add wantevtdata if event output should be sent to caller

src/include/ngspice/ipctiein.h

@@ -90,6 +90,7 @@ typedef struct {
 
 
 extern  Ipc_Tiein_t  g_ipc;
+extern bool wantevtdata;
 
 
 #endif

src/spicelib/analysis/dcpss.c

@@ -476,7 +476,7 @@ DCpss(CKTcircuit *ckt,
 #ifdef XSPICE
 /* gtri - modify - wbk - 12/19/90 - Send IPC stuff */
 
-    if(g_ipc.enabled) {
+    if ((g_ipc.enabled) || wantevtdata) {
 
         if (pss_state == PSS)
         {

src/spicelib/analysis/dctran.c

@@ -429,7 +429,7 @@ DCtran(CKTcircuit *ckt,
 #ifdef XSPICE
 /* gtri - modify - wbk - 12/19/90 - Send IPC stuff */
 
-    if(g_ipc.enabled) {
+    if ((g_ipc.enabled) || wantevtdata) {
 
         /* Send event-driven results */
         EVTdump(ckt, IPC_ANAL_TRAN, 0.0);

src/spicelib/analysis/dctrcurv.c

@@ -376,7 +376,7 @@ DCtrCurv(CKTcircuit *ckt, int restart)
         /* If first time through, call CKTdump to output Operating Point info */
         /* for Mspice compatibility */
 
-        if (g_ipc.enabled && firstTime) {
+        if (((g_ipc.enabled) || wantevtdata) && firstTime) {
             ipc_send_dcop_prefix();
             CKTdump(ckt, 0.0, plot);
             ipc_send_dcop_suffix();