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logm


Computes the matrix logarithm of a square matrix.


Syntax


res = logm(x)

Input argument


x

a numeric value: scalar or square matrix (double or single)

Output argument


res

a numeric value: a square matrix

Description


expm(x) computes the matrix logarithm of x.

The computation is performed by first block-diagonalizing x and then applying a Pade approximation on each block.

Example


A = eye(3, 3);
res = logm(A)
res = logm(A+i)

History


Version Description
1.0.0 initial version

Author


Allan CORNET

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