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#include "lsCMatrix.h"

/**
 * Check the validity of the slots of an lsCMatrix object
 *
 * @param x Pointer to an lsCMatrix object
 *
 * @return an SEXP that is either TRUE or a character string
 * describing the way in which the object failed the validity check
 */
SEXP lsCMatrix_validate(SEXP x)
{
    SEXP val = symmetricMatrix_validate(x);
    if(isString(val))
    return(val);
    else {
    /* Almost all is now done in Csparse_validate
     * *but* the checking of the 'x' slot */
    SEXP islot = GET_SLOT(x, Matrix_iSym),
        xslot = GET_SLOT(x, Matrix_xSym);

    if (length(islot) != length(xslot))
        return mkString(_("lengths of slots 'i' and 'x' must match"));

    return ScalarLogical(1);
    }
}