Here is a simple example of vector operations that leverages x86 SIMD (single instruction, multiple data) instructions to add numbers to the
vector 1,000,000 times.  (4,000,000 calculations).  The vector version is ~3x faster than the C array version.


TO DO:
Investigate vector datatypes and optimal use in more depth

Disclaimer:
All correctness is disclaimed

References:
https://ds9a.nl/gcc-simd/example.html  (OLD: out of date syntax does not compile)
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/Vector-Extensions.html
https://gcc.gnu.org/onlinedocs/gcc/Vector-Extensions.html
https://www.linuxjournal.com/content/introduction-gcc-compiler-intrinsics-vector-processing