Fix function range change, also spellcheck and format fix

Author: rlalik

README.md

@@ -49,7 +49,7 @@ In the data file each line corresponds to a single histogram. The line is identi
 
 ## Functions
 Each function is an independent entity, and can be a combinations of various generic functions. Any form of function accepted by `TFormula` is allowed, e.g.: `cos(x)+sin(x)`, `gaus(0)+exp(3)`, `[0]*x+[2]`, etc.
-For all the functions belonging to a single histogram, a sum of functions is created and the sum is fit. For example, to fit a gausian signal and a polynomial background, one could define two functions: `gaus(0) pol3(3)`. From the fitting point of view it does not matter whether you define two partial functions `gaus(0) pol3(3)` or one larger `gaus(0)+pol3(3)`, however HelloFitty offers ways to access each partial function separately, which would not be possible with one grand function.
+For all the functions belonging to a single histogram, a sum of functions is created and the sum is fit. For example, to fit a gaussian signal and a polynomial background, one could define two functions: `gaus(0) pol3(3)`. From the fitting point of view it does not matter whether you define two partial functions `gaus(0) pol3(3)` or one larger `gaus(0)+pol3(3)`, however HelloFitty offers ways to access each partial function separately, which would not be possible with one grand function.
 
 ## Parameters
 After the `|` separator which marks end of function definitions, the parameters definitions start. There should be as many parameters defined as expected by the functions, and more or less parameters will result in throw of `hf::invalid_format`.

inc/details.hpp

@@ -186,8 +186,8 @@ struct fitter_impl
     std::unordered_map<int, draw_opts> partial_functions_styles;
 
     template <class T>
-    auto generic_fit(entry* hfp, entry_impl* hfp_m_d, const char* name, T* dataobj, const char* pars,
-                     const char* gpars) -> bool
+    auto generic_fit(entry* hfp, entry_impl* hfp_m_d, const char* name, T* dataobj, const char* pars, const char* gpars)
+        -> bool
     {
         hfp_m_d->prepare();
 

include/hellofitty.hpp

@@ -309,7 +309,7 @@ class HELLOFITTY_EXPORT fitter final
 
     /// For histograms which have no record in the entries collection, you can set a generic
     /// function and aparameters to be fit. It will not be used for disabled histograms.
-    /// Pass an emtpy object to clear the generic entry.
+    /// Pass an empty object to clear the generic entry.
     /// @param generic a generic histogram function object
     auto set_generic_entry(entry generic) -> void;
     /// Check if the generic entry is set.
@@ -325,8 +325,8 @@ class HELLOFITTY_EXPORT fitter final
     /// @param aux_file the output file for parameters
     /// @param mode source selection mode
     /// @return the file was properly imported
-    auto init_from_file(std::string input_file, std::string aux_file,
-                        priority_mode mode = priority_mode::newer) -> bool;
+    auto init_from_file(std::string input_file, std::string aux_file, priority_mode mode = priority_mode::newer)
+        -> bool;
     /// Force file exporting. If the output file was not set, the function does nothing.
     /// @return true if the file was written
     auto export_to_file(bool update_reference = false) -> bool;
@@ -341,7 +341,7 @@ class HELLOFITTY_EXPORT fitter final
     /// @param hist histogram to be fitted
     /// @param pars histogram fitting pars
     /// @param gpars histogram fit drawing pars
-    /// @return pair of bool (true if fit successfull) and used entry
+    /// @return pair of bool (true if fit successful) and used entry
     auto fit(TH1* hist, const char* pars = "BQ", const char* gpars = "") -> std::pair<bool, entry*>;
     /// Fit the histogram using provided entry. The fit entry is not automatically stored in the collection and must
     /// be add using @see hf::fitter::insert_parameter.
@@ -357,9 +357,9 @@ class HELLOFITTY_EXPORT fitter final
     /// @param graph graph to be fitted
     /// @param pars graph fitting pars
     /// @param gpars graph fit drawing pars
-    /// @return pair of bool (true if fit successfull) and used entry
-    auto fit(const char* name, TGraph* graph, const char* pars = "BQ",
-             const char* gpars = "") -> std::pair<bool, entry*>;
+    /// @return pair of bool (true if fit successful) and used entry
+    auto fit(const char* name, TGraph* graph, const char* pars = "BQ", const char* gpars = "")
+        -> std::pair<bool, entry*>;
     /// Fit the graph using provided entry. The fit entry is not automatically stored in the collection and must
     /// be add using @see hf::fitter::insert_parameter.
     /// @param hfp graph entry to be used

source/entry.cpp

@@ -151,6 +151,10 @@ auto entry::set_fit_range(Double_t range_lower, Double_t range_upper) -> void
 {
     m_d->range_min = range_lower;
     m_d->range_max = range_upper;
+
+    m_d->complete_function_object.SetRange(range_lower, range_upper);
+    for (auto& f : m_d->funcs)
+        f.function_obj.SetRange(range_lower, range_upper);
 }
 
 auto entry::get_fit_range_min() const -> Double_t { return m_d->range_min; }

source/fitter.cpp

@@ -24,7 +24,6 @@
 #include "details.hpp"
 #include "parser.hpp"
 
-#include <TF1.h>
 #include <TGraph.h>
 #include <TH1.h>
 #include <TList.h>

source/hellofitty.cpp

@@ -58,8 +58,8 @@ auto parse_line_entry(const std::string& line, format_version version) -> std::p
     }
 }
 
-auto HELLOFITTY_EXPORT format_line_entry(const std::string& name, const hf::entry* entry,
-                                         format_version version) -> std::string
+auto HELLOFITTY_EXPORT format_line_entry(const std::string& name, const hf::entry* entry, format_version version)
+    -> std::string
 {
     switch (version)
     {