SDL_asin - Man Page

#include <SDL3/SDL_stdinc.h>

double SDL_asin(double 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.

x

floating point value.

Returns arc sine of x, in radians.

It is safe to call this function from any thread.

This function is available since SDL 3.2.0.

SDL_asinf(3), SDL_acos(3), SDL_sin(3)

SDL_acos(3), SDL_asinf(3), SDL_sin(3).