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ConvertDigitsToDouble ( uint digits, uint length, uint newLength ) : double[] |
Converts IntX digits into real representation (used in FHT).
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ConvertDoubleToDigits ( double array, uint length, uint digitsLength, uint digitsRes ) : void |
Converts real digits representation (result of FHT) into usual IntX digits.
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Fht ( double array, uint length ) : void |
Performs FHT "in place" for given double[] array.
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Fht ( double slice, uint length, int lengthLog2 ) : void |
Performs FHT "in place" for given double[] array slice.
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MultiplyFhtResults ( double data, double data2, uint length ) : void |
Multiplies two FHT results and stores multiplication in first one.
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ReverseFht ( double array, uint length ) : void |
Performs FHT reverse "in place" for given double[] array.
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ReverseFht ( double slice, uint length, int lengthLog2 ) : void |
Performs reverse FHT "in place" for given double[] array slice.
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메소드 | 설명 | |
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Fht4 ( double slice ) : void |
Performs FHT "in place" for given double[] array slice. Fast version for length == 4.
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FhtButterfly ( double slice1, double slice2, uint index1, uint index2, double cos, double sin ) : void |
Performs "butterfly" operation for Fht(double*, uint, int).
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FhtHelper ( ) | ||
FillSineTable ( double sineTable ) : void |
Fills sine table for FHT.
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GetInitialTrigValues ( TrigValues valuesPtr, int lengthLog2 ) : void |
Initializes trigonometry values for FHT.
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NextTrigValues ( TrigValues valuesPtr ) : void |
Generates next trigonometry values for FHT basing on previous ones.
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ReverseFht8 ( double slice ) : void |
Performs reverse FHT "in place" for given double[] array slice. Fast version for length == 8.
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ReverseFhtButterfly ( double slice1, double slice2, uint index1, uint index2, double cos, double sin ) : void |
Performs "butterfly" operation for ReverseFht(double*, uint, int).
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ReverseFhtButterfly2 ( double slice1, double slice2, uint index1, uint index2, double cos, double sin ) : void |
Performs "butterfly" operation for ReverseFht(double*, uint, int). Another version.
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public static ConvertDigitsToDouble ( uint digits, uint length, uint newLength ) : double[] | ||
digits | uint | Big integer digits. |
length | uint | |
newLength | uint | Multiplication result length (must be pow of 2). |
리턴 | double[] |
public static ConvertDoubleToDigits ( double array, uint length, uint digitsLength, uint digitsRes ) : void | ||
array | double | Real digits representation. |
length | uint | |
digitsLength | uint | New digits array length (we always do know the upper value for this array). |
digitsRes | uint | Big integer digits. |
리턴 | void |
public static Fht ( double array, uint length ) : void | ||
array | double | Double array. |
length | uint | Array length. |
리턴 | void |
public static Fht ( double slice, uint length, int lengthLog2 ) : void | ||
slice | double | Double array slice. |
length | uint | Slice length. |
lengthLog2 | int | Log2( |
리턴 | void |
public static MultiplyFhtResults ( double data, double data2, uint length ) : void | ||
data | double | First FHT result. |
data2 | double | Second FHT result. |
length | uint | FHT results length. |
리턴 | void |
public static ReverseFht ( double array, uint length ) : void | ||
array | double | Double array. |
length | uint | Array length. |
리턴 | void |
public static ReverseFht ( double slice, uint length, int lengthLog2 ) : void | ||
slice | double | Double array slice. |
length | uint | Slice length. |
lengthLog2 | int | Log2( |
리턴 | void |