mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-18 11:10:05 +00:00
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
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// Copyright (c) 2024 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/to_string.h"
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#include <cassert>
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namespace spvtools {
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std::string to_string(uint32_t n) {
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// This implementation avoids using standard library features that access
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// the locale. Using the locale requires taking a mutex which causes
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// annoying serialization.
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constexpr int max_digits = 10; // max uint has 10 digits
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// Contains the resulting digits, with least significant digit in the last
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// entry.
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char buf[max_digits];
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int write_index = max_digits - 1;
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if (n == 0) {
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buf[write_index] = '0';
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} else {
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while (n > 0) {
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int units = n % 10;
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buf[write_index--] = "0123456789"[units];
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n = (n - units) / 10;
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}
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write_index++;
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}
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assert(write_index >= 0);
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return std::string(buf + write_index, max_digits - write_index);
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}
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} // namespace spvtools
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