This section specifies the environment classes in more detail. The abstract base class TFPEnvironment establishes the common protocol needed to:
- Get and set the rounding direction
- Get, set, test, and clear the exception flags
- Reset the environment to the IEEE standard defaults (rounding to nearest with all flags clear)
- Copy environments and compare them for equality
- Stream environments
Four concrete derived classes provide features for different applications. You instantiate but do not derive from these classes.
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