.TH "cgtts2.f" 3 "Wed Oct 15 2014" "Version 3.4.2" "LAPACK" \" -*- nroff -*-
.ad l
.nh
.SH NAME
cgtts2.f \- 
.SH SYNOPSIS
.br
.PP
.SS "Functions/Subroutines"

.in +1c
.ti -1c
.RI "subroutine \fBcgtts2\fP (ITRANS, N, NRHS, DL, D, DU, DU2, IPIV, B, LDB)"
.br
.RI "\fI\fBCGTTS2\fP solves a system of linear equations with a tridiagonal matrix using the LU factorization computed by sgttrf\&. \fP"
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "subroutine cgtts2 (integerITRANS, integerN, integerNRHS, complex, dimension( * )DL, complex, dimension( * )D, complex, dimension( * )DU, complex, dimension( * )DU2, integer, dimension( * )IPIV, complex, dimension( ldb, * )B, integerLDB)"

.PP
\fBCGTTS2\fP solves a system of linear equations with a tridiagonal matrix using the LU factorization computed by sgttrf\&.  
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\fBPurpose: \fP
.RS 4

.PP
.nf
 CGTTS2 solves one of the systems of equations
    A * X = B,  A**T * X = B,  or  A**H * X = B,
 with a tridiagonal matrix A using the LU factorization computed
 by CGTTRF.
.fi
.PP
 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIITRANS\fP 
.PP
.nf
          ITRANS is INTEGER
          Specifies the form of the system of equations.
          = 0:  A * X = B     (No transpose)
          = 1:  A**T * X = B  (Transpose)
          = 2:  A**H * X = B  (Conjugate transpose)
.fi
.PP
.br
\fIN\fP 
.PP
.nf
          N is INTEGER
          The order of the matrix A.
.fi
.PP
.br
\fINRHS\fP 
.PP
.nf
          NRHS is INTEGER
          The number of right hand sides, i.e., the number of columns
          of the matrix B.  NRHS >= 0.
.fi
.PP
.br
\fIDL\fP 
.PP
.nf
          DL is COMPLEX array, dimension (N-1)
          The (n-1) multipliers that define the matrix L from the
          LU factorization of A.
.fi
.PP
.br
\fID\fP 
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.nf
          D is COMPLEX array, dimension (N)
          The n diagonal elements of the upper triangular matrix U from
          the LU factorization of A.
.fi
.PP
.br
\fIDU\fP 
.PP
.nf
          DU is COMPLEX array, dimension (N-1)
          The (n-1) elements of the first super-diagonal of U.
.fi
.PP
.br
\fIDU2\fP 
.PP
.nf
          DU2 is COMPLEX array, dimension (N-2)
          The (n-2) elements of the second super-diagonal of U.
.fi
.PP
.br
\fIIPIV\fP 
.PP
.nf
          IPIV is INTEGER array, dimension (N)
          The pivot indices; for 1 <= i <= n, row i of the matrix was
          interchanged with row IPIV(i).  IPIV(i) will always be either
          i or i+1; IPIV(i) = i indicates a row interchange was not
          required.
.fi
.PP
.br
\fIB\fP 
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.nf
          B is COMPLEX array, dimension (LDB,NRHS)
          On entry, the matrix of right hand side vectors B.
          On exit, B is overwritten by the solution vectors X.
.fi
.PP
.br
\fILDB\fP 
.PP
.nf
          LDB is INTEGER
          The leading dimension of the array B.  LDB >= max(1,N).
.fi
.PP
 
.RE
.PP
\fBAuthor:\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
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NAG Ltd\&. 
.RE
.PP
\fBDate:\fP
.RS 4
September 2012 
.RE
.PP

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Definition at line 129 of file cgtts2\&.f\&.
.SH "Author"
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Generated automatically by Doxygen for LAPACK from the source code\&.