Floating-point cheat sheet for C#

Floating-Point Types

C# has IEEE 754 single and double precision types supported by keywords:

	float f = 0.1f; // 32 bit float, note f suffix
	double d = 0.1d; // 64 bit float, suffix optional

Decimal Types

C# has a 128 bit limited-precision decimal type denoted by the keyword decimal:

	decimal myMoney = 300.1m; // note m suffix on the literal

How to Round

The Math.Round() method works with the double and decimal types, and allows you to specify a rounding mode:

	Math.Round(1.25m, 1, MidpointRounding.AwayFromZero); // returns 1.3


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