NVIDIA 2D Image And Signal Performance Primitives (NPP)  Version 11.2.1.*
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Functions
Ln
Arithmetic Operations

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

Functions

NppStatus  nppsLn_32f_Ctx (const Npp32f *pSrc, Npp32f *pDst, int nLength, NppStreamContext nppStreamCtx)
  32-bit floating point signal natural logarithm. More...
 
NppStatus  nppsLn_32f (const Npp32f *pSrc, Npp32f *pDst, int nLength)
 
NppStatus  nppsLn_64f_Ctx (const Npp64f *pSrc, Npp64f *pDst, int nLength, NppStreamContext nppStreamCtx)
  64-bit floating point signal natural logarithm. More...
 
NppStatus  nppsLn_64f (const Npp64f *pSrc, Npp64f *pDst, int nLength)
 
NppStatus  nppsLn_64f32f_Ctx (const Npp64f *pSrc, Npp32f *pDst, int nLength, NppStreamContext nppStreamCtx)
  64-bit floating point signal natural logarithm with 32-bit floating point result. More...
 
NppStatus  nppsLn_64f32f (const Npp64f *pSrc, Npp32f *pDst, int nLength)
 
NppStatus  nppsLn_32f_I_Ctx (Npp32f *pSrcDst, int nLength, NppStreamContext nppStreamCtx)
  32-bit floating point signal natural logarithm. More...
 
NppStatus  nppsLn_32f_I (Npp32f *pSrcDst, int nLength)
 
NppStatus  nppsLn_64f_I_Ctx (Npp64f *pSrcDst, int nLength, NppStreamContext nppStreamCtx)
  64-bit floating point signal natural logarithm. More...
 
NppStatus  nppsLn_64f_I (Npp64f *pSrcDst, int nLength)
 
NppStatus  nppsLn_16s_Sfs_Ctx (const Npp16s *pSrc, Npp16s *pDst, int nLength, int nScaleFactor, NppStreamContext nppStreamCtx)
  16-bit signed short signal natural logarithm, scale, then clamp to saturated value. More...
 
NppStatus  nppsLn_16s_Sfs (const Npp16s *pSrc, Npp16s *pDst, int nLength, int nScaleFactor)
 
NppStatus  nppsLn_32s_Sfs_Ctx (const Npp32s *pSrc, Npp32s *pDst, int nLength, int nScaleFactor, NppStreamContext nppStreamCtx)
  32-bit signed integer signal natural logarithm, scale, then clamp to saturated value. More...
 
NppStatus  nppsLn_32s_Sfs (const Npp32s *pSrc, Npp32s *pDst, int nLength, int nScaleFactor)
 
NppStatus  nppsLn_32s16s_Sfs_Ctx (const Npp32s *pSrc, Npp16s *pDst, int nLength, int nScaleFactor, NppStreamContext nppStreamCtx)
  32-bit signed integer signal natural logarithm, scale, then clamp to 16-bit signed short saturated value. More...
 
NppStatus  nppsLn_32s16s_Sfs (const Npp32s *pSrc, Npp16s *pDst, int nLength, int nScaleFactor)
 
NppStatus  nppsLn_16s_ISfs_Ctx (Npp16s *pSrcDst, int nLength, int nScaleFactor, NppStreamContext nppStreamCtx)
  16-bit signed short signal natural logarithm, scale, then clamp to saturated value. More...
 
NppStatus  nppsLn_16s_ISfs (Npp16s *pSrcDst, int nLength, int nScaleFactor)
 
NppStatus  nppsLn_32s_ISfs_Ctx (Npp32s *pSrcDst, int nLength, int nScaleFactor, NppStreamContext nppStreamCtx)
  32-bit signed integer signal natural logarithm, scale, then clamp to saturated value. More...
 
NppStatus  nppsLn_32s_ISfs (Npp32s *pSrcDst, int nLength, int nScaleFactor)
 

Detailed Description

Natural logarithm of each sample of a signal.

Function Documentation

NppStatus nppsLn_16s_ISfs ( Npp16s *  pSrcDst,
int  nLength,
int  nScaleFactor 
)
NppStatus nppsLn_16s_ISfs_Ctx ( Npp16s *  pSrcDst,
int  nLength,
int  nScaleFactor,
NppStreamContext  nppStreamCtx 
)

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.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_16s_Sfs ( const Npp16s *  pSrc,
Npp16s *  pDst,
int  nLength,
int  nScaleFactor 
)
NppStatus nppsLn_16s_Sfs_Ctx ( const Npp16s *  pSrc,
Npp16s *  pDst,
int  nLength,
int  nScaleFactor,
NppStreamContext  nppStreamCtx 
)

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.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_32f ( const Npp32f *  pSrc,
Npp32f *  pDst,
int  nLength 
)
NppStatus nppsLn_32f_Ctx ( const Npp32f *  pSrc,
Npp32f *  pDst,
int  nLength,
NppStreamContext  nppStreamCtx 
)

32-bit floating point signal natural logarithm.

Parameters
pSrc Source Signal Pointer.
pDst Destination Signal Pointer.
nLength Signal Length.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_32f_I ( Npp32f *  pSrcDst,
int  nLength 
)
NppStatus nppsLn_32f_I_Ctx ( Npp32f *  pSrcDst,
int  nLength,
NppStreamContext  nppStreamCtx 
)

32-bit floating point signal natural logarithm.

Parameters
pSrcDst In-Place Signal Pointer.
nLength Signal Length.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_32s16s_Sfs ( const Npp32s *  pSrc,
Npp16s *  pDst,
int  nLength,
int  nScaleFactor 
)
NppStatus nppsLn_32s16s_Sfs_Ctx ( const Npp32s *  pSrc,
Npp16s *  pDst,
int  nLength,
int  nScaleFactor,
NppStreamContext  nppStreamCtx 
)

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.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_32s_ISfs ( Npp32s *  pSrcDst,
int  nLength,
int  nScaleFactor 
)
NppStatus nppsLn_32s_ISfs_Ctx ( Npp32s *  pSrcDst,
int  nLength,
int  nScaleFactor,
NppStreamContext  nppStreamCtx 
)

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.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_32s_Sfs ( const Npp32s *  pSrc,
Npp32s *  pDst,
int  nLength,
int  nScaleFactor 
)
NppStatus nppsLn_32s_Sfs_Ctx ( const Npp32s *  pSrc,
Npp32s *  pDst,
int  nLength,
int  nScaleFactor,
NppStreamContext  nppStreamCtx 
)

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.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_64f ( const Npp64f *  pSrc,
Npp64f *  pDst,
int  nLength 
)
NppStatus nppsLn_64f32f ( const Npp64f *  pSrc,
Npp32f *  pDst,
int  nLength 
)
NppStatus nppsLn_64f32f_Ctx ( const Npp64f *  pSrc,
Npp32f *  pDst,
int  nLength,
NppStreamContext  nppStreamCtx 
)

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.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_64f_Ctx ( const Npp64f *  pSrc,
Npp64f *  pDst,
int  nLength,
NppStreamContext  nppStreamCtx 
)

64-bit floating point signal natural logarithm.

Parameters
pSrc Source Signal Pointer.
pDst Destination Signal Pointer.
nLength Signal Length.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.
NppStatus nppsLn_64f_I ( Npp64f *  pSrcDst,
int  nLength 
)
NppStatus nppsLn_64f_I_Ctx ( Npp64f *  pSrcDst,
int  nLength,
NppStreamContext  nppStreamCtx 
)

64-bit floating point signal natural logarithm.

Parameters
pSrcDst In-Place Signal Pointer.
nLength Signal Length.
nppStreamCtx Application Managed Stream Context.
Returns
Signal Data Related Error Codes, Length Related Error Codes.