mirror of https://github.com/pavel-demin/ft8d.git
33 lines
646 B
Fortran
33 lines
646 B
Fortran
real*8 function determ(array,norder)
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implicit real*8 (a-h,o-z)
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real*8 array(10,10)
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determ=1.
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do k=1,norder
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if (array(k,k).ne.0) go to 41
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do j=k,norder
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if(array(k,j).ne.0) go to 31
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enddo
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determ=0.
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go to 60
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31 do i=k,norder
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s8=array(i,j)
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array(i,j)=array(i,k)
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array(i,k)=s8
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enddo
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determ=-1.*determ
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41 determ=determ*array(k,k)
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if(k.lt.norder) then
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k1=k+1
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do i=k1,norder
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do j=k1,norder
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array(i,j)=array(i,j)-array(i,k)*array(k,j)/array(k,k)
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enddo
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enddo
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end if
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enddo
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60 return
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end function determ
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