Program Listing for File multiprecToString.cpp

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#include <librapid/librapid.hpp>

#if defined(LIBRAPID_USE_MULTIPREC)

namespace librapid {
    std::string str(const mpz &val, int64_t, int base) { return val.get_str(base); }

    std::string str(const mpf &val, int64_t digits, int base) {
        mp_exp_t exp;
        std::string res = val.get_str(exp, base, digits);
        bool sign       = false;

        if (res[0] == '-') {
            sign = true;
            res  = std::string(res.begin() + 1, res.end());
        }

        if (exp > 0) {
            if (static_cast<size_t>(exp) >= res.length())
                res += std::string(static_cast<size_t>(exp) - res.length() + 1, '0');
            res.insert(exp, ".");
        } else {
            std::string tmp(-exp + 1, '0');
            tmp += res;
            tmp.insert(1, ".");
            res = tmp;
        }

        if (sign) res = "-" + res;
        return res;
    }

    std::string str(const mpq &val, int64_t, int base) { return val.get_str(base); }

    std::string str(const mpfr &val, int64_t digits, int) {
        std::stringstream ss;
        ss << std::fixed;
        mp_prec_t dig2 = val.getPrecision();
        dig2           = ::mpfr::bits2digits(digits < 0 ? dig2 : mp_prec_t(digits));
        ss.precision(dig2);
        ss << val;
        return ss.str();
    }
} // namespace librapid

#endif // LIBRAPID_USE_MULTIPREC