Man page - sdl_atan(3)

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Manual

SDL_atan

NAME
HEADER FILE
SYNOPSIS
DESCRIPTION
FUNCTION PARAMETERS
RETURN VALUE
THREAD SAFETY
AVAILABILITY
SEE ALSO

NAME

SDL_atan - Compute the arc tangent of x .

HEADER FILE

Defined in SDL3/SDL_stdinc.h

SYNOPSIS

#include "SDL3/SDL.h"

double SDL_atan(double x);

DESCRIPTION

The definition of y = atan(x) is x = tan(y) .

Domain: -INF <= x <= INF Range: -Pi/2 <= y <= Pi/2 This function operates on double-precision floating point values, use

SDL_atanf
for single-precision floats.

To calculate the arc tangent of y / x, use SDL_atan2 .

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

floating point value.

RETURN VALUE

Returns arc tangent of of x in radians, or 0 if x = 0 .

THREAD SAFETY

It is safe to call this function from any thread.

AVAILABILITY

This function is available since SDL 3.2.0.