SlepcAbsEigenvalue#
Returns the absolute value of a complex number given its real and imaginary parts.
Synopsis#
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(x2+y2), taking care not to cause unnecessary overflow. It is based on LAPACK’s DLAPY2.
In complex scalars, only the first argument is used.
This function is not available from Fortran.
Level#
developer
Location#
Examples#
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