popcount.h File Reference

#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <immintrin.h>

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Typedefs
typedef uint32_t	u32

Functions
u32	popcount0 (u32 n)
u32	popcount1 (u32 n)
u32	popcount2 (u32 n)
u32	popcount3 (u32 n)
	__asm__ ("popcount3: popcnt %eax, %edi\n" "ret\n")
u32	popcount4 (u32 n)
u32	popcount5 (u32 n)
u32	popcount6 (u32 n)
u32	popcount7 (u32 n)
u32	popcount8 (u32 n)
	__asm__ ("popcount8:\n" " xor rax, rax\n" ".L0:\n" " shr %edi, 1\n" " jz .L1\n" " adc %eax, 0\n" " jmp .L0\n" ".L1:\n" " adc %eax, 0\n" " ret\n")
u32	popcount9 (u32 n)
u32	popcount10 (u32 n)

Variables
static u32	U32_BIT = sizeof(u32) * CHAR_BIT

Typedef Documentation

u32

typedef uint32_t u32

Function Documentation

__asm__() [1/2]

__asm__	(	"popcount3: popcnt %	eax,
		%edi\n" "ret\n"	)

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__asm__() [2/2]

__asm__	(	"popcount8:\n" " xor	rax,
		rax\n" ".L0:\n" " shr %	edi,
		1\n" " jz .L1\n" " adc %	eax,
		0\n" " jmp .L0\n" ".L1:\n" " adc %	eax,
		0\n" " ret\n"	)

popcount0()

u32 popcount0

(

u32

n

)

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popcount1()

u32 popcount1

(

u32

n

)

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popcount10()

u32 popcount10

(

u32

n

)

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popcount2()

u32 popcount2

(

u32

n

)

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popcount3()

u32 popcount3

(

u32

n

)

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popcount4()

u32 popcount4

(

u32

n

)

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popcount5()

u32 popcount5

(

u32

n

)

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popcount6()

u32 popcount6

(

u32

n

)

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popcount7()

u32 popcount7

(

u32

n

)

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popcount8()

u32 popcount8

(

u32

n

)

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popcount9()

u32 popcount9

(

u32

n

)

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Variable Documentation

U32_BIT

u32 U32_BIT = sizeof(u32) * CHAR_BIT

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