idz_snorm(m, n, matveca, matvec, its=20)
Matrix row dimension.
int
Matrix column dimension.
int
Function to apply the matrix adjoint to a vector, with call signature :None:None:`y = matveca(x)`, where :None:None:`x` and :None:None:`y` are the input and output vectors, respectively.
function
Function to apply the matrix to a vector, with call signature :None:None:`y = matvec(x)`, where :None:None:`x` and :None:None:`y` are the input and output vectors, respectively.
function
Number of power method iterations.
int
Spectral norm estimate.
float
Estimate spectral norm of a complex matrix by the randomized power method.
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