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Yes, std::from_chars() introduced in C++17 is very fast in GCC. You are correct. The library used GCC is available standalone at |
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More precisely, you can examine the implementation in GCC. |
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So, may I ask, is the simdjson get_double, get_int etc implemented in terms of from_chars then? Or is it a faster simd oriented implementation? |
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They are not semantically equivalent. In simdjson, we parse according to the JSON specification. This is not part of the C++ standard library. |
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std::from_chars() introduced in C++17 as being the fastest conversion function in the west...
Are simdjson get_double(), get_int64() and get_uint64() methods in terms of std::from_chars() or is it using a SIMD based faster implementation?
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