From 075c0386d6de7f865a3f2a1ec3cf894efcecaffa Mon Sep 17 00:00:00 2001
From: Marc Wolf <marc.wolf@camras.nl>
Date: Sat, 7 Dec 2024 20:56:42 +0100
Subject: [PATCH] compile isnan issue

---
 .gitignore          | 15 +++++++++++++++
 vrt_channelizer.cpp |  3 ++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 1c9bdd0..4769602 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,18 @@ control_vrt
 sigmf_to_vrt
 .DS_Store
 build/*
+.cproject
+.project
+.settings/
+CMakeCache.txt
+CMakeFiles/*
+cmake_install.cmake
+play_vrt
+rfspace_to_vrt
+rtlsdr_to_vrt
+usrp_to_vrt
+vrt_channelizer
+vrt_metadata
+vrt_rffft
+vrt_to_stdout
+vrt_to_udp
diff --git a/vrt_channelizer.cpp b/vrt_channelizer.cpp
index 73cddd9..e43b7c8 100644
--- a/vrt_channelizer.cpp
+++ b/vrt_channelizer.cpp
@@ -3,6 +3,7 @@
 #include <string.h>
 #include <assert.h>
 #include <unistd.h>
+#include <cmath>
 
 #include <boost/format.hpp>
 #include <boost/lexical_cast.hpp>
@@ -508,7 +509,7 @@ int main(int argc, char* argv[])
         if (vrt_packet.extended_context) {
             if (tracking) {
                 tracker_process(rx_buffer, sizeof(rx_buffer), &vrt_packet, &tracker_ext_context);
-                if (!isnan(tracker_ext_context.doppler_rate)) {
+                if (!std::isnan(tracker_ext_context.doppler_rate)) {
                     doppler_rate = tracker_ext_context.doppler_rate;
                     alpha_dop = complexi*2.0*pi*(double)-doppler_rate;
                     step_dop = std::exp(alpha_dop/pow((double)vrt_context.sample_rate,2));