Function sdl2_sys::SDL_acos

source · 
pub unsafe extern "C" fn SDL_acos(x: f64) -> f64
Expand description

Use this function to compute arc cosine of x.

The definition of y = acos(x) is x = cos(y).

Domain: -1 <= x <= 1

Range: 0 <= y <= Pi

\param x floating point value, in radians. \returns arc cosine of x.

\since This function is available since SDL 2.0.2.