Method testExp

JSAT/test/jsat/math/FastMathTest.java:181–194

Test of exp method, of class FastMath.

()

     * Test of exp method, of class FastMath.
     */
    @Test
    public void testExp()
    {
        System.out.println("exp");
        DoubleList relErrs = new DoubleList();
        int trials = 10000;
        for(int i = 0; i < trials; i++)
        {
            double x = rand.nextDouble()*50-25;
            relErrs.add(relErr(Math.exp(x), FastMath.exp(x)));
        }
        Collections.sort(relErrs);
        assertTrue(relErrs.get((int) (trials*.95)) <= 1e-3);
    }

    /**
     * Test of digamma method, of class FastMath.