What is "s-function"

In mathematics, S-function may refer to:

• sigmoid function
• Schur polynomials
• Slesarenko function(smooth function, S-function)
• A function in the Laplace transformed 's-domain'

In physics, it may refer to:

• action functional

In MATLAB, it may refer to:

• A type of dynamically linked subroutine for Simulink.