.TH "cptts2.f" 3 "Wed Oct 15 2014" "Version 3.4.2" "LAPACK" \" -*- nroff -*-
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.SH NAME
cptts2.f \- 
.SH SYNOPSIS
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.SS "Functions/Subroutines"

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.RI "subroutine \fBcptts2\fP (IUPLO, N, NRHS, D, E, B, LDB)"
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.RI "\fI\fBCPTTS2\fP solves a tridiagonal system of the form AX=B using the L D LH factorization computed by spttrf\&. \fP"
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.SH "Function/Subroutine Documentation"
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.SS "subroutine cptts2 (integerIUPLO, integerN, integerNRHS, real, dimension( * )D, complex, dimension( * )E, complex, dimension( ldb, * )B, integerLDB)"

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\fBCPTTS2\fP solves a tridiagonal system of the form AX=B using the L D LH factorization computed by spttrf\&.  
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\fBPurpose: \fP
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.nf
 CPTTS2 solves a tridiagonal system of the form
    A * X = B
 using the factorization A = U**H*D*U or A = L*D*L**H computed by CPTTRF.
 D is a diagonal matrix specified in the vector D, U (or L) is a unit
 bidiagonal matrix whose superdiagonal (subdiagonal) is specified in
 the vector E, and X and B are N by NRHS matrices.
.fi
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.RE
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\fBParameters:\fP
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\fIIUPLO\fP 
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          IUPLO is INTEGER
          Specifies the form of the factorization and whether the
          vector E is the superdiagonal of the upper bidiagonal factor
          U or the subdiagonal of the lower bidiagonal factor L.
          = 1:  A = U**H *D*U, E is the superdiagonal of U
          = 0:  A = L*D*L**H, E is the subdiagonal of L
.fi
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\fIN\fP 
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          N is INTEGER
          The order of the tridiagonal matrix A.  N >= 0.
.fi
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\fINRHS\fP 
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          NRHS is INTEGER
          The number of right hand sides, i.e., the number of columns
          of the matrix B.  NRHS >= 0.
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\fID\fP 
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          D is REAL array, dimension (N)
          The n diagonal elements of the diagonal matrix D from the
          factorization A = U**H *D*U or A = L*D*L**H.
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\fIE\fP 
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          E is COMPLEX array, dimension (N-1)
          If IUPLO = 1, the (n-1) superdiagonal elements of the unit
          bidiagonal factor U from the factorization A = U**H*D*U.
          If IUPLO = 0, the (n-1) subdiagonal elements of the unit
          bidiagonal factor L from the factorization A = L*D*L**H.
.fi
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\fIB\fP 
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          B is REAL array, dimension (LDB,NRHS)
          On entry, the right hand side vectors B for the system of
          linear equations.
          On exit, the solution vectors, X.
.fi
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\fILDB\fP 
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          LDB is INTEGER
          The leading dimension of the array B.  LDB >= max(1,N).
.fi
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.RE
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\fBAuthor:\fP
.RS 4
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\&. 
.RE
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\fBDate:\fP
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September 2012 
.RE
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Definition at line 114 of file cptts2\&.f\&.
.SH "Author"
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Generated automatically by Doxygen for LAPACK from the source code\&.