nvidia-vfx-prototyping/samples/external/cuda/include/driver_functions.h

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 * computer software documentation" as such terms are used in 48
 * C.F.R. 12.212 (SEPT 1995) and is provided to the U.S. Government
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 * 48 C.F.R. 227.7202-1 through 227.7202-4 (JUNE 1995), all
 * U.S. Government End Users acquire the Licensed Deliverables with
 * only those rights set forth herein.
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 */

#if !defined(__DRIVER_FUNCTIONS_H__)
#define __DRIVER_FUNCTIONS_H__

#include "builtin_types.h"
#include "crt/host_defines.h"
#include "driver_types.h"

/**
 * \addtogroup CUDART_MEMORY
 *
 * @{
 */

/**
 * \brief Returns a cudaPitchedPtr based on input parameters
 *
 * Returns a ::cudaPitchedPtr based on the specified input parameters \p d,
 * \p p, \p xsz, and \p ysz.
 *
 * \param d   - Pointer to allocated memory
 * \param p   - Pitch of allocated memory in bytes
 * \param xsz - Logical width of allocation in elements
 * \param ysz - Logical height of allocation in elements
 *
 * \return
 * ::cudaPitchedPtr specified by \p d, \p p, \p xsz, and \p ysz
 *
 * \sa make_cudaExtent, make_cudaPos
 */
static __inline__ __host__ struct cudaPitchedPtr make_cudaPitchedPtr(void *d, size_t p, size_t xsz, size_t ysz) 
{
  struct cudaPitchedPtr s;

  s.ptr   = d;
  s.pitch = p;
  s.xsize = xsz;
  s.ysize = ysz;

  return s;
}

/**
 * \brief Returns a cudaPos based on input parameters
 *
 * Returns a ::cudaPos based on the specified input parameters \p x,
 * \p y, and \p z.
 *
 * \param x - X position
 * \param y - Y position
 * \param z - Z position
 *
 * \return
 * ::cudaPos specified by \p x, \p y, and \p z
 *
 * \sa make_cudaExtent, make_cudaPitchedPtr
 */
static __inline__ __host__ struct cudaPos make_cudaPos(size_t x, size_t y, size_t z) 
{
  struct cudaPos p;

  p.x = x;
  p.y = y;
  p.z = z;

  return p;
}

/**
 * \brief Returns a cudaExtent based on input parameters
 *
 * Returns a ::cudaExtent based on the specified input parameters \p w,
 * \p h, and \p d.
 *
 * \param w - Width in elements when referring to array memory, in bytes when referring to linear memory
 * \param h - Height in elements
 * \param d - Depth in elements
 *
 * \return
 * ::cudaExtent specified by \p w, \p h, and \p d
 *
 * \sa make_cudaPitchedPtr, make_cudaPos
 */
static __inline__ __host__ struct cudaExtent make_cudaExtent(size_t w, size_t h, size_t d) 
{
  struct cudaExtent e;

  e.width  = w;
  e.height = h;
  e.depth  = d;

  return e;
}

/** @} */ /* END CUDART_MEMORY */

#endif /* !__DRIVER_FUNCTIONS_H__ */