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Floating Point Form Sign Video

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Definition

Computers and calculators store real numbers in floating-point form. For example, 2001 is stored as 0.2001 X 10^4, and -0.00063 is stored as -.63 X 10^(-3). In general, the floating-point form of a number is +-M X 10^k, where k is an integer and the mantissa M is a (decimal) real number that satisfies 0.1 ≤ M < 1.

Source: Linear Algebra: A Modern Introduction, 3rd edition by David Poole (note-custom edition titled Matrix Algebra)