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LAPACK
3.5.0
LAPACK: Linear Algebra PACKage
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Go to the source code of this file.
Functions/Subroutines | |
logical function | dlctes (ZR, ZI, D) |
DLCTES More... | |
logical function dlctes | ( | double precision | ZR, |
double precision | ZI, | ||
double precision | D | ||
) |
DLCTES
DLCTES returns .TRUE. if the eigenvalue (ZR/D) + sqrt(-1)*(ZI/D) is to be selected (specifically, in this subroutine, if the real part of the eigenvalue is negative), and otherwise it returns .FALSE.. It is used by the test routine DDRGES to test whether the driver routine DGGES succesfully sorts eigenvalues.
[in] | ZR | ZR is DOUBLE PRECISION The numerator of the real part of a complex eigenvalue (ZR/D) + i*(ZI/D). |
[in] | ZI | ZI is DOUBLE PRECISION The numerator of the imaginary part of a complex eigenvalue (ZR/D) + i*(ZI). |
[in] | D | D is DOUBLE PRECISION The denominator part of a complex eigenvalue (ZR/D) + i*(ZI/D). |