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Sign function (signum function) - MATLAB sign

https://www.mathworks.com/help/matlab/ref/sign.html
This MATLAB function returns an array Y the same size as x, where each element of Y is: 1 if the corresponding element of x is greater than 0.

Sign of real or complex value - MATLAB sign

https://www.mathworks.com/help/symbolic/sign.html
This MATLAB function returns the sign of real or complex value z.

Sign function (signum function) - MATLAB sign - MathWorks España

https://es.mathworks.com/help/matlab/ref/sign.html
This MATLAB function returns an array Y the same size as x, where each element of Y is: 1 if the corresponding element of x is greater than 0.

sign (MATLAB Functions)

http://www.ece.northwestern.edu/local-apps/matlabhelp/techdoc/ref/sign.html
sign (MATLAB Functions) MATLAB Function Reference sign Signum function Syntax Y = sign(X) Description Y = sign(X) returns an array the same size as , where each element of is: if the corresponding element of is greater than zero the corresponding

numpy.sign — NumPy v1.20 Manual

https://numpy.org/doc/stable/reference/generated/numpy.sign.html
A location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshly-allocated array is returned. A tuple (possible only as a keyword argument) must have length equal

C++ Sign function - From MatLab? - Stack Overflow

https://stackoverflow.com/q/11990030
template <typename T> int signum(const T& val) { // implement signum logic } #include <vector> #include <algorithm> int main() { std::vector<int> data = ....; std::vector<int> signs(data.size()); std::transform(data.begin(), data.end(),

Sign function - Wikipedia

https://en.wikipedia.org/wiki/Sign_function
{\displaystyle \operatorname {csgn} z={\begin{cases}1&{\text{if }}\mathrm {Re} (z)>0,\\-1&{\text{if }}\mathrm {Re} (z)<0,\\\operatorname {sgn} \mathrm {Im} (z)&{\text{if }}\mathrm {Re} (z)=0\end{cases}}}