devela::_dep::sdl3::sys::stdinc

Function SDL_asin

pub unsafe extern "C" fn SDL_asin(x: f64) -> f64 ⓘ
Available on crate feature dep_sdl3 only.
Expand description

Compute the arc sine of x.

The definition of y = asin(x) is x = sin(y).

Domain: -1 <= x <= 1

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

This function operates on double-precision floating point values, use SDL_asinf 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 sine 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.

§See also