Copy the sign of one floating-point value to another.
Defined in <SDL3/SDL_stdinc.h>
double SDL_copysign(double x, double y);| double | x | floating point value to use as the magnitude. |
| double | y | floating point value to use as the sign. |
(double) Returns the floating point value with the sign of y and the magnitude of x.
The definition of copysign is that copysign(x, y) = abs(x) * sign(y).
Domain: -INF <= x <= INF, -INF <= y <= f
Range: -INF <= z <= INF
This function operates on double-precision floating point values, use SDL_copysignf for single-precision floats.
It is safe to call this function from any thread.
This function is available since SDL 3.1.3.