forked from OSchip/llvm-project
35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
//===-- String utils for matchers -------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_UTILS_UNITTEST_SIMPLE_STRING_CONV_H
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#define LLVM_LIBC_UTILS_UNITTEST_SIMPLE_STRING_CONV_H
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#include "src/__support/CPP/TypeTraits.h"
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#include <string>
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namespace __llvm_libc {
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// Return the first N hex digits of an integer as a string in upper case.
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template <typename T>
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cpp::EnableIfType<cpp::IsIntegral<T>::Value, std::string>
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int_to_hex(T X, size_t Length = sizeof(T) * 2) {
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std::string s(Length, '0');
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for (auto it = s.rbegin(), end = s.rend(); it != end; ++it, X >>= 4) {
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unsigned char Mod = static_cast<unsigned char>(X) & 15;
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*it = (Mod < 10 ? '0' + Mod : 'a' + Mod - 10);
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}
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return s;
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}
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} // namespace __llvm_libc
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#endif // LLVM_LIBC_UTILS_UNITTEST_SIMPLE_STRING_CONV_H
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