Program f01rgfe ! F01RGF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: f01rgf, nag_wp, x04dbf ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: nin = 5, nout = 6 ! .. Local Scalars .. Integer :: i, ifail, lda, m, n ! .. Local Arrays .. Complex (Kind=nag_wp), Allocatable :: a(:,:), theta(:) Character (1) :: dummy(1) ! .. Executable Statements .. Write (nout,*) 'F01RGF Example Program Results' ! Skip heading in data file Read (nin,*) Read (nin,*) m, n Write (nout,*) lda = m Allocate (a(lda,n),theta(m)) Read (nin,*)(a(i,1:n),i=1,m) ! ifail: behaviour on error exit ! =0 for hard exit, =1 for quiet-soft, =-1 for noisy-soft ifail = 0 ! Find the RQ factorization of A Call f01rgf(m,n,a,lda,theta,ifail) Write (nout,*) Write (nout,*) 'RQ factorization of A' Write (nout,*) Write (nout,*) 'Vector THETA' Write (nout,99999) theta(1:m) Write (nout,*) Flush (nout) Call x04dbf('G',' ',m,n,a,lda,'B','F7.4', & 'Matrix A after factorization (R is in left-hand upper triangle)','N', & dummy,'N',dummy,80,0,ifail) 99999 Format (1X,4(' (',F7.4,',',F8.4,')':)) End Program f01rgfe