I did a search for discrete convolution functions in EMT, and there is no function with the letters ‘conv’ in them that I could find. Matlab has the function conv(a,b) to perform convolution on two vectors a and b. The function deconv(a,b) in Matlab performs deconvolution. My college textbook Introduction to Applied Mathematics by Gilbert Strang indicates that discrete convolution is essentially polynomial multiplication.
Fortunately EMT has the function polymult(a,b) which does the same thing as conv(a,b) in Matlab, and polydiv(a,b) does the same thing as deconv(a,b) in Matlab.