How continuous wavelet transform is implemented?

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C++

algorithm

Hi everybody,

does anybody can tell me how the continuous wavelet transform is implemented as algorithm?

I can guess a lot of convolution have to be executed between the signal and the wavelet at a certain scale, but how the wavelet function is defined?
Once the wavelet function is chosen (haar, mexican hat ad so on) is it enough to discretize the continuous version of the function?

What I have tried:

I only implemented DWT with haar wavelet, but i would like to implement CWT as well