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## _mm_extracti_si64

# Function _mm_extracti_si64

1.82.0 · Source

    pub fn _mm_extracti_si64(x: __m128i, const LEN: i32, const IDX: i32) -> __m128i

Available on x86-64 and (x86 or x86-64) and target feature `sse4a` only.
Expand description

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`.

`idx` specifies the index of the LSB. `len` specifies the number of bits to extract. If length and index are both zero, bits `[63:0]` of parameter `x` are extracted. It is a compile-time error for `len + idx` to be greater than 64 or for `len` to be zero and `idx` to be non-zero.

Returns a 128-bit integer vector whose lower 64 bits contain the extracted bits.