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


Scale x by an integer power of two.

Header File

Defined in <SDL3/SDL_stdinc.h>


float SDL_scalbnf(float x, int n);

Function Parameters

float x floating point value to be scaled.
int n integer exponent.

Return Value

(float) Returns x * 2^n.


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 single-precision floating point values, use SDL_scalbn for double-precision floats.

Thread Safety

It is safe to call this function from any thread.


This function is available since SDL 3.0.0.

See Also

CategoryAPI, CategoryAPIFunction, CategoryStdinc

[ edit | delete | history | feedback | raw ]

[ front page | index | search | recent changes | git repo | offline html ]

All wiki content is licensed under Creative Commons Attribution 4.0 International (CC BY 4.0).
Wiki powered by ghwikipp.