Mega Code Archive
Number calculation utils
<![CDATA[
#region License
/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
using System.ComponentModel;
#endregion
namespace Spring.Util
{
/// <summary>
/// Various utility methods relating to numbers.
/// </summary>
/// <remarks>
/// <p>
/// Mainly for internal use within the framework.
/// </p>
/// </remarks>
/// <author>Aleksandar Seovic</author>
public sealed class NumberUtils
{
/// <summary>
/// Determines whether the supplied <paramref name="number"/> is an integer.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <see lang="true"/> if the supplied <paramref name="number"/> is an integer.
/// </returns>
public static bool IsInteger(object number)
{
return (number is Int32 || number is Int16 || number is Int64 || number is UInt32
|| number is UInt16 || number is UInt64 || number is Byte || number is SByte);
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> is a decimal number.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <see lang="true"/> if the supplied <paramref name="number"/> is a decimal number.
/// </returns>
public static bool IsDecimal(object number)
{
return (number is Single || number is Double || number is Decimal);
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> is of numeric type.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <c>true</c> if the specified object is of numeric type; otherwise, <c>false</c>.
/// </returns>
public static bool IsNumber(object number)
{
return (IsInteger(number) || IsDecimal(number));
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> can be converted to an integer.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <see lang="true"/> if the supplied <paramref name="number"/> can be converted to an integer.
/// </returns>
public static bool CanConvertToInteger(object number)
{
TypeConverter converter = TypeDescriptor.GetConverter(number);
return (converter.CanConvertTo(typeof(Int32))
|| converter.CanConvertTo(typeof(Int16))
|| converter.CanConvertTo(typeof(Int64))
|| converter.CanConvertTo(typeof(UInt16))
|| converter.CanConvertTo(typeof(UInt64))
|| converter.CanConvertTo(typeof(Byte))
|| converter.CanConvertTo(typeof(SByte))
);
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> can be converted to an integer.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <see lang="true"/> if the supplied <paramref name="number"/> can be converted to an integer.
/// </returns>
public static bool CanConvertToDecimal(object number)
{
TypeConverter converter = TypeDescriptor.GetConverter(number);
return (converter.CanConvertTo(typeof(Single))
|| converter.CanConvertTo(typeof(Double))
|| converter.CanConvertTo(typeof(Decimal))
);
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> can be converted to a number.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <c>true</c> if the specified object is decimal number; otherwise, <c>false</c>.
/// </returns>
public static bool CanConvertToNumber(object number)
{
return (CanConvertToInteger(number) || CanConvertToDecimal(number));
}
/// <summary>
/// Is the supplied <paramref name="number"/> equal to zero (0)?
/// </summary>
/// <param name="number">The number to check.</param>
/// <returns>
/// <see lang="true"/> id the supplied <paramref name="number"/> is equal to zero (0).
/// </returns>
public static bool IsZero(object number)
{
if (number is Int32)
return ((Int32)number) == 0;
else if (number is Int16)
return ((Int16)number) == 0;
else if (number is Int64)
return ((Int64)number) == 0;
else if (number is UInt16)
return ((Int32)number) == 0;
else if (number is UInt32)
return ((Int64)number) == 0;
else if (number is UInt64)
return (Convert.ToDecimal(number) == 0);
else if (number is Byte)
return ((Int16)number) == 0;
else if (number is SByte)
return ((Int16)number) == 0;
else if (number is Single)
return ((Single)number) == 0f;
else if (number is Double)
return ((Double)number) == 0d;
else if (number is Decimal)
return ((Decimal)number) == 0m;
return false;
}
/// <summary>
/// Negates the supplied <paramref name="number"/>.
/// </summary>
/// <param name="number">The number to negate.</param>
/// <returns>The supplied <paramref name="number"/> negated.</returns>
/// <exception cref="System.ArgumentException">
/// If the supplied <paramref name="number"/> is not a supported numeric type.
/// </exception>
public static object Negate(object number)
{
if (number is Int32)
return -((Int32)number);
else if (number is Int16)
return -((Int16)number);
else if (number is Int64)
return -((Int64)number);
else if (number is UInt16)
return -((Int32)number);
else if (number is UInt32)
return -((Int64)number);
else if (number is UInt64)
return -(Convert.ToDecimal(number));
else if (number is Byte)
return -((Int16)number);
else if (number is SByte)
return -((Int16)number);
else if (number is Single)
return -((Single)number);
else if (number is Double)
return -((Double)number);
else if (number is Decimal)
return -((Decimal)number);
else
{
throw new ArgumentException(string.Format("'{0}' is not one of the supported numeric types.", number));
}
}
/// <summary>
/// Returns the bitwise not (~) of the supplied <paramref name="number"/>.
/// </summary>
/// <param name="number">The number.</param>
/// <returns>The value of ~<paramref name="number"/>.</returns>
/// <exception cref="System.ArgumentException">
/// If the supplied <paramref name="number"/> is not a supported numeric type.
/// </exception>
public static object BitwiseNot(object number)
{
if (number is bool)
return !((bool)number);
else if (number is Int32)
return ~((Int32)number);
else if (number is Int16)
return ~((Int16)number);
else if (number is Int64)
return ~((Int64)number);
else if (number is UInt16)
return ~((UInt16)number);
else if (number is UInt32)
return ~((UInt32)number);
else if (number is UInt64)
return ~((UInt64)number);
else if (number is Byte)
return ~((Byte)number);
else if (number is SByte)
return ~((SByte)number);
else
{
throw new ArgumentException(string.Format("'{0}' is not one of the supported integer types.", number));
}
}
/// <summary>
/// Bitwise ANDs (&) the specified integral values.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
/// <exception cref="System.ArgumentException">
/// If one of the supplied arguments is not a supported integral types.
/// </exception>
public static object BitwiseAnd(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is bool)
return (bool)m & (bool)n;
else if (n is Int32)
return (Int32)m & (Int32)n;
else if (n is Int16)
return (Int16)m & (Int16)n;
else if (n is Int64)
return (Int64)m & (Int64)n;
else if (n is UInt16)
return (UInt16)m & (UInt16)n;
else if (n is UInt32)
return (UInt32)m & (UInt32)n;
else if (n is UInt64)
return (UInt64)m & (UInt64)n;
else if (n is Byte)
return (Byte)m & (Byte)n;
else if (n is SByte)
return (SByte)m & (SByte)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported integral types.", m, n));
}
}
/// <summary>
/// Bitwise ORs (|) the specified integral values.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
/// <exception cref="System.ArgumentException">
/// If one of the supplied arguments is not a supported integral types.
/// </exception>
public static object BitwiseOr(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is bool)
return (bool)m | (bool)n;
else if (n is Int32)
return (Int32)m | (Int32)n;
#if NET_2_0
else if (n is Int16)
return (Int16)m | (Int16)n;
#endif
else if (n is Int64)
return (Int64)m | (Int64)n;
else if (n is UInt16)
return (UInt16)m | (UInt16)n;
else if (n is UInt32)
return (UInt32)m | (UInt32)n;
else if (n is UInt64)
return (UInt64)m | (UInt64)n;
else if (n is Byte)
return (Byte)m | (Byte)n;
#if NET_2_0
else if (n is SByte)
{
if (SystemUtils.MonoRuntime)
{
SByte x = (sbyte) n;
SByte y = (sbyte) m;
int result = (int) x | (int) y;
return SByte.Parse(result.ToString());
}
return (SByte) ((SByte) m | (SByte) n);
}
#endif
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported integral types.", m, n));
}
/// <summary>
/// Bitwise XORs (^) the specified integral values.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
/// <exception cref="System.ArgumentException">
/// If one of the supplied arguments is not a supported integral types.
/// </exception>
public static object BitwiseXor(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is bool)
return (bool)m ^ (bool)n;
else if (n is Int32)
return (Int32)m ^ (Int32)n;
else if (n is Int16)
return (Int16)m ^ (Int16)n;
else if (n is Int64)
return (Int64)m ^ (Int64)n;
else if (n is UInt16)
return (UInt16)m ^ (UInt16)n;
else if (n is UInt32)
return (UInt32)m ^ (UInt32)n;
else if (n is UInt64)
return (UInt64)m ^ (UInt64)n;
else if (n is Byte)
return (Byte)m ^ (Byte)n;
else if (n is SByte)
return (SByte)m ^ (SByte)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported integral types.", m, n));
}
}
/// <summary>
/// Adds the specified numbers.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Add(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m + (Int32)n;
else if (n is Int16)
return (Int16)m + (Int16)n;
else if (n is Int64)
return (Int64)m + (Int64)n;
else if (n is UInt16)
return (UInt16)m + (UInt16)n;
else if (n is UInt32)
return (UInt32)m + (UInt32)n;
else if (n is UInt64)
return (UInt64)m + (UInt64)n;
else if (n is Byte)
return (Byte)m + (Byte)n;
else if (n is SByte)
return (SByte)m + (SByte)n;
else if (n is Single)
return (Single)m + (Single)n;
else if (n is Double)
return (Double)m + (Double)n;
else if (n is Decimal)
return (Decimal)m + (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Subtracts the specified numbers.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Subtract(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m - (Int32)n;
else if (n is Int16)
return (Int16)m - (Int16)n;
else if (n is Int64)
return (Int64)m - (Int64)n;
else if (n is UInt16)
return (UInt16)m - (UInt16)n;
else if (n is UInt32)
return (UInt32)m - (UInt32)n;
else if (n is UInt64)
return (UInt64)m - (UInt64)n;
else if (n is Byte)
return (Byte)m - (Byte)n;
else if (n is SByte)
return (SByte)m - (SByte)n;
else if (n is Single)
return (Single)m - (Single)n;
else if (n is Double)
return (Double)m - (Double)n;
else if (n is Decimal)
return (Decimal)m - (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Multiplies the specified numbers.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Multiply(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m * (Int32)n;
else if (n is Int16)
return (Int16)m * (Int16)n;
else if (n is Int64)
return (Int64)m * (Int64)n;
else if (n is UInt16)
return (UInt16)m * (UInt16)n;
else if (n is UInt32)
return (UInt32)m * (UInt32)n;
else if (n is UInt64)
return (UInt64)m * (UInt64)n;
else if (n is Byte)
return (Byte)m * (Byte)n;
else if (n is SByte)
return (SByte)m * (SByte)n;
else if (n is Single)
return (Single)m * (Single)n;
else if (n is Double)
return (Double)m * (Double)n;
else if (n is Decimal)
return (Decimal)m * (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Divides the specified numbers.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Divide(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m / (Int32)n;
else if (n is Int16)
return (Int16)m / (Int16)n;
else if (n is Int64)
return (Int64)m / (Int64)n;
else if (n is UInt16)
return (UInt16)m / (UInt16)n;
else if (n is UInt32)
return (UInt32)m / (UInt32)n;
else if (n is UInt64)
return (UInt64)m / (UInt64)n;
else if (n is Byte)
return (Byte)m / (Byte)n;
else if (n is SByte)
return (SByte)m / (SByte)n;
else if (n is Single)
return (Single)m / (Single)n;
else if (n is Double)
return (Double)m / (Double)n;
else if (n is Decimal)
return (Decimal)m / (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Calculates remainder for the specified numbers.
/// </summary>
/// <param name="m">The first number (dividend).</param>
/// <param name="n">The second number (divisor).</param>
public static object Modulus(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m % (Int32)n;
else if (n is Int16)
return (Int16)m % (Int16)n;
else if (n is Int64)
return (Int64)m % (Int64)n;
else if (n is UInt16)
return (UInt16)m % (UInt16)n;
else if (n is UInt32)
return (UInt32)m % (UInt32)n;
else if (n is UInt64)
return (UInt64)m % (UInt64)n;
else if (n is Byte)
return (Byte)m % (Byte)n;
else if (n is SByte)
return (SByte)m % (SByte)n;
else if (n is Single)
return (Single)m % (Single)n;
else if (n is Double)
return (Double)m % (Double)n;
else if (n is Decimal)
return (Decimal)m % (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Raises first number to the power of the second one.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Power(object m, object n)
{
return Math.Pow(Convert.ToDouble(m), Convert.ToDouble(n));
}
/// <summary>
/// Coerces the types so they can be compared.
/// </summary>
/// <param name="m">The right.</param>
/// <param name="n">The left.</param>
public static void CoerceTypes(ref object m, ref object n)
{
TypeCode leftTypeCode = Convert.GetTypeCode(m);
TypeCode rightTypeCode = Convert.GetTypeCode(n);
if (leftTypeCode > rightTypeCode)
{
n = Convert.ChangeType(n, leftTypeCode);
}
else
{
m = Convert.ChangeType(m, rightTypeCode);
}
}
#region Constructor (s) / Destructor
// CLOVER:OFF
/// <summary>
/// Creates a new instance of the <see cref="Spring.Util.NumberUtils"/> class.
/// </summary>
/// <remarks>
/// <p>
/// This is a utility class, and as such exposes no public constructors.
/// </p>
/// </remarks>
private NumberUtils()
{
}
// CLOVER:ON
#endregion
}
}
]]>