glibc
libguestfs-common
glibc | libguestfs-common | |
---|---|---|
25 | 2 | |
1,228 | 4 | |
- | - | |
0.0 | 5.8 | |
over 5 years ago | 12 days ago | |
C | OCaml | |
GNU General Public License v3.0 or later | - |
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glibc
- `Strlen` in Glibc
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How does sqrt() work in glibc?
I am writing a short paper for school and the topic is Fast Inverse Square Root and alternatives. One of the questions is how the sqrt-function is implemented in glibc. Here is the code of that function.
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A collection of lock-free data structures written in standard C++11
The code isn't the easiest to read but in glibc it seems that the syscall is only performed if waiter are detected in userspace during an unlock operation
https://github.com/lattera/glibc/blob/master/nptl/pthread_mu...
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Converting my new code (Bytearray2Float64) into 19 Programming Language
You might still not realize, but floats are a large topic. Have a look at eg. this implementation here: https://github.com/lattera/glibc/blob/master/stdlib/strtod_l.c
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Honest question about this "The byte order fallacy" blog post.
This is a nice write up, thank you. However, I'm stilling interpreting this as a "fun trick" rather than the common sense method for solving the problem. For example, looking at the source code for htonl() from glibc: https://github.com/lattera/glibc/blob/master/inet/htonl.c
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Dio deleted the tweet shortly after
Second of all: The horrifying truth is that there is no such thing as a canonical text representation for IPv4 (source) (and yes... I am indeed citing the failed attempt to standardize this as my source for it not being standardized). Authoritatively speaking, all possible (non-binary) representations are equally invalid. In fact, text address resolution is typically delegated to the OS kernel, so what constitutes a "usable" address is liable to vary depending on if you're using Linux, OSX, Windows, or Other.
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Discussion Thread
Optimized code gets really weird. The creators of strlen, for example, decided that iterating over each character to find the end was far too slow. So instead, they convert the character pointer into an int pointer and do bitwise manipulation with the int on two different magic numbers so they can check four/eight characters at once.
- Tengo una duda en algo C/C++
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How does jvm deal with syscalls
If you're using a cross-platform C compiler like gcc or clang, you're usually expected to switch to assembly. Here's the syscall instruction in glibc
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Math Functions with -nostdlib
Maybe you should include the math part of a libc statically with your code. glibc is one option, or dietlibc if you want it to be as small as possible.
libguestfs-common
What are some alternatives?
DirectXMath - DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps
libguestfs - library and tools for accessing and modifying virtual machine disk images. PLEASE DO NOT USE GITHUB FOR ISSUES OR PULL REQUESTS. See the website for how to file a bug or contact us.
fastapprox - Approximate and vectorized versions of common mathematical functions
guestfs-tools - Tools for accessing and modifying guest disk images
openlibm - High quality system independent, portable, open source libm implementation
cppiceberg - The C++ Iceberg
libjxl - JPEG XL image format reference implementation
xemu - Original Xbox Emulator for Windows, macOS, and Linux (Active Development)
nixpkgs - Nix Packages collection & NixOS
UTM - Virtual machines for iOS and macOS
illumos-gate - An open-source Unix operating system
QEMU - Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website.