LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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slctes.f File Reference

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Functions/Subroutines

LOGICAL function slctes (ZR, ZI, D)
 SLCTES

Function/Subroutine Documentation

LOGICAL function slctes ( real  ZR,
real  ZI,
real  D 
)

SLCTES

Purpose:
 SLCTES 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 SDRGES to test whether the driver
 routine SGGES succesfully sorts eigenvalues.
Parameters
[in]ZR
          ZR is REAL
          The numerator of the real part of a complex eigenvalue
          (ZR/D) + i*(ZI/D).
[in]ZI
          ZI is REAL
          The numerator of the imaginary part of a complex eigenvalue
          (ZR/D) + i*(ZI).
[in]D
          D is REAL
          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.
Date
November 2011

Definition at line 69 of file slctes.f.

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