[cpp]Add a minor comment on TOPPRA_NEARLY_ZERO
#define TOPPRA_LOG_DEBUG(X) ((void)0)
#endif
+// Use for checking if a quantity is very close to zero
+#ifndef TOPPRA_NEARLY_ZERO
#define TOPPRA_NEARLY_ZERO 1e-8
+#endif
/// The TOPP-RA namespace
namespace toppra {
