From ca3b32f67d2dcce8cf09612a24fee93aa69c5a7f Mon Sep 17 00:00:00 2001
From: Craig Tiller <ctiller@google.com>
Date: Wed, 12 Apr 2017 09:36:40 -0700
Subject: [PATCH] Handle div0
---
src/core/lib/transport/pid_controller.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/core/lib/transport/pid_controller.c b/src/core/lib/transport/pid_controller.c
index 19cb1c0b36..c851564201 100644
--- a/src/core/lib/transport/pid_controller.c
+++ b/src/core/lib/transport/pid_controller.c
@@ -49,6 +49,7 @@ void grpc_pid_controller_reset(grpc_pid_controller *pid_controller) {
double grpc_pid_controller_update(grpc_pid_controller *pid_controller,
double error, double dt) {
+ if (dt == 0) return pid_controller->last_control_value;
/* integrate error using the trapezoid rule */
pid_controller->error_integral +=
dt * (pid_controller->last_error + error) * 0.5;
--
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