Why does glibc's strlen need to be so complicated to run quickly?

Why does glibc's strlen need to be so complicated to run quickly?

c optimization glibc portability strlen

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Using C++ library in C code

c++ c gcc glibc

c

Why is this code using strlen heavily 6.5x slower with GCC optimizations enabled?

c performance gcc glibc

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Compiling without libc

c gcc glibc demo libc

c

Why is statically linking glibc discouraged?

c++ c linker glibc static-linking

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Does standard c library provides linked list etc. data structures?

c gcc data-structures glibc

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building a .so that is also an executable

c linux shared-libraries glibc dlopen

c

What is GLIBC? What is it used for?

c gnu glibc standard-library

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Check glibc version for a particular gcc compiler

c gcc glibc

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What's the meaning of the %m formatting specifier?

c printf glibc errno format-specifiers

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What is __i686.get_pc_thunk.bx? Why do we need this call?

c assembly shared-libraries glibc

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An alternative for the deprecated __malloc_hook functionality of glibc

c gcc malloc deprecated glibc

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Meaning of double underscore in the beginning

c linux gcc x86-64 glibc

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How to use getaddrinfo_a to do async resolve with glibc

c dns glibc getaddrinfo-a

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Are functions in the C standard library thread safe?

c multithreading thread-safety glibc

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