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Builtin GCC Functions - __builtin_clz(); __builtin_ctz(); __builtin_popcount();

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GCC provides quite a lot of builtin functions. These functions are part of standard C offered by the compiler and may come in various variants as per the gcc. These are also termed as hardware specific functions which are internally implemented in assembly or we can say machine instructions, with wide usage in low level programming and are generally target optimized.

These functions are prefixed with “__builtin”. There are a huge lot of builtin functions by GCC, however here in this...

Builtin GCC Functions - __builtin_clz(); __builtin_ctz(); __builtin_popcount();

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