ToString.h

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#ifndef _LIMBO_STRING_TOSTRING
#define _LIMBO_STRING_TOSTRING
 
#include <string>
#include <cstdio>
#include <limits>

namespace limbo 
{
 
using std::string;

inline string to_string(int val)
{
    char a[sizeof(int)<<2]; 
    sprintf(a, "%d", val);
    return string(a);
}

inline string to_string(long val)
{
    char a[sizeof(long)<<2]; 
    sprintf(a, "%ld", val);
    return string(a);
}

inline string to_string(long long val)
{
    char a[sizeof(long long)<<2]; 
    sprintf(a, "%lld", val);
    return string(a);
}

inline string to_string(unsigned int val)
{
    char a[sizeof(unsigned int)<<2]; 
    sprintf(a, "%u", val);
    return string(a);
}

inline string to_string(unsigned long val)
{
    char a[sizeof(unsigned long)<<2]; 
    sprintf(a, "%lu", val);
    return string(a);
}

inline string to_string(unsigned long long val)
{
    char a[sizeof(unsigned long long)<<2]; 
    sprintf(a, "%llu", val);
    return string(a);
}

inline string to_string(float val)
{
    if (val != val) return string("nan");
    char a[std::numeric_limits<float>::max_exponent10+20]; 
    sprintf(a, "%g", val);
    return string(a);
}

inline string to_string(double val)
{
    if (val != val) return string("nan");
    char a[std::numeric_limits<double>::max_exponent10+20]; 
    sprintf(a, "%g", val);
    return string(a);
}

inline string to_string(long double val)
{
    if (val != val) return string("nan");
    char a[std::numeric_limits<long double>::max_exponent10+20]; 
    sprintf(a, "%Lf", val);
    return string(a);
}
 
} // namespace limbo 
 
#endif