//
// 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.
//
#include "Utility.h"

#include <string.h>
#include "FunctionList.h"

int TestFunc_mad(const Func *f, MTdata, bool relaxedMode);
int TestFunc_mad_Double(const Func *f, MTdata, bool relaxedMode);

extern const vtbl _mad_tbl = { "ternary", TestFunc_mad, TestFunc_mad_Double };

static int BuildKernel(const char *name, int vectorSize, cl_kernel *k,
                       cl_program *p, bool relaxedMode);
static int BuildKernelDouble(const char *name, int vectorSize, cl_kernel *k,
                             cl_program *p, bool relaxedMode);

static int BuildKernel(const char *name, int vectorSize, cl_kernel *k,
                       cl_program *p, bool relaxedMode)
{
    const char *c[] = { "__kernel void math_kernel",
                        sizeNames[vectorSize],
                        "( __global float",
                        sizeNames[vectorSize],
                        "* out, __global float",
                        sizeNames[vectorSize],
                        "* in1, __global float",
                        sizeNames[vectorSize],
                        "* in2,  __global float",
                        sizeNames[vectorSize],
                        "* in3 )\n"
                        "{\n"
                        "   int i = get_global_id(0);\n"
                        "   out[i] = ",
                        name,
                        "( in1[i], in2[i], in3[i] );\n"
                        "}\n" };
    const char *c3[] = {
        "__kernel void math_kernel",
        sizeNames[vectorSize],
        "( __global float* out, __global float* in, __global float* in2, "
        "__global float* in3)\n"
        "{\n"
        "   size_t i = get_global_id(0);\n"
        "   if( i + 1 < get_global_size(0) )\n"
        "   {\n"
        "       float3 f0 = vload3( 0, in + 3 * i );\n"
        "       float3 f1 = vload3( 0, in2 + 3 * i );\n"
        "       float3 f2 = vload3( 0, in3 + 3 * i );\n"
        "       f0 = ",
        name,
        "( f0, f1, f2 );\n"
        "       vstore3( f0, 0, out + 3*i );\n"
        "   }\n"
        "   else\n"
        "   {\n"
        "       size_t parity = i & 1;   // Figure out how many elements are "
        "left over after BUFFER_SIZE % (3*sizeof(float)). Assume power of two "
        "buffer size \n"
        "       float3 f0, f1, f2;\n"
        "       switch( parity )\n"
        "       {\n"
        "           case 1:\n"
        "               f0 = (float3)( in[3*i], NAN, NAN ); \n"
        "               f1 = (float3)( in2[3*i], NAN, NAN ); \n"
        "               f2 = (float3)( in3[3*i], NAN, NAN ); \n"
        "               break;\n"
        "           case 0:\n"
        "               f0 = (float3)( in[3*i], in[3*i+1], NAN ); \n"
        "               f1 = (float3)( in2[3*i], in2[3*i+1], NAN ); \n"
        "               f2 = (float3)( in3[3*i], in3[3*i+1], NAN ); \n"
        "               break;\n"
        "       }\n"
        "       f0 = ",
        name,
        "( f0, f1, f2 );\n"
        "       switch( parity )\n"
        "       {\n"
        "           case 0:\n"
        "               out[3*i+1] = f0.y; \n"
        "               // fall through\n"
        "           case 1:\n"
        "               out[3*i] = f0.x; \n"
        "               break;\n"
        "       }\n"
        "   }\n"
        "}\n"
    };

    const char **kern = c;
    size_t kernSize = sizeof(c) / sizeof(c[0]);

    if (sizeValues[vectorSize] == 3)
    {
        kern = c3;
        kernSize = sizeof(c3) / sizeof(c3[0]);
    }

    char testName[32];
    snprintf(testName, sizeof(testName) - 1, "math_kernel%s",
             sizeNames[vectorSize]);

    return MakeKernel(kern, (cl_uint)kernSize, testName, k, p, relaxedMode);
}

static int BuildKernelDouble(const char *name, int vectorSize, cl_kernel *k,
                             cl_program *p, bool relaxedMode)
{
    const char *c[] = { "#pragma OPENCL EXTENSION cl_khr_fp64 : enable\n",
                        "__kernel void math_kernel",
                        sizeNames[vectorSize],
                        "( __global double",
                        sizeNames[vectorSize],
                        "* out, __global double",
                        sizeNames[vectorSize],
                        "* in1, __global double",
                        sizeNames[vectorSize],
                        "* in2,  __global double",
                        sizeNames[vectorSize],
                        "* in3 )\n"
                        "{\n"
                        "   int i = get_global_id(0);\n"
                        "   out[i] = ",
                        name,
                        "( in1[i], in2[i], in3[i] );\n"
                        "}\n" };
    const char *c3[] = {
        "#pragma OPENCL EXTENSION cl_khr_fp64 : enable\n",
        "__kernel void math_kernel",
        sizeNames[vectorSize],
        "( __global double* out, __global double* in, __global double* in2, "
        "__global double* in3)\n"
        "{\n"
        "   size_t i = get_global_id(0);\n"
        "   if( i + 1 < get_global_size(0) )\n"
        "   {\n"
        "       double3 d0 = vload3( 0, in + 3 * i );\n"
        "       double3 d1 = vload3( 0, in2 + 3 * i );\n"
        "       double3 d2 = vload3( 0, in3 + 3 * i );\n"
        "       d0 = ",
        name,
        "( d0, d1, d2 );\n"
        "       vstore3( d0, 0, out + 3*i );\n"
        "   }\n"
        "   else\n"
        "   {\n"
        "       size_t parity = i & 1;   // Figure out how many elements are "
        "left over after BUFFER_SIZE % (3*sizeof(float)). Assume power of two "
        "buffer size \n"
        "       double3 d0, d1, d2;\n"
        "       switch( parity )\n"
        "       {\n"
        "           case 1:\n"
        "               d0 = (double3)( in[3*i], NAN, NAN ); \n"
        "               d1 = (double3)( in2[3*i], NAN, NAN ); \n"
        "               d2 = (double3)( in3[3*i], NAN, NAN ); \n"
        "               break;\n"
        "           case 0:\n"
        "               d0 = (double3)( in[3*i], in[3*i+1], NAN ); \n"
        "               d1 = (double3)( in2[3*i], in2[3*i+1], NAN ); \n"
        "               d2 = (double3)( in3[3*i], in3[3*i+1], NAN ); \n"
        "               break;\n"
        "       }\n"
        "       d0 = ",
        name,
        "( d0, d1, d2 );\n"
        "       switch( parity )\n"
        "       {\n"
        "           case 0:\n"
        "               out[3*i+1] = d0.y; \n"
        "               // fall through\n"
        "           case 1:\n"
        "               out[3*i] = d0.x; \n"
        "               break;\n"
        "       }\n"
        "   }\n"
        "}\n"
    };

    const char **kern = c;
    size_t kernSize = sizeof(c) / sizeof(c[0]);

    if (sizeValues[vectorSize] == 3)
    {
        kern = c3;
        kernSize = sizeof(c3) / sizeof(c3[0]);
    }

    char testName[32];
    snprintf(testName, sizeof(testName) - 1, "math_kernel%s",
             sizeNames[vectorSize]);

    return MakeKernel(kern, (cl_uint)kernSize, testName, k, p, relaxedMode);
}

typedef struct BuildKernelInfo
{
    cl_uint offset; // the first vector size to build
    cl_kernel *kernels;
    cl_program *programs;
    const char *nameInCode;
    bool relaxedMode; // Whether to build with -cl-fast-relaxed-math.
} BuildKernelInfo;

static cl_int BuildKernel_FloatFn(cl_uint job_id, cl_uint thread_id UNUSED,
                                  void *p);
static cl_int BuildKernel_FloatFn(cl_uint job_id, cl_uint thread_id UNUSED,
                                  void *p)
{
    BuildKernelInfo *info = (BuildKernelInfo *)p;
    cl_uint i = info->offset + job_id;
    return BuildKernel(info->nameInCode, i, info->kernels + i,
                       info->programs + i, info->relaxedMode);
}

static cl_int BuildKernel_DoubleFn(cl_uint job_id, cl_uint thread_id UNUSED,
                                   void *p);
static cl_int BuildKernel_DoubleFn(cl_uint job_id, cl_uint thread_id UNUSED,
                                   void *p)
{
    BuildKernelInfo *info = (BuildKernelInfo *)p;
    cl_uint i = info->offset + job_id;
    return BuildKernelDouble(info->nameInCode, i, info->kernels + i,
                             info->programs + i, info->relaxedMode);
}

int TestFunc_mad(const Func *f, MTdata d, bool relaxedMode)
{
    uint64_t i;
    uint32_t j, k;
    int error;

    logFunctionInfo(f->name, sizeof(cl_float), relaxedMode);

    cl_program programs[VECTOR_SIZE_COUNT];
    cl_kernel kernels[VECTOR_SIZE_COUNT];
    float maxError = 0.0f;
    //    int ftz = f->ftz || gForceFTZ || 0 == (CL_FP_DENORM &
    //    gFloatCapabilities);
    float maxErrorVal = 0.0f;
    float maxErrorVal2 = 0.0f;
    float maxErrorVal3 = 0.0f;
    size_t bufferSize = (gWimpyMode) ? gWimpyBufferSize : BUFFER_SIZE;
    uint64_t step = getTestStep(sizeof(float), bufferSize);

    // Init the kernels
    BuildKernelInfo build_info = { gMinVectorSizeIndex, kernels, programs,
                                   f->nameInCode, relaxedMode };
    if ((error = ThreadPool_Do(BuildKernel_FloatFn,
                               gMaxVectorSizeIndex - gMinVectorSizeIndex,
                               &build_info)))
        return error;
    /*
        for( i = gMinVectorSizeIndex; i < gMaxVectorSizeIndex; i++ )
            if( (error =  BuildKernel( f->nameInCode, (int) i, kernels + i,
       programs + i) ) ) return error;
    */

    for (i = 0; i < (1ULL << 32); i += step)
    {
        // Init input array
        uint32_t *p = (uint32_t *)gIn;
        uint32_t *p2 = (uint32_t *)gIn2;
        uint32_t *p3 = (uint32_t *)gIn3;
        for (j = 0; j < bufferSize / sizeof(float); j++)
        {
            p[j] = genrand_int32(d);
            p2[j] = genrand_int32(d);
            p3[j] = genrand_int32(d);
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer, CL_FALSE, 0,
                                          bufferSize, gIn, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer ***\n", error);
            return error;
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer2, CL_FALSE, 0,
                                          bufferSize, gIn2, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer2 ***\n", error);
            return error;
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer3, CL_FALSE, 0,
                                          bufferSize, gIn3, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer3 ***\n", error);
            return error;
        }

        // write garbage into output arrays
        for (j = gMinVectorSizeIndex; j < gMaxVectorSizeIndex; j++)
        {
            uint32_t pattern = 0xffffdead;
            memset_pattern4(gOut[j], &pattern, bufferSize);
            if ((error =
                     clEnqueueWriteBuffer(gQueue, gOutBuffer[j], CL_FALSE, 0,
                                          bufferSize, gOut[j], 0, NULL, NULL)))
            {
                vlog_error("\n*** Error %d in clEnqueueWriteBuffer2(%d) ***\n",
                           error, j);
                goto exit;
            }
        }

        // Run the kernels
        for (j = gMinVectorSizeIndex; j < gMaxVectorSizeIndex; j++)
        {
            size_t vectorSize = sizeof(cl_float) * sizeValues[j];
            size_t localCount = (bufferSize + vectorSize - 1)
                / vectorSize; // bufferSize / vectorSize  rounded up
            if ((error = clSetKernelArg(kernels[j], 0, sizeof(gOutBuffer[j]),
                                        &gOutBuffer[j])))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 1, sizeof(gInBuffer),
                                        &gInBuffer)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 2, sizeof(gInBuffer2),
                                        &gInBuffer2)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 3, sizeof(gInBuffer3),
                                        &gInBuffer3)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }

            if ((error =
                     clEnqueueNDRangeKernel(gQueue, kernels[j], 1, NULL,
                                            &localCount, NULL, 0, NULL, NULL)))
            {
                vlog_error("FAILED -- could not execute kernel\n");
                goto exit;
            }
        }

        // Get that moving
        if ((error = clFlush(gQueue))) vlog("clFlush failed\n");

        // Calculate the correctly rounded reference result
        float *r = (float *)gOut_Ref;
        float *s = (float *)gIn;
        float *s2 = (float *)gIn2;
        float *s3 = (float *)gIn3;
        for (j = 0; j < bufferSize / sizeof(float); j++)
            r[j] = (float)f->func.f_fff(s[j], s2[j], s3[j]);

        // Read the data back
        for (j = gMinVectorSizeIndex; j < gMaxVectorSizeIndex; j++)
        {
            if ((error =
                     clEnqueueReadBuffer(gQueue, gOutBuffer[j], CL_TRUE, 0,
                                         bufferSize, gOut[j], 0, NULL, NULL)))
            {
                vlog_error("ReadArray failed %d\n", error);
                goto exit;
            }
        }

        if (gSkipCorrectnessTesting) break;

        // Verify data  -- Commented out on purpose. no verification possible.
        // MAD is a random number generator.
        /*
                uint32_t *t = gOut_Ref;
                for( j = 0; j < bufferSize / sizeof( float ); j++ )
                {
                    for( k = gMinVectorSizeIndex; k < gMaxVectorSizeIndex; k++ )
                    {
                        uint32_t *q = gOut[k];

                        // If we aren't getting the correctly rounded result
                        if( t[j] != q[j] )
                        {
                            float test = ((float*) q)[j];
                            double correct = f->func.f_fff( s[j], s2[j], s3[j]
         ); float err = Ulp_Error( test, correct ); int fail = ! (fabsf(err) <=
         f->float_ulps);

                            if( fail && ftz )
                            {
                                // retry per section 6.5.3.2
                                if( IsFloatSubnormal(correct) )
                                { // look at me,
                                    fail = fail && ( test != 0.0f );
                                    if( ! fail )
                                        err = 0.0f;
                                }

                                // retry per section 6.5.3.3
                                if( fail && IsFloatSubnormal( s[j] ) )
                                { // look at me,
                                    double correct2 = f->func.f_fff( 0.0, s2[j],
         s3[j] ); double correct3 = f->func.f_fff( -0.0, s2[j], s3[j] ); float
         err2 = Ulp_Error( test, correct2  ); float err3 = Ulp_Error( test,
         correct3  ); fail =  fail && ((!(fabsf(err2) <= f->float_ulps)) &&
         (!(fabsf(err3) <= f->float_ulps))); if( fabsf( err2 ) < fabsf(err ) )
                                        err = err2;
                                    if( fabsf( err3 ) < fabsf(err ) )
                                        err = err3;

                                    // retry per section 6.5.3.4
                                    if( IsFloatResultSubnormal(correct2,
         f->float_ulps ) || IsFloatResultSubnormal(correct3, f->float_ulps ) )
                                    { // look at me now,
                                        fail = fail && ( test != 0.0f);
                                        if( ! fail )
                                            err = 0.0f;
                                    }

                                    //try with first two args as zero
                                    if( IsFloatSubnormal( s2[j] ) )
                                    { // its fun to have fun,
                                        correct2 = f->func.f_fff( 0.0, 0.0,
         s3[j] ); correct3 = f->func.f_fff( -0.0, 0.0, s3[j] ); double correct4
         = f->func.f_fff( 0.0, -0.0, s3[j] ); double correct5 = f->func.f_fff(
         -0.0, -0.0, s3[j] ); err2 = Ulp_Error( test, correct2  ); err3 =
         Ulp_Error( test, correct3  ); float err4 = Ulp_Error( test, correct4 );
                                        float err5 = Ulp_Error( test, correct5
         ); fail =  fail && ((!(fabsf(err2) <= f->float_ulps)) && (!(fabsf(err3)
         <= f->float_ulps)) &&
                                                         (!(fabsf(err4) <=
         f->float_ulps)) && (!(fabsf(err5) <= f->float_ulps))); if( fabsf( err2
         ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) ) err =
         err3; if( fabsf( err4 ) < fabsf(err ) ) err = err4; if( fabsf( err5 ) <
         fabsf(err ) ) err = err5;

                                        // retry per section 6.5.3.4
                                        if( IsFloatResultSubnormal(correct2,
         f->float_ulps ) || IsFloatResultSubnormal(correct3, f->float_ulps ) ||
                                            IsFloatResultSubnormal(correct4,
         f->float_ulps ) || IsFloatResultSubnormal(correct5, f->float_ulps ) )
                                        {
                                            fail = fail && ( test != 0.0f);
                                            if( ! fail )
                                                err = 0.0f;
                                        }

                                        if( IsFloatSubnormal( s3[j] )  )
                                        { // but you have to know how!
                                            correct2 = f->func.f_fff( 0.0, 0.0,
         0.0f ); correct3 = f->func.f_fff( -0.0, 0.0, 0.0f ); correct4 =
         f->func.f_fff( 0.0, -0.0, 0.0f ); correct5 = f->func.f_fff( -0.0, -0.0,
         0.0f ); double correct6 = f->func.f_fff( 0.0, 0.0, -0.0f ); double
         correct7 = f->func.f_fff( -0.0, 0.0, -0.0f ); double correct8 =
         f->func.f_fff( 0.0, -0.0, -0.0f ); double correct9 = f->func.f_fff(
         -0.0, -0.0, -0.0f ); err2 = Ulp_Error( test, correct2  ); err3 =
         Ulp_Error( test, correct3  ); err4 = Ulp_Error( test, correct4  ); err5
         = Ulp_Error( test, correct5  ); float err6 = Ulp_Error( test, correct6
         ); float err7 = Ulp_Error( test, correct7  ); float err8 = Ulp_Error(
         test, correct8  ); float err9 = Ulp_Error( test, correct9  ); fail =
         fail && ((!(fabsf(err2) <= f->float_ulps)) && (!(fabsf(err3) <=
         f->float_ulps)) &&
                                                             (!(fabsf(err4) <=
         f->float_ulps)) && (!(fabsf(err5) <= f->float_ulps)) &&
                                                             (!(fabsf(err5) <=
         f->float_ulps)) && (!(fabsf(err6) <= f->float_ulps)) &&
                                                             (!(fabsf(err7) <=
         f->float_ulps)) && (!(fabsf(err8) <= f->float_ulps))); if( fabsf( err2
         ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) ) err =
         err3; if( fabsf( err4 ) < fabsf(err ) ) err = err4; if( fabsf( err5 ) <
         fabsf(err ) ) err = err5; if( fabsf( err6 ) < fabsf(err ) ) err = err6;
                                            if( fabsf( err7 ) < fabsf(err ) )
                                                err = err7;
                                            if( fabsf( err8 ) < fabsf(err ) )
                                                err = err8;
                                            if( fabsf( err9 ) < fabsf(err ) )
                                                err = err9;

                                            // retry per section 6.5.3.4
                                            if( IsFloatResultSubnormal(correct2,
         f->float_ulps ) || IsFloatResultSubnormal(correct3, f->float_ulps )  ||
                                                IsFloatResultSubnormal(correct4,
         f->float_ulps ) || IsFloatResultSubnormal(correct5, f->float_ulps )  ||
                                                IsFloatResultSubnormal(
         correct6, f->float_ulps ) || IsFloatResultSubnormal(correct7,
         f->float_ulps )  || IsFloatResultSubnormal(correct8, f->float_ulps ) ||
         IsFloatResultSubnormal( correct9, f->float_ulps )  )
                                            {
                                                fail = fail && ( test != 0.0f);
                                                if( ! fail )
                                                    err = 0.0f;
                                            }
                                        }
                                    }
                                    else if( IsFloatSubnormal( s3[j] ) )
                                    {
                                        correct2 = f->func.f_fff( 0.0, s2[j],
         0.0 ); correct3 = f->func.f_fff( -0.0, s2[j], 0.0 ); double correct4 =
         f->func.f_fff( 0.0,  s2[j], -0.0 ); double correct5 = f->func.f_fff(
         -0.0, s2[j], -0.0 ); err2 = Ulp_Error( test, correct2  ); err3 =
         Ulp_Error( test, correct3  ); float err4 = Ulp_Error( test, correct4 );
                                        float err5 = Ulp_Error( test, correct5
         ); fail =  fail && ((!(fabsf(err2) <= f->float_ulps)) && (!(fabsf(err3)
         <= f->float_ulps)) &&
                                                         (!(fabsf(err4) <=
         f->float_ulps)) && (!(fabsf(err5) <= f->float_ulps))); if( fabsf( err2
         ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) ) err =
         err3; if( fabsf( err4 ) < fabsf(err ) ) err = err4; if( fabsf( err5 ) <
         fabsf(err ) ) err = err5;

                                        // retry per section 6.5.3.4
                                        if( IsFloatResultSubnormal(correct2,
         f->float_ulps ) || IsFloatResultSubnormal(correct3, f->float_ulps )  ||
                                            IsFloatResultSubnormal(correct4,
         f->float_ulps ) || IsFloatResultSubnormal(correct5, f->float_ulps ) )
                                        {
                                            fail = fail && ( test != 0.0f);
                                            if( ! fail )
                                                err = 0.0f;
                                        }
                                    }
                                }
                                else if( fail && IsFloatSubnormal( s2[j] ) )
                                {
                                    double correct2 = f->func.f_fff( s[j], 0.0,
         s3[j] ); double correct3 = f->func.f_fff( s[j], -0.0, s3[j] ); float
         err2 = Ulp_Error( test, correct2  ); float err3 = Ulp_Error( test,
         correct3  ); fail =  fail && ((!(fabsf(err2) <= f->float_ulps)) &&
         (!(fabsf(err3) <= f->float_ulps))); if( fabsf( err2 ) < fabsf(err ) )
                                        err = err2;
                                    if( fabsf( err3 ) < fabsf(err ) )
                                        err = err3;

                                    // retry per section 6.5.3.4
                                    if( IsFloatResultSubnormal(correct2,
         f->float_ulps )  || IsFloatResultSubnormal(correct3, f->float_ulps ) )
                                    {
                                        fail = fail && ( test != 0.0f);
                                        if( ! fail )
                                            err = 0.0f;
                                    }

                                    //try with second two args as zero
                                    if( IsFloatSubnormal( s3[j] ) )
                                    {
                                        correct2 = f->func.f_fff( s[j], 0.0, 0.0
         ); correct3 = f->func.f_fff( s[j], -0.0, 0.0 ); double correct4 =
         f->func.f_fff( s[j], 0.0, -0.0 ); double correct5 = f->func.f_fff(
         s[j], -0.0, -0.0 ); err2 = Ulp_Error( test, correct2  ); err3 =
         Ulp_Error( test, correct3  ); float err4 = Ulp_Error( test, correct4 );
                                        float err5 = Ulp_Error( test, correct5
         ); fail =  fail && ((!(fabsf(err2) <= f->float_ulps)) && (!(fabsf(err3)
         <= f->float_ulps)) &&
                                                         (!(fabsf(err4) <=
         f->float_ulps)) && (!(fabsf(err5) <= f->float_ulps))); if( fabsf( err2
         ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) ) err =
         err3; if( fabsf( err4 ) < fabsf(err ) ) err = err4; if( fabsf( err5 ) <
         fabsf(err ) ) err = err5;

                                        // retry per section 6.5.3.4
                                        if( IsFloatResultSubnormal(correct2,
         f->float_ulps ) || IsFloatResultSubnormal(correct3, f->float_ulps ) ||
                                            IsFloatResultSubnormal(correct4,
         f->float_ulps ) || IsFloatResultSubnormal(correct5, f->float_ulps ) )
                                        {
                                            fail = fail && ( test != 0.0f);
                                            if( ! fail )
                                                err = 0.0f;
                                        }
                                    }
                                }
                                else if( fail && IsFloatSubnormal(s3[j]) )
                                {
                                    double correct2 = f->func.f_fff( s[j],
         s2[j], 0.0 ); double correct3 = f->func.f_fff( s[j], s2[j], -0.0 );
                                    float err2 = Ulp_Error( test, correct2  );
                                    float err3 = Ulp_Error( test, correct3  );
                                    fail =  fail && ((!(fabsf(err2) <=
         f->float_ulps)) && (!(fabsf(err3) <= f->float_ulps))); if( fabsf( err2
         ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) ) err =
         err3;

                                    // retry per section 6.5.3.4
                                    if( IsFloatResultSubnormal(correct2,
         f->float_ulps ) || IsFloatResultSubnormal(correct3, f->float_ulps ) )
                                    {
                                        fail = fail && ( test != 0.0f);
                                        if( ! fail )
                                            err = 0.0f;
                                    }
                                }
                            }

                            if( fabsf(err ) > maxError )
                            {
                                maxError = fabsf(err);
                                maxErrorVal = s[j];
                                maxErrorVal2 = s2[j];
                                maxErrorVal3 = s3[j];
                            }

                            if( fail )
                            {
                                vlog_error( "\nERROR: %s%s: %f ulp error at {%a,
         %a, %a}: *%a vs. %a\n", f->name, sizeNames[k], err, s[j], s2[j], s3[j],
         ((float*) gOut_Ref)[j], test ); error = -1; goto exit;
                            }
                        }
                    }
                }
        */
        if (0 == (i & 0x0fffffff))
        {
            vlog(".");
            fflush(stdout);
        }
    }

    if (!gSkipCorrectnessTesting)
    {
        if (gWimpyMode)
            vlog("Wimp pass");
        else
            vlog("pass");
    }

    if (gMeasureTimes)
    {
        // Init input array
        uint32_t *p = (uint32_t *)gIn;
        uint32_t *p2 = (uint32_t *)gIn2;
        uint32_t *p3 = (uint32_t *)gIn3;
        for (j = 0; j < bufferSize / sizeof(float); j++)
        {
            p[j] = genrand_int32(d);
            p2[j] = genrand_int32(d);
            p3[j] = genrand_int32(d);
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer, CL_FALSE, 0,
                                          bufferSize, gIn, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer ***\n", error);
            return error;
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer2, CL_FALSE, 0,
                                          bufferSize, gIn2, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer2 ***\n", error);
            return error;
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer3, CL_FALSE, 0,
                                          bufferSize, gIn3, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer3 ***\n", error);
            return error;
        }


        // Run the kernels
        for (j = gMinVectorSizeIndex; j < gMaxVectorSizeIndex; j++)
        {
            size_t vectorSize = sizeof(cl_float) * sizeValues[j];
            size_t localCount = (bufferSize + vectorSize - 1)
                / vectorSize; // bufferSize / vectorSize  rounded up
            if ((error = clSetKernelArg(kernels[j], 0, sizeof(gOutBuffer[j]),
                                        &gOutBuffer[j])))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 1, sizeof(gInBuffer),
                                        &gInBuffer)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 2, sizeof(gInBuffer2),
                                        &gInBuffer2)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 3, sizeof(gInBuffer3),
                                        &gInBuffer3)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }

            double sum = 0.0;
            double bestTime = INFINITY;
            for (k = 0; k < PERF_LOOP_COUNT; k++)
            {
                uint64_t startTime = GetTime();
                if ((error = clEnqueueNDRangeKernel(gQueue, kernels[j], 1, NULL,
                                                    &localCount, NULL, 0, NULL,
                                                    NULL)))
                {
                    vlog_error("FAILED -- could not execute kernel\n");
                    goto exit;
                }

                // Make sure OpenCL is done
                if ((error = clFinish(gQueue)))
                {
                    vlog_error("Error %d at clFinish\n", error);
                    goto exit;
                }

                uint64_t endTime = GetTime();
                double time = SubtractTime(endTime, startTime);
                sum += time;
                if (time < bestTime) bestTime = time;
            }

            if (gReportAverageTimes) bestTime = sum / PERF_LOOP_COUNT;
            double clocksPerOp = bestTime * (double)gDeviceFrequency
                * gComputeDevices * gSimdSize * 1e6
                / (bufferSize / sizeof(float));
            vlog_perf(clocksPerOp, LOWER_IS_BETTER, "clocks / element", "%sf%s",
                      f->name, sizeNames[j]);
        }
    }

    if (!gSkipCorrectnessTesting)
        vlog("\t%8.2f @ {%a, %a, %a}", maxError, maxErrorVal, maxErrorVal2,
             maxErrorVal3);
    vlog("\n");

exit:
    // Release
    for (k = gMinVectorSizeIndex; k < gMaxVectorSizeIndex; k++)
    {
        clReleaseKernel(kernels[k]);
        clReleaseProgram(programs[k]);
    }

    return error;
}

int TestFunc_mad_Double(const Func *f, MTdata d, bool relaxedMode)
{
    uint64_t i;
    uint32_t j, k;
    int error;
    cl_program programs[VECTOR_SIZE_COUNT];
    cl_kernel kernels[VECTOR_SIZE_COUNT];
    float maxError = 0.0f;
    //    int ftz = f->ftz || gForceFTZ;
    double maxErrorVal = 0.0f;
    double maxErrorVal2 = 0.0f;
    double maxErrorVal3 = 0.0f;
    size_t bufferSize = (gWimpyMode) ? gWimpyBufferSize : BUFFER_SIZE;

    logFunctionInfo(f->name, sizeof(cl_double), relaxedMode);
    uint64_t step = getTestStep(sizeof(double), bufferSize);

    // Init the kernels
    BuildKernelInfo build_info = { gMinVectorSizeIndex, kernels, programs,
                                   f->nameInCode, relaxedMode };
    if ((error = ThreadPool_Do(BuildKernel_DoubleFn,
                               gMaxVectorSizeIndex - gMinVectorSizeIndex,
                               &build_info)))
    {
        return error;
    }
    /*
        for( i = gMinVectorSizeIndex; i < gMaxVectorSizeIndex; i++ )
            if( (error =  BuildKernelDouble( f->nameInCode, (int) i, kernels +
       i, programs + i) ) ) return error;
    */

    for (i = 0; i < (1ULL << 32); i += step)
    {
        // Init input array
        double *p = (double *)gIn;
        double *p2 = (double *)gIn2;
        double *p3 = (double *)gIn3;
        for (j = 0; j < bufferSize / sizeof(double); j++)
        {
            p[j] = DoubleFromUInt32(genrand_int32(d));
            p2[j] = DoubleFromUInt32(genrand_int32(d));
            p3[j] = DoubleFromUInt32(genrand_int32(d));
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer, CL_FALSE, 0,
                                          bufferSize, gIn, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer ***\n", error);
            return error;
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer2, CL_FALSE, 0,
                                          bufferSize, gIn2, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer2 ***\n", error);
            return error;
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer3, CL_FALSE, 0,
                                          bufferSize, gIn3, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer3 ***\n", error);
            return error;
        }

        // write garbage into output arrays
        for (j = gMinVectorSizeIndex; j < gMaxVectorSizeIndex; j++)
        {
            uint32_t pattern = 0xffffdead;
            memset_pattern4(gOut[j], &pattern, bufferSize);
            if ((error =
                     clEnqueueWriteBuffer(gQueue, gOutBuffer[j], CL_FALSE, 0,
                                          bufferSize, gOut[j], 0, NULL, NULL)))
            {
                vlog_error("\n*** Error %d in clEnqueueWriteBuffer2(%d) ***\n",
                           error, j);
                goto exit;
            }
        }

        // Run the kernels
        for (j = gMinVectorSizeIndex; j < gMaxVectorSizeIndex; j++)
        {
            size_t vectorSize = sizeof(cl_double) * sizeValues[j];
            size_t localCount = (bufferSize + vectorSize - 1)
                / vectorSize; // bufferSize / vectorSize  rounded up
            if ((error = clSetKernelArg(kernels[j], 0, sizeof(gOutBuffer[j]),
                                        &gOutBuffer[j])))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 1, sizeof(gInBuffer),
                                        &gInBuffer)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 2, sizeof(gInBuffer2),
                                        &gInBuffer2)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 3, sizeof(gInBuffer3),
                                        &gInBuffer3)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }

            if ((error =
                     clEnqueueNDRangeKernel(gQueue, kernels[j], 1, NULL,
                                            &localCount, NULL, 0, NULL, NULL)))
            {
                vlog_error("FAILED -- could not execute kernel\n");
                goto exit;
            }
        }

        // Get that moving
        if ((error = clFlush(gQueue))) vlog("clFlush failed\n");

        // Calculate the correctly rounded reference result
        double *r = (double *)gOut_Ref;
        double *s = (double *)gIn;
        double *s2 = (double *)gIn2;
        double *s3 = (double *)gIn3;
        for (j = 0; j < bufferSize / sizeof(double); j++)
            r[j] = (double)f->dfunc.f_fff(s[j], s2[j], s3[j]);

        // Read the data back
        for (j = gMinVectorSizeIndex; j < gMaxVectorSizeIndex; j++)
        {
            if ((error =
                     clEnqueueReadBuffer(gQueue, gOutBuffer[j], CL_TRUE, 0,
                                         bufferSize, gOut[j], 0, NULL, NULL)))
            {
                vlog_error("ReadArray failed %d\n", error);
                goto exit;
            }
        }

        if (gSkipCorrectnessTesting) break;

        // Verify data  -- Commented out on purpose. no verification possible.
        // MAD is a random number generator.
        /*
                uint64_t *t = gOut_Ref;
                for( j = 0; j < bufferSize / sizeof( double ); j++ )
                {
                    for( k = gMinVectorSizeIndex; k < gMaxVectorSizeIndex; k++ )
                    {
                        uint64_t *q = gOut[k];

                        // If we aren't getting the correctly rounded result
                        if( t[j] != q[j] )
                        {
                            double test = ((double*) q)[j];
                            long double correct = f->dfunc.f_fff( s[j], s2[j],
         s3[j] ); float err = Bruteforce_Ulp_Error_Double( test, correct ); int
         fail = ! (fabsf(err) <= f->double_ulps);

                            if( fail && ftz )
                            {
                                // retry per section 6.5.3.2
                                if( IsDoubleResultSubnormal(correct,
         f->double_ulps) ) { // look at me, fail = fail && ( test != 0.0f ); if(
         ! fail ) err = 0.0f;
                                }

                                // retry per section 6.5.3.3
                                if( fail && IsDoubleSubnormal( s[j] ) )
                                { // look at me,
                                    long double correct2 = f->dfunc.f_fff( 0.0,
         s2[j], s3[j] ); long double correct3 = f->dfunc.f_fff( -0.0, s2[j],
         s3[j] ); float err2 = Bruteforce_Ulp_Error_Double( test, correct2  );
                                    float err3 = Bruteforce_Ulp_Error_Double(
         test, correct3  ); fail =  fail && ((!(fabsf(err2) <= f->double_ulps))
         && (!(fabsf(err3) <= f->double_ulps))); if( fabsf( err2 ) < fabsf(err )
         ) err = err2; if( fabsf( err3 ) < fabsf(err ) ) err = err3;

                                    // retry per section 6.5.3.4
                                    if( IsDoubleResultSubnormal( correct2,
         f->double_ulps ) || IsDoubleResultSubnormal( correct3, f->double_ulps )
         ) { // look at me now, fail = fail && ( test != 0.0f); if( ! fail ) err
         = 0.0f;
                                    }

                                    //try with first two args as zero
                                    if( IsDoubleSubnormal( s2[j] ) )
                                    { // its fun to have fun,
                                        correct2 = f->dfunc.f_fff( 0.0, 0.0,
         s3[j] ); correct3 = f->dfunc.f_fff( -0.0, 0.0, s3[j] ); long double
         correct4 = f->dfunc.f_fff( 0.0, -0.0, s3[j] ); long double correct5 =
         f->dfunc.f_fff( -0.0, -0.0, s3[j] ); err2 =
         Bruteforce_Ulp_Error_Double( test, correct2  ); err3 =
         Bruteforce_Ulp_Error_Double( test, correct3  ); float err4 =
         Bruteforce_Ulp_Error_Double( test, correct4  ); float err5 =
         Bruteforce_Ulp_Error_Double( test, correct5  ); fail =  fail &&
         ((!(fabsf(err2) <= f->double_ulps)) && (!(fabsf(err3) <=
         f->double_ulps)) &&
                                                         (!(fabsf(err4) <=
         f->double_ulps)) && (!(fabsf(err5) <= f->double_ulps))); if( fabsf(
         err2 ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) )
                                            err = err3;
                                        if( fabsf( err4 ) < fabsf(err ) )
                                            err = err4;
                                        if( fabsf( err5 ) < fabsf(err ) )
                                            err = err5;

                                        // retry per section 6.5.3.4
                                        if( IsDoubleResultSubnormal( correct2,
         f->double_ulps ) || IsDoubleResultSubnormal( correct3, f->double_ulps )
         || IsDoubleResultSubnormal( correct4, f->double_ulps ) ||
         IsDoubleResultSubnormal( correct5, f->double_ulps ) )
                                        {
                                            fail = fail && ( test != 0.0f);
                                            if( ! fail )
                                                err = 0.0f;
                                        }

                                        if( IsDoubleSubnormal( s3[j] )  )
                                        { // but you have to know how!
                                            correct2 = f->dfunc.f_fff( 0.0, 0.0,
         0.0f ); correct3 = f->dfunc.f_fff( -0.0, 0.0, 0.0f ); correct4 =
         f->dfunc.f_fff( 0.0, -0.0, 0.0f ); correct5 = f->dfunc.f_fff( -0.0,
         -0.0, 0.0f ); long double correct6 = f->dfunc.f_fff( 0.0, 0.0, -0.0f );
                                            long double correct7 =
         f->dfunc.f_fff( -0.0, 0.0, -0.0f ); long double correct8 =
         f->dfunc.f_fff( 0.0, -0.0, -0.0f ); long double correct9 =
         f->dfunc.f_fff( -0.0, -0.0, -0.0f ); err2 =
         Bruteforce_Ulp_Error_Double( test, correct2  ); err3 =
         Bruteforce_Ulp_Error_Double( test, correct3  ); err4 =
         Bruteforce_Ulp_Error_Double( test, correct4  ); err5 =
         Bruteforce_Ulp_Error_Double( test, correct5  ); float err6 =
         Bruteforce_Ulp_Error_Double( test, correct6  ); float err7 =
         Bruteforce_Ulp_Error_Double( test, correct7  ); float err8 =
         Bruteforce_Ulp_Error_Double( test, correct8  ); float err9 =
         Bruteforce_Ulp_Error_Double( test, correct9  ); fail =  fail &&
         ((!(fabsf(err2) <= f->double_ulps)) && (!(fabsf(err3) <=
         f->double_ulps)) &&
                                                             (!(fabsf(err4) <=
         f->double_ulps)) && (!(fabsf(err5) <= f->double_ulps)) &&
                                                             (!(fabsf(err5) <=
         f->double_ulps)) && (!(fabsf(err6) <= f->double_ulps)) &&
                                                             (!(fabsf(err7) <=
         f->double_ulps)) && (!(fabsf(err8) <= f->double_ulps))); if( fabsf(
         err2 ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) )
                                                err = err3;
                                            if( fabsf( err4 ) < fabsf(err ) )
                                                err = err4;
                                            if( fabsf( err5 ) < fabsf(err ) )
                                                err = err5;
                                            if( fabsf( err6 ) < fabsf(err ) )
                                                err = err6;
                                            if( fabsf( err7 ) < fabsf(err ) )
                                                err = err7;
                                            if( fabsf( err8 ) < fabsf(err ) )
                                                err = err8;
                                            if( fabsf( err9 ) < fabsf(err ) )
                                                err = err9;

                                            // retry per section 6.5.3.4
                                            if( IsDoubleResultSubnormal(
         correct2, f->double_ulps ) || IsDoubleResultSubnormal( correct3,
         f->double_ulps )  || IsDoubleResultSubnormal( correct4, f->double_ulps
         ) || IsDoubleResultSubnormal( correct5, f->double_ulps )  ||
                                                IsDoubleResultSubnormal(
         correct6, f->double_ulps ) || IsDoubleResultSubnormal( correct7,
         f->double_ulps )  || IsDoubleResultSubnormal( correct8, f->double_ulps
         ) || IsDoubleResultSubnormal( correct9, f->double_ulps )  )
                                            {
                                                fail = fail && ( test != 0.0f);
                                                if( ! fail )
                                                    err = 0.0f;
                                            }
                                        }
                                    }
                                    else if( IsDoubleSubnormal( s3[j] ) )
                                    {
                                        correct2 = f->dfunc.f_fff( 0.0, s2[j],
         0.0 ); correct3 = f->dfunc.f_fff( -0.0, s2[j], 0.0 ); long double
         correct4 = f->dfunc.f_fff( 0.0,  s2[j], -0.0 ); long double correct5 =
         f->dfunc.f_fff( -0.0, s2[j], -0.0 ); err2 =
         Bruteforce_Ulp_Error_Double( test, correct2  ); err3 =
         Bruteforce_Ulp_Error_Double( test, correct3  ); float err4 =
         Bruteforce_Ulp_Error_Double( test, correct4  ); float err5 =
         Bruteforce_Ulp_Error_Double( test, correct5  ); fail =  fail &&
         ((!(fabsf(err2) <= f->double_ulps)) && (!(fabsf(err3) <=
         f->double_ulps)) &&
                                                         (!(fabsf(err4) <=
         f->double_ulps)) && (!(fabsf(err5) <= f->double_ulps))); if( fabsf(
         err2 ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) )
                                            err = err3;
                                        if( fabsf( err4 ) < fabsf(err ) )
                                            err = err4;
                                        if( fabsf( err5 ) < fabsf(err ) )
                                            err = err5;

                                        // retry per section 6.5.3.4
                                        if( IsDoubleResultSubnormal( correct2,
         f->double_ulps ) || IsDoubleResultSubnormal( correct3, f->double_ulps )
         || IsDoubleResultSubnormal( correct4, f->double_ulps ) ||
         IsDoubleResultSubnormal( correct5, f->double_ulps ) )
                                        {
                                            fail = fail && ( test != 0.0f);
                                            if( ! fail )
                                                err = 0.0f;
                                        }
                                    }
                                }
                                else if( fail && IsDoubleSubnormal( s2[j] ) )
                                {
                                    long double correct2 = f->dfunc.f_fff( s[j],
         0.0, s3[j] ); long double correct3 = f->dfunc.f_fff( s[j], -0.0, s3[j]
         ); float err2 = Bruteforce_Ulp_Error_Double( test, correct2  ); float
         err3 = Bruteforce_Ulp_Error_Double( test, correct3  ); fail =  fail &&
         ((!(fabsf(err2) <= f->double_ulps)) && (!(fabsf(err3) <=
         f->double_ulps))); if( fabsf( err2 ) < fabsf(err ) ) err = err2; if(
         fabsf( err3 ) < fabsf(err ) ) err = err3;

                                    // retry per section 6.5.3.4
                                    if( IsDoubleResultSubnormal( correct2,
         f->double_ulps )  || IsDoubleResultSubnormal( correct3, f->double_ulps
         ) )
                                    {
                                        fail = fail && ( test != 0.0f);
                                        if( ! fail )
                                            err = 0.0f;
                                    }

                                    //try with second two args as zero
                                    if( IsDoubleSubnormal( s3[j] ) )
                                    {
                                        correct2 = f->dfunc.f_fff( s[j], 0.0,
         0.0 ); correct3 = f->dfunc.f_fff( s[j], -0.0, 0.0 ); long double
         correct4 = f->dfunc.f_fff( s[j], 0.0, -0.0 ); long double correct5 =
         f->dfunc.f_fff( s[j], -0.0, -0.0 ); err2 = Bruteforce_Ulp_Error_Double(
         test, correct2  ); err3 = Bruteforce_Ulp_Error_Double( test, correct3
         ); float err4 = Bruteforce_Ulp_Error_Double( test, correct4  ); float
         err5 = Bruteforce_Ulp_Error_Double( test, correct5  ); fail =  fail &&
         ((!(fabsf(err2) <= f->double_ulps)) && (!(fabsf(err3) <=
         f->double_ulps)) &&
                                                         (!(fabsf(err4) <=
         f->double_ulps)) && (!(fabsf(err5) <= f->double_ulps))); if( fabsf(
         err2 ) < fabsf(err ) ) err = err2; if( fabsf( err3 ) < fabsf(err ) )
                                            err = err3;
                                        if( fabsf( err4 ) < fabsf(err ) )
                                            err = err4;
                                        if( fabsf( err5 ) < fabsf(err ) )
                                            err = err5;

                                        // retry per section 6.5.3.4
                                        if( IsDoubleResultSubnormal( correct2,
         f->double_ulps ) || IsDoubleResultSubnormal( correct3, f->double_ulps )
         || IsDoubleResultSubnormal( correct4, f->double_ulps ) ||
         IsDoubleResultSubnormal( correct5, f->double_ulps ) )
                                        {
                                            fail = fail && ( test != 0.0f);
                                            if( ! fail )
                                                err = 0.0f;
                                        }
                                    }
                                }
                                else if( fail && IsDoubleSubnormal(s3[j]) )
                                {
                                    long double correct2 = f->dfunc.f_fff( s[j],
         s2[j], 0.0 ); long double correct3 = f->dfunc.f_fff( s[j], s2[j], -0.0
         ); float err2 = Bruteforce_Ulp_Error_Double( test, correct2  ); float
         err3 = Bruteforce_Ulp_Error_Double( test, correct3  ); fail =  fail &&
         ((!(fabsf(err2) <= f->double_ulps)) && (!(fabsf(err3) <=
         f->double_ulps))); if( fabsf( err2 ) < fabsf(err ) ) err = err2; if(
         fabsf( err3 ) < fabsf(err ) ) err = err3;

                                    // retry per section 6.5.3.4
                                    if( IsDoubleResultSubnormal( correct2,
         f->double_ulps ) || IsDoubleResultSubnormal( correct3, f->double_ulps )
         )
                                    {
                                        fail = fail && ( test != 0.0f);
                                        if( ! fail )
                                            err = 0.0f;
                                    }
                                }
                            }

                            if( fabsf(err ) > maxError )
                            {
                                maxError = fabsf(err);
                                maxErrorVal = s[j];
                                maxErrorVal2 = s2[j];
                                maxErrorVal3 = s3[j];
                            }

                            if( fail )
                            {
                                vlog_error( "\nERROR: %sD%s: %f ulp error at
         {%a, %a, %a}: *%a vs. %a\n", f->name, sizeNames[k], err, s[j], s2[j],
         s3[j], ((double*) gOut_Ref)[j], test ); error = -1; goto exit;
                            }
                        }
                    }
                }
        */
        if (0 == (i & 0x0fffffff))
        {
            vlog(".");
            fflush(stdout);
        }
    }

    if (!gSkipCorrectnessTesting)
    {
        if (gWimpyMode)
            vlog("Wimp pass");
        else
            vlog("pass");
    }

    if (gMeasureTimes)
    {
        // Init input array
        double *p = (double *)gIn;
        double *p2 = (double *)gIn2;
        double *p3 = (double *)gIn3;
        for (j = 0; j < bufferSize / sizeof(double); j++)
        {
            p[j] = DoubleFromUInt32(genrand_int32(d));
            p2[j] = DoubleFromUInt32(genrand_int32(d));
            p3[j] = DoubleFromUInt32(genrand_int32(d));
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer, CL_FALSE, 0,
                                          bufferSize, gIn, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer ***\n", error);
            return error;
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer2, CL_FALSE, 0,
                                          bufferSize, gIn2, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer2 ***\n", error);
            return error;
        }
        if ((error = clEnqueueWriteBuffer(gQueue, gInBuffer3, CL_FALSE, 0,
                                          bufferSize, gIn3, 0, NULL, NULL)))
        {
            vlog_error("\n*** Error %d in clEnqueueWriteBuffer3 ***\n", error);
            return error;
        }


        // Run the kernels
        for (j = gMinVectorSizeIndex; j < gMaxVectorSizeIndex; j++)
        {
            size_t vectorSize = sizeof(cl_double) * sizeValues[j];
            size_t localCount = (bufferSize + vectorSize - 1)
                / vectorSize; // bufferSize / vectorSize  rounded up
            if ((error = clSetKernelArg(kernels[j], 0, sizeof(gOutBuffer[j]),
                                        &gOutBuffer[j])))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 1, sizeof(gInBuffer),
                                        &gInBuffer)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 2, sizeof(gInBuffer2),
                                        &gInBuffer2)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }
            if ((error = clSetKernelArg(kernels[j], 3, sizeof(gInBuffer3),
                                        &gInBuffer3)))
            {
                LogBuildError(programs[j]);
                goto exit;
            }

            double sum = 0.0;
            double bestTime = INFINITY;
            for (k = 0; k < PERF_LOOP_COUNT; k++)
            {
                uint64_t startTime = GetTime();
                if ((error = clEnqueueNDRangeKernel(gQueue, kernels[j], 1, NULL,
                                                    &localCount, NULL, 0, NULL,
                                                    NULL)))
                {
                    vlog_error("FAILED -- could not execute kernel\n");
                    goto exit;
                }

                // Make sure OpenCL is done
                if ((error = clFinish(gQueue)))
                {
                    vlog_error("Error %d at clFinish\n", error);
                    goto exit;
                }

                uint64_t endTime = GetTime();
                double time = SubtractTime(endTime, startTime);
                sum += time;
                if (time < bestTime) bestTime = time;
            }

            if (gReportAverageTimes) bestTime = sum / PERF_LOOP_COUNT;
            double clocksPerOp = bestTime * (double)gDeviceFrequency
                * gComputeDevices * gSimdSize * 1e6
                / (bufferSize / sizeof(double));
            vlog_perf(clocksPerOp, LOWER_IS_BETTER, "clocks / element", "%sD%s",
                      f->name, sizeNames[j]);
        }
        for (; j < gMaxVectorSizeIndex; j++) vlog("\t     -- ");
    }

    if (!gSkipCorrectnessTesting)
        vlog("\t%8.2f @ {%a, %a, %a}", maxError, maxErrorVal, maxErrorVal2,
             maxErrorVal3);
    vlog("\n");

exit:
    // Release
    for (k = gMinVectorSizeIndex; k < gMaxVectorSizeIndex; k++)
    {
        clReleaseKernel(kernels[k]);
        clReleaseProgram(programs[k]);
    }

    return error;
}