Re: [xmlvm-users] Maths

[Wolfgang K. <wol...@xm...>]

Did you run the ant script to rebuild the library jars after
implementing these Math methods? If yes - please send me a patch file
with your implementation so that it is a little bit easier for me to add
things to my workspace. Then I will have a look at what's going wrong
and come back to as soon as possible.

-- Wolfgang


Joseph Rukshan Fonseka wrote:
> 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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