# Move Mask Operators

Creates a 2-bit mask from the most significant bits of the two, double-precision floating-point values of `A`, as follows:

`int i = move_mask(F64vec2 A)`
`i := sign(a1)<<1 | sign(a0)<<0`
Corresponding intrinsic: _mm_movemask_pd

Creates a 4-bit mask from the most significant bits of the four, single-precision floating-point values of `A`, as follows:

`int i = move_mask(F32vec4 A)`
`i := sign(a3)<<3 | sign(a2)<<2 | sign(a1)<<1 | sign(a0)<<0`
Corresponding intrinsic: _mm_movemask_ps

Parent topic: Floating-point Vector Classes