table of contents
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/EIG/zslect.f(3) | Library Functions Manual | /home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/EIG/zslect.f(3) |
NAME¶
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/EIG/zslect.f
SYNOPSIS¶
Functions/Subroutines¶
logical function ZSLECT (z)
ZSLECT
Function/Subroutine Documentation¶
logical function ZSLECT (complex*16 z)¶
ZSLECT
Purpose:
!> !> ZSLECT returns .TRUE. if the eigenvalue Z is to be selected, !> otherwise it returns .FALSE. !> It is used by ZCHK41 to test if ZGEES successfully sorts eigenvalues, !> and by ZCHK43 to test if ZGEESX successfully sorts eigenvalues. !> !> The common block /SSLCT/ controls how eigenvalues are selected. !> If SELOPT = 0, then ZSLECT return .TRUE. when real(Z) is less than !> zero, and .FALSE. otherwise. !> If SELOPT is at least 1, ZSLECT returns SELVAL(SELOPT) and adds 1 !> to SELOPT, cycling back to 1 at SELMAX. !>
Parameters
Z
!> Z is COMPLEX*16 !> The eigenvalue Z. !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 55 of file zslect.f.
Author¶
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Version 3.12.0 | LAPACK |