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Evaluating Math Expressions at Compile-Time with C++20 constexpr and consteval [Part 2]

FiberRunner
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4y ago · Mar 7, 2022 8:26 PM
#1
C++20 consteval guarantees that a function executes strictly at compile time, turning mathematical algorithms (sine lookup tables, matrix inverses, hash tables) into static constants.
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BytecodeDev
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4y ago · Mar 7, 2022 10:13 PM
#2
If a consteval function cannot be evaluated at compile time, the compiler raises a hard error rather than silently falling back to runtime.
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PointerGuru
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4y ago · Mar 9, 2022 3:13 AM
#3
We generate our entire trigonometric sine/cosine lookup tables at compile time into the binary read-only section (.rdata).
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