How can I get rid of these floating point errors?

[VirtualVirgin]

Occasionally I am getting values like this when doing math:

How can I limit this to a decimal place?

[d.healey]

@VirtualVirgin Math.round(), Math.floor(), Math.ceil(), Engine.doubleToString()

[VirtualVirgin]

@d-healey
In this case I am already using Math.ceil(), Math.floor() and Math.round()
then I am only multiplying and diving by powers of 10 to get a rounded decimal:

// gives a correct return for proper round (JUCE has somehow broken the rounding math)
inline function roundFix(value)
{
	local remainder = Math.fmod(value, 1.0);
	local roundedValue;
	remainder >= 0.5 ? roundedValue = Math.ceil(value) : roundedValue = Math.floor(value);
	return Math.round(roundedValue);
};

// round to a decimal place
inline function roundToDecimal(value, decimalPlace)
{
	if (decimalPlace == 0)
		return roundFix(value);
	local multiplicationFactor =  Math.pow(10, decimalPlace);
	local multipliedValue = value * multiplicationFactor;
	local roundedMultipliedValue = roundFix(multipliedValue);
	local result = roundedMultipliedValue / multiplicationFactor;
	return  result;
};

// test decimal rounding
const decimalRoundTest = roundToDecimal(78.678, 2);
Console.print("decimalRoundTest: " + decimalRoundTest);

I can't use Math.ceil(), Math.floor() and Math.round() on the end return value because I need it to keep the decimal places.

If I use Engine.doubleToString() then I don't see a way to get the value back. If I use .getIntValue() I lose the decimal places.

[d.healey]

@VirtualVirgin Why do you want less precision?