base: Use constexpr in Cycles
Review Request #2889 - Created June 16, 2015 and submitted
Changeset 10874:f927a77a299c --------------------------- base: Use constexpr in Cycles Declare the constructor and all of the operators that don't change the state of a Cycles instance as constexpr. This makes it possible to use Cycles as a static constant and allows the compiler to evaulate simple expressions at compile time. An unfortunate side-effect of this is that we cannot use assertions since C++11 doesn't support them in constexpr functions. As a workaround, we throw an invalid_argument exception when the assert would have triggered. A nice side-effect of this is that the compiler will evaluate the "assertion" at compile time when an expression involving Cycles can be statically evaluated.