/* ************************************************************************
 * Copyright 2016-2020 Advanced Micro Devices, Inc.
 * ************************************************************************ */

#include "handle.hpp"
#include "logging.hpp"
#include "rocblas.h"
#include "rocblas_geam.hpp"
#include "utility.hpp"

namespace
{
    template <typename>
    constexpr char rocblas_geam_batched_name[] = "unknown";
    template <>
    constexpr char rocblas_geam_batched_name<float>[] = "rocblas_sgeam_batched";
    template <>
    constexpr char rocblas_geam_batched_name<double>[] = "rocblas_dgeam_batched";
    template <>
    constexpr char rocblas_geam_batched_name<rocblas_float_complex>[] = "rocblas_cgeam_batched";
    template <>
    constexpr char rocblas_geam_batched_name<rocblas_double_complex>[] = "rocblas_zgeam_batched";

    template <typename T>
    rocblas_status rocblas_geam_batched_impl(rocblas_handle    handle,
                                             rocblas_operation transA,
                                             rocblas_operation transB,
                                             rocblas_int       m,
                                             rocblas_int       n,
                                             const T*          alpha,
                                             const T* const    A[],
                                             rocblas_int       lda,
                                             const T*          beta,
                                             const T* const    B[],
                                             rocblas_int       ldb,
                                             T* const          C[],
                                             rocblas_int       ldc,
                                             rocblas_int       batch_count)
    {
        if(!handle)
            return rocblas_status_invalid_handle;

        RETURN_ZERO_DEVICE_MEMORY_SIZE_IF_QUERIED(handle);

        auto layer_mode = handle->layer_mode;

        if(layer_mode
           & (rocblas_layer_mode_log_trace | rocblas_layer_mode_log_bench
              | rocblas_layer_mode_log_profile))
        {
            auto transA_letter = rocblas_transpose_letter(transA);
            auto transB_letter = rocblas_transpose_letter(transB);

            if(layer_mode & rocblas_layer_mode_log_trace)
                log_trace(handle,
                          rocblas_geam_batched_name<T>,
                          transA,
                          transB,
                          m,
                          n,
                          LOG_TRACE_SCALAR_VALUE(handle, alpha),
                          A,
                          lda,
                          LOG_TRACE_SCALAR_VALUE(handle, beta),
                          B,
                          ldb,
                          C,
                          ldc,
                          batch_count);

            if(layer_mode & rocblas_layer_mode_log_bench)
                log_bench(handle,
                          "./rocblas-bench -f geam_batched -r",
                          rocblas_precision_string<T>,
                          "--transposeA",
                          transA_letter,
                          "--transposeB",
                          transB_letter,
                          "-m",
                          m,
                          "-n",
                          n,
                          LOG_BENCH_SCALAR_VALUE(handle, alpha),
                          "--lda",
                          lda,
                          LOG_BENCH_SCALAR_VALUE(handle, beta),
                          "--ldb",
                          ldb,
                          "--ldc",
                          ldc,
                          "--batch_count",
                          batch_count);

            if(layer_mode & rocblas_layer_mode_log_profile)
                log_profile(handle,
                            rocblas_geam_batched_name<T>,
                            "transA",
                            transA_letter,
                            "transB",
                            transB_letter,
                            "M",
                            m,
                            "N",
                            n,
                            "lda",
                            lda,
                            "ldb",
                            ldb,
                            "ldc",
                            ldc,
                            "--batch_count",
                            batch_count);
        }

        if(m < 0 || n < 0 || ldc < m || lda < (transA == rocblas_operation_none ? m : n)
           || ldb < (transB == rocblas_operation_none ? m : n) || batch_count < 0)
            return rocblas_status_invalid_size;

        if(!m || !n || !batch_count)
            return rocblas_status_success;

        if(!A || !B || !C)
            return rocblas_status_invalid_pointer;

        if((C == A && (lda != ldc || transA != rocblas_operation_none))
           || (C == B && (ldb != ldc || transB != rocblas_operation_none)))
            return rocblas_status_invalid_size;

        if(!alpha || !beta)
            return rocblas_status_invalid_pointer;

        static constexpr rocblas_int    offset_a = 0, offset_b = 0, offset_c = 0;
        static constexpr rocblas_stride stride_a = 0, stride_b = 0, stride_c = 0;

        return rocblas_geam_template(handle,
                                     transA,
                                     transB,
                                     m,
                                     n,
                                     alpha,
                                     A,
                                     offset_a,
                                     lda,
                                     stride_a,
                                     beta,
                                     B,
                                     offset_b,
                                     ldb,
                                     stride_b,
                                     C,
                                     offset_c,
                                     ldc,
                                     stride_c,
                                     batch_count);
    }

} // namespace

/*
 * ===========================================================================
 *    C wrapper
 * ===========================================================================
 */

extern "C" {

#ifdef IMPL
#error IMPL ALREADY DEFINED
#endif

#define IMPL(routine_name_, T_)                                                              \
    rocblas_status routine_name_(rocblas_handle    handle,                                   \
                                 rocblas_operation transA,                                   \
                                 rocblas_operation transB,                                   \
                                 rocblas_int       m,                                        \
                                 rocblas_int       n,                                        \
                                 const T_*         alpha,                                    \
                                 const T_* const   A[],                                      \
                                 rocblas_int       lda,                                      \
                                 const T_*         beta,                                     \
                                 const T_* const   B[],                                      \
                                 rocblas_int       ldb,                                      \
                                 T_* const         C[],                                      \
                                 rocblas_int       ldc,                                      \
                                 rocblas_int       batch_count)                              \
    try                                                                                      \
    {                                                                                        \
        return rocblas_geam_batched_impl<T_>(                                                \
            handle, transA, transB, m, n, alpha, A, lda, beta, B, ldb, C, ldc, batch_count); \
    }                                                                                        \
    catch(...)                                                                               \
    {                                                                                        \
        return exception_to_rocblas_status();                                                \
    }

IMPL(rocblas_sgeam_batched, float);
IMPL(rocblas_dgeam_batched, double);
IMPL(rocblas_cgeam_batched, rocblas_float_complex);
IMPL(rocblas_zgeam_batched, rocblas_double_complex);

#undef IMPL

} // extern "C"