Demonstrates FP inaccuracy

BigDecimal.cfm

<cfscript>
// will result in floating point inaccuracy
all = precisionEvaluate((60 / 55) / (40 / 55));
a = precisionEvaluate(60 / 55);
b = precisionEvaluate(40 / 55);
c = precisionEvaluate(a / b);

writeDump(var={
	all = all,
	a = b,
	b = b,
	c = c
});


// will NOT result in floating point inaccuracy
mc = createObject("java", "java.math.MathContext");
mc = mc.DECIMAL128;

_60 = createObject("java", "java.math.BigDecimal").init("60", mc);
_55 = createObject("java", "java.math.BigDecimal").init("55", mc);
_40 = createObject("java", "java.math.BigDecimal").init("40", mc);

a = _60.divide(_55, mc);
b = _40.divide(_55, mc);
c = a.divide(b, mc);


writeDump(var={
	all = [_60,_55,_40],
	a = a,
	b = b,
	c = c
});
</cfscript>