slepc-3.17.1 2022-04-11
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(x**2+y**2), 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.
Location: include/slepcmath.h
Examples
src/eps/tutorials/ex18.c.html
src/eps/tutorials/ex41.c.html
src/pep/tutorials/ex40.c.html
src/pep/tutorials/nlevp/pdde_stability.c.html
Index of all sys routines
Table of Contents for all manual pages
Index of all manual pages