.TH "zlanhs.f" 3 "Sun May 26 2013" "Version 3.4.1" "LAPACK" \" -*- nroff -*-
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.nh
.SH NAME
zlanhs.f \- 
.SH SYNOPSIS
.br
.PP
.SS "Functions/Subroutines"

.in +1c
.ti -1c
.RI "DOUBLE PRECISION function \fBzlanhs\fP (NORM, N, A, LDA, WORK)"
.br
.RI "\fI\fBZLANHS\fP \fP"
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.SH "Function/Subroutine Documentation"
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.SS "DOUBLE PRECISION function zlanhs (characterNORM, integerN, complex*16, dimension( lda, * )A, integerLDA, double precision, dimension( * )WORK)"

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\fBZLANHS\fP  
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\fBPurpose: \fP
.RS 4

.PP
.nf
 ZLANHS  returns the value of the one norm,  or the Frobenius norm, or
 the  infinity norm,  or the  element of  largest absolute value  of a
 Hessenberg matrix A.
.fi
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.RE
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\fBReturns:\fP
.RS 4
ZLANHS 
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.nf
    ZLANHS = ( max(abs(A(i,j))), NORM = 'M' or 'm'
             (
             ( norm1(A),         NORM = '1', 'O' or 'o'
             (
             ( normI(A),         NORM = 'I' or 'i'
             (
             ( normF(A),         NORM = 'F', 'f', 'E' or 'e'

 where  norm1  denotes the  one norm of a matrix (maximum column sum),
 normI  denotes the  infinity norm  of a matrix  (maximum row sum) and
 normF  denotes the  Frobenius norm of a matrix (square root of sum of
 squares).  Note that  max(abs(A(i,j)))  is not a consistent matrix norm.
.fi
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.RE
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\fBParameters:\fP
.RS 4
\fINORM\fP 
.PP
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          NORM is CHARACTER*1
          Specifies the value to be returned in ZLANHS as described
          above.
.fi
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.br
\fIN\fP 
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          N is INTEGER
          The order of the matrix A.  N >= 0.  When N = 0, ZLANHS is
          set to zero.
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\fIA\fP 
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          A is COMPLEX*16 array, dimension (LDA,N)
          The n by n upper Hessenberg matrix A; the part of A below the
          first sub-diagonal is not referenced.
.fi
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.br
\fILDA\fP 
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          LDA is INTEGER
          The leading dimension of the array A.  LDA >= max(N,1).
.fi
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.br
\fIWORK\fP 
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.nf
          WORK is DOUBLE PRECISION array, dimension (MAX(1,LWORK)),
          where LWORK >= N when NORM = 'I'; otherwise, WORK is not
          referenced.
.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
.RS 4
November 2011 
.RE
.PP

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Definition at line 110 of file zlanhs\&.f\&.
.SH "Author"
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Generated automatically by Doxygen for LAPACK from the source code\&.