Полезная информация

Programming Perl

Programming PerlSearch this book
Previous: 3.2.156 sprintfChapter 3
Functions
Next: 3.2.158 srand
 

3.2.157 sqrt

sqrt EXPR
sqrt

This function returns the square root of EXPR. If EXPR is omitted, it returns the square root of $_. For other roots such as cube roots, you can use the ** operator to raise something to a fractional power.[8]

[8] Don't try either of these approaches with negative numbers, as that poses a slightly more complex problem.


Previous: 3.2.156 sprintfProgramming PerlNext: 3.2.158 srand
3.2.156 sprintfBook Index3.2.158 srand