Functions and Directives Functions and Directives

Function Max() Foundation

Determines the larger of two numeric or two date values.

Syntax
Max( <ndExpression1>, <ndExpression2> ) --> ndMax
Parameters
<ndExpression>
<ndExpression1> and <ndExpression2> are numeric or date values which are compared. Both must be of the same data type.
Return

The return value of Max() is the greater of the two arguments.

Description

Max() determines the maximum of two values. Two numeric or two date values can be compared. The data type of the return value is the same as the data type of the comparison values. The counterpart of Max() is the function Min() which returns the lesser of two values.

Examples
Max() 
// The example shows various results of the function Max(). 

PROCEDURE Main 

   ? Max(4, 7)                       // result: 7 
   ? Max(7, 4)                       // result: 7 

   ? Date()                          // result: 12/06/94 
   ? Max( Date(), CtoD("12/24/94") ) // result: 12/24/94 

RETURN
Determine the size of the largest DBF file 
// In this example the file size of the largest DBF file 
// and the date of the DBF file last used is determined. 
// Symbolic constants from the header file Directry.ch 
// are used. 

#include "Directry.ch" 

PROCEDURE Main 
   LOCAL aDbfFiles := Directory("*.DBF") 
   LOCAL nMaxSize  := 0 
   LOCAL dLastDate := CtoD("") 

   AEval( aDbfFiles, ; 
          {|a| nMaxSize := Max( nMaxSize, a[F_SIZE] ), ; 
               dLastDate:= Max( dLastDate,a[F_DATE] )  } ) 
   ? nMaxSize 
   ? dLastDate 
RETURN
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