A-M baby

Task/Arithmetic-Rational/Groovy/arithmetic-rational-2.groovy

@@ -0,0 +1,74 @@
+def x = new Rational(5, 20)
+def y = new Rational(9, 12)
+def z = new Rational(0, 10000)
+
+println x
+println y
+println z
+println (x <=> y)
+println ((x as Rational).compareTo(y))
+assert x*3 == y
+assert (z + 1) <= y*4
+assert x != y
+
+println "x + y == ${x} + ${y} == ${x + y}"
+println "x + z == ${x} + ${z} == ${x + z}"
+println "x - y == ${x} - ${y} == ${x - y}"
+println "x - z == ${x} - ${z} == ${x - z}"
+println "x * y == ${x} * ${y} == ${x * y}"
+println "y ** 3 == ${y} ** 3 == ${y ** 3}"
+println "x * z == ${x} * ${z} == ${x * z}"
+println "x / y == ${x} / ${y} == ${x / y}"
+try { print "x / z == ${x} / ${z} == "; println "${x / z}" }
+catch (Throwable t) { println t.message }
+
+println "-x == -${x} == ${-x}"
+println "-y == -${y} == ${-y}"
+println "-z == -${z} == ${-z}"
+
+print "x as int == ${x} as int == "; println x.intValue()
+print "x as double == ${x} as double == "; println x.doubleValue()
+print "1 / x as int == 1 / ${x} as int == "; println x.reciprocal().intValue()
+print "1.0 / x == 1.0 / ${x} == "; println x.reciprocal().doubleValue()
+print "y as int == ${y} as int == "; println y.intValue()
+print "y as double == ${y} as double == "; println y.doubleValue()
+print "1 / y as int == 1 / ${y} as int == "; println y.reciprocal().intValue()
+print "1.0 / y == 1.0 / ${y} == "; println y.reciprocal().doubleValue()
+print "z as int == ${z} as int == "; println z.intValue()
+print "z as double == ${z} as double == "; println z.doubleValue()
+try { print "1 / z as int == 1 / ${z} as int == "; println z.reciprocal().intValue() }
+catch (Throwable t) { println t.message }
+try { print "1.0 / z == 1.0 / ${z} == "; println z.reciprocal().doubleValue() }
+catch (Throwable t) { println t.message }
+
+println "++x == ++ ${x} == ${++x}"
+println "++y == ++ ${y} == ${++y}"
+println "++z == ++ ${z} == ${++z}"
+println "-- --x == -- -- ${x} == ${-- (--x)}"
+println "-- --y == -- -- ${y} == ${-- (--y)}"
+println "-- --z == -- -- ${z} == ${-- (--z)}"
+println x
+println y
+println z
+
+println (x <=> y)
+assert x*3 == y
+assert (z + 1) <= y*4
+assert (x < y)
+
+println (new Rational(25))
+println (new Rational(25.0))
+println (new Rational(0.25))
+
+println Math.PI
+println (new Rational(Math.PI))
+println ((new Rational(Math.PI)).toBigDecimal())
+println ((new Rational(Math.PI)) as BigDecimal)
+println ((new Rational(Math.PI)) as Double)
+println ((new Rational(Math.PI)) as double)
+println ((new Rational(Math.PI)) as boolean)
+println (z as boolean)
+try { println ((new Rational(Math.PI)) as Date) }
+catch (Throwable t) { println t.message }
+try { println ((new Rational(Math.PI)) as char) }
+catch (Throwable t) { println t.message }