Function core::arch::x86::_mm_extract_si64

1.27.0 · source ·
pub unsafe fn _mm_extract_si64(x: __m128i, y: __m128i) -> __m128i
Available on (x86 or x86-64) and target feature sse4a and x86 only.
Expand description

Extracts the bit range specified by y from the lower 64 bits of x.

The [13:8] bits of y specify the index of the bit-range to extract. The [5:0] bits of y specify the length of the bit-range to extract. All other bits are ignored.

If the length is zero, it is interpreted as 64. If the length and index are zero, the lower 64 bits of x are extracted.

If length == 0 && index > 0 or length + index > 64 the result is undefined.

This documentation is an old archive. Please see https://rust.docs.kernel.org instead.