std::cbrt
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                    | Defined in header  <cmath> | ||
| float       cbrt( float arg ); | (1) | (since C++11) | 
| double      cbrt( double arg ); | (2) | (since C++11) | 
| long double cbrt( long double arg ); | (3) | (since C++11) | 
| double      cbrt( Integral arg ); | (4) | (since C++11) | 
Computes the cubic root of arg.
4) A set of overloads or a function template accepting an argument of any integral type. Equivalent to 2) (the argument is cast to double).
| Contents | 
[edit] Parameters
| arg | - | value of a floating-point or Integral type | 
[edit] Return value
If no errors occur, the cubic root of arg (3√arg), is returned.
If a range error occurs due to underflow, the correct result (after rounding) is returned.
[edit] Error handling
Errors are reported as specified in math_errhandling
If the implementation supports IEEE floating-point arithmetic (IEC 60559),
- if the argument is ±0 or ±∞, it is returned, unchanged
- if the argument is NaN, NaN is returned.
[edit] Notes
std::cbrt(arg) is not equivalent to std::pow(arg, 1.0/3) because std::pow cannot raise a negative base to a fractional exponent.
[edit] Example
Run this code
Output:
cbrt(729) = 9 cbrt(-0.125) = -0.5 cbrt(-0) = -0 cbrt(+inf) = inf
[edit] See also
| raises a number to the given power (xy) (function) | |
| computes square root (√x) (function) | |
| (C++11) | computes square root of the sum of the squares of two given numbers (√x2 +y2 ) (function) | 
| C documentation for cbrt | |


