popcntintrin.h File Reference

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Macros
#define	__DEFAULT_FN_ATTRS    __attribute__((__always_inline__, __nodebug__, __target__("popcnt")))

Functions
static __inline__ int __DEFAULT_FN_ATTRS	_mm_popcnt_u32 (unsigned int __A)
	Counts the number of bits in the source operand having a value of 1.

Macro Definition Documentation

__DEFAULT_FN_ATTRS

#define __DEFAULT_FN_ATTRS    __attribute__((__always_inline__, __nodebug__, __target__("popcnt")))

Definition at line 19 of file popcntintrin.h.

Function Documentation

_mm_popcnt_u32()

static __inline__ int __DEFAULT_FN_ATTRS _mm_popcnt_u32 ( unsigned int  __A )

static

Counts the number of bits in the source operand having a value of 1.

This intrinsic corresponds to the POPCNT instruction.

Parameters

__A	An unsigned 32-bit integer operand.

Returns

A 32-bit integer containing the number of bits with value 1 in the source operand.

Definition at line 34 of file popcntintrin.h.