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48 lines
832 B
Fortran
48 lines
832 B
Fortran
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subroutine inversetrans(vec,n,mxl,tp)
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implicit none
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integer n
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real vec(n)
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integer i
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integer mxl,tp
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integer inverse
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i=n/(2**mxl) !n-->n/2
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if (tp == 1) then
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inverse=1
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do while (i.le.n)
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call normalizationi(vec,i)
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call update(vec,i,inverse)
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call predict(vec,i,inverse)
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call merge1(vec,i)
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i=i*2
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enddo
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endif
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if (tp == 2) then
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do while (i.le.n)
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call inversestep(vec,i)
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call merge1(vec,i)
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i=i*2
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enddo
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endif
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if (tp == 3) then
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do while (i.le.n)
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call invTransformD8(vec,i)
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i=i*2
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enddo
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endif
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end subroutine
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subroutine normalizationi(x,i)
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implicit none
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real x(*)
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integer i
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integer k
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do k=1,i/2
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x(k)=x(k)/sqrt(2.0)
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enddo
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do k=i/2+1,i
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x(k)=x(k)*sqrt(2.0)
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enddo
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end
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