Evaluate polynomial expression
Math Functions / Polynomial Functions
The Polynomial Evaluation block applies a polynomial function
to the real or complex input at the
y = polyval(u) % Equivalent MATLAB code
When you select the Use constant coefficients check
box, you specify the polynomial expression in the Constant
coefficients parameter. When you do not select Use
constant coefficients, a variable polynomial expression
is specified by the input to the
Coeffs port. In
both cases, the polynomial is specified as a vector of real or complex
coefficients in order of descending exponents.
The table below shows some examples of the block's operation for various coefficient vectors.
|Coefficient Vector||Equivalent Polynomial Expression|
Each element of a vector or matrix input to the
is processed independently, and the output size is the same as the
Select to enable the Constant coefficients parameter
and disable the
Coeffs input port.
Specify the vector of polynomial coefficients to apply to the input, in order of descending exponents. This parameter is enabled when you select the Use constant coefficients check box.
Double-precision floating point
Single-precision floating point