ammintrin.h File Reference

#include <pmmintrin.h>

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Macros
#define	__DEFAULT_FN_ATTRS   __attribute__((__always_inline__, __nodebug__, __target__("sse4a")))
#define	_mm_extracti_si64(x, len, idx)
	Extracts the specified bits from the lower 64 bits of the 128-bit integer vector operand at the index idx and of the length len. More...
#define	_mm_inserti_si64(x, y, len, idx)
	Inserts bits of a specified length from the source integer vector y into the lower 64 bits of the destination integer vector x at the index idx and of the length len. More...

Macro Definition Documentation

#define __DEFAULT_FN_ATTRS   __attribute__((__always_inline__, __nodebug__, __target__("sse4a")))

#define _mm_extracti_si64	(		x,
			len,
			idx
	)

Value:

((__m128i)__builtin_ia32_extrqi((__v2di)(__m128i)(x), \
                                  (char)(len), (char)(idx)))

Extracts the specified bits from the lower 64 bits of the 128-bit integer vector operand at the index idx and of the length len.

__m128i _mm_extracti_si64(__m128i x, const int len, const int idx);

This intrinsic corresponds to the \c EXTRQ instruction.

Parameters

x	The value from which bits are extracted.
len	Bits [5:0] specify the length; the other bits are ignored. If bits [5:0] are zero, the length is interpreted as 64.
idx	Bits [5:0] specify the index of the least significant bit; the other bits are ignored. If the sum of the index and length is greater than 64, the result is undefined. If the length and index are both zero, bits [63:0] of parameter x are extracted. If the length is zero but the index is non-zero, the result is undefined.

Returns

A 128-bit integer vector whose lower 64 bits contain the bits extracted from the source operand.

#define _mm_inserti_si64	(		x,
			y,
			len,
			idx
	)

Value:

((__m128i)__builtin_ia32_insertqi((__v2di)(__m128i)(x), \
                                    (__v2di)(__m128i)(y), \
                                    (char)(len), (char)(idx)))

Inserts bits of a specified length from the source integer vector y into the lower 64 bits of the destination integer vector x at the index idx and of the length len.

__m128i _mm_inserti_si64(__m128i x, __m128i y, const int len,
const int idx);

This intrinsic corresponds to the \c INSERTQ instruction.

Parameters

x	The destination operand where bits will be inserted. The inserted bits are defined by the length len and by the index idx specifying the least significant bit.
y	The source operand containing the bits to be extracted. The extracted bits are the least significant bits of operand y of length len.
len	Bits [5:0] specify the length; the other bits are ignored. If bits [5:0] are zero, the length is interpreted as 64.
idx	Bits [5:0] specify the index of the least significant bit; the other bits are ignored. If the sum of the index and length is greater than 64, the result is undefined. If the length and index are both zero, bits [63:0] of parameter y are inserted into parameter x. If the length is zero but the index is non-zero, the result is undefined.

Returns

A 128-bit integer vector containing the original lower 64-bits of destination operand x with the specified bitfields replaced by the lower bits of source operand y. The upper 64 bits of the return value are undefined.