### 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.

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

Table: Math Query Functions