SDL_acos3
Compute the arc cosine of x .
Usage
#include "SDL3/SDL.h"
double SDL_acos(double x);
Header file
Defined in SDL3/SDL_stdinc.h
Overview
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.
Function 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.