What is the usage of the signif function in the R language?

In the R language, the signif function is used to round a number and specify the number of significant digits to keep. Its syntax is as follows:

signif(x, digits)

In this case, x represents the number to be rounded, and digits represent the number of significant figures to be retained.

For example, if you want to round a number to 2 decimal places, you can use the following code:

signif(3.14159, 2)

This will return 3.1 because 3.14159 rounding off retains 2 significant digits.