Math::Floor Method (Double)

.NET Framework (current version)

Returns the largest integer less than or equal to the specified double-precision floating-point number.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

Syntax

public:
static double Floor(
	double d
)

Parameters

d: Type: System::Double
A double-precision floating-point number.

Return Value

Type: System::Double

The largest integer less than or equal to d. If d is equal to NaN, NegativeInfinity, or PositiveInfinity, that value is returned.

The behavior of this method follows IEEE Standard 754, section 4. This kind of rounding is sometimes called rounding toward negative infinity. In other words, if d is positive, any fractional component is truncated. If d is negative, the presence of any fractional component causes it to be rounded to the smaller integer. The operation of this method differs from the Ceiling method, which supports rounding toward positive infinity.

Examples

The following example illustrates the Math::Floor(Double) method and contrasts it with the Ceiling(Double) method.

C++

No code example is currently available or this language may not be supported.

Version Information

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1