title: DEXP or EXP for exponential function in fortran?
body: <p>I have two very short questions:</p>
  <p>1 - I just read that <code>DEXP()</code> is the <em>archaic</em> form of <code>EXP()</code>. Does it mean that it should not be used anymore? I always thought that <code>DEXP()</code> was the double precision equivalent to <code>EXP()</code>.</p>
  <p>2 - What is the range of the exponential function? Is it compiler dependent?</p>