48 lines
1.3 KiB
Fortran
48 lines
1.3 KiB
Fortran
program f77_main
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integer maxn, maxnz
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parameter ( maxn = 10000, maxnz = 100000 )
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integer rowind(maxnz), colptr(maxn)
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real*8 values(maxnz), b(maxn)
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integer n, nnz, nrhs, ldb, info, iopt
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integer*8 factors
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*
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call hbcode1(n, n, nnz, values, rowind, colptr)
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*
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nrhs = 1
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ldb = n
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do i = 1, n
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b(i) = 1
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enddo
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*
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* First, factorize the matrix. The factors are stored in *factors* handle.
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iopt = 1
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call c_fortran_dgssv( iopt, n, nnz, nrhs, values, rowind, colptr,
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$ b, ldb, factors, info )
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*
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if (info .eq. 0) then
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write (*,*) 'Factorization succeeded'
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else
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write(*,*) 'INFO from factorization = ', info
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endif
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*
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* Second, solve the system using the existing factors.
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iopt = 2
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call c_fortran_dgssv( iopt, n, nnz, nrhs, values, rowind, colptr,
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$ b, ldb, factors, info )
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*
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if (info .eq. 0) then
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write (*,*) 'Solve succeeded'
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write (*,*) (b(i), i=1, 10)
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else
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write(*,*) 'INFO from triangular solve = ', info
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endif
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* Last, free the storage allocated inside SuperLU
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iopt = 3
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call c_fortran_dgssv( iopt, n, nnz, nrhs, values, rowind, colptr,
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$ b, ldb, factors, info )
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*
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stop
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end
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