dg::exblas::cpu Namespace Reference

cpu versions of the primitive functions More...

Functions
void	Accumulate (int64_t *accumulator, double x)
	Accumulate a double to the superaccumulator.
bool	Normalize (int64_t *accumulator, int &imin, int &imax)
	Normalize a superaccumulator.
double	Round (int64_t *accumulator)
	Convert a superaccumulator to the nearest double precision number (CPU version)

Detailed Description

cpu versions of the primitive functions

Function Documentation

Accumulate()

void dg::exblas::cpu::Accumulate ( int64_t * accumulator, double x )

inline

Accumulate a double to the superaccumulator.

Parameters

accumulator	a pointer to at least BIN_COUNT 64 bit integers on the CPU (representing the superaccumulator)
x	the double to add to the superaccumulator

Normalize()

bool dg::exblas::cpu::Normalize ( int64_t * accumulator, int & imin, int & imax )

inline

Normalize a superaccumulator.

Parameters

accumulator	a pointer to at least BIN_COUNT 64 bit integers on the CPU (representing the superaccumulator)
imin	the first index in the accumulator
imax	the last index in the accumulator

Returns

carry in bit (sign)

Round()

double dg::exblas::cpu::Round ( int64_t * accumulator )

inline

Convert a superaccumulator to the nearest double precision number (CPU version)

Parameters

accumulator

a pointer to at least BIN_COUNT 64 bit integers on the CPU (representing the superaccumulator)

Returns

the double precision number nearest to the superaccumulator