如何在R中编辑double / float的尾数？

Question

我正在寻找c ++中的frexp和ldexp东西，或者其他与IEEE 754格式直接兼容的东西。

Answer 1

You can use the frexpZ function in the gmp package, or the frexp function in the accuracy package. The latter package is archived, so you'll have to do something like

devtools::install_version("accuracy","1.35")

to install it (look in the package archive to identify the latest version; you'll also need to have compilation tools installed).

frexp says it is just a wrapper around the C math library function.

I found these via sos::findFn("frexp")