## S3 method for class 'ddmatrix':
expm(x)
## S3 method for class 'matrix':
expm(x)X is a power
series:
$expm(x) = X/1! + X^2/2! + X^3/3! + \dots$
where the powers on the matrix correspond to matrix-matrix multiplications.
expm() directly computes the matrix exponential of a distributed,
dense matrix. The implementation uses Pade' approximations and a
scaling-and-squaring technique (see references).Arithmetic, Reductions, MatMult,
LinAlg