The following code seems to corrupt Float.isNaN() logic on an old Android device.
The device: LG-GT540 / Android2.3.7

int a = 2;
float b = a;
Log.d("yo", "1, Float.isNaN=" + Float.isNaN(Float.NaN));
boolean test = (b == 2);
Log.d("yo", "2, Float.isNaN=" + Float.isNaN(Float.NaN));

This makes Float.isNaN(Float.NaN) to return "false" which is wrong.

Do you know why?

Is it a JVM error?

On all th

I have a KochSnowFlake class and it's not printing out what it should and I don't know know why. I think my math is correct but I could be mistaken.

public class Calculator {

float[] countPerSec = new float[600];
float[] finishedArray = new float[600];
float[] omegaArray = new float[600];
float[] sortedArray = new float[600];
int radius = 55;
float windSpeedArray[] = new float[600];
float windspeedAvg = 0;
float[] windspeedMinMax = new float[2];
int timerArrayCounter = 0;

int sensorCountValue = 20; //**count per second returned by the sen

Hi IVgot the the cpp file where i Initialize.

i am using OpenCV to compute some algorimths, but now i want to convert its into java code, in java code, my program has a method:

public native float[] computeFeatures(ArrayList<float[]> listData);

now, i am using javah to generate header file and in jni, this method is look like:

JNIEXPORT jfloatArray JNICALL Java_khoa_cspdemo_CSPTest_computeFeatures (JNIEnv *, jobject, jobject);

Ho

I've drawn a grid at z=0 in OpenGL 2.0 ES, and just want to convert touch inputs to x/y coordinates on that plane.

I am trying to fill the resize function that comes with Libgdx to fit all of the android screens.

I have been searching for a solution for about an hour and a half but have none.

#include<stdio.h>
#include<stdlib.h>
#include<math.h>

float summation(float g);
int main(int argc,int *argv[])
{
srand(12345);
float z;
float a=0.2,y=0.0;
int i;
for(i=0;i<5;i++)
{
float b=((float)rand()/(float)(RAND_MAX))*a;
printf("%f\n",b);

z=summation(b);
}
printf("summation:\n%f\n",z);
return 0;
}
//==========================================

I am taking a look at large matrix multiplication and ran the following experiment to form a baseline test:

Randomly generate two 4096x4096 matrixes X, Y from std normal (0 mean, 1 stddev).
Z = X*Y
Sum elements of Z (to make sure they are accessed) and output.

Here is the nieve C++ implementatation:

#include <iostream>
#include <algorithm>

using namespace std;

int main()
{
c