.TH "dlarrr.f" 3 "Tue Nov 14 2017" "Version 3.8.0" "LAPACK" \" -*- nroff -*-
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.SH NAME
dlarrr.f
.SH SYNOPSIS
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.SS "Functions/Subroutines"

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.RI "subroutine \fBdlarrr\fP (\fBN\fP, D, E, INFO)"
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.RI "\fBDLARRR\fP performs tests to decide whether the symmetric tridiagonal matrix T warrants expensive computations which guarantee high relative accuracy in the eigenvalues\&. "
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.SH "Function/Subroutine Documentation"
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.SS "subroutine dlarrr (integer N, double precision, dimension( * ) D, double precision, dimension( * ) E, integer INFO)"

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\fBDLARRR\fP performs tests to decide whether the symmetric tridiagonal matrix T warrants expensive computations which guarantee high relative accuracy in the eigenvalues\&.  
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\fBPurpose: \fP
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.nf
 Perform tests to decide whether the symmetric tridiagonal matrix T
 warrants expensive computations which guarantee high relative accuracy
 in the eigenvalues.
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.RE
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\fBParameters:\fP
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\fIN\fP 
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          N is INTEGER
          The order of the matrix. N > 0.
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\fID\fP 
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          D is DOUBLE PRECISION array, dimension (N)
          The N diagonal elements of the tridiagonal matrix T.
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\fIE\fP 
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          E is DOUBLE PRECISION array, dimension (N)
          On entry, the first (N-1) entries contain the subdiagonal
          elements of the tridiagonal matrix T; E(N) is set to ZERO.
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\fIINFO\fP 
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          INFO is INTEGER
          INFO = 0(default) : the matrix warrants computations preserving
                              relative accuracy.
          INFO = 1          : the matrix warrants computations guaranteeing
                              only absolute accuracy.
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.RE
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\fBAuthor:\fP
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Univ\&. of Tennessee 
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Univ\&. of California Berkeley 
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Univ\&. of Colorado Denver 
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NAG Ltd\&. 
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\fBDate:\fP
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June 2017 
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\fBContributors: \fP
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Beresford Parlett, University of California, Berkeley, USA 
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 Jim Demmel, University of California, Berkeley, USA 
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 Inderjit Dhillon, University of Texas, Austin, USA 
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 Osni Marques, LBNL/NERSC, USA 
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 Christof Voemel, University of California, Berkeley, USA 
.RE
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Definition at line 96 of file dlarrr\&.f\&.
.SH "Author"
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Generated automatically by Doxygen for LAPACK from the source code\&.
