c/numeric/math/cbrt

@1-3@ Computes the cube root of. @4@ Type-generic macro: If has type,  is called. Otherwise, if has integer type or the type,  is called. Otherwise, is called.

Return value
If no errors occur, the cube root of, is returned.

If a range error occurs due to underflow, the correct result (after rounding) is returned.

Error handling
Errors are reported as specified in.

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.