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Copy pathwide_integer_to_string.cpp
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73 lines (59 loc) · 2.78 KB
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
// This file is copied from
// https://github.com/ClickHouse/ClickHouse/blob/master/base/base/wide_integer_to_string.cpp
// and modified by Doris
#include "core/wide_integer_to_string.h"
#include <fmt/format.h>
#include <string>
#include "core/wide_integer.h"
namespace wide {
template <size_t Bits, typename Signed>
inline std::string to_string(const integer<Bits, Signed>& n) {
std::string res;
if (integer<Bits, Signed>::_impl::operator_eq(n, 0U)) return "0";
integer<Bits, unsigned> t;
bool is_neg = integer<Bits, Signed>::_impl::is_negative(n);
if (is_neg)
t = integer<Bits, Signed>::_impl::operator_unary_minus(n);
else
t = n;
while (!integer<Bits, unsigned>::_impl::operator_eq(t, 0U)) {
res.insert(res.begin(),
'0' + char(integer<Bits, unsigned>::_impl::operator_percent(t, 10U)));
t = integer<Bits, unsigned>::_impl::operator_slash(t, 10U);
}
if (is_neg) res.insert(res.begin(), '-');
return res;
}
template std::string to_string(const integer<128, signed>& n);
template std::string to_string(const integer<128, unsigned>& n);
template std::string to_string(const integer<256, signed>& n);
template std::string to_string(const integer<256, unsigned>& n);
} // namespace wide
template <size_t Bits, typename Signed>
std::ostream& operator<<(std::ostream& out, const wide::integer<Bits, Signed>& value) {
return out << to_string(value);
}
std::ostream& operator<<(std::ostream& out, const wide::integer<128, signed>& value);
std::ostream& operator<<(std::ostream& out, const wide::integer<128, unsigned>& value);
std::ostream& operator<<(std::ostream& out, const wide::integer<256, signed>& value);
std::ostream& operator<<(std::ostream& out, const wide::integer<256, unsigned>& value);
template struct fmt::formatter<wide::integer<128, signed>>;
template struct fmt::formatter<wide::integer<128, unsigned>>;
template struct fmt::formatter<wide::integer<256, signed>>;
template struct fmt::formatter<wide::integer<256, unsigned>>;