revise function names

eigenutils.h

@@ -1,6 +1,8 @@
 #ifndef __EIGENUTILS_H__
 #define __EIGENUTILS_H__
 
+#include <cstdlib>
+#include <iostream>
 #include <fstream>
 #include <string>
 
@@ -22,6 +24,10 @@ void write(const std::string &filename, const Matrix &matrix) {
 template <class Matrix>
 void read(const std::string &filename, Matrix &matrix) {
   std::ifstream in(filename, std::ios::in | std::ios::binary);
+  if (!in) {
+    std::cout << "Cannot open file " << filename << std::endl;
+    std::exit(-1);
+  }
   typename Matrix::Index rows = 0, cols = 0;
   in.read((char *)(&rows), sizeof(typename Matrix::Index));
   in.read((char *)(&cols), sizeof(typename Matrix::Index));
@@ -32,14 +38,14 @@ void read(const std::string &filename, Matrix &matrix) {
 }
 
 template <class Tensor>
-void write_tensor(const std::string &filename, const Tensor &tensor) {
+void write_tensor(const std::string &filename,
+                  const Tensor &tensor) {
   std::ofstream out(filename, std::ios::out | std::ios::binary |
                                   std::ios::trunc);
   typename Tensor::Index rank = tensor.rank();
   out.write((char *)(&rank), sizeof(typename Tensor::Index));
-  out.write(
-      (char *)tensor.dimensions().data(),
-      rank * sizeof(typename Tensor::Index));
+  out.write((char *)tensor.dimensions().data(),
+            rank * sizeof(typename Tensor::Index));
   out.write((char *)tensor.data(),
             tensor.size() * sizeof(typename Tensor::Scalar));
   out.close();
@@ -48,6 +54,10 @@ void write_tensor(const std::string &filename, const Tensor &tensor) {
 template <class Tensor>
 void read_tensor(const std::string &filename, Tensor &tensor) {
   std::ifstream in(filename, std::ios::in | std::ios::binary);
+  if (!in) {
+    std::cout << "Cannot open file " << filename << std::endl;
+    std::exit(-1);
+  }
   typename Tensor::Index rank;
   in.read((char *)(&rank), sizeof(typename Tensor::Index));
   typename Tensor::Dimensions dimensions;

stringutils.cpp

@@ -1,7 +1,7 @@
 #include "stringutils.h"
 
 namespace strutils {
-void split_filename(const std::string &fullname,
+void splitFilename(const std::string &fullname,
                     std::string &base,
                     std::string &filename_wo_ext,
                     std::string &ext) {
@@ -28,7 +28,7 @@ void split_filename(const std::string &fullname,
  * ../syn/events2_U100_I10_T100.dat -->
  * ../syn/events2_U100_I10_T100_test.dat
  */
-std::string insert_middle(const std::string &filename,
+std::string insertMiddle(const std::string &filename,
                           const std::string &sufix) {
   auto idx = filename.rfind('.');
   if (idx != std::string::npos) {
@@ -39,7 +39,7 @@ std::string insert_middle(const std::string &filename,
     return filename + "_" + sufix;
 }
 
-std::string get_base_path(const std::string &fullname) {
+std::string getBasePath(const std::string &fullname) {
   auto idx = fullname.rfind('/');
   if (idx != std::string::npos) {
     return fullname.substr(0, idx + 1);
@@ -48,7 +48,7 @@ std::string get_base_path(const std::string &fullname) {
   }
 }
 
-std::string pretty_number(const int num) {
+std::string prettyNumber(const int num) {
   if (num < 1e3)
     return fmt::format("{}", num);
   else if (num < 1e6)
@@ -59,7 +59,7 @@ std::string pretty_number(const int num) {
     return fmt::format("{}G", num / 1000000000);
 }
 
-std::string pretty_size(const int size) {
+std::string prettySize(const int size) {
   if (size < Kilobytes)
     return fmt::format("{}B", size);
   else if (size < Megabytes)
@@ -70,7 +70,7 @@ std::string pretty_size(const int size) {
     return fmt::format("{:.2f}G", size / Gigabytes);
 }
 
-std::string pretty_time(const double secs) {
+std::string prettyTime(const double secs) {
   if (secs < 60)
     return fmt::format("{:.2f}s", secs);
   else {

stringutils.h

@@ -9,7 +9,7 @@
 
 namespace strutils {
 
-void split_filename(const std::string &fullname,
+void splitFilename(const std::string &fullname,
                     std::string &base,
                     std::string &filename_wo_ext,
                     std::string &ext);
@@ -18,18 +18,18 @@ void split_filename(const std::string &fullname,
  * ../syn/events2_U100_I10_T100.dat -->
  * ../syn/events2_U100_I10_T100_test.dat
  */
-std::string insert_middle(const std::string &filename,
+std::string insertMiddle(const std::string &filename,
                           const std::string &sufix);
 
-std::string get_base_path(const std::string &fullname);
+std::string getBasePath(const std::string &fullname);
 
-std::string pretty_number(const int num);
+std::string prettyNumber(const int num);
 
 static const double Kilobytes = 1 << 10, Megabytes = 1 << 20,
                     Gigabytes = 1 << 30;
-std::string pretty_size(const int size);
+std::string prettySize(const int size);
 
-std::string pretty_time(const double seconds);
+std::string prettyTime(const double seconds);
 
 void split(const std::string &s, char delim,
            std::vector<std::string> &elems);

timer.h

@@ -24,7 +24,7 @@ class Timer {
   double seconds() const { return milliseconds() / 1000; }
 
   const std::string getStr() const {
-    return strutils::pretty_time(seconds());
+    return strutils::prettyTime(seconds());
   }
 
   static char* curTime() {