From ea26d5d89946749499d49e717a1c8a4cc43edf60 Mon Sep 17 00:00:00 2001
From: chzchzchz <chzchzchz@gmail.com>
Date: Sun, 1 Oct 2017 02:20:38 -0700
Subject: [PATCH] fix build under gcc6.4.0

compiler forbids setting complex values by assigning to real() and imag()
---
 include/dsp.h           |  6 ++----
 src/producer_thread.cpp |  8 ++++----
 src/tracker_thread.cpp  | 13 +++++--------
 3 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/include/dsp.h b/include/dsp.h
index fcba157c..23322105 100644
--- a/include/dsp.h
+++ b/include/dsp.h
@@ -44,8 +44,7 @@ inline itpp::cvec fshift(const itpp::cvec &seq,const double f,const double fs) {
   itpp::cvec r(len);
   std::complex<double>coeff;
   for (uint32 t=0;t<len;t++) {
-    coeff.real()=cos(k*t);
-    coeff.imag()=sin(k*t);
+    coeff=std::complex<double>(cos(k*t), sin(k*t));
     //r(t)=seq(t)*exp(k*((double)t));
     r(t)=seq(t)*coeff;
   }
@@ -61,8 +60,7 @@ inline void fshift_inplace(itpp::cvec &seq,const double f,const double fs) {
   const uint32 len=length(seq);
   std::complex<double>coeff;
   for (uint32 t=0;t<len;t++) {
-    coeff.real()=cos(k*t);
-    coeff.imag()=sin(k*t);
+    coeff=std::complex<double>(cos(k*t), sin(k*t));
     //r(t)=seq(t)*exp(k*((double)t));
     seq(t)*=coeff;
   }
diff --git a/src/producer_thread.cpp b/src/producer_thread.cpp
index 6c726180..594b2149 100644
--- a/src/producer_thread.cpp
+++ b/src/producer_thread.cpp
@@ -118,17 +118,17 @@ void producer_thread(
         global_thread_data.raw_seconds_dropped_inc();
       }
       n_samples=BLOCK_SIZE;
-      complex <double> sample_temp;
       for (uint16 t=0;t<BLOCK_SIZE;t++) {
+        double real, imag;
         if (sampbuf_sync.fifo.size()<2) {
           n_samples=t;
           break;
         }
-        sample_temp.real()=(sampbuf_sync.fifo.front()-127.0)/128.0;
+        real=(sampbuf_sync.fifo.front()-127.0)/128.0;
         sampbuf_sync.fifo.pop_front();
-        sample_temp.imag()=(sampbuf_sync.fifo.front()-127.0)/128.0;
+        imag=(sampbuf_sync.fifo.front()-127.0)/128.0;
         sampbuf_sync.fifo.pop_front();
-        samples(t)=sample_temp;
+        samples(t)=complex<double>(real, imag);
         sample_time+=(FS_LTE/16)/(fs_programmed*k_factor);
         //sample_time=itpp_ext::matlab_mod(sample_time,19200.0);
         if (sample_time>19200.0)
diff --git a/src/tracker_thread.cpp b/src/tracker_thread.cpp
index c903685f..db29f98f 100644
--- a/src/tracker_thread.cpp
+++ b/src/tracker_thread.cpp
@@ -156,18 +156,15 @@ void get_fd(
     n_samp_elapsed=(sym_num==0)?128+10:128+9;
   }
   //syms=exp(J*bulk_phase_offset)*elem_mult(syms,exp((-J*2*pi*tracked_cell.fifo.front().late/128)*cn));
-  complex <double> coeff;
-  double phase;
   const double k=2*pi*pdu.late/128;
   bulk_phase_offset=WRAP(bulk_phase_offset+2*pi*n_samp_elapsed*(1/(FS_LTE/16))*-frequency_offset,-pi,pi);
   const complex <double> bpo_coeff=complex<double>(cos(bulk_phase_offset),sin(bulk_phase_offset));
   for (uint8 t=1;t<=36;t++) {
-    phase=-k*t;
-    coeff.real()=cos(phase);
-    coeff.imag()=sin(phase);
-    syms(35+t)*=bpo_coeff*coeff;
-    coeff.imag()=-coeff.imag();
-    syms(36-t)*=bpo_coeff*coeff;
+    double phase=-k*t;
+    double real=cos(phase);
+    double imag=sin(phase);
+    syms(35+t)*=bpo_coeff*complex<double>(real, imag);
+    syms(36-t)*=bpo_coeff*complex<double>(real, -imag);
   }
   // At this point, we have the frequency domain data for this slot and
   // this symbol number. FOC and TOC has already been performed.