# Data Alignment

Memory operations using the Intel® Streaming SIMD Extensions should be performed on 16-byte-aligned data whenever possible. Memory operations using the Intel® Advanced Vector Extensions should be performed on 32-byte-aligned data whenever possible.

F32vec4 and F64vec2 object variables are properly aligned by default. Note that floating point arrays are not automatically aligned. To get 16-byte alignment, you can use the alignment __declspec:

`__declspec( align(16) ) float A[4];`

Parent topic: Floating-point Vector Classes