bundles/org.simantics.trend/example/org/simantics/trend/TestDecimalFormat.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.trend;
  13
  14 import java.math.BigDecimal;
  15 import java.text.Format;
  16 import java.text.NumberFormat;
  17
  18 import org.simantics.utils.format.FormattingUtils;
  19 import org.simantics.utils.format.ValueFormat;
  20
  21 public class TestDecimalFormat {
  22
  23         public static void main(String[] args) {
  24
  25
  26                 NumberFormat f = ValueFormat.Scientific.format;
  27                 double x = 0.00001234567890;
  28                 for (int i=-10; i<10; i++) {
  29                         System.out.println(f.format(x));
  30                         x *= 10.;
  31                 }
  32
  33                 x = 6.00;
  34                 for (int i=0; i<10; i++) {
  35                         x+= 0.0000000000001;
  36                         System.out.println(x);
  37                 }
  38
  39                 BigDecimal dec = new BigDecimal(0);
  40                 BigDecimal augend = new BigDecimal(String.valueOf(0.2));
  41                 System.out.println(new BigDecimal(0.2));
  42                 System.out.println(new BigDecimal(String.valueOf(0.2)));
  43                 for (int i=0; i<1000000; i++) {
  44                         dec = dec.add(augend);
  45                         String s1 = dec.toString();
  46                         String s2 = Double.toString(dec.doubleValue());
  47                         if (!s1.equals(s2)) {
  48                                 System.out.println(s1 + " vs. " + s2);
  49                         }
  50                 }
  51
  52                 Format format = FormattingUtils.significantDigitFormat(7);
  53
  54                 System.out.println(format.format(123456789012345.1234));
  55                 System.out.println(format.format(12345678901.23451234));
  56                 System.out.println(format.format(1234567890.123451234));
  57                 System.out.println(format.format(123456789.0123451234));
  58                 System.out.println(format.format(12345678.90123451234));
  59                 System.out.println(format.format(10000123.4));
  60                 System.out.println(format.format(9999999.99));
  61                 System.out.println(format.format(9999999.9));
  62                 System.out.println(format.format(9999999));
  63                 System.out.println(format.format(1234567.890123451234));
  64                 System.out.println(format.format(123456.7890123451234));
  65                 System.out.println(format.format(12345.67890123451234));
  66                 System.out.println(format.format(1234.567890123451234));
  67                 System.out.println(format.format(123.4567890123451234));
  68                 System.out.println(format.format(12.34567890123451234));
  69                 System.out.println(format.format(1.234567890123451234));
  70                 System.out.println(format.format(0.1234567890123451234));
  71                 System.out.println(format.format(0.1111111));
  72                 System.out.println(format.format(0.1000001));
  73                 System.out.println(format.format(0.09999999999));
  74                 System.out.println(format.format(0.0999999999));
  75                 System.out.println(format.format(0.099999999));
  76                 System.out.println(format.format(0.09999999));
  77                 System.out.println(format.format(0.0999999));
  78                 System.out.println(format.format(0.01234567890123451234));
  79                 System.out.println(format.format(0.001234567890123451234));
  80                 System.out.println(format.format(0.0001234567890123451234));
  81                 System.out.println(format.format(0.00001234567890123451234));
  82                 System.out.println(format.format(0.000001234567890123451234));
  83                 System.out.println(format.format(0.0000001234567890123451234));
  84                 System.out.println(format.format(0.00000001234567890123451234));
  85                 System.out.println(format.format(0.000000001234567890123451234));
  86
  87                 System.out.println(format.format(10));
  88                 System.out.println(format.format(20L));
  89                 System.out.println(format.format(-0));
  90                 System.out.println(format.format(-1L));
  91
  92         }
  93
  94 }