getSubnetAddressOctet ( IpOctet ; SubnetOctet )

Returns subnet address octet given ip address octet and subnet mask octet

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John Ahearn
none (yet)
http://none.com

Sample input:

getSubnetAddressOctet ( 4 ; 254 )

getSubnetAddressOctet ( 4 ; 252 )

getSubnetAddressOctet ( 4 ; 248 )

Sample output:

4

4

0

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

/*  
	This function determines the subnet address octet for a given ip and subnet octet.  
	
jahearn at gmail dot com
*/

Case (
 
	SubnetOctet = 255 ; IpOctet;
	SubnetOctet = 254 ; ( Int ( IpOctet / 2 ) * 2 );
	SubnetOctet = 252 ; ( Int ( IpOctet / 4 ) * 4 );
	SubnetOctet = 248 ; ( Int ( IpOctet / 8 ) * 8 );
	SubnetOctet = 240 ; ( Int ( IpOctet / 16 ) * 16 );
	SubnetOctet = 224 ; ( Int ( IpOctet / 32 ) * 32 );
	SubnetOctet = 192 ; ( Int ( IpOctet / 64 ) * 64 );
	SubnetOctet = 128 ; ( Int ( IpOctet / 128 ) * 128 );
	SubnetOctet = 0 ; 0
     )

This function determines the subnet address octet for a given ip and subnet octet.

jahearn at gmail dot com

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Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

getSubnetAddressOctet ( IpOctet ; SubnetOctet )

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