The Ivec classes provide an interface to SIMD processing using integer vectors of various sizes. The class hierarchy is represented in the following figure.
| Ivec Class Hierarchy |
|---|
The M64 and M128 classes define the __m64 and __m128i data types from which the rest of the Ivec classes are derived. The first generation of child classes are derived based solely on bit sizes of 128, 64, 32, 16, and 8 respectively for the I128vec1, I64vec1, 164vec2, I32vec2, I32vec4, I16vec4, I16vec8, I8vec16, and I8vec8 classes. The latter seven of the these classes require specification of signedness and saturation.
Caution
Do not intermix the M64 and M128 data types. You will get unexpected behavior if you do.
The signedness is indicated by the s and u in the class names:
Is64vec2
Iu64vec2
Is32vec4
Iu32vec4
Is16vec8
Iu16vec8
Is8vec16
Iu8vec16
Is32vec2
Iu32vec2
Is16vec4
Iu16vec4
Is8vec8
Iu8vec8