Community Profile

# Paul Godfrey

Active since 2000

Assistant professor of Electrical Engineering Technology and adjunct instructor of Mathematics. I love to write code to put Mathematics to practical use.

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Submitted

evsv
Construct a matrix with prescribed eigenvalues and singular values Based heavily on a program by Chi-Kwong Li and Roy Mathias,

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Simple SVD
SVD computation using QR decomposition

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erfz
Compute the error function for complex inputs.

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Gamma
Compute a very accurate Gamma function over the entire complex plane.

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Bidiag
Computes upper bidiagonal form of a matrix.

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Special Functions math library
Collection of Special Functions programs.

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ccom Canonical transforms
Perform control state space canonical transforms

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pzplace.m
Calculates the gain vectors required to place the Poles and Zeros of a state space linear system.

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Dett
Computes the determinant of non-square matrices.

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Finds the adjoint of any rectangular matrix

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Symmetric matrix factoring
Factors an nxn matrix into a product of n+1 symmetric matrices

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Rational Polynomial curve fitting
Fits a function to a quotient of polynomials

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Deta
Core routine used to compute zeta, etc functions.

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Rational polynomial fitting

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symfact.m
A function for performing matrix symmetrical factoring.

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Sym2Polys
Symbolic version of the sym2poly function.

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Polygamma Function of Arbitrary Order Valid Complex Plane
Polygamma function arbitrary order valid in the entire complex plane.

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fftd.m
A dimensionless Discrete Fourier Transform program.

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Psi
Compute the psi or digamma function.

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Harmonic Sum Function (harm)
Compute the partial harmonic sum.

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csf2rsf
Converts the complex schur form into the real schur form.

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fftd
Computes the dimensionless fft.

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Companion Matrix
Compute the companion matrix for a vector or matrix.