DLCTES
Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
November 2006
November 2006
Purpose
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.
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.
Arguments
| ZR |
(input) DOUBLE PRECISION
The numerator of the real part of a complex eigenvalue
(ZR/D) + i*(ZI/D). |
| ZI |
(input) DOUBLE PRECISION
The numerator of the imaginary part of a complex eigenvalue
(ZR/D) + i*(ZI). |
| D |
(input) DOUBLE PRECISION
The denominator part of a complex eigenvalue
(ZR/D) + i*(ZI/D). |