Function SCIPconsGetLhs 

pub unsafe extern "C" fn SCIPconsGetLhs(
    scip: *mut SCIP,
    cons: *mut SCIP_CONS,
    success: *mut c_uint,
) -> f64

returns the left-hand side of an arbitrary SCIP constraint that can be represented as a single linear constraint

@note The success pointer indicates if the individual contraint handler was able to return the involved values