Function xgboost_sys::XGDMatrixSetFloatInfo

pub unsafe extern "C" fn XGDMatrixSetFloatInfo(
    handle: DMatrixHandle,
    field: *const c_char,
    array: *const f32,
    len: bst_ulong
) -> c_int

\brief set float vector to a content in info \param handle a instance of data matrix \param field field name, can be label, weight \param array pointer to float vector \param len length of array \return 0 when success, -1 when failure happens