(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)

SDL_scalbn

Scale x by an integer power of two.

Header File

Defined in <SDL3/SDL_stdinc.h>

Syntax

double SDL_scalbn(double x, int n);

Function Parameters

x floating point value to be scaled
n integer exponent

Return Value

Returns x * 2^n

Remarks

Multiplies x by the nth power of the floating point radix (always 2).

Domain: -INF <= x <= INF, n integer

Range: -INF <= y <= INF

This function operates on double-precision floating point values, use SDL_scalbnf for single-precision floats.

Version

This function is available since SDL 3.0.0.

See Also

CategoryAPI, CategoryAPIFunction, CategoryStdinc