cpp/named req/TrivialClock

The requirements describe the requirements satisfied by several clocks in the chrono library.

Requirements
For a type :


 * The type must meet requirements.
 * The types, , and satisfy the requirements of , , , , , , and.
 * lvalues of the types, , and are.
 * The function does not throw exceptions.
 * The type meets the  requirements, recursively.

Usage
The following types in the standard library satisfy these requirements:
 * std
 * std
 * std