Amending SPE format to use float instead of int values for counts

radixio/spectrumspestream.i.hh

@@ -202,7 +202,7 @@ bool SpectrumSPEStream<data_type>::write_to(const std::string &file) const
     fprintf(stream, "0    %d\n", numberOfChannels - 1);
     for (int i = 0; i < countsByChannel.size(); ++i)
     {
-      fprintf(stream, "%d\n", int(countsByChannel[i]));
+      fprintf(stream, "%10.6f\n", countsByChannel[i]);
     }
     radix_line("    Wrote " << countsByChannel.size() << " data entries");
 
@@ -321,7 +321,7 @@ void SpectrumSPEStream<data_type>::readData(std::ifstream &stream,
     std::getline(stream, line);
     try
     {
-      countsByChannel.push_back(std::stoi(trim_string(line)));
+      countsByChannel.push_back(std::stof(trim_string(line)));
     }
     catch (...)
     {

radixio/tests/tstSpectrum.cc

@@ -292,7 +292,8 @@ TEST(RadixIO, PCFToSPE)
     ASSERT_EQ(countsByChannel1.size(), countsByChannel2.size());
     for (size_t j = 0; j < countsByChannel1.size(); ++j)
     {
-      EXPECT_NEAR(int(countsByChannel1[j]), int(countsByChannel2[j]), 1);
+      EXPECT_NEAR(countsByChannel1[j], countsByChannel2[j],
+                  fabs(countsByChannel1[j] * tolerance));
     }
   }
 }