Max

This function is used to calculate the maximum for a list of elements such as dates, numeric values, and string values. It works on a list of elements that can be:
* Expressions.
* Arrays or sub-arrays of an array.
* Properties in an array of references.

Syntax

max(ELEMENT_LIST)

• ELEMENT_LIST is a list of ELEMENTS separated by commas.
• ELEMENTS can be:
  • Any expression.
  • An array identified by its name. All elements in the array will be considered.
  • A sub-array identified by an index value or an index range defined by the syntax FIRST_INDEX..LAST_INDEX. If several dimensions exist, the index range or the index values must be given for all dimensions.
  • A property in an array of child instances defined by the syntax INSTANCE(FIRST_INDEX..LAST_INDEX).PROPERTY.
• FIRST_INDEX and LAST_INDEX are integer value returning an index value in an array.
• INSTANCE is the name of an array of instances (class or representation).

Examples

# Calculates the max for a list of totaled valuesMY_RATE=max(CURRENT_CURRENCY_RATE, AVERAGE_COMPOUND_RATE, LEGAL_RATE)# Is there a unique delivery date for a sales order?If max(MYORDER.LINES(1..maxtab(MYORDER.LINES)).DELIVERYDATE<>min(MYORDER.LINES(1..maxtab(MYORDER.LINES)).DELIVERYDATE)MESSAGE="We have to ship the order lines at different dates"ElseMESSAGE="All the lines can be delivered at the same date"Endif# Maximum and minimum on a matrix of values# We have NB_SALESREP sales representative in our department (NB_SALESREP<20)Local Decimal TURNOVER(1..12,1..20), BEST_TURNOVER, WORST_TURNOVERLocal Integer MONTH, SALESREP_ID# Fill the arrayFor MONTH=1 To 12For SALESREP_ID=1 To NB_SALESREPTURNOVER(MONTH,SALESREP_ID)=func GET_FIGURES(MONTH, SALESREP_ID)Next SALESREP_IDNext MONTH# Find out the best and the worst turnoverBEST_TURNOVER=max(TURNOVER(1..12,1..NB_SALESREP))WORST_TURNOVER=min(TURNOVER1..12,1..NB_SALESREP))

Comments

Decimal, integer, floating point and double variables may be mixed for a numerical maximum.

If one of the arguments in the function is an array variable without specifying index or range of indexes, all the variable elements are used. The specified index or range of indexes determines the elements to be considered.

If a range of indexes is given such that there is no element to consider, the result returned is the lowest possible value such as an empty string, null date, or lowest numeric value depending on the type of variable.

The type of result depends on the type of argument:

• Maximum of strings: the result is a Char type.
• Numerical maximum : the result is a Decimal type.
• Maximum of dates: the result is a Date type.

See also

sum, prd, avg, min.