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$asinh (aggregation)![](/docs/v4.4/assets/link.svg)
$asinh
New in version 4.2.
Returns the inverse hyperbolic sine (hyperbolic arc sine) of a value.
$asinh
has the following syntax:{ $asinh: <expression> } $asinh
takes any valid expression that resolves to a number.$asinh
returns values in radians. Use$radiansToDegrees
operator to convert the output value from radians to degrees.By default
$asinh
returns values as adouble
.$asinh
can also return values as a 128-bit decimal as long as the<expression>
resolves to a 128-bit decimal value.For more information on expressions, see Expressions.
Behavior![](/docs/v4.4/assets/link.svg)
null
, NaN
, and +/- Infinity
![](/docs/v4.4/assets/link.svg)
If the argument resolves to a value of null
or refers to a field
that is missing, $asinh
returns null
. If the
argument resolves to NaN
, $asinh
returns NaN
.
If the argument resolves to negative or positive infinity,
$asinh
returns negative or positive infinity respectively.
Example | Results |
---|---|
{ $asinh: NaN } | NaN |
{ $asinh: null } | null |
{ $asinh : Infinity} | Infinity |
{ $asinh : -Infinity } | -Infinity |