コード例 #1
0
ファイル: ADate.java プロジェクト: jefferya/basex
 /**
  * Returns a day count for the specified years, months and days. All values must be specified in
  * their internal representation (undefined values are supported, too). Algorithm is derived from
  * J R Stockton (http://www.merlyn.demon.co.uk/daycount.htm).
  *
  * @param year year
  * @param month month
  * @param day days
  * @return days
  */
 private static BigDecimal days(final long year, final int month, final int day) {
   final long y = year - (month < 2 ? 1 : 0);
   final int m = month + (month < 2 ? 13 : 1);
   final int d = day + 1;
   return BD365
       .multiply(BigDecimal.valueOf(y))
       .add(BigDecimal.valueOf(y / 4 - y / 100 + y / 400 - 92 + d + (153 * m - 2) / 5));
 }
コード例 #2
0
ファイル: Symbol.java プロジェクト: tony200910041/TinyCalc
 public static ArrayList<Symbol> toSymbols(String expression) {
   ArrayList<Symbol> symbols = new ArrayList<>();
   for (int i = 0; i < expression.length(); i++) {
     char c = expression.charAt(i);
     if (isBracket(c)) {
       // bracket
       symbols.add(new Symbol(c));
     } else if (c == ',') {
       symbols.add(new Symbol(c));
     } else if (isOperator(c)) {
       if (c == '-') {
         if (i == 0) {
           // must be first +/-, so add 0
           symbols.add(new Symbol(BigDecimal.valueOf(0)));
           symbols.add(new Symbol(c));
         } else {
           char previous = expression.charAt(i - 1);
           if ((previous == ')') || isNumber(String.valueOf(previous))) {
             // must be "minus"
             // e.g. sin(3)-5, 100-5,
             symbols.add(new Symbol(c));
           } else if ((previous == '(') || (previous == ',')) {
             // must be "negative"
             // e.g. (-3+5)/2
             symbols.add(new Symbol(BigDecimal.valueOf(0)));
             symbols.add(new Symbol(c));
           } else if ((previous == '*') || (previous == '/') || (previous == '^')) {
             int end = Symbol.getNumberEndAt(i + 1, expression);
             symbols.add(new Symbol(new BigDecimal(expression.substring(i, end))));
             i = end - 1;
           }
         }
       } else {
         symbols.add(new Symbol(c));
       }
     } else if (Character.isLetter(c)) {
       // function
       int end = Symbol.getFunctionEndAt(i, expression);
       symbols.add(new Symbol(expression.substring(i, end)));
       i = end - 1;
     } else if (Character.isDigit(c)) {
       int end = Symbol.getNumberEndAt(i, expression);
       String number = expression.substring(i, end);
       symbols.add(new Symbol(new BigDecimal(number)));
       i = end - 1;
     }
   }
   return symbols;
 }
コード例 #3
0
ファイル: ADate.java プロジェクト: jefferya/basex
 /**
  * Returns the date in seconds.
  *
  * @return seconds
  */
 final BigDecimal seconds() {
   int z = tz;
   if (z == Short.MAX_VALUE) {
     // [CG] XQuery, DateTime: may be removed
     final long n = System.currentTimeMillis();
     z = Calendar.getInstance().getTimeZone().getOffset(n) / 60000;
   }
   return (sec == null ? BigDecimal.ZERO : sec)
       .add(BigDecimal.valueOf(Math.max(0, hou) * 3600 + Math.max(0, min) * 60 - z * 60));
 }
コード例 #4
0
ファイル: ADate.java プロジェクト: jefferya/basex
 /**
  * Converts a day count into year, month and day components. Algorithm is derived from J R
  * Stockton (http://www.merlyn.demon.co.uk/daycount.htm).
  *
  * @param days day count
  * @return result array
  */
 private static long[] ymd(final BigDecimal days) {
   BigDecimal d = days;
   BigDecimal t =
       d.add(BD36525).multiply(BD4).divideToIntegralValue(BD146097).subtract(BigDecimal.ONE);
   BigDecimal y = BD100.multiply(t);
   d = d.subtract(BD36524.multiply(t).add(t.divideToIntegralValue(BD4)));
   t = d.add(BD366).multiply(BD4).divideToIntegralValue(BD1461).subtract(BigDecimal.ONE);
   y = y.add(t);
   d = d.subtract(BD365.multiply(t).add(t.divideToIntegralValue(BD4)));
   final BigDecimal m = BD5.multiply(d).add(BD2).divideToIntegralValue(BD153);
   d = d.subtract(BD153.multiply(m).add(BD2).divideToIntegralValue(BD5));
   long mm = m.longValue();
   if (mm > 9) {
     mm -= 12;
     y = y.add(BigDecimal.ONE);
   }
   return new long[] {y.subtract(BigDecimal.valueOf(ADD_NEG)).longValue(), mm + 2, d.longValue()};
 }
コード例 #5
0
ファイル: ADate.java プロジェクト: jefferya/basex
  /**
   * Adjusts the timezone.
   *
   * @param zone timezone
   * @param spec indicates if zone has been specified (may be {@code null})
   * @param ii input info
   * @throws QueryException query exception
   */
  void tz(final DTDur zone, final boolean spec, final InputInfo ii) throws QueryException {
    final short t;
    if (spec && zone == null) {
      t = Short.MAX_VALUE;
    } else {
      if (zone == null) {
        final Calendar c = Calendar.getInstance();
        t = (short) ((c.get(Calendar.ZONE_OFFSET) + c.get(Calendar.DST_OFFSET)) / 60000);
      } else {
        t = (short) (zone.min() + zone.hou() * 60);
        if (zone.sec().signum() != 0) throw ZONESEC_X.get(ii, zone);
        if (Math.abs(t) > 60 * 14 || zone.day() != 0) throw INVALZONE_X.get(ii, zone);
      }

      // change time if two competing time zones exist
      if (tz != Short.MAX_VALUE) add(BigDecimal.valueOf(60L * (t - tz)));
    }
    tz = t;
  }
コード例 #6
0
ファイル: ADate.java プロジェクト: jefferya/basex
  /**
   * Adds the specified dayTime duration.
   *
   * @param add value to be added
   */
  private void add(final BigDecimal add) {
    // normalized modulo: sc % 60  vs.  (-sc + sc % 60 + 60 + sc) % 60
    final BigDecimal sc = sec().add(add);
    sec =
        sc.signum() >= 0
            ? sc.remainder(BD60)
            : sc.negate().add(sc.remainder(BD60)).add(BD60).add(sc).remainder(BD60);

    final long mn = Math.max(min(), 0) + div(sc.longValue(), 60);
    min = (byte) mod(mn, 60);
    final long ho = Math.max(hou, 0) + div(mn, 60);
    hou = (byte) mod(ho, 24);
    final long da = div(ho, 24);

    final long[] ymd = ymd(days().add(BigDecimal.valueOf(da)));
    yea = ymd[0];
    mon = (byte) ymd[1];
    day = (byte) ymd[2];
  }
コード例 #7
0
ファイル: DataType.java プロジェクト: inexas/oak
  /**
   * Type converts values to other classes. For example an Integer can be converted to a Long.
   *
   * @param <T> Data Type.
   * @param value The value to be converted.
   * @param to The class to be converted to. Must be one of the Java types corresponding to the
   *     DataTypes.
   * @return The converted value.
   * @throws TypeMismatchException Thrown desired class is incompatible with the source class.
   * @throws OverflowException Thrown only on narrowing value conversions, e.g from a BigInteger to
   *     an Integer.
   */
  @Nullable
  public static <T> T convert(Object value, Class<?> to)
      throws TypeMismatchException, OverflowException {
    final Object result;

    if (value == null || value.getClass() == to) {
      result = value;
    } else {
      final Class<?> from = value.getClass();
      try {
        if (from == Integer.class) { // Integer -> ...
          if (to == Long.class) {
            result = new Long(((Number) value).longValue());
          } else if (to == BigInteger.class) {
            result = BigInteger.valueOf(((Number) value).intValue());
          } else if (to == Float.class) {
            result = new Float(((Number) value).floatValue());
          } else if (to == Double.class) {
            result = new Double(((Number) value).doubleValue());
          } else if (to == BigDecimal.class) {
            // Use intValue() to avoid precision errors
            result = new BigDecimal(((Number) value).intValue());
          } else {
            throw new TypeMismatchException(value.getClass(), to);
          }

        } else if (from == Long.class) { // Long -> ...
          if (to == Integer.class) {
            final long l = ((Long) value).longValue();
            if (l < Integer.MIN_VALUE || l > Integer.MAX_VALUE) {
              throw new OverflowException((Number) value, to);
            }
            result = new Integer((int) l);
          } else if (to == BigInteger.class) {
            result = BigInteger.valueOf(((Number) value).longValue());
          } else if (to == Float.class) {
            result = new Float(((Number) value).floatValue());
          } else if (to == Double.class) {
            result = new Double(((Number) value).doubleValue());
          } else if (to == BigDecimal.class) {
            // Use longValue() to avoid precision errors
            result = new BigDecimal(((Number) value).longValue());
          } else {
            throw new TypeMismatchException(value.getClass(), to);
          }

        } else if (from == BigInteger.class) { // BigInteger -> ...
          final BigInteger bi = (BigInteger) value;
          if (to == Integer.class) {
            result = new Integer(bi.intValueExact());
          } else if (to == Long.class) {
            result = new Long(bi.longValueExact());
          } else if (to == Float.class) {
            final float f1 = bi.floatValue();
            if (f1 == Float.NEGATIVE_INFINITY || f1 == Float.POSITIVE_INFINITY) {
              throw new OverflowException(bi, to);
            }
            result = new Float(f1);
          } else if (to == Double.class) {
            final double d = bi.doubleValue();
            if (d == Double.NEGATIVE_INFINITY || d == Double.POSITIVE_INFINITY) {
              throw new OverflowException(bi, to);
            }
            result = new Double(d);
          } else if (to == BigDecimal.class) {
            result = new BigDecimal(bi);
          } else {
            throw new TypeMismatchException(value.getClass(), to);
          }

        } else if (from == Float.class) { // Float -> ...
          final float fl = ((Float) value).floatValue();
          if (to == Integer.class) {
            if (fl < Integer.MIN_VALUE || fl > Integer.MAX_VALUE | fl % 1 > 0) {
              throw new OverflowException((Number) value, to);
            }
            result = new Integer((int) fl);
          } else if (to == Long.class) {
            if (fl < Long.MIN_VALUE || fl > Long.MAX_VALUE | fl % 1 > 0) {
              throw new OverflowException((Number) value, to);
            }
            result = new Long((long) fl);
          } else if (to == BigInteger.class) {
            if (fl % 1 > 0) {
              throw new OverflowException((Number) value, to);
            }
            final BigDecimal bd = BigDecimal.valueOf(fl);
            result = bd.toBigInteger();
          } else if (to == Double.class) {
            result = new Double(((Number) value).doubleValue());
          } else if (to == BigDecimal.class) {
            result = BigDecimal.valueOf(fl);
          } else {
            throw new TypeMismatchException(value.getClass(), to);
          }

        } else if (from == Double.class) { // Double -> ...
          final double d = ((Double) value).doubleValue();
          if (to == Integer.class) {
            if (d < Integer.MIN_VALUE || d > Integer.MAX_VALUE || d % 1 > 0) {
              throw new OverflowException((Number) value, to);
            }
            result = new Integer((int) d);
          } else if (to == Long.class) { // OK
            if (d < Long.MIN_VALUE || d > Long.MAX_VALUE || d % 1 > 0) {
              throw new OverflowException((Number) value, to);
            }
            result = new Long((int) d);
          } else if (to == BigInteger.class) { // OK
            if (d % 1 > 0) {
              throw new OverflowException((Number) value, to);
            }
            final BigDecimal bd = BigDecimal.valueOf(d);
            result = bd.toBigInteger();
          } else if (to == Float.class) { // OK
            if (d < -Float.MAX_VALUE || d > Float.MAX_VALUE) {
              throw new OverflowException((Number) value, to);
            }
            result = new Float((float) d);
          } else if (to == BigDecimal.class) { // OK
            result = BigDecimal.valueOf(d);
          } else {
            throw new TypeMismatchException(value.getClass(), to);
          }

        } else if (from == BigDecimal.class) { // BigDecimal -> ...
          final BigDecimal bd = (BigDecimal) value;
          if (to == Integer.class) { // OK
            result = new Integer(bd.intValueExact());
          } else if (to == Long.class) { // OK
            result = new Long(bd.longValueExact());
          } else if (to == BigInteger.class) { // OK
            // BigDecimal modulus
            final BigDecimal remainder = bd.remainder(BigDecimal.ONE);
            if (!remainder.equals(BigDecimal.ZERO)) {
              throw new OverflowException(bd, to);
            }
            result = bd.toBigInteger();
          } else if (to == Float.class) { // OK
            if (bd.compareTo(BigDecimal_MIN_FLOAT) < 0 || bd.compareTo(BigDecimal_MAX_FLOAT) > 0) {
              throw new OverflowException(bd, to);
            }
            result = new Float(bd.floatValue());
          } else if (to == Double.class) { // OK
            if (bd.compareTo(BigDecimal_MIN_DOUBLE) < 0
                || bd.compareTo(BigDecimal_MAX_DOUBLE) > 0) {
              throw new OverflowException(bd, to);
            }
            result = new Double(bd.doubleValue());
          } else {
            throw new TypeMismatchException(value.getClass(), to);
          }

        } else {
          throw new UnexpectedException("convert: " + from.getName());
        }
      } catch (final ArithmeticException e) {
        // Thrown by intValueExact() etc.
        throw new OverflowException((Number) value, to);
      }
    }

    @SuppressWarnings("unchecked")
    final T t = (T) result;
    return t;
  }