Copyright©2012TexasInstrumentsIncorporated.FPU-DSP-LIB-UG-V131USER’SGUIDEC28xFloatingPointUnitDSPLibraryCopyrightCopyright©2012TexasInstrumentsIncorporated.Allrightsreserved.ControlSUITEisaregisteredtrademarkofTexasInstruments.Othernamesandbrandsmaybeclaimedasthepropertyofothers.Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemicon-ductorproductsanddisclaimerstheretoappearsattheendofthisdocument.TexasInstruments12203SouthwestFreewayHouston,TX77477http://www.ti.com/c2000RevisionInformationThisisversionV131ofthisdocument,lastupdatedonSep10,2012.Sep10,20122TableofContentsTableofContentsCopyright.....................................................2RevisionInformation...............................................21Introduction.................................................52LibraryStructure..............................................62.1BuildOptionsusedtobuildthelibrary...................................72.2HeaderFiles.................................................72.3ANoteaboutCfunctionsandIQMath...................................83FunctionDescriptions...........................................93.1ComplexFastFourierTransform......................................123.2ComplexFastFourierTransform(Unaligned)...............................153.3ComplexFastFourierTransformMagnitude................................173.4ComplexFastFourierTransformMagnitude(Scaled)...........................193.5ComplexFastFourierTransformPhase..................................213.6ComplexFastFourierTransformTwiddleFactors.............................233.7InverseComplexFastFourierTransform.................................253.8RealFastFourierTransform........................................283.9RealFastFourierTransform(Unaligned).................................313.10RealFastFourierTransformwithADCInput...............................333.11RealFastFourierTransformwithADCInput(Unaligned)........................363...
