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  2. Derivative code - Wikipedia

    en.wikipedia.org/wiki/Derivative_code

    The following procedure can be used to easily test if any source code is derivative code or not. Delete the code in question; Build (or compile) the project; If the build process simply replaces the source code which has been deleted, it is (obviously) code which has been derived from something else and is therefore, by definition, derivative code.

  3. Chebyshev iteration - Wikipedia

    en.wikipedia.org/wiki/Chebyshev_iteration

    1 Example code in MATLAB. 2 See also. 3 References. ... Download QR code; Print/export Download as PDF; Printable version; In other projects

  4. Codes for electromagnetic scattering by spheres - Wikipedia

    en.wikipedia.org/wiki/Codes_for_electromagnetic...

    Codes which calculate exactly electromagnetic scattering by an aggregate of spheres in a single orientation or at an average over individual orientations. 2013 MSTM D. W. Mackowski [19] Fortran Codes which calculate exactly electromagnetic scattering by an aggregate of spheres and spheres within spheres for complex materials.

  5. Automatic differentiation - Wikipedia

    en.wikipedia.org/wiki/Automatic_differentiation

    The source code for a function is replaced by an automatically generated source code that includes statements for calculating the derivatives interleaved with the original instructions. Source code transformation can be implemented for all programming languages, and it is also easier for the compiler to do compile time optimizations.

  6. Vector calculus identities - Wikipedia

    en.wikipedia.org/wiki/Vector_calculus_identities

    Another method of deriving vector and tensor derivative identities is to replace all occurrences of a vector in an algebraic identity by the del operator, provided that no variable occurs both inside and outside the scope of an operator or both inside the scope of one operator in a term and outside the scope of another operator in the same term ...

  7. Clenshaw algorithm - Wikipedia

    en.wikipedia.org/wiki/Clenshaw_algorithm

    In numerical analysis, the Clenshaw algorithm, also called Clenshaw summation, is a recursive method to evaluate a linear combination of Chebyshev polynomials. [1] [2] The method was published by Charles William Clenshaw in 1955.

  8. Five-point stencil - Wikipedia

    en.wikipedia.org/wiki/Five-point_stencil

    An illustration of the five-point stencil in one and two dimensions (top, and bottom, respectively). In numerical analysis, given a square grid in one or two dimensions, the five-point stencil of a point in the grid is a stencil made up of the point itself together with its four "neighbors".

  9. Modelica - Wikipedia

    en.wikipedia.org/wiki/Modelica

    The following code fragment shows an example to calculate the second derivative [23] of a trigonometric function, using OMShell, as a means to develop the program written below. model second_derivative Real l ; Real z = sin ( w * time ); Real m ; parameter Real w = 1 ; equation l = der ( z ); m = der ( l ); end second_derivative ;