/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
 *
 *  (C) 2003 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */
#include "mpi.h"
#include <stdio.h>
#include <stdlib.h>
#include "mpitest.h"

/*
static char MTEST_Descrip[] = "Test of type_match_size";
*/

/*
 * type match size is part of the extended Fortran support, and may not
 * be present in
 */

int main(int argc, char *argv[])
{
    int errs = 0, err;
    int dsize;
    MPI_Datatype newtype;

    MTest_Init(&argc, &argv);

    /* Check the most likely cases.  Note that it is an error to
     * free the type returned by MPI_Type_match_size.  Also note
     * that it is an error to request a size not supported by the compiler,
     * so Type_match_size should generate an error in that case */
    MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);

    err = MPI_Type_match_size(MPI_TYPECLASS_REAL, sizeof(float), &newtype);
    if (err) {
        errs++;
        MTestPrintErrorMsg("Float: ", err);
    } else {
        err = MPI_Type_size(newtype, &dsize);
        if (err) {
            errs++;
            MTestPrintErrorMsg("Float type: ", err);
        } else {
            if (dsize != sizeof(float)) {
                errs++;
                printf("Unexpected size for float (%d != %d)\n", dsize, (int) sizeof(float));
            }
        }
    }

    err = MPI_Type_match_size(MPI_TYPECLASS_REAL, sizeof(double), &newtype);
    if (err) {
        errs++;
        MTestPrintErrorMsg("Double: ", err);
    } else {
        MPI_Type_size(newtype, &dsize);
        if (dsize != sizeof(double)) {
            errs++;
            printf("Unexpected size for double\n");
        }
    }
#ifdef HAVE_LONG_DOUBLE
    err = MPI_Type_match_size(MPI_TYPECLASS_REAL, sizeof(long double), &newtype);
    if (err) {
        errs++;
        MTestPrintErrorMsg("Long double: ", err);
    } else {
        MPI_Type_size(newtype, &dsize);
        if (dsize != sizeof(long double)) {
            errs++;
            printf("Unexpected size for long double\n");
        }
    }
#endif

    err = MPI_Type_match_size(MPI_TYPECLASS_INTEGER, sizeof(short), &newtype);
    if (err) {
        errs++;
        MTestPrintErrorMsg("Short: ", err);
    } else {
        MPI_Type_size(newtype, &dsize);
        if (dsize != sizeof(short)) {
            errs++;
            printf("Unexpected size for short\n");
        }
    }

    err = MPI_Type_match_size(MPI_TYPECLASS_INTEGER, sizeof(int), &newtype);
    if (err) {
        errs++;
        MTestPrintErrorMsg("Int: ", err);
    } else {
        MPI_Type_size(newtype, &dsize);
        if (dsize != sizeof(int)) {
            errs++;
            printf("Unexpected size for int\n");
        }
    }

    err = MPI_Type_match_size(MPI_TYPECLASS_INTEGER, sizeof(long), &newtype);
    if (err) {
        errs++;
        MTestPrintErrorMsg("Long: ", err);
    } else {
        MPI_Type_size(newtype, &dsize);
        if (dsize != sizeof(long)) {
            errs++;
            printf("Unexpected size for long\n");
        }
    }
#ifdef HAVE_LONG_LONG
    err = MPI_Type_match_size(MPI_TYPECLASS_INTEGER, sizeof(long long), &newtype);
    if (err) {
        errs++;
        MTestPrintErrorMsg("Long long: ", err);
    } else {
        MPI_Type_size(newtype, &dsize);
        if (dsize != sizeof(long long)) {
            errs++;
            printf("Unexpected size for long long\n");
        }
    }
#endif

    /* COMPLEX is a FORTRAN type.  The MPICH Type_match_size attempts
     * to give a valid datatype, but if Fortran is not available,
     * MPI_COMPLEX and MPI_DOUBLE_COMPLEX are not supported.
     * Allow this case by testing for MPI_DATATYPE_NULL */
    if (MPI_COMPLEX != MPI_DATATYPE_NULL) {
        err = MPI_Type_match_size(MPI_TYPECLASS_COMPLEX, 2 * sizeof(float), &newtype);
        if (err) {
            errs++;
            MTestPrintErrorMsg("Complex: ", err);
        } else {
            MPI_Type_size(newtype, &dsize);
            if (dsize != 2 * sizeof(float)) {
                errs++;
                printf("Unexpected size for complex\n");
            }
        }
    }

    if (MPI_COMPLEX != MPI_DATATYPE_NULL && MPI_DOUBLE_COMPLEX != MPI_DATATYPE_NULL) {
        err = MPI_Type_match_size(MPI_TYPECLASS_COMPLEX, 2 * sizeof(double), &newtype);
        if (err) {
            errs++;
            MTestPrintErrorMsg("Double complex: ", err);
        } else {
            MPI_Type_size(newtype, &dsize);
            if (dsize != 2 * sizeof(double)) {
                errs++;
                printf("Unexpected size for double complex\n");
            }
        }
    }

    MTest_Finalize(errs);
    return MTestReturnValue(errs);
}
