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std::sqrt

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Defined in header <cmath>
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float       sqrt( float arg );
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double      sqrt( double arg );
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long double sqrt( long double arg );
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double      sqrt( Integral arg );
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Computes square root of arg.

Parameters

arg - floating point or integer value

Return value

square root of arg.

Domain error occurs if arg is negative. NAN is returned in that case.

See also

Template:cpp/numeric/math/dcl list cbrtTemplate:cpp/numeric/math/dcl list powTemplate:cpp/numeric/complex/dcl list sqrtTemplate:cpp/numeric/valarray/dcl list sqrt