4.7.10. __clz

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.

Syntax

unsigned char __clz(unsigned int val)

Where:

val

is an unsigned int.

Return value

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

See also

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