Ruby mathematic gem

Question

does anybody know if there is a good gem for mathematic / geometric operations? I need some of this things:

• Dot product
• Cross product
• Angle betwe

Answer 1

http://linalg.rubyforge.org/ seems to do what you want. It is based on LAPACK, the standard ultra tested 40-year linear algebra framework. Moreover, you can plug in vendor-specific LAPACK libraries for optimized code.