List of usage examples for java.lang Math log1p
public static double log1p(double x)
From source file:org.eclipse.dataset.Maths.java
/** * log1p - evaluate the logarithm function of 1 plus on each element of the dataset * @param a/*from w ww . j a va 2s.c om*/ * @param o output can be null - in which case, a new dataset is created * @return dataset */ public static Dataset log1p(final Object a, final Dataset o) { final Dataset da = a instanceof Dataset ? (Dataset) a : DatasetFactory.createFromObject(a); final SingleInputBroadcastIterator it = new SingleInputBroadcastIterator(da, o, true); final Dataset result = it.getOutput(); final int is = result.getElementsPerItem(); final int dt = result.getDtype(); switch (dt) { case Dataset.INT8: final byte[] oi8data = ((ByteDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); oi8data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); oi8data[it.oIndex] = ox; } } break; case Dataset.INT16: final short[] oi16data = ((ShortDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); oi16data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); oi16data[it.oIndex] = ox; } } break; case Dataset.INT64: final long[] oi64data = ((LongDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); oi64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); oi64data[it.oIndex] = ox; } } break; case Dataset.INT32: final int[] oi32data = ((IntegerDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); oi32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); oi32data[it.oIndex] = ox; } } break; case Dataset.ARRAYINT8: final byte[] oai8data = ((CompoundByteDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai8data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai8data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT16: final short[] oai16data = ((CompoundShortDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai16data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai16data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT64: final long[] oai64data = ((CompoundLongDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai64data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT32: final int[] oai32data = ((CompoundIntegerDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai32data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex + j] = ox; } } } } break; case Dataset.FLOAT32: final float[] of32data = ((FloatDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); of32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); of32data[it.oIndex] = ox; } } break; case Dataset.FLOAT64: final double[] of64data = ((DoubleDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); of64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); of64data[it.oIndex] = ox; } } break; case Dataset.ARRAYFLOAT32: final float[] oaf32data = ((CompoundFloatDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf32data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYFLOAT64: final double[] oaf64data = ((CompoundDoubleDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf64data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex + j] = ox; } } } } break; case Dataset.COMPLEX64: final float[] oc64data = ((ComplexFloatDataset) result).data; if (da.getElementsPerItem() == 1) { final double iy = 0; while (it.hasNext()) { final double ix = it.aDouble; float ox; float oy; ox = (float) (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (float) (Math.atan2(iy, ix + 1)); oc64data[it.oIndex] = ox; oc64data[it.oIndex + 1] = oy; } } else { while (it.hasNext()) { final double ix = it.aDouble; final double iy = da.getElementDoubleAbs(it.aIndex + 1); float ox; float oy; ox = (float) (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (float) (Math.atan2(iy, ix + 1)); oc64data[it.oIndex] = ox; oc64data[it.oIndex + 1] = oy; } } break; case Dataset.COMPLEX128: final double[] oc128data = ((ComplexDoubleDataset) result).data; if (da.getElementsPerItem() == 1) { final double iy = 0; while (it.hasNext()) { final double ix = it.aDouble; double ox; double oy; ox = (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (Math.atan2(iy, ix + 1)); oc128data[it.oIndex] = ox; oc128data[it.oIndex + 1] = oy; } } else { while (it.hasNext()) { final double ix = it.aDouble; final double iy = da.getElementDoubleAbs(it.aIndex + 1); double ox; double oy; ox = (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (Math.atan2(iy, ix + 1)); oc128data[it.oIndex] = ox; oc128data[it.oIndex + 1] = oy; } } break; default: throw new IllegalArgumentException( "log1p supports integer, compound integer, real, compound real, complex datasets only"); } addFunctionName(result, "log1p"); return result; }
From source file:org.eclipse.january.dataset.GeneratedMaths.java
/** * log1p - evaluate the logarithm function of 1 plus on each element of the dataset * @param a//w ww. j a va 2 s . co m * @param o output can be null - in which case, a new dataset is created * @return dataset */ public static Dataset log1p(final Object a, final Dataset o) { final Dataset da = a instanceof Dataset ? (Dataset) a : DatasetFactory.createFromObject(a); final SingleInputBroadcastIterator it = new SingleInputBroadcastIterator(da, o, true); final Dataset result = it.getOutput(); final int is = result.getElementsPerItem(); final int as = da.getElementsPerItem(); final int dt = result.getDType(); switch (dt) { case Dataset.INT8: final byte[] oi8data = ((ByteDataset) result).getData(); if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); oi8data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); oi8data[it.oIndex] = ox; } } break; case Dataset.INT16: final short[] oi16data = ((ShortDataset) result).getData(); if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); oi16data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); oi16data[it.oIndex] = ox; } } break; case Dataset.INT64: final long[] oi64data = ((LongDataset) result).getData(); if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); oi64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); oi64data[it.oIndex] = ox; } } break; case Dataset.INT32: final int[] oi32data = ((IntegerDataset) result).getData(); if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); oi32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); oi32data[it.oIndex] = ox; } } break; case Dataset.ARRAYINT8: final byte[] oai8data = ((CompoundByteDataset) result).getData(); if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex] = ox; } } } else if (as == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai8data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai8data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT16: final short[] oai16data = ((CompoundShortDataset) result).getData(); if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex] = ox; } } } else if (as == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai16data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai16data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT64: final long[] oai64data = ((CompoundLongDataset) result).getData(); if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex] = ox; } } } else if (as == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai64data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT32: final int[] oai32data = ((CompoundIntegerDataset) result).getData(); if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex] = ox; } } } else if (as == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai32data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex + j] = ox; } } } } break; case Dataset.FLOAT32: final float[] of32data = ((FloatDataset) result).getData(); if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); of32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); of32data[it.oIndex] = ox; } } break; case Dataset.FLOAT64: final double[] of64data = ((DoubleDataset) result).getData(); if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); of64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); of64data[it.oIndex] = ox; } } break; case Dataset.ARRAYFLOAT32: final float[] oaf32data = ((CompoundFloatDataset) result).getData(); if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex] = ox; } } } else if (as == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf32data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYFLOAT64: final double[] oaf64data = ((CompoundDoubleDataset) result).getData(); if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex] = ox; } } } else if (as == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf64data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex + j] = ox; } } } } break; case Dataset.COMPLEX64: final float[] oc64data = ((ComplexFloatDataset) result).getData(); if (as == 1) { final double iy = 0; while (it.hasNext()) { final double ix = it.aDouble; float ox; float oy; ox = (float) (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (float) (Math.atan2(iy, ix + 1)); oc64data[it.oIndex] = ox; oc64data[it.oIndex + 1] = oy; } } else { while (it.hasNext()) { final double ix = it.aDouble; final double iy = da.getElementDoubleAbs(it.aIndex + 1); float ox; float oy; ox = (float) (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (float) (Math.atan2(iy, ix + 1)); oc64data[it.oIndex] = ox; oc64data[it.oIndex + 1] = oy; } } break; case Dataset.COMPLEX128: final double[] oc128data = ((ComplexDoubleDataset) result).getData(); if (as == 1) { final double iy = 0; while (it.hasNext()) { final double ix = it.aDouble; double ox; double oy; ox = (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (Math.atan2(iy, ix + 1)); oc128data[it.oIndex] = ox; oc128data[it.oIndex + 1] = oy; } } else { while (it.hasNext()) { final double ix = it.aDouble; final double iy = da.getElementDoubleAbs(it.aIndex + 1); double ox; double oy; ox = (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (Math.atan2(iy, ix + 1)); oc128data[it.oIndex] = ox; oc128data[it.oIndex + 1] = oy; } } break; default: throw new IllegalArgumentException( "log1p supports integer, compound integer, real, compound real, complex datasets only"); } addFunctionName(result, "log1p"); return result; }
From source file:org.eclipse.january.dataset.Maths.java
/** * log1p - evaluate the logarithm function of 1 plus on each element of the dataset * @param a/*from w w w . ja va 2s .c o m*/ * @param o output can be null - in which case, a new dataset is created * @return dataset */ public static Dataset log1p(final Object a, final Dataset o) { final Dataset da = a instanceof Dataset ? (Dataset) a : DatasetFactory.createFromObject(a); final SingleInputBroadcastIterator it = new SingleInputBroadcastIterator(da, o, true); final Dataset result = it.getOutput(); final int is = result.getElementsPerItem(); final int dt = result.getDType(); switch (dt) { case Dataset.INT8: final byte[] oi8data = ((ByteDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); oi8data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); oi8data[it.oIndex] = ox; } } break; case Dataset.INT16: final short[] oi16data = ((ShortDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); oi16data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); oi16data[it.oIndex] = ox; } } break; case Dataset.INT64: final long[] oi64data = ((LongDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); oi64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); oi64data[it.oIndex] = ox; } } break; case Dataset.INT32: final int[] oi32data = ((IntegerDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); oi32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); oi32data[it.oIndex] = ox; } } break; case Dataset.ARRAYINT8: final byte[] oai8data = ((CompoundByteDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; byte ox; ox = (byte) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai8data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; byte ox; ox = (byte) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai8data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); byte ox; ox = (byte) toLong(Math.log1p(ix)); oai8data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT16: final short[] oai16data = ((CompoundShortDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; short ox; ox = (short) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai16data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; short ox; ox = (short) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai16data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); short ox; ox = (short) toLong(Math.log1p(ix)); oai16data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT64: final long[] oai64data = ((CompoundLongDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; long ox; ox = toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; long ox; ox = toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai64data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); long ox; ox = toLong(Math.log1p(ix)); oai64data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYINT32: final int[] oai32data = ((CompoundIntegerDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; int ox; ox = (int) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; int ox; ox = (int) toLong(Math.log1p(ix)); for (int j = 0; j < is; j++) { oai32data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); int ox; ox = (int) toLong(Math.log1p(ix)); oai32data[it.oIndex + j] = ox; } } } } break; case Dataset.FLOAT32: final float[] of32data = ((FloatDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); of32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); of32data[it.oIndex] = ox; } } break; case Dataset.FLOAT64: final double[] of64data = ((DoubleDataset) result).data; if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); of64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); of64data[it.oIndex] = ox; } } break; case Dataset.ARRAYFLOAT32: final float[] oaf32data = ((CompoundFloatDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; float ox; ox = (float) (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; float ox; ox = (float) (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf32data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); float ox; ox = (float) (Math.log1p(ix)); oaf32data[it.oIndex + j] = ox; } } } } break; case Dataset.ARRAYFLOAT64: final double[] oaf64data = ((CompoundDoubleDataset) result).data; if (is == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex] = ox; } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex] = ox; } } } else if (da.getElementsPerItem() == 1) { if (it.isOutputDouble()) { while (it.hasNext()) { final double ix = it.aDouble; double ox; ox = (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { final long ix = it.aLong; double ox; ox = (Math.log1p(ix)); for (int j = 0; j < is; j++) { oaf64data[it.oIndex + j] = ox; } } } } else { if (it.isOutputDouble()) { while (it.hasNext()) { for (int j = 0; j < is; j++) { final double ix = da.getElementDoubleAbs(it.aIndex + j); double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex + j] = ox; } } } else { while (it.hasNext()) { for (int j = 0; j < is; j++) { final long ix = da.getElementLongAbs(it.aIndex + j); double ox; ox = (Math.log1p(ix)); oaf64data[it.oIndex + j] = ox; } } } } break; case Dataset.COMPLEX64: final float[] oc64data = ((ComplexFloatDataset) result).data; if (da.getElementsPerItem() == 1) { final double iy = 0; while (it.hasNext()) { final double ix = it.aDouble; float ox; float oy; ox = (float) (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (float) (Math.atan2(iy, ix + 1)); oc64data[it.oIndex] = ox; oc64data[it.oIndex + 1] = oy; } } else { while (it.hasNext()) { final double ix = it.aDouble; final double iy = da.getElementDoubleAbs(it.aIndex + 1); float ox; float oy; ox = (float) (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (float) (Math.atan2(iy, ix + 1)); oc64data[it.oIndex] = ox; oc64data[it.oIndex + 1] = oy; } } break; case Dataset.COMPLEX128: final double[] oc128data = ((ComplexDoubleDataset) result).data; if (da.getElementsPerItem() == 1) { final double iy = 0; while (it.hasNext()) { final double ix = it.aDouble; double ox; double oy; ox = (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (Math.atan2(iy, ix + 1)); oc128data[it.oIndex] = ox; oc128data[it.oIndex + 1] = oy; } } else { while (it.hasNext()) { final double ix = it.aDouble; final double iy = da.getElementDoubleAbs(it.aIndex + 1); double ox; double oy; ox = (0.5 * Math.log1p(ix * ix + 2. * ix + iy * iy)); oy = (Math.atan2(iy, ix + 1)); oc128data[it.oIndex] = ox; oc128data[it.oIndex + 1] = oy; } } break; default: throw new IllegalArgumentException( "log1p supports integer, compound integer, real, compound real, complex datasets only"); } addFunctionName(result, "log1p"); return result; }
From source file:org.esa.beam.util.math.FastMathPerformance.java
public void testLog1p() { System.gc();/*from w ww. j a v a 2 s .c om*/ double x = 0; long time = System.nanoTime(); for (int i = 0; i < RUNS; i++) x += StrictMath.log1p(Math.PI + i/* 1.0 + i/1e9 */); long strictMath = System.nanoTime() - time; System.gc(); double y = 0; time = System.nanoTime(); for (int i = 0; i < RUNS; i++) y += FastMath.log1p(Math.PI + i/* 1.0 + i/1e9 */); long fastTime = System.nanoTime() - time; System.gc(); double z = 0; time = System.nanoTime(); for (int i = 0; i < RUNS; i++) z += Math.log1p(Math.PI + i/* 1.0 + i/1e9 */); long mathTime = System.nanoTime() - time; report("log1p", x + y + z, strictMath, fastTime, mathTime); }
From source file:org.nuxeo.ecm.platform.categorization.categorizer.tfidf.TfIdfCategorizer.java
protected float[] getIdf() { if (cachedIdf == null) { float[] idf = new float[allTermCounts.length]; for (int i = 0; i < allTermCounts.length; i++) { if (allTermCounts[i] == 0) { idf[i] = 0;/* w ww . j ava 2 s. c o m*/ } else { idf[i] = (float) Math.log1p(((float) totalTermCount) / allTermCounts[i]); } } // atomic update to ensure thread-safeness cachedIdf = idf; } return cachedIdf; }
From source file:org.photovault.dcraw.RawImage.java
/** * Calculate the auto exposure settings/*from w ww.j a v a 2 s . co m*/ */ private void doAutoExpose() { autoExposeRequested = false; // Create a histogram if image luminance double lumMat[][] = { { 0.27, 0.67, 0.06, 0.0 } }; RenderingHints nonCachedHints = new RenderingHints(JAI.KEY_TILE_CACHE, null); RenderedOp lumImg = BandCombineDescriptor.create(rawImage, lumMat, nonCachedHints); int numBins[] = { 65536 }; double lowVal[] = { 0. }; double highVal[] = { 65535. }; RenderedOp histOp = HistogramDescriptor.create(lumImg, null, Integer.valueOf(1), Integer.valueOf(1), numBins, lowVal, highVal, null); Histogram hist = (Histogram) histOp.getProperty("histogram"); int[][] histBins = hist.getBins(); double logSum = 0.0; int pixelCount = 0; for (int n = 0; n < histBins[0].length; n++) { double l = Math.log1p(n); logSum += l * histBins[0][n]; pixelCount += histBins[0][n]; } double dw = 65536.; if (pixelCount > 0) { logAvg = Math.exp(logSum / pixelCount); // Set the average to 18% grey dw = logAvg / 0.18; } // Set the white point so that 1 % of pixels will be white int whitePixels = pixelCount / 100; int brighterPixels = 0; int bin = 0xffff; for (; bin > 0; bin--) { brighterPixels += histBins[0][bin]; if (brighterPixels >= whitePixels) break; } double hcRatio = ((double) bin) / dw; white = (int) dw; highlightCompression = Math.log(hcRatio) / Math.log(2.0); highlightCompression = Math.min(MAX_AUTO_HLIGHT_COMP, Math.max(MIN_AUTO_HLIGHT_COMP, highlightCompression)); }
From source file:org.renjin.MathExt.java
public static double log1p(double x) { return Math.log1p(x); }
From source file:org.renjin.primitives.MathExt.java
@Deferrable @Builtin @DataParallel public static double log1p(double x) { return Math.log1p(x); }
From source file:org.renjin.primitives.MathGroup.java
@Deferrable @Builtin/*from w w w . j av a2s .co m*/ @DataParallel(value = PreserveAttributeStyle.ALL, passNA = true) public static double log1p(double x) { return Math.log1p(x); }
From source file:org.renjin.primitives.random.Beta.java
public static double pnbeta_raw(double x, double o_x, double a, double b, double ncp) { /* o_x == 1 - x but maybe more accurate */ /* change errmax and itrmax if desired; * original (AS 226, R84) had (errmax; itrmax) = (1e-6; 100) */ final double errmax = 1.0e-9; final int itrmax = 10000; /* 100 is not enough for pf(ncp=200) see PR#11277 */ double[] temp = new double[1]; double[] tmp_c = new double[1]; int[] ierr = new int[1]; double a0, ax, lbeta, c, errbd, x0; int j;//from ww w . j av a 2 s .c om double ans, gx, q, sumq; if (ncp < 0. || a <= 0. || b <= 0.) { return DoubleVector.NaN; } if (x < 0. || o_x > 1. || (x == 0. && o_x == 1.)) { return 0.; } if (x > 1. || o_x < 0. || (x == 1. && o_x == 0.)) { return 1.; } c = ncp / 2.; /* initialize the series */ x0 = Math.floor(Math.max(c - 7. * Math.sqrt(c), 0.)); a0 = a + x0; lbeta = org.apache.commons.math.special.Gamma.logGamma(a0) + org.apache.commons.math.special.Gamma.logGamma(b) - org.apache.commons.math.special.Gamma.logGamma(a0 + b); /* temp = pbeta_raw(x, a0, b, TRUE, FALSE), but using (x, o_x): */ Utils.bratio(a0, b, x, o_x, temp, tmp_c, ierr, false); gx = Math.exp(a0 * Math.log(x) + b * (x < .5 ? Math.log1p(-x) : Math.log(o_x)) - lbeta - Math.log(a0)); if (a0 > a) { q = Math.exp(-c + x0 * Math.log(c) - org.apache.commons.math.special.Gamma.logGamma(x0 + 1.)); } else { q = Math.exp(-c); } sumq = 1. - q; ans = ax = q * temp[0]; /* recurse over subsequent terms until convergence is achieved */ j = (int) x0; do { j++; temp[0] -= gx; gx *= x * (a + b + j - 1.) / (a + j); q *= c / j; sumq -= q; ax = temp[0] * q; ans += ax; errbd = (temp[0] - gx) * sumq; } while (errbd > errmax && j < itrmax + x0); if (errbd > errmax) { //ML_ERROR(ME_PRECISION, "pnbeta"); } if (j >= itrmax + x0) { //ML_ERROR(ME_NOCONV, "pnbeta"); } return ans; }