Program f04lhfe ! F04LHF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: f01lhf, f04lhf, nag_wp ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: lena = 200, nin = 5, nout = 6 ! .. Local Scalars .. Real (Kind=nag_wp) :: tol Integer :: i, ifail, index, ir, j, k, ldb, n, & nbasek, nbloks ! .. Local Arrays .. Real (Kind=nag_wp), Allocatable :: a(:), b(:,:) Integer, Allocatable :: blkstr(:,:), pivot(:) ! .. Executable Statements .. Write (nout,*) 'F04LHF Example Program Results' Write (nout,*) ! Skip heading in data file Read (nin,*) Read (nin,*) nbloks Allocate (a(lena),blkstr(3,nbloks)) nbasek = 0 n = 0 Do i = 1, nbloks Read (nin,*) blkstr(1:3,i) Do k = 1, blkstr(1,i) If (nbasek+blkstr(2,i)*blkstr(1,i)>lena) Then Write (nout,*) ' Array A is too small for this problem' Go To 100 Else Read (nin,*)(a(nbasek+(j-1)*blkstr(1,i)+k),j=1,blkstr(2,i)) End If End Do nbasek = nbasek + blkstr(2,i)*blkstr(1,i) n = n + blkstr(1,i) End Do Read (nin,*) ir ldb = n Allocate (b(ldb,ir),pivot(n)) tol = 0.0E0_nag_wp ! ifail: behaviour on error exit ! =0 for hard exit, =1 for quiet-soft, =-1 for noisy-soft ifail = 0 Call f01lhf(n,nbloks,blkstr,a,lena,pivot,tol,index,ifail) Read (nin,*)(b(1:n,j),j=1,ir) ifail = 0 Call f04lhf('N',n,nbloks,blkstr,a,lena,pivot,b,ldb,ir,ifail) Write (nout,*) 'Component Solution' Do i = 1, n Write (nout,99999) i, b(i,1:ir) End Do 100 Continue 99999 Format (1X,I5,6X,5F7.4) End Program f04lhfe