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sqrt

Perl 5 version 22.0 documentation
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sqrt

Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage
  • sqrt EXPR

  • sqrt

    Return the positive square root of EXPR. If EXPR is omitted, uses $_ . Works only for non-negative operands unless you've loaded the Math::Complex module.

    1.     use Math::Complex;
    2.     print sqrt(-4);    # prints 2i
 
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