### Math Query Functions

Humio's query functions take a set of events, parameters, or configurations; and produce, reduce, or modify values within that set, or within the events themselves within the query pipeline.

Table: Math Query Functions

FunctionImplied ArgumentAvailabilityDescription
`base64Decode([as], [charset], field)``field` Performs Base64 decoding of a field.
`math:abs([as], field)``field` Calculates the absolute value of a field.
`math:arccos([as], field)``field` Calculates the arc cosine of a field.
`math:arcsin([as], field)``field` Calculates the arc sine of a field.
`math:arctan([as], field)``field` Calculates the arc tangent of a value.
`math:arctan2([as], xfield, yfield)`  Calculates the arc tangent of a value.
`math:ceil([as], field)``field` Rounds field value to smallest integer that's larger than or equal to it.
`math:cos([as], field)``field` Calculates the cosine of a field.
`math:cosh([as], field)`  Returns the hyperbolic cosine of a double field.
`math:deg2rad([as], field)``field` Converts angles from degrees to radians.
`math:exp([as], field)``field` Calculates Euler's number e raised to the power of a double value in a field.
`math:expm1([as], field)``field` Returns the exponential value of a number minus 1.
`math:floor([as], field)``field` Returns largest integer value not greater than the field value given.
`math:log([as], field)``field` Calculates the natural logarithm (base e) of the value in a double field.
`math:log10([as], field)``field` Calculates the base 10 logarithm of a double field.
`math:log1p([as], field)``field` Calculates the natural logarithm of the sum of field's value and 1.
`math:log2([as], field)``field` Calculates the base 2 logarithm of a double field.
`math:mod([as], divisor, field)``field` Calculates the floor modulus of field value and the divisor.
`math:pow([as], exponent, field)``field` Calculates the field value to the exponent power.
`math:rad2deg([as], field)``field` Converts angles from radians to degrees.
`math:sin([as], field)``field` Calculates the sine of a field.
`math:sinh([as], field)``field` Calculates the hyperbolic sine of a double field.
`math:spherical2cartesian([as], azimuth, polar, radius)`  Calculates the average for a field of a set of events.
`math:sqrt([as], field)``field` Calculates the rounded positive square root of a double field.
`math:tan([as], field)``field` Calculates the trigonometric tangent of an angle in a field.
`math:tanh([as], field)``field` Calculates the hyperbolic tangent of a field.
`round([as], field, [how])``field` Rounds an input field up or down, depending on which is nearest.
`unit:convert([as], [binary], field, [from], [keepUnit], [to], [unit])``field` Converts values between different units.