mirror of https://gitlab.com/QEF/q-e.git
26 lines
564 B
Fortran
26 lines
564 B
Fortran
!
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!----------------------------------------------------------------------------
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subroutine nodeno(snlo,jj1,jj2,nodes,idim1)
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!----------------------------------------------------------------------------
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!
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! routine counts the number of nodes of the wavefunction snlo
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! between the points jj1 and jj2
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!
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implicit none
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integer,parameter :: dp = kind(1.d0)
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integer :: jj1,jj2,nodes,idim1
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!
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! wavefunction array
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!
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real(kind=dp) :: snlo(idim1)
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integer :: i
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!
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nodes = 0
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!
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do i = jj1+1,jj2
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if ( snlo(i-1) * snlo(i) .lt. 0.0d0 ) nodes = nodes + 1
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enddo
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return
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end
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