From a38aaa38c6ff102a14391e38e282f1e34941094a Mon Sep 17 00:00:00 2001
From: bl <bletham@gmail.com>
Date: Wed, 30 May 2018 14:23:37 -0700
Subject: [PATCH] Stan fix for pystan 2.16

---
 R/inst/stan/prophet.stan      | 2 +-
 python/stan/unix/prophet.stan | 2 +-
 python/stan/win/prophet.stan  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/R/inst/stan/prophet.stan b/R/inst/stan/prophet.stan
index 922c960..7394840 100644
--- a/R/inst/stan/prophet.stan
+++ b/R/inst/stan/prophet.stan
@@ -14,7 +14,7 @@ functions {
     for (i in 1:T) {
       while ((cp_idx <= S) && (t[i] >= t_change[cp_idx])) {
         a_row[cp_idx] = 1;
-        cp_idx += 1;
+        cp_idx = cp_idx + 1;
       }
       A[i] = a_row;
     }
diff --git a/python/stan/unix/prophet.stan b/python/stan/unix/prophet.stan
index 922c960..7394840 100644
--- a/python/stan/unix/prophet.stan
+++ b/python/stan/unix/prophet.stan
@@ -14,7 +14,7 @@ functions {
     for (i in 1:T) {
       while ((cp_idx <= S) && (t[i] >= t_change[cp_idx])) {
         a_row[cp_idx] = 1;
-        cp_idx += 1;
+        cp_idx = cp_idx + 1;
       }
       A[i] = a_row;
     }
diff --git a/python/stan/win/prophet.stan b/python/stan/win/prophet.stan
index 83dbf96..5501ea8 100644
--- a/python/stan/win/prophet.stan
+++ b/python/stan/win/prophet.stan
@@ -14,7 +14,7 @@ functions {
     for (i in 1:T) {
       while ((cp_idx <= S) && (t[i] >= t_change[cp_idx])) {
         a_row[cp_idx] = 1;
-        cp_idx += 1;
+        cp_idx = cp_idx + 1;
       }
       A[i] = a_row;
     }