Don't process empty files

1 files changed, 2 insertions, 0 deletions

diff --git a/get_energy.cpp b/get_energy.cpp
index 857c1c4..6164a6d 100644
--- a/get_energy.cpp
+++ b/get_energy.cpp
@@ -135,6 +135,7 @@ int main(int argc, char* argv[]) {
 
     std::string file_end = std::to_string(p) + "_" + std::to_string(s) + "_" + std::to_string(λ) + "_" + std::to_string(τ₀) + "_" + std::to_string(y) + "_" + std::to_string(log2n) + "_" + std::to_string(τₘₐₓ) + ".dat";
     std::ifstream cfile("C_"+file_end, std::ios::binary);
+    if (cfile.is_open()) {
     cfile.read((char*)(C.data()), C.size() * sizeof(Real));
     cfile.close();
     std::ifstream rfile("R_"+file_end, std::ios::binary);
@@ -150,6 +151,7 @@ int main(int argc, char* argv[]) {
     std::vector<Complex> Ct = fft.fourier(C);
 
     std::cout << y << " " << energy << " " << Ct[0].real() << std::endl;
+    }
   }
 
   return 0;