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  2. Factorial - Wikipedia

    en.wikipedia.org/wiki/Factorial

    In mathematics, the factorial of a non-negative integer, denoted by ! , is the product of ... [74] and the Boost C++ library. [75] If efficiency is not a concern, ...

  3. List of game engines - Wikipedia

    en.wikipedia.org/wiki/List_of_game_engines

    Improvements to the id Tech 3 engine. id Tech 4 Doom 3 engine: C++: 2011 C++ via DLLs: Yes 3D Windows, Linux, macOS: Doom 3, Quake 4, Prey, Enemy Territory: Quake Wars, Wolfenstein, Brink: GPL-3.0-or-later: Also termed the Doom 3 engine; features advanced: lighting, shadows, interactive GUI surfaces. id Tech 4.5: C++: 2011 C++ via DLLs: Yes 3D ...

  4. List of commercial video games with available source code

    en.wikipedia.org/wiki/List_of_commercial_video...

    Between 2019 and 2021 K1n9_Duk3 recreated the source code of Commander Keen 4, 5 and 6, based on the already released source code of Catacomb 3-D, Wolfenstein 3-D and Keen Dreams. When compiled with the Borland C++ v3.0 compiler, compressing the newly created executables with LZEXE 100% identical copies of the original v1.4 executables are ...

  5. Factorial code - Wikipedia

    en.wikipedia.org/wiki/Factorial_code

    To create factorial codes, Horace Barlow and co-workers suggested to minimize the sum of the bit entropies of the code components of binary codes (1989). Jürgen Schmidhuber (1992) re-formulated the problem in terms of predictors and binary feature detectors , each receiving the raw data as an input.

  6. Stirling's approximation - Wikipedia

    en.wikipedia.org/wiki/Stirling's_approximation

    [1] [2] [3] One way of stating the approximation involves the logarithm of the factorial: ⁡ (!) = ⁡ + (⁡), where the big O notation means that, for all sufficiently large values of , the difference between ⁡ (!

  7. Fast inverse square root - Wikipedia

    en.wikipedia.org/wiki/Fast_inverse_square_root

    Lighting and reflection calculations, as in the video game OpenArena, use the fast inverse square root code to compute angles of incidence and reflection.. Fast inverse square root, sometimes referred to as Fast InvSqrt() or by the hexadecimal constant 0x5F3759DF, is an algorithm that estimates , the reciprocal (or multiplicative inverse) of the square root of a 32-bit floating-point number in ...

  8. Computational complexity of mathematical operations - Wikipedia

    en.wikipedia.org/wiki/Computational_complexity...

    April 2015) (Learn how and when to remove this message) Graphs of functions commonly used in the analysis of algorithms, showing the number of operations N {\displaystyle N} versus input size n {\displaystyle n} for each function

  9. List of C-family programming languages - Wikipedia

    en.wikipedia.org/wiki/List_of_C-family...

    Not eXactly C (NXC) 2006: John Hansen: A high-level language for the Lego Mindstorms NXT. NXC, which is short for Not eXactly C, is based on Next Byte Codes, an assembly language. NXC has a syntax like C. It is part of the BricX IDE that integrates editor, tools for interfacing with the brick, and the compiler, but supports more languages. [18]