Revert "extended pow method to take negative exponents"
Revert "extended pow method to take negative exponents"

This reverts commit 473327f146943c1d5d2954fec39f764e6ebafa65.

lambday/shogun,Saurabh7/shogun,lisitsyn/shogun,shogun-toolbox/shogun,besser82/shogun,Saurabh7/shogun,karlnapf/shogun,shogun-toolbox/shogun,sorig/shogun,lambday/shogun,Saurabh7/shogun,geektoni/shogun,karlnapf/shogun,besser82/shogun,lisitsyn/shogun,karlnapf/shogun,Saurabh7/shogun,sorig/shogun,geektoni/shogun,besser82/shogun,lambday/shogun,geektoni/shogun,shogun-toolbox/shogun,lambday/shogun,lambday/shogun,Saurabh7/shogun,lisitsyn/shogun,geektoni/shogun,karlnapf/shogun,sorig/shogun,Saurabh7/shogun,besser82/shogun,Saurabh7/shogun,geektoni/shogun,lisitsyn/shogun,sorig/shogun,sorig/shogun,besser82/shogun,shogun-toolbox/shogun,Saurabh7/shogun,geektoni/shogun,lisitsyn/shogun,shogun-toolbox/shogun,besser82/shogun,lisitsyn/shogun,Saurabh7/shogun,karlnapf/shogun,shogun-toolbox/shogun,lambday/shogun,sorig/shogun,karlnapf/shogun