Re: [xmlvm-users] Maths

[Joseph R. F. <ruk...@op...>]

Ok I added these to java_lang_Math.m
+ (float) pow___float: (float) x : (float) y
{
     return pow(x, y);
}

+ (double) pow___double: (double) x : (double) y
{
     return pow(x, y);
}
+ (float) max___float_float :(float) x :(float) y
{
	return x < y ? y : x;
}

+ (double) max___double_double :(double) x :(double) y
{
	return x < y ? y : x;
}

+ (int) max___int_int :(int) x :(int) y
{
	return x < y ? y : x;
}

+ (float) min___float_float :(float) x :(float) y
{
	return x >  y ? y : x;
}

+ (double) min___double_double :(double) x :(double) y
{
	return x >  y ? y : x;
}

+ (int) min___int_int :(int) x :(int) y
{
	return x >  y ? y : x;
}

and corresponding prototypes to the header file.

However this android code:
public class ImageViewer extends Activity {
     /** Called when the activity is first created. */
     @SuppressWarnings("deprecation")
	@Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

         AbsoluteLayout layout = new AbsoluteLayout(this);
         layout.setLayoutParams(new LayoutParams 
(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
         ImageView viewer = new ImageView(this);
         viewer.setImageResource(R.drawable.cat);
         layout.addView(viewer, new AbsoluteLayout.LayoutParams 
(AbsoluteLayout.LayoutParams.WRAP_CONTENT,  
AbsoluteLayout.LayoutParams.WRAP_CONTENT, 0, 100));
         TextView text = new TextView(this);
         layout.addView(text, new AbsoluteLayout.LayoutParams 
(AbsoluteLayout.LayoutParams.WRAP_CONTENT,  
AbsoluteLayout.LayoutParams.WRAP_CONTENT, 0, 0));
         setContentView(layout);

         Math.pow(1.5,2*5);
         Math.min(1.2, 3.0);
         Math.max(3.4, 4.5);
     }
}

However cross compiling to iphone give me this error message:
com_home_imageviewer_ImageViewer.m:131: warning: ‘java_lang_Math’ may  
not respond to ‘+pow___double_double::’
com_home_imageviewer_ImageViewer.m:131: warning: (Messages without a  
matching method signature
com_home_imageviewer_ImageViewer.m:131: warning: will be assumed to  
return ‘id’ and accept
com_home_imageviewer_ImageViewer.m:131: warning: ‘...’ as arguments.)
com_home_imageviewer_ImageViewer.m:131: error: incompatible types in  
assignment
com_home_imageviewer_ImageViewer.m:133: warning: implicit declaration  
of function ‘ERROR’


I am pretty confident it is due to the Math functions I am calling at  
the end of my activity. Any idea what I am doing wrong?


On 09/10/2009, at 2:48 AM, Joseph Rukshan Fonseka wrote:

> Ok I tried to convert an android application to iphone and noticed
> quite a few of the Maths functions don't compile such as
>
> Math.max()
> Math.min()
> Math.pow()
>
> I am guessing they aren't supported yet? I would like to extend the
> Maths library to have these functions. Which file should I be looking
> at to add these?
>
> Regards,
> Rukshan Fonseka.
>
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