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scaling

Property of a decimal floating point number. A decimal floating point number can be seen as an integer number of a predefined length that is scaled by dividing through a power of ten. This defines the number of decimal places. In this sense, the negative exponent of a decimal floating point number is called the scale that applies to the mantissa. If the scale is positive, it is equivalent to the number of decimal places. Decimal floating point numbers with the same value can have different scales. Operations on decimal floating point numbers are usually given the scale and thus the number of decimal places. One built-in function for changing the scale is rescale. See also precision.

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