Program f06wnfe ! F06WNF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: nag_wp, zlanhf, ztrttf ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: nin = 5, nout = 6 ! .. Local Scalars .. Real (Kind=nag_wp) :: r_fro, r_inf, r_max, r_one Integer :: i, info, lda, n Character (1) :: transr, uplo ! .. Local Arrays .. Complex (Kind=nag_wp), Allocatable :: a(:,:), af(:) Real (Kind=nag_wp), Allocatable :: work(:) ! .. Executable Statements .. Write (nout,*) 'F06WNF Example Program Results' ! Skip heading in data file Read (nin,*) Read (nin,*) n, uplo, transr lda = n Allocate (a(lda,n),af((n*(n+1))/2),work(n)) ! Read upper or lower triangle of matrix A from data file If (uplo=='L' .Or. uplo=='l') Then Do i = 1, n Read (nin,*) a(i,1:i) End Do Else Do i = 1, n Read (nin,*) a(i,i:n) End Do End If ! Convert A to rectangular full packed storage in AF ! The NAG name equivalent of ztrttf is f01vef Call ztrttf(transr,uplo,n,a,lda,af,info) Write (nout,*) Write (nout,99999) & 'Norms of Hermitian matrix stored in RFP format in AF:' Write (nout,*) ! The NAG name equivalent of zlanhf is f06wnf r_one = zlanhf('1-norm',transr,uplo,n,af,work) Write (nout,99998) 'One norm = ', r_one r_inf = zlanhf('Infinity',transr,uplo,n,af,work) Write (nout,99998) 'Infinity norm = ', r_inf r_fro = zlanhf('Frobenius',transr,uplo,n,af,work) Write (nout,99998) 'Frobenius norm = ', r_fro r_max = zlanhf('Max norm',transr,uplo,n,af,work) Write (nout,99998) 'Maximum norm = ', r_max 99999 Format (1X,A) 99998 Format (1X,A,F9.4) End Program f06wnfe