math.ratios: adding some tests for M\ ratio /mod.
math.ratios: adding some tests for M\ ratio /mod.

sarvex/factor-lang,AlexIljin/factor,dch/factor,sarvex/factor-lang,slavapestov/factor,mrjbq7/factor,tgunr/factor,tgunr/factor,nicolas-p/factor,bjourne/factor,bpollack/factor,factor/factor,bpollack/factor,tgunr/factor,AlexIljin/factor,bpollack/factor,bpollack/factor,sarvex/factor-lang,dch/factor,factor/factor,AlexIljin/factor,slavapestov/factor,factor/factor,AlexIljin/factor,nicolas-p/factor,mrjbq7/factor,dch/factor,dch/factor,dch/factor,bjourne/factor,AlexIljin/factor,slavapestov/factor,bjourne/factor,AlexIljin/factor,mrjbq7/factor,bjourne/factor,bjourne/factor,bpollack/factor,tgunr/factor,factor/factor,slavapestov/factor,slavapestov/factor,bpollack/factor,nicolas-p/factor,sarvex/factor-lang,bjourne/factor,nicolas-p/factor,bjourne/factor,sarvex/factor-lang,sarvex/factor-lang,bpollack/factor,nicolas-p/factor,nicolas-p/factor,dch/factor,factor/factor,tgunr/factor,mrjbq7/factor,nicolas-p/factor,slavapestov/factor,tgunr/factor,sarvex/factor-lang,AlexIljin/factor,mrjbq7/factor,factor/factor,mrjbq7/factor,slavapestov/factor