function template
<complex>
std::log
template<class T> complex<T> log (const complex<T>& x);
Natural logarithm of complex
Returns the natural (base-e) logarithm of the complex number x, using the principal branch, whose cuts are along the negative real axis.
The value computed is bounded along the imaginary axis between [-i*PI,i*PI].
When x is a negative real number, log(x).imag() is PI.
This is the complex version of the log function (defined in <cmath>).
Parameters
- x
- Complex value.
Return value
Natural logarithm of x.
See also
- log10
- Common logarithm of complex (function template
)
- exp
- Exponential of complex (function template
)
- pow
- Power of complex (function template
)
- log (cmath)
- Compute natural logarithm (function
)