10.107 __clz intrinsic

This intrinsic inserts a CLZ instruction or an equivalent code sequence into the instruction stream generated by the compiler. It enables you to count the number of leading zeros of a data value in your C or C++ code.


unsigned char __clz(unsigned int val)



is an unsignedint.

Return value

The __clz intrinsic returns the number of leading zeros in val.

Related reference
10.154 GNU built-in functions
Related information
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