Field of Arbitrary Precision Real Number Intervals

sage.rings.real_interval_field.is_RealIntervalField(x)

Check if x is a RealIntervalField_class.

EXAMPLES:

sage: from sage.rings.real_interval_field import is_RealIntervalField as is_RIF
sage: is_RIF(RIF)
True
sage.rings.real_interval_field.is_RealIntervalFieldElement(x)

Check if x is a RealIntervalFieldElement.

EXAMPLES:

sage: from sage.rings.real_interval_field import is_RealIntervalFieldElement as is_RIFE
sage: is_RIFE(RIF(2.5))
True

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