java matrix exp(A) calculating the exponential with a matrix

Question

I'm trying to calculate the function e^AT, of which A is a matrix and T is a double value. I have tried using both jama and colt/cern, however a have not found their respective functions. Could any one help me with that?

Answer 1

There is a matrix exponential in jblas. The method is called expm. http://mikiobraun.github.io/jblas/javadoc/org/jblas/MatrixFunctions.html#expm(org.jblas.DoubleMatrix)

The eigen library has an implementation of matrix exponential and also matrix logarithm and there is a Java wrapper called jeigen