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//
// Copyright (c) 2017 The Khronos Group Inc.
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef CL_UTILS_H
#define  CL_UTILS_H

#include "harness/testHarness.h"
#include "harness/compat.h"
#include "harness/conversions.h"

#include <stdio.h>

#if !defined(_WIN32)
#include <sys/param.h>
#endif


#ifdef __MINGW32__
#define __mingw_printf printf
#endif
#include "harness/errorHelpers.h"

#include "harness/ThreadPool.h"



#include "test_config.h"

#ifdef __APPLE__
#include <OpenCL/opencl.h>
#else
#include <CL/opencl.h>
#endif

extern void            *gIn_half;
extern void            *gOut_half;
extern void            *gOut_half_reference;
extern void            *gOut_half_reference_double;
extern void            *gIn_single;
extern void            *gOut_single;
extern void            *gOut_single_reference;
extern void            *gIn_double;
// extern void            *gOut_double;
// extern void            *gOut_double_reference;
extern cl_mem          gInBuffer_half;
extern cl_mem          gOutBuffer_half;
extern cl_mem          gInBuffer_single;
extern cl_mem          gOutBuffer_single;
extern cl_mem          gInBuffer_double;
// extern cl_mem          gOutBuffer_double;

extern cl_context      gContext;
extern cl_command_queue gQueue;
extern uint32_t        gDeviceFrequency;
extern uint32_t        gComputeDevices;
extern size_t          gMaxThreadGroupSize;
extern size_t          gWorkGroupSize;
extern int             gTestDouble;
extern int             gReportTimes;

// gWimpyMode indicates if we run the test in wimpy mode where we limit the
// size of 32 bit ranges to a much smaller set.  This is meant to be used
// as a smoke test
extern bool            gWimpyMode;
extern int             gWimpyReductionFactor;

uint64_t ReadTime( void );
double SubtractTime( uint64_t endTime, uint64_t startTime );

cl_uint numVecs(cl_uint count, int vectorSizeIdx, bool aligned);
cl_uint runsOverBy(cl_uint count, int vectorSizeIdx, bool aligned);

void printSource(const char * src[], int len);

extern const char *vector_size_name_extensions[kVectorSizeCount+kStrangeVectorSizeCount];
extern const char *vector_size_strings[kVectorSizeCount+kStrangeVectorSizeCount];
extern const char *align_divisors[kVectorSizeCount+kStrangeVectorSizeCount];
extern const char *align_types[kVectorSizeCount+kStrangeVectorSizeCount];

test_status InitCL( cl_device_id device );
void ReleaseCL( void );
int RunKernel( cl_device_id device, cl_kernel kernel, void *inBuf, void *outBuf, uint32_t blockCount , int extraArg);
cl_program MakeProgram( cl_device_id device, const char *source[], int count );

static inline float as_float(cl_uint u) { union { cl_uint u; float f; }v; v.u = u; return v.f; }
static inline double as_double(cl_ulong u) { union { cl_ulong u; double d; }v; v.u = u; return v.d; }

// used to convert a bucket of bits into a search pattern through double
static inline cl_ulong DoubleFromUInt( cl_uint bits );
static inline cl_ulong DoubleFromUInt( cl_uint bits )
{
    // split 0x89abcdef to 0x89abcd00000000ef
    cl_ulong u = ((cl_ulong)(bits & ~0xffU) << 32) | ((cl_ulong)(bits & 0xffU));

    // sign extend the leading bit of def segment as sign bit so that the middle region consists of either all 1s or 0s
    u -= (cl_ulong)((bits & 0x80U) << 1);

    return u;
}

#endif /* CL_UTILS_H */