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https://issues.apache.org/jira/browse/CASSANDRA-17221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Lerer updated CASSANDRA-17221:
---------------------------------------
Description:
We should add native Maths functions for the most common operations:
* {{abs((x))}} returns the absolute value of the x
* {{exp((x))}} returns the value of e (the base of natural logarithms) raised
to the power of x
* {{log((x))}} returns the natural logarithm (base e) of x
* {{log10((x))}} returns the base-10 logarithm of x
* {{round((x))}} returns the closest integer to x
+Additional information for newcomers:+
The new functions should be put in a new class {{MathFcts}} similar to
{{TimeFcts}}.
The {{MathsFcts.all()}} method should be called in {{SystemKeyspace.functions}}
The unit tests for the functions should be put in a {{MathFctsTest}} similar to
{{TimeFctsTest}}
was:
We should add native Maths functions for the most common operations:
* {{abs(x)}} returns the absolute value of the x
* {{exp(x)}} returns the value of e (the base of natural logarithms) raised to
the power of x
* {{log(x)}} returns the natural logarithm (base e) of x
* {{log10(x)}} returns the base-10 logarithm of x
* {{round(x)}} returns the closest integer to x
+Additional information for newcomers:+
The new functions should be put in a new class {{MathFcts}} similar to
{{TimeFcts}}.
The {{MathsFcts.all()}} method should be called in {{SystemKeyspace.functions}}
The unit tests for the functions should be put in a {{MathFctsTest}} similar to
{{TimeFctsTest}}
> Add Math functions
> -------------------
>
> Key: CASSANDRA-17221
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17221
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Benjamin Lerer
> Priority: Normal
>
> We should add native Maths functions for the most common operations:
> * {{abs((x))}} returns the absolute value of the x
> * {{exp((x))}} returns the value of e (the base of natural logarithms) raised
> to the power of x
> * {{log((x))}} returns the natural logarithm (base e) of x
> * {{log10((x))}} returns the base-10 logarithm of x
> * {{round((x))}} returns the closest integer to x
> +Additional information for newcomers:+
> The new functions should be put in a new class {{MathFcts}} similar to
> {{TimeFcts}}.
> The {{MathsFcts.all()}} method should be called in
> {{SystemKeyspace.functions}}
> The unit tests for the functions should be put in a {{MathFctsTest}} similar
> to {{TimeFctsTest}}
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