/*! \file diderot.h
 *
 * \author John Reppy
 *
 * This is the interface to the Diderot runtime for the C target.  For now,
 * we are targetting single-precision computations.
 */

/*
 * COPYRIGHT (c) 2010 The Diderot Project (http://diderot-language.cs.uchicago.edu)
 * All rights reserved.
 */

#ifndef _DIDEROT_H_
#define _DIDEROT_H_

#include "Diderot/config.h"

// include OpenCL headers when the target is OpenCL
#if defined(DIDEROT_TARGET_CL)
# ifdef HAVE_CL_CL_H
#   include <CL/cl.h>
# elif defined(HAVE_OPENCL_CL_H)
#   include <OpenCL/cl.h>
# else
#   error no cl.h
# endif
#endif

/* gcc has a bug that breaks code that uses 8-byte vectors (e.g., vec2f_t), but clang
 * handles the code correctly.
 */
#if defined(__clang__)
#  define VEC2_OK
#endif

#ifdef NDEBUG
#define STATIC_INLINE   static inline
#else
#define STATIC_INLINE   static
#endif

#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <math.h>
#include <stdio.h>  // for printing output

#include "types.h"
#include "strands.h"
#include "options.h"

/* load image data from Nrrd files */
extern Status_t Diderot_LoadImage1D (Diderot_string_t name, Diderot_image1D_t **img);
extern Status_t Diderot_LoadImage2D (Diderot_string_t name, Diderot_image2D_t **img);
extern Status_t Diderot_LoadImage3D (Diderot_string_t name, Diderot_image3D_t **img);

/* functions to get input-parameter values */
extern Status_t Diderot_InputString (const char *, const char **, bool);
extern Status_t Diderot_InputReal (const char *, Diderot_real_t *, bool);
extern Status_t Diderot_InputVec2 (const char *, Diderot_vec2_t *, bool);
extern Status_t Diderot_InputVec3 (const char *, Diderot_vec3_t *, bool);

extern char * loadKernel (const char * filename);

//! Summary information about the CPU configuration.
typedef struct {
    int         numHWNodes;             //!< \brief number of (possibly multicore) processors
    int         numHWCores;             //!< \brief total number of (possibly
                                        //!  mulithreaded) cores
    int         numHWThreads;           //!< \brief total number of hardware threads
    int         numCoresPerNode;        //!< \brief number of cores per thread
    int         numThdsPerCore;         //!< \brief number of threads per core
} CPUInfo_t;

//! \brief function to get information about the CPU configuration
bool GetNumCPUs (CPUInfo_t *info);

//! get the current time in seconds
double GetTime ();


/********** scalar math functions **********/

STATIC_INLINE float minf (float a, float b)
{
    return (a < b)? a : b;
}

STATIC_INLINE float maxf (float a, float b)
{
    return (a < b)? b : a;
}

STATIC_INLINE float lerpf (float a, float b, float t)
{
    return a + t*(b - a);
}

/********** vector math functions **********/

#include "inline-vec2.h"
#include "inline-vec3.h"
#include "inline-vec4.h"
#include "inline-matrix.h"


/********** other Diderot support functions **********/

#include "inline-image.h"

#endif /* !_DIDEROT_H_ */