); if (result != ErrorCode.SUCCESS) { throw Helper.ErrorToException...
Started by David Brown on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
What happens if you don't check ErrorCode.SUCCESS ? Will your code quickly fail and throw an exception? Can you tell which unmanaged API failed if your managed code throws? If so, consider not checking for errors and just letting the runtime throw when... .
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I wanted to handle all internal errors gracefully, without program termination.
As discussed here , using _set_se_translator catches divide-by-zero errors.
But it does not catch, for example, C runtime library error -1073740777 (0xc0000417) , which can...
Started by Joshua Fox on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
I have used something like this:
template<class K, class V> class MapInitializer { std::map<K,V> m; public: operator std::map<K,V>() const { return m; } MapInitializer& Add... .
You need to install each one.
There is no universal handler.
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Tools like Selenium are good for testing user interactions on the web UI. However, I was curious what are people approaches for strictly testing and verifying that web pages are rendered correctly across a set of browsers?
Is this even possible?
Started by jon on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
Of course this includes different versions of most popular browsers, and you need to check on Windows, Linux... .
Just install as many different browsers as possible and test in all of them .
Manually?
I do not see an alternative if you want strict testing .
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Show, if f maps [0,infty) to R is continuous and there is a b greater than or equal 0 such that the restriction of f to [b,infty) is uniformly continuous, then f is uniformly continuous
Does it make sense to say that setting g = f on domain D = [0,b]....
Started by outermeasure on
, 8 posts
by 4 people.
Answer Snippets (Read the full thread at sosmath):
And then how can I conclude [b,infinity) = [0,infinity....
Such that the restriction of f to [b,infty) is uniformly continuous, then f is uniformly continuous
Does is continuous, then g is uniformly continuous (proof is given in the book).
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Can you tell me when a electric current is not uniformly distributed? In the last paragraph of this answer
http://ca.answers.yahoo.com/question/ind…
there is this
"Note that in some circumstances the current may not be uniformly distributed . A pipe for...
Started by Giulia on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at yahoo):
However, as frequency increases.
At DC the current density in any shaped conductor will be uniform.
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Uniformly continuous maps? Let f : (X, dX) → (Y, dY ) be a uniformly continuous map. Assume that (X, dX)
is a dense subset of (Z, dZ) (with dX the induced metric), and both (Z, dZ) and
(Y, dY ) are complete.
(i) Show that if (x_n)n∈N is a Cauchy sequence...
Started by Jack Baker on
, 1 posts
by 1 people.
Answer Snippets (Read the full thread at yahoo):
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A shaft is uniformly accelerated from 10rev/s to 18 rev/s in 4 sec .
The shaft continues to accelerate at this rate for the next 8 sec . Thereafter the shaft rotates with a uniform angular speed . Find the total time to complete 400 rev .
my answer is...
Started by r-soy on
, 3 posts
by 2 people.
Answer Snippets (Read the full thread at mymathforum):
We are given:
where
for
Hence:
Thus, the number of revolutions in the first 12 second is:
Now, for we have:
where
Hence:
Setting we find:
Thus, the total time in seconds is:
Living in the pools, They soon forget about the sea...— Rush, "Natural Science... .
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How likely is a question on this to come up? I don't want to waste my time on this subject if I don't have to.
Started by burtonnm on
, 5 posts
by 4 people.
Answer Snippets (Read the full thread at actuarialoutpost):
In some cases, the test you have learned will....
That means a uniformly most powerful test usually have to go through the process of deciding if it is a uniformly most powerful test.
Want to use a best test (if possible; i.e., if one exists) .
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