FIX16Add

This function adds two signed 16-bit fixed-point numbers. The resolution (number of decimal places) of the numbers does not have to be the same. The resolution of the number with the higher number of decimal places is reduced before addition. This means that the decimal places of the number with the higher resolution are truncated. The result of the addition is a signed 16-bit fixed-point number.

Return value

VAR_INPUT
    augend : T_FIX16;
    addend : T_FIX16;
END_VAR

PROGRAM FIXADD
VAR
    a, b   : T_FIX16;
    result : LREAL;
END_VAR

a := LREAL_TO_FIX16( 0.5, 8 );
b := LREAL_TO_FIX16( -0.25, 8 );

result := FIX16_TO_LREAL( FIX16Add( a, b ) );(* The result is: 0.25 *)