Ln

Natural logarithm of each sample of a signal. More...

Functions
NppStatus	nppsLn_32f (const Npp32f *pSrc, Npp32f *pDst, int nLength)
	32-bit floating point signal natural logarithm. More...
NppStatus	nppsLn_64f (const Npp64f *pSrc, Npp64f *pDst, int nLength)
	64-bit floating point signal natural logarithm. More...
NppStatus	nppsLn_64f32f (const Npp64f *pSrc, Npp32f *pDst, int nLength)
	64-bit floating point signal natural logarithm with 32-bit floating point result. More...
NppStatus	nppsLn_32f_I (Npp32f *pSrcDst, int nLength)
	32-bit floating point signal natural logarithm. More...
NppStatus	nppsLn_64f_I (Npp64f *pSrcDst, int nLength)
	64-bit floating point signal natural logarithm. More...
NppStatus	nppsLn_16s_Sfs (const Npp16s *pSrc, Npp16s *pDst, int nLength, int nScaleFactor)
	16-bit signed short signal natural logarithm, scale, then clamp to saturated value. More...
NppStatus	nppsLn_32s_Sfs (const Npp32s *pSrc, Npp32s *pDst, int nLength, int nScaleFactor)
	32-bit signed integer signal natural logarithm, scale, then clamp to saturated value. More...
NppStatus	nppsLn_32s16s_Sfs (const Npp32s *pSrc, Npp16s *pDst, int nLength, int nScaleFactor)
	32-bit signed integer signal natural logarithm, scale, then clamp to 16-bit signed short saturated value. More...
NppStatus	nppsLn_16s_ISfs (Npp16s *pSrcDst, int nLength, int nScaleFactor)
	16-bit signed short signal natural logarithm, scale, then clamp to saturated value. More...
NppStatus	nppsLn_32s_ISfs (Npp32s *pSrcDst, int nLength, int nScaleFactor)
	32-bit signed integer signal natural logarithm, scale, then clamp to saturated value. More...

Detailed Description

Natural logarithm of each sample of a signal.

Function Documentation

NppStatus nppsLn_16s_ISfs	(	Npp16s *	pSrcDst,
		int	nLength,
		int	nScaleFactor
	)

16-bit signed short signal natural logarithm, scale, then clamp to saturated value.

Parameters

pSrcDst	In-Place Signal Pointer.
nLength	Signal Length.
nScaleFactor	Integer Result Scaling.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_16s_Sfs	(	const Npp16s *	pSrc,
		Npp16s *	pDst,
		int	nLength,
		int	nScaleFactor
	)

16-bit signed short signal natural logarithm, scale, then clamp to saturated value.

Parameters

pSrc	Source Signal Pointer.
pDst	Destination Signal Pointer.
nLength	Signal Length.
nScaleFactor	Integer Result Scaling.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_32f	(	const Npp32f *	pSrc,
		Npp32f *	pDst,
		int	nLength
	)

32-bit floating point signal natural logarithm.

Parameters

pSrc	Source Signal Pointer.
pDst	Destination Signal Pointer.
nLength	Signal Length.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_32f_I	(	Npp32f *	pSrcDst,
		int	nLength
	)

32-bit floating point signal natural logarithm.

Parameters

pSrcDst	In-Place Signal Pointer.
nLength	Signal Length.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_32s16s_Sfs	(	const Npp32s *	pSrc,
		Npp16s *	pDst,
		int	nLength,
		int	nScaleFactor
	)

32-bit signed integer signal natural logarithm, scale, then clamp to 16-bit signed short saturated value.

Parameters

pSrc	Source Signal Pointer.
pDst	Destination Signal Pointer.
nLength	Signal Length.
nScaleFactor	Integer Result Scaling.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_32s_ISfs	(	Npp32s *	pSrcDst,
		int	nLength,
		int	nScaleFactor
	)

32-bit signed integer signal natural logarithm, scale, then clamp to saturated value.

Parameters

pSrcDst	In-Place Signal Pointer.
nLength	Signal Length.
nScaleFactor	Integer Result Scaling.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_32s_Sfs	(	const Npp32s *	pSrc,
		Npp32s *	pDst,
		int	nLength,
		int	nScaleFactor
	)

32-bit signed integer signal natural logarithm, scale, then clamp to saturated value.

Parameters

pSrc	Source Signal Pointer.
pDst	Destination Signal Pointer.
nLength	Signal Length.
nScaleFactor	Integer Result Scaling.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_64f	(	const Npp64f *	pSrc,
		Npp64f *	pDst,
		int	nLength
	)

64-bit floating point signal natural logarithm.

Parameters

pSrc	Source Signal Pointer.
pDst	Destination Signal Pointer.
nLength	Signal Length.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_64f32f	(	const Npp64f *	pSrc,
		Npp32f *	pDst,
		int	nLength
	)

64-bit floating point signal natural logarithm with 32-bit floating point result.

Parameters

pSrc	Source Signal Pointer.
pDst	Destination Signal Pointer.
nLength	Signal Length.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsLn_64f_I	(	Npp64f *	pSrcDst,
		int	nLength
	)

64-bit floating point signal natural logarithm.

Parameters

pSrcDst	In-Place Signal Pointer.
nLength	Signal Length.

Returns

Signal Data Related Error Codes, Length Related Error Codes.