.TH "zungl2.f" 3 "Wed Oct 15 2014" "Version 3.4.2" "LAPACK" \" -*- nroff -*-
.ad l
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.SH NAME
zungl2.f \- 
.SH SYNOPSIS
.br
.PP
.SS "Functions/Subroutines"

.in +1c
.ti -1c
.RI "subroutine \fBzungl2\fP (M, N, K, A, LDA, TAU, WORK, INFO)"
.br
.RI "\fI\fBZUNGL2\fP generates all or part of the unitary matrix Q from an LQ factorization determined by cgelqf (unblocked algorithm)\&. \fP"
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "subroutine zungl2 (integerM, integerN, integerK, complex*16, dimension( lda, * )A, integerLDA, complex*16, dimension( * )TAU, complex*16, dimension( * )WORK, integerINFO)"

.PP
\fBZUNGL2\fP generates all or part of the unitary matrix Q from an LQ factorization determined by cgelqf (unblocked algorithm)\&.  
.PP
\fBPurpose: \fP
.RS 4

.PP
.nf
 ZUNGL2 generates an m-by-n complex matrix Q with orthonormal rows,
 which is defined as the first m rows of a product of k elementary
 reflectors of order n

       Q  =  H(k)**H . . . H(2)**H H(1)**H

 as returned by ZGELQF.
.fi
.PP
 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIM\fP 
.PP
.nf
          M is INTEGER
          The number of rows of the matrix Q. M >= 0.
.fi
.PP
.br
\fIN\fP 
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.nf
          N is INTEGER
          The number of columns of the matrix Q. N >= M.
.fi
.PP
.br
\fIK\fP 
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.nf
          K is INTEGER
          The number of elementary reflectors whose product defines the
          matrix Q. M >= K >= 0.
.fi
.PP
.br
\fIA\fP 
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.nf
          A is COMPLEX*16 array, dimension (LDA,N)
          On entry, the i-th row must contain the vector which defines
          the elementary reflector H(i), for i = 1,2,...,k, as returned
          by ZGELQF in the first k rows of its array argument A.
          On exit, the m by n matrix Q.
.fi
.PP
.br
\fILDA\fP 
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          LDA is INTEGER
          The first dimension of the array A. LDA >= max(1,M).
.fi
.PP
.br
\fITAU\fP 
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.nf
          TAU is COMPLEX*16 array, dimension (K)
          TAU(i) must contain the scalar factor of the elementary
          reflector H(i), as returned by ZGELQF.
.fi
.PP
.br
\fIWORK\fP 
.PP
.nf
          WORK is COMPLEX*16 array, dimension (M)
.fi
.PP
.br
\fIINFO\fP 
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          INFO is INTEGER
          = 0: successful exit
          < 0: if INFO = -i, the i-th argument has an illegal value
.fi
.PP
 
.RE
.PP
\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
.PP
\fBDate:\fP
.RS 4
September 2012 
.RE
.PP

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Definition at line 114 of file zungl2\&.f\&.
.SH "Author"
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Generated automatically by Doxygen for LAPACK from the source code\&.