fft5_5            540 modules/core/src/dxt.cpp     static const T fft5_5 = (T)0.363271264002680442947733378740309;
fft5_5            845 modules/core/src/dxt.cpp                     i3 *= -fft5_5; r3 *= fft5_5;
fft5_5            111 modules/core/src/opencl/fft.cl     b5 = (CT)(a4.x - fft5_5 * a1.y, a4.y + fft5_5 * a1.x);