From 08c0f979990ac254439a90fdfe5275997eac23f8 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Sun, 7 Apr 2024 21:36:59 +0200
Subject: [PATCH] optran 0 0 0 0 0 uic may be used to load initial conditions
 (.ic=xxx statements) without staring an op iteration.

---
 src/spicelib/analysis/optran.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/spicelib/analysis/optran.c b/src/spicelib/analysis/optran.c
index f0c7dd76e..8a75fd1b6 100644
--- a/src/spicelib/analysis/optran.c
+++ b/src/spicelib/analysis/optran.c
@@ -161,7 +161,8 @@ void com_optran(wordlist* wl) {
     wltmp = wltmp->wl_next;
     stpstr = wltmp->wl_word;
     opramptime = INPevaluate(&stpstr, &err, 1);
-    if (err || (*stpstr != '\0'))
+    /* optran with uic reads initial conditions */
+    if (err || ((*stpstr != '\0') && !strstr(stpstr, "uic")))
         goto bugquit;
     if (opstepsize > opfinaltime) {
         fprintf(stderr, "Error: Optran step size larger than final time.\n");