sdlAtan function

double sdlAtan(
  1. double x
)

Compute the arc tangent of x.

The definition of y = atan(x) is x = tan(y).

Domain: -INF <= x <= INF

Range: -Pi/2 <= y <= Pi/2

This function operates on double-precision floating point values, use SDL_atanf for single-precision floats.

To calculate the arc tangent of y / x, use SDL_atan2.

This function may use a different approximation across different versions, platforms and configurations. i.e, it can return a different value given the same input on different machines or operating systems, or if SDL is updated.

\param x floating point value. \returns arc tangent of of x in radians, or 0 if x = 0.

\threadsafety It is safe to call this function from any thread.

\since This function is available since SDL 3.1.3.

\sa SDL_atanf \sa SDL_atan2 \sa SDL_tan

extern SDL_DECLSPEC double SDLCALL SDL_atan(double x)

Implementation

double sdlAtan(double x) {
  final sdlAtanLookupFunction = libSdl3.lookupFunction<
      Double Function(Double x), double Function(double x)>('SDL_atan');
  return sdlAtanLookupFunction(x);
}