[Chapter 3] 3.2.157 sqrt
Author: Larry Wall, Tom Christiansen & Randal L. Schwartz
Date: 1999-07-02T01:54:33Z

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| Chapter 3 Functions |

### 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.

3.2.156 sprintf |  | 3.2.158 srand