From ede6775ac3f8493ebdbedcf2c7cff8fc84101620 Mon Sep 17 00:00:00 2001
From: Thomas Schlichter <thomas.schlichter@iis.fraunhofer.de>
Date: Thu, 1 Aug 2024 17:19:38 +0200
Subject: [PATCH] fix for compilers that don't support the CMPLX() macro

---
 radio/rfsimulator/apply_channelmod.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/radio/rfsimulator/apply_channelmod.c b/radio/rfsimulator/apply_channelmod.c
index 5bb207e5be..dc35a9bf73 100644
--- a/radio/rfsimulator/apply_channelmod.c
+++ b/radio/rfsimulator/apply_channelmod.c
@@ -166,7 +166,11 @@ void rxAddInput(const c16_t *input_sig,
     }
 
     if (channelDesc->Doppler_phase_inc != 0.0) {
+#ifdef CMPLX
       double complex in = CMPLX(rx_tmp.r, rx_tmp.i);
+#else
+      double complex in = rx_tmp.r + rx_tmp.i * I;
+#endif
       double complex out = in * cexp(channelDesc->Doppler_phase_cur[rxAnt] * I);
       rx_tmp.r = creal(out);
       rx_tmp.i = cimag(out);