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! BOB ABI THEOREM 3 WRAPPER — C ABI Entry Point
! Sprint 2 Phase 2.2
! ═════════════════════════════════════════════════════════════════════════
module bob_abi_theorem3_wrapper
use, intrinsic :: iso_c_binding
use bob_kinds
use bob_abi
use fortran_haskell_bridge
implicit none
private
public :: bob_theorem3_enforce_genus_zero
public :: bob_theorem3_parse_polynomial
public :: bob_theorem3_destroy
contains
! ─────────────────────────────────────────────────────────────────────
! Main entry: enforce genus zero constraint
! ─────────────────────────────────────────────────────────────────────
subroutine bob_theorem3_enforce_genus_zero(poly_str, energy_budget, status, genus) &
bind(C, name="bob_theorem3_enforce_genus_zero")
character(kind=c_char), intent(in) :: poly_str(*)
integer(c_int), value :: energy_budget
integer(c_int), intent(out) :: status
integer(c_int), intent(out) :: genus
character(len=1024) :: poly_fortran
integer :: i, len_poly
! Convert C string to Fortran string
i = 1
do while (poly_str(i) /= c_null_char .and. i <= 1024)
poly_fortran(i:i) = poly_str(i)
i = i + 1
end do
len_poly = i - 1
! Call Haskell kernel via Fortran bridge
call fortran_call_theorem3_kernel(poly_fortran(1:len_poly), int(energy_budget), status)
genus = status ! For now, status encodes genus
end subroutine bob_theorem3_enforce_genus_zero
! ─────────────────────────────────────────────────────────────────────
! Parse polynomial string to coefficient array
! ─────────────────────────────────────────────────────────────────────
function bob_theorem3_parse_polynomial(poly_str, coeffs, max_coeffs) &
bind(C, name="bob_theorem3_parse_polynomial") result(num_coeffs)
character(kind=c_char), intent(in) :: poly_str(*)
real(c_double), intent(out) :: coeffs(*)
integer(c_int), value :: max_coeffs
integer(c_int) :: num_coeffs
! TODO: Implement polynomial string parser
! For now, stub returns 0 coefficients
num_coeffs = 0
end function bob_theorem3_parse_polynomial
! ─────────────────────────────────────────────────────────────────────
! Cleanup Haskell RTS if needed
! ─────────────────────────────────────────────────────────────────────
subroutine bob_theorem3_destroy() bind(C, name="bob_theorem3_destroy")
! TODO: Cleanup Haskell RTS if needed
end subroutine bob_theorem3_destroy
end module bob_abi_theorem3_wrapper
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