public void Signbit()
{
Assert.IsFalse(ValueHelpers.Signbit(1.0));
Assert.IsTrue(ValueHelpers.Signbit(-1.0));
Assert.IsTrue(ValueHelpers.Signbit(float64NegativeZero));
Assert.IsFalse(ValueHelpers.Signbit(0.0));
}
public void Copysign()
{
Assert.AreEqual(42.0, ValueHelpers.Copysign(42.0, 1.0));
Assert.AreEqual(42.0, ValueHelpers.Copysign(-42.0, 1.0));
Assert.AreEqual(-42.0, ValueHelpers.Copysign(-42.0, -1.0));
Assert.AreEqual(42.0, ValueHelpers.Copysign(-42.0, 0.0));
Assert.AreEqual(-42.0, ValueHelpers.Copysign(-42.0, float64NegativeZero));
Assert.AreEqual(42.0, ValueHelpers.Copysign(-42.0, (double)Text.FloatLiteral.NaN(false)));
Assert.AreEqual(-42.0, ValueHelpers.Copysign(-42.0, (double)Text.FloatLiteral.NaN(true)));
}
/// <summary>
/// Gets or sets a value in memory at a particular byte offset.
/// </summary>
/// <value>A value in memory.</value>
public double this[uint offset]
{
get
{
return(ValueHelpers.ReinterpretAsFloat64(new LinearMemoryAsInt64(mem)[offset]));
}
set
{
var uintView = new LinearMemoryAsInt64(mem);
uintView[offset] = ValueHelpers.ReinterpretAsInt64(value);
}
}
public float this[uint Offset]
{
get
{
return(ValueHelpers.ReinterpretAsFloat32(new LinearMemoryAsInt32(mem)[Offset]));
}
set
{
var uintView = new LinearMemoryAsInt32(mem);
uintView[Offset] = ValueHelpers.ReinterpretAsInt32(value);
}
}
/// <summary>
/// Evaluates an initializer expression.
/// </summary>
/// <param name="expression">The expression to evaluate.</param>
/// <returns>The value obtained by evaluating the initializer expression.</returns>
public T Evaluate <T>(InitializerExpression expression)
{
return((T)Evaluate(expression, ValueHelpers.ToWasmValueType <T>()));
}
/// <summary>
/// Evaluates an initializer expression.
/// </summary>
/// <param name="expression">The expression to evaluate.</param>
/// <param name="resultType">The result type expected from the expression.</param>
/// <returns>The value obtained by evaluating the initializer expression.</returns>
public object Evaluate(InitializerExpression expression, Type resultType)
{
return(Evaluate(expression, ValueHelpers.ToWasmValueType(resultType)));
}