gpu::xetla::FastDivMod Struct Reference

Fast division + modulus operation Host code pre-computes values to avoid expensive operations in kernel code. More...

#include <fastmath.hpp>

Public Member Functions
	FastDivMod ()
	Constructor, called in Hostcode to pre-compute multiplier and shift_right;.
	FastDivMod (int divisor_)
	operator int () const
__XETLA_API KERNEL_FUNC void	fast_divmod (int &quotient, int &remainder, int dividend) const
	Kernel side function to find quotient and remainder.
__XETLA_API KERNEL_FUNC int	div (int dividend) const
	kernel side utility functions for query of quotient

Public Attributes
int	divisor
unsigned int	multiplier
unsigned int	shift_right

Detailed Description

Fast division + modulus operation Host code pre-computes values to avoid expensive operations in kernel code.

Constructor & Destructor Documentation

FastDivMod() [1/2]

gpu::xetla::FastDivMod::FastDivMod ( )

inline

Constructor, called in Hostcode to pre-compute multiplier and shift_right;.

FastDivMod() [2/2]

gpu::xetla::FastDivMod::FastDivMod ( int  divisor_ )

inline

Member Function Documentation

div()

__XETLA_API KERNEL_FUNC int gpu::xetla::FastDivMod::div ( int  dividend ) const

inline

kernel side utility functions for query of quotient

fast_divmod()

__XETLA_API KERNEL_FUNC void gpu::xetla::FastDivMod::fast_divmod ( int &  quotient, int &  remainder, int  dividend  ) const

inline

Kernel side function to find quotient and remainder.

operator int()

gpu::xetla::FastDivMod::operator int ( ) const

inline

Member Data Documentation

divisor

int gpu::xetla::FastDivMod::divisor

multiplier

unsigned int gpu::xetla::FastDivMod::multiplier

shift_right

unsigned int gpu::xetla::FastDivMod::shift_right