enum FloatingPointClassification The IEEE 754 floating-point classes. Import import Swift Cases case signalingNaN A signaling NaN ("not a number"). A signaling NaN sets the floating-point exception status when used in many floating-point operations. Declaration case quietNaN A silent NaN ("not a number") value. Declaration case negativeInfinity A value equal to -infinity. Declaration case negativeNormal A negative value that uses the full precision of the floating-point type. See Also: FloatingPoint.isNormal Declaration case negativeSubnormal A negative, nonzero number that does not use the full precision of the floating-point type. See Also: FloatingPoint.isSubnormal Declaration case negativeZero A value equal to zero with a negative sign. Declaration case positiveZero A value equal to zero with a positive sign. Declaration case positiveSubnormal A positive, nonzero number that does not use the full precision of the floating-point type. See Also: FloatingPoint.isSubnormal Declaration case positiveNormal A positive value that uses the full precision of the floating-point type. See Also: FloatingPoint.isNormal Declaration case positiveInfinity A value equal to +infinity. Declaration