/*
Copyright 2021 Advanced Micro Devices, Inc. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

#include <assert.h>
#include <hip/hip_complex.h>
#include <hip/hip_runtime.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <vector>

#define ROCM_MATHLIBS_API_USE_HIP_COMPLEX
#include <hipblas.h>

#ifndef CHECK_HIP_ERROR
#define CHECK_HIP_ERROR(error)                    \
    if(error != hipSuccess)                       \
    {                                             \
        fprintf(stderr,                           \
                "Hip error: '%s'(%d) at %s:%d\n", \
                hipGetErrorString(error),         \
                error,                            \
                __FILE__,                         \
                __LINE__);                        \
        exit(EXIT_FAILURE);                       \
    }
#endif

#ifndef CHECK_HIPBLAS_ERROR
#define CHECK_HIPBLAS_ERROR(error)                              \
    if(error != HIPBLAS_STATUS_SUCCESS)                         \
    {                                                           \
        fprintf(stderr, "hipBLAS error: ");                     \
        if(error == HIPBLAS_STATUS_NOT_INITIALIZED)             \
            fprintf(stderr, "HIPBLAS_STATUS_NOT_INITIALIZED");  \
        if(error == HIPBLAS_STATUS_ALLOC_FAILED)                \
            fprintf(stderr, "HIPBLAS_STATUS_ALLOC_FAILED");     \
        if(error == HIPBLAS_STATUS_INVALID_VALUE)               \
            fprintf(stderr, "HIPBLAS_STATUS_INVALID_VALUE");    \
        if(error == HIPBLAS_STATUS_MAPPING_ERROR)               \
            fprintf(stderr, "HIPBLAS_STATUS_MAPPING_ERROR");    \
        if(error == HIPBLAS_STATUS_EXECUTION_FAILED)            \
            fprintf(stderr, "HIPBLAS_STATUS_EXECUTION_FAILED"); \
        if(error == HIPBLAS_STATUS_INTERNAL_ERROR)              \
            fprintf(stderr, "HIPBLAS_STATUS_INTERNAL_ERROR");   \
        if(error == HIPBLAS_STATUS_NOT_SUPPORTED)               \
            fprintf(stderr, "HIPBLAS_STATUS_NOT_SUPPORTED");    \
        if(error == HIPBLAS_STATUS_INVALID_ENUM)                \
            fprintf(stderr, "HIPBLAS_STATUS_INVALID_ENUM");     \
        if(error == HIPBLAS_STATUS_UNKNOWN)                     \
            fprintf(stderr, "HIPBLAS_STATUS_UNKNOWN");          \
        fprintf(stderr, "\n");                                  \
        exit(EXIT_FAILURE);                                     \
    }
#endif

int main(int argc, char** argv)
{
    int N = 267;
    if(argc > 1)
        N = atoi(argv[1]);

    size_t lda;
    size_t rows, cols;
    int    incx, incy;

    rows = N;
    cols = N;
    lda  = N;
    incx = incy = 1;

    size_t sizeA = size_t(cols) * lda;
    size_t sizeX = size_t(N) * incx;
    size_t sizeY = size_t(N) * incy;

    hipblasHandle_t handle;
    hipblasStatus_t rstatus = hipblasCreate(&handle);
    CHECK_HIPBLAS_ERROR(rstatus);

    std::vector<hipFloatComplex> hA(sizeA);
    std::vector<hipFloatComplex> hResult(sizeA);
    std::vector<hipFloatComplex> hX(sizeX);
    std::vector<hipFloatComplex> hY(sizeY);

    for(int i1 = 0; i1 < N; i1++)
    {
        hX[i1 * incx] = make_hipFloatComplex(1.0f, 0.0f);
        hY[i1 * incy] = make_hipFloatComplex(1.0f, 0.0f);
    }

    for(int i1 = 0; i1 < rows; i1++)
        for(int i2 = 0; i2 < cols; i2++)
            hA[i1 + i2 * lda] = make_hipFloatComplex((float)(rand() % 10), 0.0f);

    hipFloatComplex* dA = nullptr;
    hipFloatComplex* dX = nullptr;
    hipFloatComplex* dY = nullptr;
    CHECK_HIP_ERROR(hipMalloc((void**)&dA, sizeof(hipFloatComplex) * sizeA));
    CHECK_HIP_ERROR(hipMalloc((void**)&dX, sizeof(hipFloatComplex) * sizeX));
    CHECK_HIP_ERROR(hipMalloc((void**)&dY, sizeof(hipFloatComplex) * sizeY));

    // scalar arguments will be from host memory
    rstatus = hipblasSetPointerMode(handle, HIPBLAS_POINTER_MODE_HOST);
    CHECK_HIPBLAS_ERROR(rstatus);

    const hipblasFillMode_t uplo   = HIPBLAS_FILL_MODE_UPPER;
    hipFloatComplex         hAlpha = make_hipFloatComplex(2.0f, 0.0f);

    // copy data from CPU to device
    CHECK_HIP_ERROR(
        hipMemcpy(dX, hX.data(), sizeof(hipFloatComplex) * sizeX, hipMemcpyHostToDevice));
    CHECK_HIP_ERROR(
        hipMemcpy(dY, hY.data(), sizeof(hipFloatComplex) * sizeY, hipMemcpyHostToDevice));

    rstatus = hipblasSetMatrix(rows, cols, sizeof(hipFloatComplex), hA.data(), lda, dA, lda);
    CHECK_HIPBLAS_ERROR(rstatus);

    // asynchronous calculation on device, returns before finished calculations
    // API is defined as using hipFloatComplex types so no casting required
    rstatus = hipblasCher2(handle, uplo, N, &hAlpha, dX, incx, dY, incy, dA, lda);
    CHECK_HIPBLAS_ERROR(rstatus);

    // fetch results
    rstatus = hipblasGetMatrix(rows, cols, sizeof(hipFloatComplex), dA, lda, hResult.data(), lda);
    CHECK_HIPBLAS_ERROR(rstatus);

    // check against expected results for upper and numeric inputs
    bool fail = false;
    for(size_t i1 = 0; i1 < rows; i1++)
        for(size_t i2 = 0; i2 < cols; i2++)
        {
            hipFloatComplex tmp
                = hipCaddf(hA[i1 + i2 * lda], make_hipFloatComplex(4.0 * hX[i1 * incx].x, 0.0f));
            if(i1 <= i2 && (hResult[i1 + i2 * lda].x != tmp.x || hResult[i1 + i2 * lda].y != tmp.y))
                fail = true;
        }
    CHECK_HIP_ERROR(hipFree(dA));
    CHECK_HIP_ERROR(hipFree(dX));
    CHECK_HIP_ERROR(hipFree(dY));

    rstatus = hipblasDestroy(handle);
    CHECK_HIPBLAS_ERROR(rstatus);

    fprintf(stdout, "%s\n", fail ? "FAIL" : "PASS");

    return 0;
}