IEEE 754 represents floatingpoint Numbers as base 2 decimal Numbers in scientific notation.
IEEE 754用科学记数法以底数为2的小数来表示浮点数。
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A real type defines a set of Numbers that can be represented with floating-pointnotation.
实数类型定义了一组可以以浮点记号描述的数。
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Floating-Point literals may also be represented using exponential notation: a real number followed by the letter e(or E), followed by an optional plus or minus sign, followed by an integer exponent.