NAME

TESTING/EIG/dlctes.f

SYNOPSIS

Functions/Subroutines

logical function dlctes (zr, zi, d)
DLCTES

Function/Subroutine Documentation

logical function dlctes (double precision zr, double precision zi, double precision d)

DLCTES

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 successfully sorts eigenvalues.

Parameters



          ZR is DOUBLE PRECISION


          The numerator of the real part of a complex eigenvalue


          (ZR/D) + i*(ZI/D).



          ZI is DOUBLE PRECISION


          The numerator of the imaginary part of a complex eigenvalue


          (ZR/D) + i*(ZI).



          D is DOUBLE PRECISION


          The denominator part of a complex eigenvalue


          (ZR/D) + i*(ZI/D).

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 67 of file dlctes.f.

Author

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