# Tagged Questions

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### What's a more optimal native C-language algorithm to set bit $k$? [closed]

Let $n$ be an integer (for example an unsigned int which is usually 32- or 64-bits), let the number of bits be $|n|$. Let $0 \leq k \lt|n|$. I usually do: ...
38 views

### Generate numbers that add up to X

I have isolated the algorithm of a keygenme, but I am running into difficulty with creating the keygen. The key has a length of seven digits, and the sum of each of the digits in the key must be ...
33 views

### Generate Max Value Expression

How to insert * AND + OPERATORS between a given set of integers so that the expression evaluates to the max possible value if Set is [3,4,5,6,-2] it should give 3*4*5*6+-2 and also note that * gets ...
80 views

### Signed binary arithmetic

I'm having trouble with a fairly simply concept, signed binary arithmetic. I know how to do 1's and 2's complement, convert from binary, decimal, octal, and hex, multiply and add bytes and bits, but ...
132 views

### Euclidean Division to avoid need for floating point arithmetic

In simple terms (that Google has been unable to provide the answer), is there an approach to dividing a whole integer by a quotient & remainder? As a specific example, ...
321 views

### Square root using simple arithmetic shift, inversion etc

Suppose we have a function which is sampled by a sampling time 10ms. This function comes in to the computer, then this computer should calculate square root (for every sampling time) from that ...
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### 1/3+2/3 in double precision

When I add 1/3 and 2/3 in double precision, I ended up with $1.\boxed{111\ldots1}1\times2^{-1}$, where the boxed part is the 52-bit mantissa. By the rounding to even rule, I should round it up, right? ...
613 views

### Do calculators have floating point error?

As a programmer, we have been told about floating points errors on computer. Do Calculators have floating point error too? Example. ...
### Using base-2 numbers: $(1010001)_{2}/(11)_{2}=?$
I wanna solve this simple equation using base-2 number system. $(1010001)_{2}/(11)_{2}=?$ I can't remember how to do that, normally I would start with $101/11$ but what should I do this base-2 ...