mirror of
https://github.com/nlohmann/json.git
synced 2026-10-06 14:40:32 +00:00
Niels Lohmann
44fba02ec2
- zmij::to_shortest() keeps the last digit apart from the 15 or 16 digits before it, and dtoa_impl::write_shortest() converts those at once: with SSE2 on x86-64 and NEON on 64-bit Arm (no CPU check needed), else eight digits at a time. The decimal point is inserted in the register; reading the digits back right after storing them stalled store forwarding. - json::dump() writes floats and integers straight into its write buffer instead of copying them from number_buffer, and integers below 10^16 eight digits at a time. - json_view's dump() writes doubles from their bits and tokens of up to 15 digits through the same code; its own NEON writer is removed. to_chars() on canada.json: 35 -> 29 ns per double (x86-64), 18.8 -> 14.2 ns (Apple M1); json::dump() of canada.json 16-29% faster, of citm_catalog.json 14-19%. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++
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// | | |__ | | | | | | version 3.12.0
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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#pragma once
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// clean up
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#undef JSON_ASSERT
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#undef JSON_INTERNAL_CATCH
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#undef JSON_THROW
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#undef JSON_PRIVATE_UNLESS_TESTED
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#undef NLOHMANN_BASIC_JSON_TPL_DECLARATION
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#undef NLOHMANN_BASIC_JSON_TPL
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#undef JSON_EXPLICIT
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#undef NLOHMANN_CAN_CALL_STD_FUNC_IMPL
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#undef JSON_INLINE_VARIABLE
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#undef JSON_NO_UNIQUE_ADDRESS
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#undef JSON_DISABLE_ENUM_SERIALIZATION
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#undef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
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#undef JSON_DTOA_SSE2
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#undef JSON_DTOA_NEON
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#ifndef JSON_TEST_KEEP_MACROS
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#undef JSON_CATCH
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#undef JSON_TRY
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#undef JSON_HAS_CPP_11
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#undef JSON_HAS_CPP_14
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#undef JSON_HAS_CPP_17
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#undef JSON_HAS_CPP_20
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#undef JSON_HAS_CPP_23
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#undef JSON_HAS_CPP_26
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#undef JSON_HAS_FILESYSTEM
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#undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
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#undef JSON_HAS_THREE_WAY_COMPARISON
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#undef JSON_HAS_RANGES
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#undef JSON_HAS_RANGE_VIEW_CONVERSION
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#undef JSON_HAS_STD_FORMAT
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#undef JSON_HAS_STATIC_RTTI
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#undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
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#undef JSON_BRACE_INIT_COPY_SEMANTICS
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#undef JSON_PRECISE_STREAM_POSITION
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#undef JSON_STRICT_NUL_HANDLING
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#undef JSON_STRICT_BINARY_UTF8
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#endif
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#include <nlohmann/thirdparty/hedley/hedley_undef.hpp>
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