How to get my result in decimal precision control with power value?
如何获得我在功率值的小数精度控制的结果吗？
To create a decimal type, you specify the precision and, optionally, the scale for the data to be stored.
要创建算术类型，应当指定保存的数据的精度，并可选地指定数据的刻度。
If you've never encountered an exact precision data type, the distinction between a decimal and floating-point type may be confusing.
如果从未遇到过准确精度数据类型，那么对算术类型和浮点类型可能有些迷惑。
So it turns out there's a solution to this: If you need more precision, more digits after the decimal point than a float allows, what do you go for instead?
所以这里有一个解决方案：，如果你需要比float类型允许的更高精度，小数点后更多位数，那你该用什么取代它？
The price column is created as a DECIMAL data type with a precision of 5 and a scale of 2.
price列创建为DECIMAL数据类型，精度为5，刻度为2。
Precision is the total number of digits both left and right of the decimal.
Precision是指小数点左右的总位数。
It varies from decimal in that precision decimal Numbers carry not only a numeric value but also an arithmetic precision that is retained.
它与decimal不同，因为精度十进制数不仅包含一个数字值，而且保留了一个算法精度。
For XSD: decimal, XSD: double, and XSD: float types, each platform might have different precision support.
对于xsd：decimal、xsd： double和xsd：float类型，每个平台可能有不同的精度支持。
Derby provides support for real Numbers in several formats: single-precision floating-point, double-precision floating-point, and an exact representation decimal, as presented in Table 2.
Derby对实数提供了多种格式的支持：单精度浮点、双精度浮点以及准确的算术表示，如表2所示。
These are based on the IEEE 754 standard, which defines a binary standard for 32-bit floating point and 64-bit double precision floating point binary-decimal Numbers.
它们都依据IEEE 754标准，该标准为32位浮点和64位双精度浮点二进制小数定义了二进制标准。
One takes a double-precision floating point as input, another takes an integer and a scale factor, and another takes a String representation of a decimal number.
其中一个构造函数以双精度浮点数作为输入，另一个以整数和换算因子作为输入，还有一个以小数的String表示作为输入。
Speed, two integer a decimal mode has higher precision of the show.
速，两位整数一位小数的显示方式具有更高的显示精度。
BigDecimal is a standard class, with no special support in the compiler, to represent arbitrary-precision decimal Numbers and perform arithmetic on them.
BigDecimal是标准的类，在编译器中不需要特殊支持，它可以表示任意精度的小数，并对它们进行计算。
Internally, BigDecimal is represented as an arbitrary-precision unscaled value and a scale factor, which represents how many places to move the decimal point left to obtain the scaled value.
在内部，可以用任意精度任何范围的值和一个换算因子来表示BigDecimal，换算因子表示左移小数点多少位，从而得到所期望范围内的值。
For example, a business user might not know that double means a double-precision decimal.
例如，业务用户可能不知道double表示双精度小数。
If need to use decimal field, precision demand is not high, use FLOAT of course.
如果需要用到小数的字段，精度要求不高的，当然用FLOAT了。
Attempting to retrieve decimal data with a larger precision will cause an exception.
尝试使用更大的精度来检索十进制数据将导致异常。
The invention has the advantages that a method for eliminating decimal phase error of square wave is provided, and the method effectively improves the time measuring precision with lower cost.
本发明的优点在于提供了一种消除方波小数倍相位误差的方法，该方法以较小的代价，有效地提高了时间测量精度。
You can also use a fixed-precision decimal type, or cast floating-point Numbers to a fixed-precision decimal type before you work with them.
您也可以使用固定精度的十进制类型，或者在使用浮点数之前将它们强制转换为固定精度的十进制类型。
Rounds a decimal value to a specified precision.
将十进位的值舍入至指定的精确度。
Converts the value of the specified decimal number to an equivalent double-precision floating-point number.
将指定的单精度浮点数的值转换为等效的双精度浮点数。
Converts the value of the specified decimal number to an equivalent single-precision floating-point number.
将指定的双精度浮点数的值转换为等效的单精度浮点数。
Converts the value of the specified decimal number to an equivalent single-precision floating-point number.
将指定的双精度浮点数的值转换为等效的单精度浮点数。
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