I'm running into a bit of a limitation with Zoho formula field functionality.  I need to use the exp() function to calculate the value of one of the custom formula fields, but even though the zoho creator documentation lists it as an allowed function, it's nowhere to be found in the default numeric functions accessible for formula fields (see here:  https://www.zoho.com/crm/help/customization/create-formula-fields.html#Create_Numeric_Formula_Field  ) and the system gives me an error when i try to incorporate it as an exp(numeric expression).  Is there a workaround that can be implemented?