From c51fccf5c5d198e6b69c3761e87a863bafba21c6 Mon Sep 17 00:00:00 2001
From: "Matthew L. Fidler" <matthew.fidler@gmail.com>
Date: Fri, 19 Jan 2024 12:10:53 -0600
Subject: [PATCH] Use t0 instead of 0

---
 src/comp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/comp.c b/src/comp.c
index d518f76f..382668f1 100644
--- a/src/comp.c
+++ b/src/comp.c
@@ -379,7 +379,7 @@ double linCmtCompA(rx_solve *rx, unsigned int id, double _t, int linCmt,
     xp = xout = getTime__(ind->ix[ind->idx], ind, 0);
     yp = ypLast = Alast0;
   } else {
-    xp = (ind->idx == 0 ? 0.0 : getTime_(ind->ix[ind->idx-1], ind));
+    xp = (ind->idx == 0 ?  getTime_(ind->ix[0], ind) : getTime_(ind->ix[ind->idx-1], ind));
     xout = getTime__(ind->ix[ind->idx], ind, 0);
     ypLast=getAdvan(ind->idx-1);
   }