all Python 3cmathfunction

cmath.asinh()

hyperbolic functions

The inverse hyperbolic sine of a complex number. For real numbers it matches math.asinh, but as a complex value.

Syntax

cmath.asinh(z)

asinh has no forbidden region for real numbers, so the only difference from math.asinh is the type: asinh(1) gives (0.881373587019543+0j), and you need .real to get a float. Switching to cmath just in case costs extra .real calls all over the code; use it when the input is really complex.

Examples

import cmath
import math
z = cmath.asinh(1)
print(z)  # → (0.881373587019543+0j)
print(z.real == math.asinh(1))  # → True

See also

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