java - BigDecimal 的未缩放值是多少？

Question

我正在阅读 BigDecimal 的文档，但我不明白 unscaled 的含义。谁能举例说明一下？谢谢。

这是上下文

Immutable, arbitrary-precision signed decimal numbers. A BigDecimal consists of an arbitrary precision integer unscaled value and a 32-bit integer scale. If zero or positive, the scale is the number of digits to the right of the decimal point. If negative, the unscaled value of the number is multiplied by ten to the power of the negation of the scale.

Answer 1

A BigDecimal consists of an arbitrary precision integer unscaled value and a 32-bit integer scale

unscaled integer value of arbitrary precision: 87866787879879879768767554645434
scale: 3

If zero or positive, the scale is the number of digits to the right of the decimal point.

actual decimal value: 87866787879879879768767554645.434

If negative, the unscaled value of the number is multiplied by ten to the power of the negation of the scale.

unscaled integer value: 87866787879879879768767554645434
scale: -3
actual decimal value: 87866787879879879768767554645434000