fmt.h

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#ifndef KIDS_FMT_H
#define KIDS_FMT_H
 
#include <iomanip>
#include <iostream>
 
namespace PROJECT_NS {
 
constexpr inline int FMT_WIDTH(int X) { return X + 7; }
#define FMT(X)                                                            \
    " " << std::setiosflags(std::ios::scientific) /*scientific notation*/ \
        << std::setprecision(X)                   /*precision*/           \
        << std::right                             /*alignment*/           \
        << std::setw(FMT_WIDTH(X))                /*width of text*/
 
#define LOC() (std::string(basename(__FILE__)) + ":" + std::to_string(__LINE__))
 
};  // namespace PROJECT_NS
 
#endif  // KIDS_FMT_H