SlepcAbsEigenvalue

Returns the absolute value of a complex number given its real and imaginary parts.

Synopsis

#include "slepcsys.h" 
PetscReal SlepcAbsEigenvalue(PetscScalar x,PetscScalar y)
Not collective

Input parameters

x - the real part of the complex number
y - the imaginary part of the complex number

Notes

This function computes sqrt(x**2+y**2), taking care not to cause unnecessary overflow. It is based on LAPACK's DLAPY2.

Location: src/sys/slepcutil.c
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