Each SIMD vector type is named
scalar-count, where
scalar is a scalar C type and
count is a vector dimension.
The following 128-bit vector types are defined in the
math.vectors.simd vocabulary:
char-16
uchar-16
short-8
ushort-8
int-4
uint-4
longlong-2
ulonglong-2
float-4
double-2
Double-width 256-bit vector types are defined in the
math.vectors.simd.cords vocabulary:
char-32
uchar-32
short-16
ushort-16
int-8
uint-8
longlong-4
ulonglong-4
float-8
double-4