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//
// System.Single.cs
//
// Author:
// Miguel de Icaza (miguel@ximian.com)
//
// (C) Ximian, Inc. http://www.ximian.com
//
using System.Globalization;
using System.Runtime.CompilerServices;
namespace System {
[Serializable]
public struct Single : IComparable, IFormattable, IConvertible {
public const float Epsilon = 1.4e-45f;
public const float MaxValue = 3.40282346638528859e38f;
public const float MinValue = -3.40282346638528859e38f;
public const float NaN = 0.0f / 0.0f;
public const float PositiveInfinity = 1.0f / 0.0f;
public const float NegativeInfinity = -1.0f / 0.0f;
// VES needs to know about value. public is workaround
// so source will compile
public float value;
public int CompareTo (object v)
{
if (v == null)
return 1;
if (!(v is System.Single))
throw new ArgumentException (Locale.GetText ("Value is not a System.Single"));
return (int) (value - ((float) v));
}
public override bool Equals (object o)
{
if (!(o is System.Single))
return false;
return ((float) o) == value;
}
public override int GetHashCode ()
{
return (int) value;
}
public static bool IsInfinity (float f)
{
return (f == PositiveInfinity || f == NegativeInfinity);
}
public static bool IsNaN (float f)
{
return (f != f);
}
public static bool IsNegativeInfinity (float f)
{
return (f < 0.0f && (f == NegativeInfinity || f == PositiveInfinity));
}
public static bool IsPositiveInfinity (float f)
{
return (f > 0.0f && (f == NegativeInfinity || f == PositiveInfinity));
}
public static float Parse (string s)
{
double parsed_value = Double.Parse (
s, (NumberStyles.Float | NumberStyles.AllowThousands), null);
if (parsed_value > (double) float.MaxValue)
throw new OverflowException();
return (float) parsed_value;
}
public static float Parse (string s, IFormatProvider fp)
{
double parsed_value = Double.Parse (
s, (NumberStyles.Float | NumberStyles.AllowThousands), fp);
if (parsed_value > (double) float.MaxValue)
throw new OverflowException();
return (float) parsed_value;
}
public static float Parse (string s, NumberStyles style)
{
double parsed_value = Double.Parse (s, style, null);
if (parsed_value > (double) float.MaxValue)
throw new OverflowException();
return (float) parsed_value;
}
public static float Parse (string s, NumberStyles style, IFormatProvider fp)
{
double parsed_value = Double.Parse (s, style, fp);
if (parsed_value > (double) float.MaxValue)
throw new OverflowException();
return (float) parsed_value;
}
public override string ToString ()
{
return ToString (null, null);
}
public string ToString (IFormatProvider fp)
{
return ToString (null, fp);
}
public string ToString (string format)
{
return ToString (format, null);
}
[MonoTODO]
public string ToString (string format, IFormatProvider fp)
{
// FIXME: Need to pass format and provider info to this call too.
return ToStringImpl(value);
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
private static extern string ToStringImpl (float value);
// ============= IConvertible Methods ============ //
public TypeCode GetTypeCode ()
{
return TypeCode.Single;
}
bool IConvertible.ToBoolean (IFormatProvider provider)
{
return System.Convert.ToBoolean (value);
}
byte IConvertible.ToByte (IFormatProvider provider)
{
return System.Convert.ToByte (value);
}
char IConvertible.ToChar (IFormatProvider provider)
{
return System.Convert.ToChar (value);
}
DateTime IConvertible.ToDateTime (IFormatProvider provider)
{
return System.Convert.ToDateTime (value);
}
decimal IConvertible.ToDecimal (IFormatProvider provider)
{
return System.Convert.ToDecimal (value);
}
double IConvertible.ToDouble (IFormatProvider provider)
{
return System.Convert.ToDouble (value);
}
short IConvertible.ToInt16 (IFormatProvider provider)
{
return System.Convert.ToInt16 (value);
}
int IConvertible.ToInt32 (IFormatProvider provider)
{
return System.Convert.ToInt32 (value);
}
long IConvertible.ToInt64 (IFormatProvider provider)
{
return System.Convert.ToInt64 (value);
}
[CLSCompliant (false)]
sbyte IConvertible.ToSByte (IFormatProvider provider)
{
return System.Convert.ToSByte (value);
}
float IConvertible.ToSingle (IFormatProvider provider)
{
return System.Convert.ToSingle (value);
}
object IConvertible.ToType (Type conversionType, IFormatProvider provider)
{
return System.Convert.ToType (value, conversionType, provider);
}
[CLSCompliant (false)]
ushort IConvertible.ToUInt16 (IFormatProvider provider)
{
return System.Convert.ToUInt16 (value);
}
[CLSCompliant (false)]
uint IConvertible.ToUInt32 (IFormatProvider provider)
{
return System.Convert.ToUInt32 (value);
}
[CLSCompliant (false)]
ulong IConvertible.ToUInt64 (IFormatProvider provider)
{
return System.Convert.ToUInt64 (value);
}
}
}
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