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numpy.inf ⚬｜Documentation｜1st｜20251021125630-00-⌔

Constants — NumPy v2 Manual#numpy.inf

numpy.inf

IEEE 754 floating point representation of (positive) infinity.

Returns:

y: float

A floating point representation of positive infinity.

See Also:

isinf: Shows which elements are positive or negative infinity

isposinf: Shows which elements are positive infinity

isneginf: Shows which elements are negative infinity

isnan: Shows which elements are Not a Number

isfinite: Shows which elements are finite (not one of Not a Number, positive infinity and negative infinity)

Notes:

NumPy uses the IEEE Standard for Binary Floating-Point for Arithmetic (IEEE 754). This means that Not a Number is not equivalent to infinity. Also that positive infinity is not equivalent to negative infinity. But infinity is equivalent to positive infinity.

Examples:

>>> import numpy as np
>>> np.inf
inf
>>> np.array([1]) / 0.
array([inf])

Printed 2026-06-28.

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