Defined in header <complex> | ||
|---|---|---|
template< class T > complex<T> polar( const T& r, const T& theta = T()); |
Returns a complex number with magnitude r and phase angle theta.
The behavior is undefined if r is negative or NaN, or if theta is infinite.
| r | - | magnitude |
| theta | - | phase angle |
a complex number determined by r and theta.
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 2459 | C++98 | behavior unclear for some inputs | made undefined |
| LWG 2870 | C++98 | default value of parameter theta not dependent | made dependent |
| returns the magnitude of a complex number (function template) |
|
| returns the phase angle (function template) |
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