My FPS counter

[bitshifter]

My FPS counter is simple and flexible

void SCR_DrawFPS (void)
{
static char str[8] = "";
static float elapse = 0;
static int frames = 0;
static int x = 0;

if (!scr_drawfps->value)
return;

frames += 1;
elapse += cls.frametime;

if (elapse >= scr_drawfps->value)
{
int cells;

cells = sprintf(str,"%4.0ffps",1/(elapse/frames)) + 1;
x = viddef.width - (cells * 8);

frames = 0;
elapse = 0;
}

DrawString(x,4,str);
}

Features:
1) Variable update frequency.
2) Averaged counts (no snapshots).
3) Right justifies on screen.

Ramble:
1) Compiler mileage may vary. (ok with lcc)
2) Suggested update value: 0.1 ~ 1.0 (0 = off)
3) Not very optimal, but easy to read.
4) Assumes 8 pixel glyph width.

Should i make full installation tutorial for this?