ENH: add sources for matrix multiplication

README.md

src/app/compare.cpp

src/app/generate.cpp

src/app/multiply.cpp

src/app/print.cpp

src/matrix.cpp

src/matrix.h

tests/large/A.bin

tests/large/B.bin

tests/large/C.bin

tests/primes/A.bin

tests/primes/B.bin

tests/primes/C.bin

tests/small/A.bin

tests/small/B.bin

tests/small/C.bin

tests/tiny/A.bin

tests/tiny/B.bin

tests/tiny/C.bin