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Add ability to get min/max values for generic floating point

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Ron Zuckerman 2024-02-09 18:52:32 -06:00
parent 484b9716db
commit af7ca28707
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3 changed files with 23 additions and 2 deletions
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5
BeefLibs/corlib/src/Double.bf
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@ -10,11 +10,14 @@ namespace System
using System.Diagnostics; using System.Diagnostics;
#unwarn #unwarn
public struct Double : double, IFloating, ISigned, IFormattable, IHashable, ICanBeNaN, IParseable<double> public struct Double : double, IFloating, ISigned, IFormattable, IHashable, ICanBeNaN, IParseable<double>, IMinMaxValue<double>
{ {
public const double MinValue = -1.7976931348623157E+308; public const double MinValue = -1.7976931348623157E+308;
public const double MaxValue = 1.7976931348623157E+308; public const double MaxValue = 1.7976931348623157E+308;
public static double IMinMaxValue<double>.MinValue => MinValue;
public static double IMinMaxValue<double>.MaxValue => MaxValue;
// Note Epsilon should be a double whose hex representation is 0x1 // Note Epsilon should be a double whose hex representation is 0x1
// on little endian machines. // on little endian machines.
public const double Epsilon = 4.9406564584124654E-324; public const double Epsilon = 4.9406564584124654E-324;

5
BeefLibs/corlib/src/Float.bf
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@ -3,7 +3,7 @@ using System.Globalization;
namespace System namespace System
{ {
#unwarn #unwarn
struct Float : float, IFloating, ISigned, IFormattable, IHashable, IEquatable<float>, ICanBeNaN, IParseable<float> struct Float : float, IFloating, ISigned, IFormattable, IHashable, IEquatable<float>, ICanBeNaN, IParseable<float>, IMinMaxValue<float>
{ {
public const float MinValue = (float)-3.40282346638528859e+38; public const float MinValue = (float)-3.40282346638528859e+38;
public const float Epsilon = (float)1.4e-45; public const float Epsilon = (float)1.4e-45;
@ -12,6 +12,9 @@ namespace System
public const float NegativeInfinity = -1.0f / 0.0f; public const float NegativeInfinity = -1.0f / 0.0f;
public const float NaN = 0.0f / 0.0f; public const float NaN = 0.0f / 0.0f;
public static float IMinMaxValue<float>.MinValue => MinValue;
public static float IMinMaxValue<float>.MaxValue => MaxValue;
// We use this explicit definition to avoid the confusion between 0.0 and -0.0. // We use this explicit definition to avoid the confusion between 0.0 and -0.0.
public const float NegativeZero = (float)-0.0; public const float NegativeZero = (float)-0.0;

15
IDEHelper/Tests/src/Floats.bf
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@ -50,5 +50,20 @@ namespace Tests
FloatParseErrTest("6E+"); FloatParseErrTest("6E+");
FloatParseErrTest("6e+"); FloatParseErrTest("6e+");
} }
public static void MinMaxTest<T>(T expectedMinValue, T expectedMaxValue)
where T : IMinMaxValue<T>
where int : operator T <=> T
{
Test.Assert(T.MinValue == expectedMinValue);
Test.Assert(T.MaxValue == expectedMaxValue);
}
[Test]
public static void TestMinMax()
{
MinMaxTest<float>(Float.MinValue, Float.MaxValue);
MinMaxTest<double>(Double.MinValue, Double.MaxValue);
}
} }
} }