Program f01blfe ! F01BLF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: f01blf, f06raf, nag_wp, x02ajf, x04cbf ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: indent = 0, ncols = 80, nin = 5, & nout = 6 Character (1), Parameter :: diag = 'N', matrix = 'G', nolabel = & 'N' Character (8), Parameter :: form = '1P,E12.4' ! .. Local Scalars .. Real (Kind=nag_wp) :: anorm, t Integer :: i, ifail, irank, lda, ldu, m, n Character (9) :: norm Character (27) :: title ! .. Local Arrays .. Real (Kind=nag_wp), Allocatable :: a(:,:), aijmax(:), d(:), du(:), u(:,:) Real (Kind=nag_wp) :: work(1) Integer, Allocatable :: inc(:) Character (1) :: dummy(1) ! .. Intrinsic Procedures .. Intrinsic :: min ! .. Executable Statements .. Write (nout,*) 'F01BLF Example Program Results' Write (nout,*) ! Skip heading in data file Read (nin,*) Read (nin,*) m, n lda = m ldu = n Allocate (a(lda,n),aijmax(n),d(m),du(n),u(ldu,n),inc(n)) Read (nin,*)(a(i,1:n),i=1,m) ! Set t = eps times norm of A. norm = 'Frobenius' anorm = f06raf(norm,m,n,a,lda,work) t = anorm*x02ajf() ! ifail: behaviour on error exit ! =0 for hard exit, =1 for quiet-soft, =-1 for noisy-soft ifail = 0 Call f01blf(m,n,t,a,lda,aijmax,irank,inc,d,u,ldu,du,ifail) Write (nout,*) 'Maximum element in A(K) for I.GE.K and J.GE.K' Write (nout,*) Write (nout,*) ' K Modulus' Write (nout,99999)(i,aijmax(i),i=1,min(n,irank+1)) Write (nout,*) Write (nout,99998) 'Rank = ', irank Write (nout,*) Write (nout,99997) 'T = ', t, ' (machine dependent)' Write (nout,*) Flush (nout) ! Print the result matrix A. title = 'Transpose of pseudo-inverse' ifail = 0 Call x04cbf(matrix,diag,m,n,a,lda,form,title,nolabel,dummy,nolabel, & dummy,ncols,indent,ifail) 99999 Format (1X,I4,2X,1P,E12.4) 99998 Format (1X,A,I5) 99997 Format (1X,A,1P,E11.4,A) End Program f01blfe