/**
* constructs the tables from the static parameters
*/
public static void constructTables()
{
tables = new SinCosTable[numTables];
Console.WriteLine("constructing tables");
for (int i = 0; i < numTables; i++)
{
// well... basic lerp
float precision = i*1f/numTables*(leastPreciseTable - mostPreciseTable)
+ mostPreciseTable;
tables[i] = new SinCosTable(precision);
}
}
private static long speedTest(SinCosTable table, int numIterations, int numTrials)
{
long startTime, endTime;
long totalTime = 0;
float i, j;
float k = 0;
float jstep = MathUtils.TWOPI/numIterations;
for (i = 0; i < numTrials; i++)
{
startTime = Stopwatch.GetTimestamp();
for (j = 0; j < MathUtils.TWOPI; j += jstep)
{
k += table.sin(j);
}
endTime = Stopwatch.GetTimestamp();
totalTime += endTime - startTime;
}
i += k;
return numIterations*numTrials*1000000000L/(totalTime);
}
private static double accuracyTest(SinCosTable table, int iterations)
{
double totalDiff = 0f, diff = 0f;
for (int i = 0; i < iterations; i++)
{
float querry = (float) _random.NextDouble()*MathUtils.TWOPI;
diff = MathUtils.abs((float) System.Math.Sin(querry) - table.sin(querry));
totalDiff += diff;
}
totalDiff /= iterations;
return totalDiff;
}
