Examples with Expression com.googlecode.aviator.Expression used on opensource projects

Example 31 with Expression

use of com.googlecode.aviator.Expression in project aviatorscript by killme2008.

the class GrammarUnitTest method testExponent.

@Test
public void testExponent() {
    assertEquals(1, exec("0**0"));
    assertEquals(1, exec("1**0"));
    assertEquals(1.0, exec("1.2**0"));
    assertEquals(-9, exec("-3**2"));
    assertEquals(-1.0, exec("-1.2**0"));
    assertEquals(-1, exec("-1**0"));
    assertEquals(new BigDecimal("1"), exec("3M**0"));
    assertEquals(new BigInteger("-1"), exec("-2N**0"));
    assertEquals(1, exec("1 + 4/2**3"));
    assertEquals(1, exec("1 + 4/-2**3"));
    assertEquals(33.0, exec("1 + 4/2**-3"));
    assertEquals(5, exec("1 + 4/2**0"));
    assertEquals(-2.2, exec("1-4**2*5**-1"));
    assertEquals(-2.2, exec("1-(4**2)*(5**-1)"));
    assertEquals(Math.pow(2, 1000), exec("2**1000.0"));
    assertEquals(Math.pow(2, 1000), exec("2.0**1000.0"));
    assertEquals(Math.pow(2, 1000), exec("2.0**1000"));
    assertEquals(new BigDecimal("2.0").pow(1000, RuntimeUtils.getMathContext(null)), exec("2.0M**1000"));
    assertEquals(new BigDecimal("2.0").pow(1000, RuntimeUtils.getMathContext(null)), exec("2.0M**1000.001"));
    assertEquals(new BigInteger("2").pow(1000), exec("2N**1000.001"));
    assertEquals(new BigInteger("2").pow(1000), exec("2N**1000.001"));
    Expression exp = this.instance.compile("a-b/c**2.0*1000");
    assertEquals(-221.2222222222222, exp.execute(exp.newEnv("a", 1, "b", 2, "c", 3)));
    assertEquals(-221.2222222222222, exp.execute(exp.newEnv("a", 1, "b", -2, "c", -3)));
    assertEquals(322.2222222222222, exec("100-2/-3**2.0*1000"));
    assertEquals(-122.2222222222222, exec("100-2/(-3)**2.0*1000"));
    assertEquals(-122.2222222222222, exp.execute(exp.newEnv("a", 100, "b", 2, "c", -3)));
}