/** @file utils.hpp
 *
 *  @author Cory Alexander Balaton (coryab)
 *  @author Janita Ovidie Sandtrøen Willumsen (janitaws)
 *
 *  @version 1.0
 *
 *  @brief Function prototypes and macros that are useful.
 *
 *  These utility function are mainly for convenience and aren't directly
 *  related to the project.
 *
 *  @bug No known bugs
 * */
#ifndef __UTILS__
#define __UTILS__

#include <string>
#include <vector>
#include <iomanip>
#include <sstream>

/** @def DEBUG(msg)
 *  @brief Writes a debug message
 *
 *  This function writes a debug message that includes the filename,
 *  line number, and a custom message. The function is wrapped in an ifdef
 *  that checks if DBG is defined, so one can choose to display the debug 
 *  messages by adding the -DDBG flag when compiling.
 * */
#ifdef DBG
    #define DEBUG(msg) std::cout << __FILE__ << " " << __LINE__ << ": " \
        << msg << std::endl
#else
    #define DEBUG(msg)
#endif

#define ASSERT(expr) m_assert(expr, #expr, __FUNCTION__, __FILE__, __LINE__)

/** Code stolen from https://github.com/anderkve/FYS3150
 *  Header: https://github.com/anderkve/FYS3150/blob/master/code_examples/compilation_linking/example_1/include/utils.hpp
 *  Source: https://github.com/anderkve/FYS3150/blob/master/code_examples/compilation_linking/example_1/src/utils.cpp
 * */

/** @brief Turns a double into a string written in scientific format.
 *
 *  @param d The number to stringify
 *  @param width The reserved width of the string
 *  @param prec The precision of the stringified number
 *
 *  @return String
 * */
std::string scientific_format(double d, int width=20, int prec=10);

/** @brief Turns a vector of doubles into a string written in scientific format.
 *
 *  @param v The vector to stringify
 *  @param width The reserved width of the string
 *  @param prec The precision of the stringified number
 *
 *  @return String
 * */
std::string scientific_format(const std::vector<double>& v, 
                              int width=20, 
                              int prec=10);

void m_assert(bool expr, const char* expr_str, const char* func, const char* file, int line);

#endif