spectral_methods::calc_lambda_min_max Interface Reference

calculates smallest and largest absolute eigenvalue More...

Public Member Functions
real(sp) function, dimension(2)	calc_lambda_min_max_sp (a, a_shifted, x, ext_x, exchange, tol_opt, maxiter_opt)
real(dp) function, dimension(2)	calc_lambda_min_max_dp (a, a_shifted, x, ext_x, exchange, tol_opt, maxiter_opt)

Detailed Description

calculates smallest and largest absolute eigenvalue

variants in single and double precision

Parameters

[in]	A	linear operator like matrix multiplication
[in]	A_shift	shifted linear operator like matrix multiplication
[in]	x	start vector
[in]	ext_x	extent of x
[in]	exchange	boundary exchange function
[in]	tol_opt	optional stopping tolerance for relative residual
[in]	maxiter_opt	optional maximum number of iterations

Returns

array with (lambda_min, lambda_max)

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The documentation for this interface was generated from the following file:

• /builddir/build/BUILD/scales-ppm-1.0.8.2-build/ppm-1.0.8.2/src/solver/spectral_methods.f90