Attachment 7744 Details for Bug 8983 – c program to show the rounding differences for other panels and modes

c program to show the rounding differences for other panels and modes

test.c (text/plain), 1.10 KB, created by Sascha Sommer on 2006-11-11 04:36:01 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Sascha Sommer

Created: 2006-11-11 04:36:01 UTC

Size: 1.10 KB

patch

obsolete

>#include <stdio.h>
>
>
>
>int main(){
>int panel_x[] = {1400,1280,1024};
>int panel_y[] = {1050,768,768};
>int xres[] = {1400,1280,1280,1024,800,640};
>int yres[] = {1050,960,768,768,600,480};
>int i,x;
>int num_panelsizes = sizeof(panel_x)/sizeof(panel_x[0]);
>int num_res = sizeof(xres)/sizeof(xres[0]);
>
>
>for(x=0;x<num_panelsizes;x++){
>printf("panel %ix%i\n",panel_x[x],panel_y[x]);
>for(i=0;i<sizeof(xres)/sizeof(xres[0]);i++){
>      if(xres[i] > panel_x[x])
>	continue;
>      if(yres[i] > panel_y[x])
>	continue;
>    
>
>       float hratio = (float)xres[i]/(float)panel_x[x];
>       float vratio = (float)yres[i]/(float)panel_y[x];
>
>
>
>       unsigned long h1 = ((unsigned long)(hratio * 4096 +
>                               0.5));
>       unsigned long h2 = ((unsigned long)(hratio * 4096 +
>                               0.0));
>       unsigned long v1 = ((unsigned long)(vratio * 4096 +
>                               0.5));
>       unsigned long v2 = ((unsigned long)(vratio * 4096 +
>                               0.0));
>
>	printf("%ix%i h: %i %i diff %i v: %i %i diff %i\n",xres[i],yres[i],h1,h2,h1-h2,v1,v2,v1-v2);
>
>}
>}
>
>	return 0;
>}
>

Actions: View

Attachments on bug 8983: 7743 | 7744

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.