Function core_arch::x86::_mm_insert_si64

pub unsafe fn _mm_insert_si64(x: __m128i, y: __m128i) -> __m128i

This is supported on x86 and target feature sse4a only.

Inserts the [length:0] bits of y into x at index.

The bits of y:

• [69:64] specify the length,
• [77:72] specify the index.

If the length is zero it is interpreted as 64. If index + length > 64 or index > 0 && length == 0 the result is undefined.