Math

This extension provides useful mathematical functions such as power, round, random, cos, log, etc.

Features

  • percentile (AggregateFunction)

    This functions returns the pth percentile value of a given argument.

  • abs (Function)

    This function returns the absolute value of the given parameter. It wraps the java.lang.Math.abs() function.

  • acos (Function)

    If -1 <= p1 <= 1, this function returns the arc-cosine (inverse cosine) value of p1.If the domain is invalid, it returns NULL. The value returned is in radian scale. This function wraps the java.lang.Math.acos() function.

  • asin (Function)

    If -1 <= p1 <= 1, this function returns the arc-sin (inverse sine) value of p1. If the domain is invalid, it returns NULL. The value returned is in radian scale. This function wraps the java.lang.Math.asin() function.

  • atan (Function)

    1. If a single p1 is received, this function returns the arc-tangent (inverse tangent) value of p1.
    2. If p1 is received along with an optional p1, it considers them as x and y coordinates and returns the arc-tangent (inverse tangent) value. The returned value is in radian scale. This function wraps the java.lang.Math.atan() function.
  • bin (Function)

    This function returns a string representation of the p1 argument, that is of either integer or long data type, as an unsigned integer in base 2. It wraps the java.lang.Integer.toBinaryString and java.lang.Long.toBinaryString methods.

  • cbrt (Function)

    This function returns the cube-root of p1 which is in radians. It wraps the java.lang.Math.cbrt() function.

  • ceil (Function)

    This function returns the smallest double value, i.e., the closest to the negative infinity, that is greater than or equal to the p1 argument, and is equal to a mathematical integer. It wraps the java.lang.Math.ceil() method.

  • conv (Function)

    This function converts a from the fromBase base to the toBase base.

  • copySign (Function)

    This function returns a value of an input with the received magnitude and sign of another input. It wraps the java.lang.Math.copySign() function.

  • cos (Function)

    This function returns the cosine of p1 which is in radians. It wraps the java.lang.Math.cos() function.

  • cosh (Function)

    This function returns the hyperbolic cosine of p1 which is in radians. It wraps the java.lang.Math.cosh() function.

  • e (Function)

    This function returns the java.lang.Math.E constant, which is the closest double value to e, where e is the base of the natural logarithms.

  • exp (Function)

    This function returns the Euler's number e raised to the power of p1. It wraps the java.lang.Math.exp() function.

  • floor (Function)

    This function wraps the java.lang.Math.floor() function and returns the largest value, i.e., closest to the positive infinity, that is less than or equal to p1, and is equal to a mathematical integer.

  • getExponent (Function)

    This function returns the unbiased exponent that is used in the representation of p1. This function wraps the java.lang.Math.getExponent() function.

  • hex (Function)

    This function wraps the java.lang.Double.toHexString() function. It returns a hexadecimal string representation of the input, p1.

  • isInfinite (Function)

    This function wraps the java.lang.Float.isInfinite() and java.lang.Double.isInfinite() and returns true if p1 is infinitely large in magnitude and false if otherwise.

  • isNan (Function)

    This function wraps the java.lang.Float.isNaN() and java.lang.Double.isNaN() functions and returns true if p1 is NaN (Not-a-Number), and returns false if otherwise.

  • ln (Function)

    This function returns the natural logarithm (base e) of p1.

  • log (Function)

    This function returns the logarithm of the received number as per the given base.

  • log10 (Function)

    This function returns the base 10 logarithm of p1.

  • log2 (Function)

    This function returns the base 2 logarithm of p1.

  • max (Function)

    This function returns the greater value of p1 and p2.

  • min (Function)

    This function returns the smaller value of p1 and p2.

  • oct (Function)

    This function converts the input parameter p1 to octal.

  • parseDouble (Function)

    This function returns the double value of the string received.

  • parseFloat (Function)

    This function returns the float value of the received string.

  • parseInt (Function)

    This function returns the integer value of the received string.

  • parseLong (Function)

    This function returns the long value of the string received.

  • pi (Function)

    This function returns the java.lang.Math.PI constant, which is the closest value to pi, i.e., the ratio of the circumference of a circle to its diameter.

  • power (Function)

    This function raises the given value to a given power.

  • rand (Function)

    This returns a stream of pseudo-random numbers when a sequence of calls are sent to the rand(). Optionally, it is possible to define a seed, i.e., rand(seed) using which the pseudo-random numbers are generated. These functions internally use the java.util.Random class.

  • round (Function)

    This function returns the value of the input argument rounded off to the closest integer/long value.

  • signum (Function)

    This returns +1, 0, or -1 for the given positive, zero and negative values respectively. This function wraps the java.lang.Math.signum() function.

  • sin (Function)

    This returns the sine of the value given in radians. This function wraps the java.lang.Math.sin() function.

  • sinh (Function)

    This returns the hyperbolic sine of the value given in radians. This function wraps the java.lang.Math.sinh() function.

  • sqrt (Function)

    This function returns the square-root of the given value. It wraps the java.lang.Math.sqrt()s function.

  • tan (Function)

    This function returns the tan of the given value in radians. It wraps the java.lang.Math.tan() function.

  • tanh (Function)

    This function returns the hyperbolic tangent of the value given in radians. It wraps the java.lang.Math.tanh() function.

  • toDegrees (Function)

    This function converts the value given in radians to degrees. It wraps the java.lang.Math.toDegrees() function.

  • toRadians (Function)

    This function converts the value given in degrees to radians. It wraps the java.lang.Math.toRadians() function.

percentile

This functions returns the pth percentile value of a given argument.

Syntax

<DOUBLE> math:percentile(<INT|LONG|FLOAT|DOUBLE> arg, <DOUBLE> p)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
arg The value of the parameter whose percentile should be found. INT LONG FLOAT DOUBLE No Yes
p Estimate of the percentile to be found (pth percentile) where p is any number greater than 0 or lesser than or equal to 100. DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (sensorId int, temperature double);
from InValueStream
select math:percentile(temperature, 97.0) as percentile
insert into OutMediationStream;

This function returns the percentile value based on the argument given. For example, math:percentile(temperature, 97.0) returns the 97th percentile value of all the temperature events.

abs

This function returns the absolute value of the given parameter. It wraps the java.lang.Math.abs() function.

Syntax

<DOUBLE> math:abs(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The parameter whose absolute value is found. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:abs(inValue) as absValue
from InValueStream
insert into OutMediationStream;

Irrespective of whether the inValue in the input stream holds a value of abs(3) or abs(-3),the function returns 3 since the absolute value of both 3 and -3 is 3. The result directed to OutMediationStream stream.

acos

If -1 <= p1 <= 1, this function returns the arc-cosine (inverse cosine) value of p1.If the domain is invalid, it returns NULL. The value returned is in radian scale. This function wraps the java.lang.Math.acos() function.

Syntax

<DOUBLE> math:acos(<FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose arc-cosine (inverse cosine) value is found. FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:acos(inValue) as acosValue    
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream is given, the function calculates the arc-cosine value of it and returns the arc-cosine value to the output stream, OutMediationStream. For example, acos(0.5) returns 1.0471975511965979.

asin

If -1 <= p1 <= 1, this function returns the arc-sin (inverse sine) value of p1. If the domain is invalid, it returns NULL. The value returned is in radian scale. This function wraps the java.lang.Math.asin() function.

Syntax

<DOUBLE> math:asin(<FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose arc-sin (inverse sine) value is found. FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:asin(inValue) as asinValue    
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream is given, the function calculates the arc-sin value of it and returns the arc-sin value to the output stream, OutMediationStream. For example, asin(0.5) returns 0.5235987755982989.

atan

  1. If a single p1 is received, this function returns the arc-tangent (inverse tangent) value of p1. 2. If p1 is received along with an optional p1, it considers them as x and y coordinates and returns the arc-tangent (inverse tangent) value. The returned value is in radian scale. This function wraps the java.lang.Math.atan() function.

Syntax

<DOUBLE> math:atan(<INT|LONG|FLOAT|DOUBLE> p1)
<DOUBLE> math:atan(<INT|LONG|FLOAT|DOUBLE> p1, <INT|LONG|FLOAT|DOUBLE> p2)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose arc-tangent (inverse tangent) is found. If the optional second parameter is given this represents the x coordinate of the (x,y) coordinate pair. INT LONG FLOAT DOUBLE No Yes
p2 This optional parameter represents the y coordinate of the (x,y) coordinate pair. 0D INT LONG FLOAT DOUBLE Yes Yes

EXAMPLE 1

define stream InValueStream (inValue1 double, inValue2 double);
select math:atan(inValue1, inValue2) as convertedValue
from InValueStream
insert into OutMediationStream;

If the inValue1 in the input stream is given, the function calculates the arc-tangent value of it and returns the arc-tangent value to the output stream, OutMediationStream. If both the inValue1 and inValue2 are given, then the function considers them to be x and y coordinates respectively and returns the calculated arc-tangent value to the output stream, OutMediationStream. For example, atan(12d, 5d) returns 1.1760052070951352.

bin

This function returns a string representation of the p1 argument, that is of either integer or long data type, as an unsigned integer in base 2. It wraps the java.lang.Integer.toBinaryString and java.lang.Long.toBinaryString methods.

Syntax

<STRING> math:bin(<INT|LONG> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value in either integer or long, that should be converted into an unsigned integer of base 2. INT LONG No Yes

EXAMPLE 1

define stream InValueStream (inValue long);
select math:bin(inValue) as binValue
from InValueStream    
insert into OutMediationStream;

If the inValue in the input stream is given, the function converts it into an unsigned integer in base 2 and directs the output to the output stream, OutMediationStream. For example, bin(9) returns 1001.

cbrt

This function returns the cube-root of p1 which is in radians. It wraps the java.lang.Math.cbrt() function.

Syntax

<DOUBLE> math:cbrt(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose cube-root should be found. Input is required to be in radians. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:cbrt(inValue) as cbrtValue    
from InValueStream
insert into OutMediationStream;

If the inValue is given, the function calculates the cube-root value for the same and directs the output to the output stream, OutMediationStream. For example, cbrt(17d) returns 2.5712815906582356.

ceil

This function returns the smallest double value, i.e., the closest to the negative infinity, that is greater than or equal to the p1 argument, and is equal to a mathematical integer. It wraps the java.lang.Math.ceil() method.

Syntax

<DOUBLE> math:ceil(<FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose ceiling value is found. FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:ceil(inValue) as ceilingValue    
from InValueStream
insert into OutMediationStream;

This function calculates the ceiling value of the given inValue and directs the result to OutMediationStream output stream. For example, ceil(423.187d) returns 424.0.

conv

This function converts a from the fromBase base to the toBase base.

Syntax

<STRING> math:conv(<STRING> a, <INT> from.base, <INT> to.base)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
a The value whose base should be changed. Input should be given as a String. STRING No Yes
from.base The source base of the input parameter a. INT No Yes
to.base The target base that the input parameter a should be converted into. INT No Yes

EXAMPLE 1

define stream InValueStream (inValue string,fromBase int,toBase int);
select math:conv(inValue,fromBase,toBase) as convertedValue
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream is given, and the base in which it currently resides in and the base to which it should be converted to is specified, the function converts it into a string in the target base and directs it to the output stream, OutMediationStream. For example, conv("7f", 16, 10) returns "127".

copySign

This function returns a value of an input with the received magnitude and sign of another input. It wraps the java.lang.Math.copySign() function.

Syntax

<DOUBLE> math:copySign(<INT|LONG|FLOAT|DOUBLE> magnitude, <INT|LONG|FLOAT|DOUBLE> sign)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
magnitude The magnitude of this parameter is used in the output attribute. INT LONG FLOAT DOUBLE No Yes
sign The sign of this parameter is used in the output attribute. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue1 double, inValue2 double);
select math:copySign(inValue1,inValue2) as copysignValue    
from InValueStream
insert into OutMediationStream;

If two values are provided as inValue1 and inValue2, the function copies the magnitude and sign of the second argument into the first one and directs the result to the output stream, OutMediatonStream. For example, copySign(5.6d, -3.0d) returns -5.6.

cos

This function returns the cosine of p1 which is in radians. It wraps the java.lang.Math.cos() function.

Syntax

<DOUBLE> math:cos(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose cosine value should be found.The input is required to be in radians. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:cos(inValue) as cosValue    
from InValueStream
insert into OutMediationStream;

If the inValue is given, the function calculates the cosine value for the same and directs the output to the output stream, OutMediationStream. For example, cos(6d) returns 0.9601702866503661.

cosh

This function returns the hyperbolic cosine of p1 which is in radians. It wraps the java.lang.Math.cosh() function.

Syntax

<DOUBLE> math:cosh(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose hyperbolic cosine should be found. The input is required to be in radians. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:cosh(inValue) as cosValue    
from InValueStream
insert into OutMediationStream;

If the inValue is given, the function calculates the hyperbolic cosine value for the same and directs the output to the output stream, OutMediationStream. For example, cosh (6d) returns 201.7156361224559.

e

This function returns the java.lang.Math.E constant, which is the closest double value to e, where e is the base of the natural logarithms.

Syntax

<DOUBLE> math:e()

EXAMPLE 1

define stream InValueStream (inValue double);
select math:e() as eValue
from InValueStream    
insert into OutMediationStream;

This function returns the constant, 2.7182818284590452354 which is the closest double value to e and directs the output to OutMediationStream output stream.

exp

This function returns the Euler's number e raised to the power of p1. It wraps the java.lang.Math.exp() function.

Syntax

<DOUBLE> math:exp(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The power that the Euler's number e is raised to. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:exp(inValue) as expValue    
from InValueStream
insert into OutMediationStream;

If the inValue in the inputstream holds a value, this function calculates the corresponding Euler's number e and directs it to the output stream, OutMediationStream. For example, exp(10.23) returns 27722.51006805505.

floor

This function wraps the java.lang.Math.floor() function and returns the largest value, i.e., closest to the positive infinity, that is less than or equal to p1, and is equal to a mathematical integer.

Syntax

<DOUBLE> math:floor(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose floor value should be found. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:floor(inValue) as floorValue    
from InValueStream
insert into OutMediationStream;

This function calculates the floor value of the given inValue input and directs the output to the OutMediationStream output stream. For example, (10.23) returns 10.0.

getExponent

This function returns the unbiased exponent that is used in the representation of p1. This function wraps the java.lang.Math.getExponent() function.

Syntax

<INT> math:getExponent(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of whose unbiased exponent representation should be found. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:getExponent(inValue) as expValue    
from InValueStream
insert into OutMediationStream;

This function calculates the unbiased exponent of a given input, inValue and directs the result to the OutMediationStream output stream. For example, getExponent(60984.1) returns 15.

hex

This function wraps the java.lang.Double.toHexString() function. It returns a hexadecimal string representation of the input, p1.

Syntax

<STRING> math:hex(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose hexadecimal value should be found. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue int);
select math:hex(inValue) as hexString    
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream is provided, the function converts this into its corresponding hexadecimal format and directs the output to the output stream, OutMediationStream. For example, hex(200) returns "c8".

isInfinite

This function wraps the java.lang.Float.isInfinite() and java.lang.Double.isInfinite() and returns true if p1 is infinitely large in magnitude and false if otherwise.

Syntax

<BOOL> math:isInfinite(<FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 This is the value of the parameter that the function determines to be either infinite or finite. FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue1 double,inValue2 int);
select math:isInfinite(inValue1) as isInfinite    
from InValueStream
insert into OutMediationStream;

If the value given in the inValue in the input stream is of infinitely large magnitude, the function returns the value, true and directs the result to the output stream, OutMediationStream. For example, isInfinite(java.lang.Double.POSITIVE_INFINITY) returns true.

isNan

This function wraps the java.lang.Float.isNaN() and java.lang.Double.isNaN() functions and returns true if p1 is NaN (Not-a-Number), and returns false if otherwise.

Syntax

<BOOL> math:isNan(<FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter which the function determines to be either NaN or a number. FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue1 double,inValue2 int);
select math:isNan(inValue1) as isNaN    
from InValueStream
insert into OutMediationStream;

If the inValue1 in the input stream has a value that is undefined, then the function considers it as an NaN value and directs True to the output stream, OutMediationStream. For example, isNan(java.lang.Math.log(-12d)) returns true.

ln

This function returns the natural logarithm (base e) of p1.

Syntax

<DOUBLE> math:ln(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose natural logarithm (base e) should be found. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:ln(inValue) as lnValue    
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream is given, the function calculates its natural logarithm (base e) and directs the results to the output stream, OutMeditionStream. For example, ln(11.453) returns 2.438251704415579.

log

This function returns the logarithm of the received number as per the given base.

Syntax

<DOUBLE> math:log(<INT|LONG|FLOAT|DOUBLE> number, <INT|LONG|FLOAT|DOUBLE> base)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
number The value of the parameter whose base should be changed. INT LONG FLOAT DOUBLE No Yes
base The base value of the ouput. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (number double, base double);
select math:log(number, base) as logValue    
from InValueStream
insert into OutMediationStream;

If the number and the base to which it has to be converted into is given in the input stream, the function calculates the number to the base specified and directs the result to the output stream, OutMediationStream. For example, log(34, 2f) returns 5.08746284125034.

log10

This function returns the base 10 logarithm of p1.

Syntax

<DOUBLE> math:log10(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose base 10 logarithm should be found. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:log10(inValue) as lnValue    
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream is given, the function calculates the base 10 logarithm of the same and directs the result to the output stream, OutMediatioStream. For example, log10(19.234) returns 1.2840696117100832.

log2

This function returns the base 2 logarithm of p1.

Syntax

<DOUBLE> math:log2(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose base 2 logarithm should be found. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:log2(inValue) as lnValue    
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream is given, the function calculates the base 2 logarithm of the same and returns the value to the output stream, OutMediationStream. For example log2(91d) returns 6.507794640198696.

max

This function returns the greater value of p1 and p2.

Syntax

<DOUBLE> math:max(<INT|LONG|FLOAT|DOUBLE> p1, <INT|LONG|FLOAT|DOUBLE> p2)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 One of the input values to be compared in order to find the larger value of the two INT LONG FLOAT DOUBLE No Yes
p2 The input value to be compared with p1 in order to find the larger value of the two. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue1 double,inValue2 int);
select math:max(inValue1,inValue2) as maxValue    
from InValueStream
insert into OutMediationStream;

If two input values inValue1, and inValue2 are given, the function compares them and directs the larger value to the output stream, OutMediationStream. For example, max(123.67d, 91) returns 123.67.

min

This function returns the smaller value of p1 and p2.

Syntax

<DOUBLE> math:min(<INT|LONG|FLOAT|DOUBLE> p1, <INT|LONG|FLOAT|DOUBLE> p2)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 One of the input values that are to be compared in order to find the smaller value. INT LONG FLOAT DOUBLE No Yes
p2 The input value that is to be compared with p1 in order to find the smaller value. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue1 double,inValue2 int);
select math:min(inValue1,inValue2) as minValue    
from InValueStream
insert into OutMediationStream;

If two input values, inValue1 and inValue2 are given, the function compares them and directs the smaller value of the two to the output stream, OutMediationStream. For example, min(123.67d, 91) returns 91.

oct

This function converts the input parameter p1 to octal.

Syntax

<STRING> math:oct(<INT|LONG> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose octal representation should be found. INT LONG No Yes

EXAMPLE 1

define stream InValueStream (inValue long);
select math:oct(inValue) as octValue    
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream is given, this function calculates the octal value corresponding to the same and directs it to the output stream, OutMediationStream. For example, oct(99l) returns \"143\".

parseDouble

This function returns the double value of the string received.

Syntax

<DOUBLE> math:parseDouble(<STRING> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value that should be converted into a double value. STRING No Yes

EXAMPLE 1

define stream InValueStream (inValue string);
select math:parseDouble(inValue) as output    
from InValueStream
insert into OutMediationStream;

If the inValue in the input stream holds a value, this function converts it into the corresponding double value and directs it to the output stream, OutMediationStream. For example, parseDouble(\"123\") returns 123.0.

parseFloat

This function returns the float value of the received string.

Syntax

<FLOAT> math:parseFloat(<STRING> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value that should be converted into a float value. STRING No Yes

EXAMPLE 1

define stream InValueStream (inValue string);
select math:parseFloat(inValue) as output    
from InValueStream
insert into OutMediationStream;

The function converts the input value given in inValue,into its corresponding float value and directs the result into the output stream, OutMediationStream. For example, parseFloat(\"123\") returns 123.0.

parseInt

This function returns the integer value of the received string.

Syntax

<INT> math:parseInt(<STRING> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value that should be converted to an integer. STRING No Yes

EXAMPLE 1

define stream InValueStream (inValue string);
select math:parseInt(inValue) as output    
from InValueStream
insert into OutMediationStream;

The function converts the inValue into its corresponding integer value and directs the output to the output stream, OutMediationStream. For example, parseInt("123") returns 123.

parseLong

This function returns the long value of the string received.

Syntax

<LONG> math:parseLong(<STRING> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value that should be converted to a long value. STRING No Yes

EXAMPLE 1

define stream InValueStream (inValue string);
select math:parseLong(inValue) as output    
from InValueStream
insert into OutMediationStream;

The function converts the inValue to its corresponding long value and directs the result to the output stream, OutMediationStream. For example, parseLong("123") returns 123.

pi

This function returns the java.lang.Math.PI constant, which is the closest value to pi, i.e., the ratio of the circumference of a circle to its diameter.

Syntax

<DOUBLE> math:pi()

EXAMPLE 1

define stream InValueStream (inValue double);
select math:pi() as piValue    
from InValueStream
insert into OutMediationStream;

pi() always returns 3.141592653589793.

power

This function raises the given value to a given power.

Syntax

<DOUBLE> math:power(<INT|LONG|FLOAT|DOUBLE> value, <INT|LONG|FLOAT|DOUBLE> to.power)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
value The value that should be raised to the power of to.power input parameter. INT LONG FLOAT DOUBLE No Yes
to.power The power to which the value input parameter should be raised. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue1 double, inValue2 double);
select math:power(inValue1,inValue2) as powerValue    
from InValueStream
insert into OutMediationStream;

This function raises the inValue1 to the power of inValue2 and directs the output to the output stream, OutMediationStream. For example, (5.6d, 3.0d) returns 175.61599999999996.

rand

This returns a stream of pseudo-random numbers when a sequence of calls are sent to the rand(). Optionally, it is possible to define a seed, i.e., rand(seed) using which the pseudo-random numbers are generated. These functions internally use the java.util.Random class.

Syntax

<DOUBLE> math:rand()
<DOUBLE> math:rand(<INT|LONG> seed)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
seed An optional seed value that will be used to generate the random number sequence. defaultSeed INT LONG Yes Yes

EXAMPLE 1

define stream InValueStream (symbol string, price long, volume long);
select math:oct(inValue) as octValue    
from InValueStream select symbol, math:rand() as randNumber
insert into OutMediationStream;

In the example given above, a random double value between 0 and 1 will be generated using math:rand().

round

This function returns the value of the input argument rounded off to the closest integer/long value.

Syntax

<INT|LONG> math:round(<FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value that should be rounded off to the closest integer/long value. FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:round(inValue) as roundValue    
from InValueStream
insert into OutMediationStream;

The function rounds off inValue1 to the closest int/long value and directs the output to the output stream, OutMediationStream. For example, round(3252.353) returns 3252.

signum

This returns +1, 0, or -1 for the given positive, zero and negative values respectively. This function wraps the java.lang.Math.signum() function.

Syntax

<INT> math:signum(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value that should be checked to be positive, negative or zero. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:signum(inValue) as sign    
from InValueStream
insert into OutMediationStream;

The function evaluates the inValue given to be positive, negative or zero and directs the result to the output stream, OutMediationStream. For example, signum(-6.32d) returns -1.

sin

This returns the sine of the value given in radians. This function wraps the java.lang.Math.sin() function.

Syntax

<DOUBLE> math:sin(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose sine value should be found. Input is required to be in radians. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:sin(inValue) as sinValue    
from InValueStream
insert into OutMediationStream;

The function calculates the sine value of the given inValue and directs the output to the output stream, OutMediationStream. For example, sin(6d) returns -0.27941549819892586.

sinh

This returns the hyperbolic sine of the value given in radians. This function wraps the java.lang.Math.sinh() function.

Syntax

<DOUBLE> math:sinh(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose hyperbolic sine value should be found. Input is required to be in radians. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:sinh(inValue) as sinhValue    
from InValueStream
insert into OutMediationStream;

This function calculates the hyperbolic sine value of inValue and directs the output to the output stream, OutMediationStream. For example, sinh(6d) returns 201.71315737027922.

sqrt

This function returns the square-root of the given value. It wraps the java.lang.Math.sqrt()s function.

Syntax

<DOUBLE> math:sqrt(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose square-root value should be found. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:sqrt(inValue) as sqrtValue    
from InValueStream
insert into OutMediationStream;

The function calculates the square-root value of the inValue and directs the output to the output stream, OutMediationStream. For example, sqrt(4d) returns 2.

tan

This function returns the tan of the given value in radians. It wraps the java.lang.Math.tan() function.

Syntax

<DOUBLE> math:tan(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose tan value should be found. Input is required to be in radians. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:tan(inValue) as tanValue    
from InValueStream
insert into OutMediationStream;

This function calculates the tan value of the inValue given and directs the output to the output stream, OutMediationStream. For example, tan(6d) returns -0.29100619138474915.

tanh

This function returns the hyperbolic tangent of the value given in radians. It wraps the java.lang.Math.tanh() function.

Syntax

<DOUBLE> math:tanh(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The value of the parameter whose hyperbolic tangent value should be found. Input is required to be in radians. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:tanh(inValue) as tanhValue    
from InValueStream
insert into OutMediationStream;

If the inVaue in the input stream is given, this function calculates the hyperbolic tangent value of the same and directs the output to OutMediationStream stream. For example, tanh(6d) returns 0.9999877116507956.

toDegrees

This function converts the value given in radians to degrees. It wraps the java.lang.Math.toDegrees() function.

Syntax

<DOUBLE> math:toDegrees(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The input value in radians that should be converted to degrees. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:toDegrees(inValue) as degreesValue    
from InValueStream
insert into OutMediationStream;

The function converts the inValue in the input stream from radians to degrees and directs the output to OutMediationStream output stream. For example, toDegrees(6d) returns 343.77467707849394.

toRadians

This function converts the value given in degrees to radians. It wraps the java.lang.Math.toRadians() function.

Syntax

<DOUBLE> math:toRadians(<INT|LONG|FLOAT|DOUBLE> p1)

QUERY PARAMETERS

Name Description Default Value Possible Data Types Optional Dynamic
p1 The input value in degrees that should be converted to radians. INT LONG FLOAT DOUBLE No Yes

EXAMPLE 1

define stream InValueStream (inValue double);
select math:toRadians(inValue) as radiansValue    
from InValueStream
insert into OutMediationStream;

This function converts the input, from degrees to radians and directs the result to OutMediationStream output stream. For example, toRadians(6d) returns 0.10471975511965977.

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