Function sin1

examples/Showcase/examples_frame.cpp:43–46

}

inline float sin1(float phase) {
  float approx = quickSin1(phase - floorf(phase));
  return approx * (0.776f + 0.224f * fabsf(approx));
}

static constexpr float kHalfPi = 3.14159265358979323846f * 0.5f;