Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_asin - Compute the arc sine of x .
HEADER FILE
Defined in SDL3/SDL_stdinc.h
SYNOPSIS
#include "SDL3/SDL.h" double SDL_asin(double x);
DESCRIPTION
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.
FUNCTION 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
•(3), SDL_asinf(3), •(3), SDL_acos(3), •(3), SDL_sin(3) Simple Directmedia Layer SDL 3.2.8 SDL_asin(3)