NAudio.Utils.IEEE Class Reference

Methods for converting between IEEE 80-bit extended double precision and standard C# double precision. More...

Collaboration diagram for NAudio.Utils.IEEE:

Static Public Member Functions
static byte[]	ConvertToIeeeExtended (double num)
	Converts a double-precision floating-point number to its IEEE 754 extended precision representation.
static double	ConvertFromIeeeExtended (byte[] bytes)
	Converts the given IEEE extended byte array to a double value.

Static Private Member Functions
static double	UnsignedToFloat (ulong u)
	Converts the unsigned 64-bit integer to a floating-point number.
static double	ldexp (double x, int exp)
	Returns x multiplied by 2 raised to the power of exp.
static double	frexp (double x, out int exp)
	Splits a double-precision floating-point value into a normalized fraction and an integral power of 2.
static ulong	FloatToUnsigned (double f)
	Converts a floating-point number to an unsigned long integer.

Detailed Description

Methods for converting between IEEE 80-bit extended double precision and standard C# double precision.

Member Function Documentation

ConvertFromIeeeExtended()

static double NAudio.Utils.IEEE.ConvertFromIeeeExtended ( byte[] bytes )

inlinestatic

Converts the given IEEE extended byte array to a double value.

Parameters

bytes

The IEEE extended byte array to be converted.

Exceptions

Exception

Thrown when the length of the input byte array is not 10.

Returns

The double value converted from the IEEE extended byte array.

This method converts the given IEEE extended byte array to a double value according to the IEEE 754 standard. It first extracts the sign, exponent, and mantissa from the byte array and then performs the necessary calculations to obtain the double value. If the input represents Infinity or NaN, the method returns double.NaN.

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ConvertToIeeeExtended()

static byte[] NAudio.Utils.IEEE.ConvertToIeeeExtended ( double num )

inlinestatic

Converts a double-precision floating-point number to its IEEE 754 extended precision representation.

Parameters

num	The number to be converted.

Returns

The IEEE 754 extended precision representation of the input num .

This method first determines the sign of the input number and then calculates the exponent and mantissa based on the input number. If the input number is 0, the resulting IEEE 754 extended precision representation will have all bits set to 0. If the input number is Infinity or NaN, the resulting IEEE 754 extended precision representation will be set accordingly. For finite numbers, the method calculates the exponent and mantissa, and then constructs the 10-byte representation of the IEEE 754 extended precision format. The resulting byte array contains the sign bit, exponent, and mantissa in the IEEE 754 extended precision format.

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FloatToUnsigned()

static ulong NAudio.Utils.IEEE.FloatToUnsigned ( double f )

inlinestaticprivate

Converts a floating-point number to an unsigned long integer.

Parameters

f	The floating-point number to be converted.

Returns

The unsigned long integer equivalent of the input floating-point number f .

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frexp()

static double NAudio.Utils.IEEE.frexp ( double x, out int exp )

inlinestaticprivate

Splits a double-precision floating-point value into a normalized fraction and an integral power of 2.

Parameters

x	The value to be split.
exp	When this method returns, contains the exponent of the value.

Returns

The normalized fraction of the value, and sets exp to the exponent.

This method calculates the exponent of the input value x and sets it in the out parameter exp . It then computes the normalized fraction by subtracting the power of 2 raised to the exponent from the input value and dividing it by the same power of 2.

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ldexp()

static double NAudio.Utils.IEEE.ldexp ( double x, int exp )

inlinestaticprivate

Returns x multiplied by 2 raised to the power of exp.

Parameters

x	The number to be multiplied.
exp	The exponent to raise 2 to.

Returns

The result of multiplying x by 2 raised to the power of exp .

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UnsignedToFloat()

static double NAudio.Utils.IEEE.UnsignedToFloat ( ulong u )

inlinestaticprivate

Converts the unsigned 64-bit integer to a floating-point number.

Parameters

u	The unsigned 64-bit integer to be converted.

Returns

The floating-point representation of the input unsigned 64-bit integer.

This method converts the input unsigned 64-bit integer u to a floating-point number by subtracting 2147483647 and 1 from it, casting the result to a long, then casting it to a double, and finally adding 2147483648.0 to the result.

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The documentation for this class was generated from the following file:

• /Users/sumansaurabh/Documents/my-startup/xeno-rat/Plugins/LiveMicrophone/lib/NAudio.Core/Utils/IEEE.cs