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GetAsHexBytes ( number ; bytes )

Displays number as bytes in hexadecimal format

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Richard Dyce - Show more from this author Dyce & Sons Ltd. http://dyce.com

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

// GetAsHexBytes ( number ; bytes ) // Standalone function // Displays number as bytes in hexadecimal format // If bytes is negative, displays them in LSB -> MSB order // // GetAsHexBytes ( 65 ; 1 ) => 41 // GetAsHexBytes ( 65 ; 4 ) => 00000041 // GetAsHexBytes ( 65 ; -4 ) => 41000000 // GetAsHexBytes ( 8553 ; 4 ) => 00002169 // GetAsHexBytes ( 8553 ; -4 ) => 69210000 // GetAsHexBytes ( 8553 ; 1 ) => 2169 // GetAsHexBytes ( 8553 ; -1 ) => 6921 Let( [ p = Ceiling( Lg( number + 1 ) / Lg( 256 ) ); // require places to display b = if( Abs ( bytes ) > p ; Abs ( bytes ) ; p ); // always show at least minimum width k = "0123456789ABCDEF"; r1 = Div ( number ; 16 ); r2 = Div ( r1 ; 16 ); r3 = Div ( r2 ; 16 ); r4 = Div ( r3 ; 16 ); r5 = Div ( r4 ; 16 ); r6 = Div ( r5 ; 16 ); r7 = Div ( r6 ; 16 ) ]; If( bytes > 0 ; // MSB -> LSB order If( b >= 4 ; Middle(k;Mod(r7;16)+1;1) ) & If( b >= 4 ; Middle(k;Mod(r6;16)+1;1) ) & If( b >= 3 ; Middle(k;Mod(r5;16)+1;1) ) & If( b >= 3 ; Middle(k;Mod(r4;16)+1;1) ) & If( b >= 2 ; Middle(k;Mod(r3;16)+1;1) ) & If( b >= 2 ; Middle(k;Mod(r2;16)+1;1) ) & If( b >= 1 ; Middle(k;Mod(r1;16)+1;1) ) & If( b >= 1 ; Middle(k;Mod(number;16)+1;1) ) ; // LSB -> MSB order Middle(k;Mod(r1;16)+1;1) & Middle(k;Mod(number;16)+1;1) & If( b >= 2 ; Middle(k;Mod(r3;16)+1;1) ) & If( b >= 2 ; Middle(k;Mod(r2;16)+1;1) ) & If( b >= 3 ; Middle(k;Mod(r5;16)+1;1) ) & If( b >= 3 ; Middle(k;Mod(r4;16)+1;1) ) & If( b >= 4 ; Middle(k;Mod(r7;16)+1;1) ) & If( b >= 4 ; Middle(k;Mod(r6;16)+1;1) ) ) ) Click to copy

If bytes is negative, displays them in LSB -> MSB order. Maxmimum width is 4 bytes, i.e. 00000000.

 

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