If you specify the precision to be a value of 23 or less, the FLOAT (val) is equivalent to a REAL; if the precision is between 24 and 53, the FLOAT (val) is equivalent to a DOUBLE.

如果指定了小于等于23的精度值，FLOAT (val)就等价于REAL；如果精度在24和53之间，那么FLOAT (val)等价于DOUBLE。

youdao

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。

youdao

It is clear that Fermi's real performance advantage would be Double Precision performance - had it hit the right clock speeds.

显然，费米的实际性能上的优势将是双精度性能-如果它击中的时钟速度。

youdao