From d90e5a708b362e00f67ff2bc4c5017be0147ab50 Mon Sep 17 00:00:00 2001
From: Sameer Agarwal <sameeragarwal@google.com>
Date: Sun, 11 Jun 2017 16:26:23 -0700
Subject: [PATCH] Deal with zero sized ranges in Uniform correctly.

Change-Id: I6d5c622869e4795c252fa5c26fffbe4844abc3c9
---
 internal/ceres/random.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/internal/ceres/random.h b/internal/ceres/random.h
index 2a0256006..87d9d77d9 100644
--- a/internal/ceres/random.h
+++ b/internal/ceres/random.h
@@ -43,7 +43,11 @@ inline void SetRandomState(int state) {
 }
 
 inline int Uniform(int n) {
-  return rand() % n;
+  if (n) {
+    return rand() % n;
+  } else {
+    return 0;
+  }
 }
 
 inline double RandDouble() {