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sqrt

Perl 5 version 8.8 documentation
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sqrt

  • sqrt EXPR

  • sqrt

    Return the square root of EXPR. If EXPR is omitted, returns square root of $_ . Only works on non-negative operands, unless you've loaded the standard Math::Complex module.

    1. use Math::Complex;
    2. print sqrt(-2); # prints 1.4142135623731i