some_function(
    some_variable, some_other_variable, 
    and_yet_another_variable, and_one_more_for, luck
);

##</code><code>##

if( some_return_value = some_function( 
    some_variable, some_other_variable, 
    and_yet_another_variable, and_one_more_for, 
    luck ) ) {
    // do some stuff here with some_return_value 
} else {
   // report or otherwise handle the error 
}

##</code><code>##

if( 
    some_return_value = some_function( 
        some_variable, some_other_variable, 
        and_yet_another_variable, and_one_more_for, luck 
    )
) {
    // do some stuff here with some_return_value 
} 
else {
   // report or otherwise handle the error 
}

##</code><code>##

if( someRv = fSome( some, oSome, AYAnother, OneMoreFor, luck )) {
    // do some stuff here with someRv 
} 
else {
   // report or otherwise handle the error 
}