The C# standard only lists double and float as floating points available (those being the C# shorthand for System.Double and System.Single),

but the decimal type (shorthand for System.Decimal) is also a floating point type really - it's just it'sdecimal floating point, and the ranges of exponents are interesting.

The decimal type is described in another article, so this one doesn't go into it any further - we're concentrating on double and float.

Both of these are binary floating point types, conforming to IEEE 754 (a standard defining various floating point types).

float is a 32 bit type (1 bit of sign, 23 bits of mantissa, and 8 bits of exponent),

and double is a 64 bit type (1 bit of sign, 52 bits of mantissa and 11 bits of exponent).

http://kipirvine.com/asm/workbook/floating_tut.htm

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