Program g01eufe
! G01EUF Example Program Text
! Mark 27.3 Release. NAG Copyright 2021.
! .. Use Statements ..
Use nag_library, Only: g01euf, g01zuf, nag_wp, x02alf
! .. Implicit None Statement ..
Implicit None
! .. Parameters ..
Integer, Parameter :: mode = 1, nin = 5, nout = 6
! .. Local Scalars ..
Real (Kind=nag_wp) :: beta2, c1, c2, rkappa, x, xl, xu, y
Integer :: ifail
! .. Local Arrays ..
Real (Kind=nag_wp) :: rcomm(322)
! .. Executable Statements ..
Write (nout,*) 'G01EUF Example Program Results'
Write (nout,*)
! Skip heading in data file
Read (nin,*)
! Display titles
Write (nout,99998) 'X', 'RKAPPA', 'BETA2', 'Y', 'IFAIL'
Write (nout,*)
c1 = -x02alf()
c2 = -x02alf()
d_lp: Do
Read (nin,*,Iostat=ifail) x, rkappa, beta2
If (ifail/=0) Then
Exit d_lp
End If
If ((rkappa/=c1) .Or. (beta2/=c2)) Then
! If RKAPPA or BETA2 have changed, initialize array RCOMM
ifail = 0
Call g01zuf(rkappa,beta2,mode,xl,xu,rcomm,ifail)
End If
! Compute the value of the Vavilov distribution function
ifail = 0
y = g01euf(x,rcomm,ifail)
! Display results
Write (nout,99999) x, rkappa, beta2, y, ifail
c1 = rkappa
c2 = beta2
End Do d_lp
99999 Format (1X,F4.1,5X,F4.1,5X,F4.1,3X,1P,E12.4,I6)
99998 Format (1X,A2,5X,A6,4X,A5,8X,A1,8X,A5)
End Program g01eufe