float : added software float multiplication

float : added software float multiplication

    multiplication algorithm and base structures have been added

Signed-off-by: Oscar Suro <outercript@gmail.com>
updated gitignore, will not list gcno, gcda, info, exe

updated gitignore, will not list gcno, gcda, info, exe

    removed coverage data files, and executables

Signed-off-by: Oscar Suro <outercript@gmail.com>