T-SQL equivalent of Excel “MAX” function to return larger of two numbers

CREATE FUNCTION dbo.LargerOf
(
    -- Add the parameters for the function here
    @First FLOAT,
    @Second FLOAT
)
RETURNS FLOAT
AS
BEGIN

    DECLARE @Result FLOAT

    IF @First > @Second
        SET @result = @First
    ELSE
        SET @Result = @Second

    RETURN @Result

END
GO

set @max = case when @first > @second then @first else @second end

CASE
   WHEN @First >= @Second THEN @FIRST
   ELSE @Second
END