switch fvalue to float, fix compile issues and warnings steming from change in sizeof(fvalue)

basicmath.cpp

@@ -121,10 +121,10 @@ std::vector<eis::DataPoint> eis::rescale(const std::vector<eis::DataPoint>& data
 	std::vector<eis::DataPoint> output(outputSize);
 	for(size_t i = 0; i < output.size(); ++i)
 	{
-		double position = static_cast<double>(i) / (output.size()-1);
-		double sourcePosF = (data.size()-1)*position;
+		fvalue position = static_cast<double>(i) / (output.size()-1);
+		fvalue sourcePosF = (data.size()-1)*position;
 		size_t sourcePos = (data.size()-1)*position;
-		double frac = sourcePosF - sourcePos;
+		fvalue frac = sourcePosF - sourcePos;
 		output[i].im = data[sourcePos].im*(1-frac) + data[sourcePos+1].im*frac;
 		output[i].omega = data[sourcePos].omega*(1-frac) + data[sourcePos+1].omega*frac;
 	}

eisgenerator/eistype.h

@@ -5,7 +5,7 @@
 #include <cmath>
 #include <filesystem>
 
-typedef double fvalue;
+typedef float fvalue;
 
 namespace eis
 {

eistype.cpp

@@ -53,7 +53,14 @@ EisSpectra eis::loadFromDisk(const std::filesystem::path& path)
 		tokens = tokenize(line, ',');
 		if(tokens.size() != 3)
 			throw file_error("invalid line in " + path.string() + ": " + line);
+
+		#pragma GCC diagnostic push
+		#pragma GCC diagnostic ignored "-Wnarrowing"
+		if constexpr (std::is_same<fvalue, double>::value)
 			out.data.push_back(DataPoint({std::stod(tokens[1]), std::stod(tokens[2])}, std::stod(tokens[0])));
+		else
+			out.data.push_back(DataPoint({std::stof(tokens[1]), std::stof(tokens[2])}, std::stof(tokens[0])));
+		#pragma GCC diagnostic pop
 	}
 
 	file.close();