/**
 *
 * @file testing_csymm.c
 *
 *  PLASMA testing routines
 *  PLASMA is a software package provided by Univ. of Tennessee,
 *  Univ. of California Berkeley and Univ. of Colorado Denver
 *
 * @version 2.5.0
 * @author Mathieu Faverge
 * @date 2010-11-15
 * @generated c Thu Nov  8 11:44:44 2012
 *
 **/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>

#include <plasma.h>
#include <cblas.h>
#include <lapacke.h>
#include <core_blas.h>
#include "testing_cmain.h"

static int check_solution(PLASMA_enum transA, PLASMA_enum transB, int M, int N,
                          PLASMA_Complex32_t alpha, PLASMA_Complex32_t *A, int LDA,
                          PLASMA_Complex32_t *B, int LDB,
                          PLASMA_Complex32_t beta, PLASMA_Complex32_t *Cref, PLASMA_Complex32_t *Cplasma, int LDC);

int testing_csymm(int argc, char **argv)
{
    /* Check for number of arguments*/
    if ( argc != 7 ){
        USAGE("SYMM", "alpha beta M N K LDA LDB LDC",
              "   - alpha : alpha coefficient \n"
              "   - beta : beta coefficient \n"
              "   - M : number of rows of matrices A and C \n"
              "   - N : number of columns of matrices B and C \n"
              "   - LDA : leading dimension of matrix A \n"
              "   - LDB : leading dimension of matrix B \n"
              "   - LDC : leading dimension of matrix C\n");
        return -1;
    }

    PLASMA_Complex32_t alpha = (PLASMA_Complex32_t) atol(argv[0]);
    PLASMA_Complex32_t beta  = (PLASMA_Complex32_t) atol(argv[1]);
    int M     = atoi(argv[2]);
    int N     = atoi(argv[3]);
    int LDA   = atoi(argv[4]);
    int LDB   = atoi(argv[5]);
    int LDC   = atoi(argv[6]);
    int MNmax = max(M, N);

    float eps;
    int info_solution;
    int i, j, s, u;
    int LDAxM = LDA*MNmax;
    int LDBxN = LDB*N;
    int LDCxN = LDC*N;

    PLASMA_Complex32_t *A      = (PLASMA_Complex32_t *)malloc(LDAxM*sizeof(PLASMA_Complex32_t));
    PLASMA_Complex32_t *B      = (PLASMA_Complex32_t *)malloc(LDBxN*sizeof(PLASMA_Complex32_t));
    PLASMA_Complex32_t *C      = (PLASMA_Complex32_t *)malloc(LDCxN*sizeof(PLASMA_Complex32_t));
    PLASMA_Complex32_t *Cinit  = (PLASMA_Complex32_t *)malloc(LDCxN*sizeof(PLASMA_Complex32_t));
    PLASMA_Complex32_t *Cfinal = (PLASMA_Complex32_t *)malloc(LDCxN*sizeof(PLASMA_Complex32_t));

    /* Check if unable to allocate memory */
    if ((!A)||(!B)||(!Cinit)||(!Cfinal)){
        printf("Out of Memory \n ");
        return -2;
    }

    eps = LAPACKE_slamch_work('e');

    printf("\n");
    printf("------ TESTS FOR PLASMA CSYMM ROUTINE -------  \n");
    printf("            Size of the Matrix %d by %d\n", M, N);
    printf("\n");
    printf(" The matrix A is randomly generated for each test.\n");
    printf("============\n");
    printf(" The relative machine precision (eps) is to be %e \n",eps);
    printf(" Computational tests pass if scaled residuals are less than 10.\n");

    /*----------------------------------------------------------
    *  TESTING CSYMM
    */

    /* Initialize A */
    PLASMA_cplgsy( (float)0., MNmax, A, LDA, 51 );

    /* Initialize B */
    LAPACKE_clarnv_work(IONE, ISEED, LDBxN, B);

    /* Initialize C */
    LAPACKE_clarnv_work(IONE, ISEED, LDCxN, C);

    for (s=0; s<2; s++) {
        for (u=0; u<2; u++) {

            /* Initialize  Cinit / Cfinal */
            for ( i = 0; i < M; i++)
                for (  j = 0; j < N; j++)
                    Cinit[LDC*j+i] = C[LDC*j+i];
            for ( i = 0; i < M; i++)
                for (  j = 0; j < N; j++)
                    Cfinal[LDC*j+i] = C[LDC*j+i];

            /* PLASMA CSYMM */
            PLASMA_csymm(side[s], uplo[u], M, N, alpha, A, LDA, B, LDB, beta, Cfinal, LDC);

            /* Check the solution */
            info_solution = check_solution(side[s], uplo[u], M, N, alpha, A, LDA, B, LDB, beta, Cinit, Cfinal, LDC);

            if (info_solution == 0) {
                printf("***************************************************\n");
                printf(" ---- TESTING CSYMM (%5s, %5s) ....... PASSED !\n", sidestr[s], uplostr[u]);
                printf("***************************************************\n");
            }
            else {
                printf("************************************************\n");
                printf(" - TESTING CSYMM (%s, %s) ... FAILED !\n", sidestr[s], uplostr[u]);
                printf("************************************************\n");
            }
        }
    }

    free(A); free(B); free(C);
    free(Cinit); free(Cfinal);

    return 0;
}

/*--------------------------------------------------------------
 * Check the solution
 */

static int check_solution(PLASMA_enum side, PLASMA_enum uplo, int M, int N,
                   PLASMA_Complex32_t alpha, PLASMA_Complex32_t *A, int LDA,
                   PLASMA_Complex32_t *B, int LDB,
                   PLASMA_Complex32_t beta, PLASMA_Complex32_t *Cref, PLASMA_Complex32_t *Cplasma, int LDC)
{
    int info_solution, NrowA;
    float Anorm, Bnorm, Cinitnorm, Cplasmanorm, Clapacknorm, Rnorm;
    float eps;
    PLASMA_Complex32_t beta_const;
    float result;
    float *work = (float *)malloc(max(M, N)* sizeof(float));

    beta_const  = (PLASMA_Complex32_t)-1.0;

    NrowA = (side == PlasmaLeft) ? M : N;
    Anorm       = LAPACKE_clange_work(LAPACK_COL_MAJOR, lapack_const(PlasmaInfNorm), NrowA, NrowA, A,       LDA, work);
    Bnorm       = LAPACKE_clange_work(LAPACK_COL_MAJOR, lapack_const(PlasmaInfNorm), M,     N,     B,       LDB, work);
    Cinitnorm   = LAPACKE_clange_work(LAPACK_COL_MAJOR, lapack_const(PlasmaInfNorm), M,     N,     Cref,    LDC, work);
    Cplasmanorm = LAPACKE_clange_work(LAPACK_COL_MAJOR, lapack_const(PlasmaInfNorm), M,     N,     Cplasma, LDC, work);

    cblas_csymm(CblasColMajor, (CBLAS_SIDE)side, (CBLAS_UPLO)uplo, M, N, CBLAS_SADDR(alpha), A, LDA, B, LDB, CBLAS_SADDR(beta), Cref, LDC);

    Clapacknorm = LAPACKE_clange_work(LAPACK_COL_MAJOR, lapack_const(PlasmaInfNorm), M, N, Cref, LDC, work);

    cblas_caxpy(LDC * N, CBLAS_SADDR(beta_const), Cplasma, 1, Cref, 1);

    Rnorm = LAPACKE_clange_work(LAPACK_COL_MAJOR, lapack_const(PlasmaInfNorm), M, N, Cref, LDC, work);

    eps = LAPACKE_slamch_work('e');

    printf("Rnorm %e, Anorm %e, Bnorm %e, Cinitnorm %e, Cplasmanorm %e, Clapacknorm %e\n",Rnorm,Anorm,Bnorm,Cinitnorm,Cplasmanorm,Clapacknorm);

    result = Rnorm / ((Anorm + Bnorm + Cinitnorm) * N * eps);

    printf("============\n");
    printf("Checking the norm of the difference against reference CSYMM \n");
    printf("-- ||Cplasma - Clapack||_oo/((||A||_oo+||B||_oo+||C||_oo).N.eps) = %e \n", result );

    if ( isinf(Clapacknorm) || isinf(Cplasmanorm) || isnan(result) || isinf(result) || (result > 10.0) ) {
        printf("-- The solution is suspicious ! \n");
        info_solution = 1;
    }
    else {
        printf("-- The solution is CORRECT ! \n");
        info_solution= 0 ;
    }
    free(work);
    return info_solution;
}
