Function SDL_acos
pub unsafe extern "C" fn SDL_acos(x: f64) -> f64 ⓘ
Available on crate feature
dep_sdl3
only.Expand description
Compute the arc cosine of x
.
The definition of y = acos(x)
is x = cos(y)
.
Domain: -1 <= x <= 1
Range: 0 <= y <= Pi
This function operates on double-precision floating point values, use
SDL_acosf
for single-precision floats.
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.
§Parameters
x
: floating point value.
§Return value
Returns arc cosine of x
, in radians.
§Thread safety
It is safe to call this function from any thread.
§Availability
This function is available since SDL 3.2.0.