Function pio_dc_opf_preparation_branch_at 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pio_dc_opf_preparation_branch_at(
    preparation: *const PioDcOpfPreparation,
    index: usize,
    output: *mut PioDcOpfBranchView,
    error: *mut *mut PioError,
) -> bool

Read one active branch row of a DC OPF preparation.

Safety

Pointers and handles must satisfy the crate-level safety requirements.