cudpp_util.h File Reference

C++ utility functions and classes used internally to cuDPP. More...

#include <cudpp.h>
#include <limits.h>
#include <float.h>

Classes
struct	typeToVector< T, N >
	Utility template struct for generating small vector types from scalar types. More...
class	Operator< T, oper >
	Templatized operator class used by scan and segmented scan. More...
Functions
bool	isPowerOfTwo (int n)
	Determine if n is a power of two.
bool	isMultiple (int n, int f)
	Determine if an integer n is a multiple of an integer f.
int	ceilPow2 (int n)
	Compute the smallest power of two larger than n.
int	floorPow2 (int n)
	Compute the largest power of two smaller than n.
template<class T >
__host__ __device__ T	getMax ()
	Returns the maximum value for type T.
template<class T >
__host__ __device__ T	getMin ()
	Returns the minimum value for type T.
template<class T >
int	max3 (T a, T b, T c)
	Returns the maximum of three values.

---

Detailed Description

C++ utility functions and classes used internally to cuDPP.

cudpp_util.h

---

Function Documentation

bool isPowerOfTwo

(

int

n

)

[inline]

Determine if n is a power of two.

Parameters:

n	Value to be checked to see if it is a power of two

Returns:

True if n is a power of two, false otherwise

bool isMultiple	(	int	n,
		int	f
	)		[inline]

Determine if an integer n is a multiple of an integer f.

Parameters:

n	Multiple
f	Factor

Returns:

True if n is a multiple of f, false otherwise

int ceilPow2

(

int

n

)

[inline]

Compute the smallest power of two larger than n.

Parameters:

n	Input value

Returns:

The smallest power f two larger than n

int floorPow2

(

int

n

)

[inline]

Compute the largest power of two smaller than n.

Parameters:

n	Input value

Returns:

The largest power of two smaller than n.

template<class T >

__host__ __device__ T getMax

(

)

[inline]

Returns the maximum value for type T.

Implemented using template specialization on T.

template<class T >

__host__ __device__ T getMin

(

)

[inline]

Returns the minimum value for type T.

Implemented using template specialization on T.

template<class T >

int max3	(	T	a,
		T	b,
		T	c
	)		[inline]

Returns the maximum of three values.

Parameters:

a	First value.
b	Second value.
c	Third value.

Returns:

The maximum of a, b and c.