Lookup table utilities

Introduction

This module consists of utility functions tailored towards LUT that are commonly applicable to various MATHLIB kernels.

Functions
template<typename vecType >
static c7x::uint_vec	MATHLIB_LUTReadUpperBits (vecType vecOffset)
	This method reads bits 63-32 of LUT value at vecOffset. More...
template<typename vecType >
static c7x::uint_vec	MATHLIB_LUTReadLowerBits (vecType vecOffset)
	This method reads bits 31-0 of LUT value at vecOffset. More...
static void	MATHLIB_LUTInit ()
	This method intializes the upper and lower bit lookup tables. More...

Macros
#define	MATHLIB_KTABLE_OFFSET   0
#define	MATHLIB_JTABLE_OFFSET   4
#define	MATHLIB_LOGTABLE_OFFSET   8
#define	MATHLIB_VTABLE_OFFSET   16

Macro Definition Documentation

MATHLIB_KTABLE_OFFSET

#define MATHLIB_KTABLE_OFFSET   0

Definition at line 64 of file MATHLIB_lut.h.

MATHLIB_JTABLE_OFFSET

#define MATHLIB_JTABLE_OFFSET   4

Definition at line 65 of file MATHLIB_lut.h.

MATHLIB_LOGTABLE_OFFSET

#define MATHLIB_LOGTABLE_OFFSET   8

Definition at line 66 of file MATHLIB_lut.h.

MATHLIB_VTABLE_OFFSET

#define MATHLIB_VTABLE_OFFSET   16

Definition at line 67 of file MATHLIB_lut.h.

Function Documentation

MATHLIB_LUTReadUpperBits()

template<typename vecType >

static c7x::uint_vec MATHLIB_LUTReadUpperBits ( vecType  vecOffset )

inlinestatic

This method reads bits 63-32 of LUT value at vecOffset.

Template Parameters

vecType

: datatype of implementation

Parameters

[in]

vecOffset

: input vector of LUT offsets

Returns

vector with LUT upper bit values.

Remarks

None

Definition at line 86 of file MATHLIB_lut.h.

MATHLIB_LUTReadLowerBits()

template<typename vecType >

static c7x::uint_vec MATHLIB_LUTReadLowerBits ( vecType  vecOffset )

inlinestatic

This method reads bits 31-0 of LUT value at vecOffset.

Template Parameters

vecType

: datatype of implementation

Parameters

[in]

vecOffset

: input vector of LUT offsets

Returns

vector with LUT lower bit values.

Remarks

None

Definition at line 111 of file MATHLIB_lut.h.

MATHLIB_LUTInit()

static void MATHLIB_LUTInit ( )

inlinestatic

This method intializes the upper and lower bit lookup tables.

Remarks

None

Definition at line 130 of file MATHLIB_lut.h.