/* type.h: Miscellaneous macros for type-checking Scheme objects.
 *
 * $Id$
 *
 * Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
 * Copyright 2002, 2003 Sam Hocevar <sam@hocevar.net>, Paris
 *
 * This software was derived from Elk 1.2, which was Copyright 1987, 1988,
 * 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
 * by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
 * between TELES and Nixdorf Microprocessor Engineering, Berlin).
 *
 * Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
 * owners or individual owners of copyright in this software, grant to any
 * person or company a worldwide, royalty free, license to
 *
 *    i) copy this software,
 *   ii) prepare derivative works based on this software,
 *  iii) distribute copies of this software or derivative works,
 *   iv) perform this software, or
 *    v) display this software,
 *
 * provided that this notice is not removed and that neither Oliver Laumann
 * nor Teles nor Nixdorf are deemed to have made any representations as to
 * the suitability of this software for any purpose nor are held responsible
 * for any defects of this software.
 *
 * THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
 */

#define Check_Type(x,t) {\
    if (TYPE(x) != t) Wrong_Type (x, t);\
}

#define Check_List(x) {\
    if (TYPE(x) != T_Pair && !Nullp (x)) Wrong_Type_Combination (x, "list");\
}

#define Check_Number(x) {\
    register int t = TYPE(x);\
    if (!Numeric (t)) Wrong_Type_Combination (x, "number");\
}

/* This should be renamed; it checks whether x is an *exact* integer.
 */
#define Check_Integer(x) {\
    register int t = TYPE(x);\
    if (t != T_Fixnum && t != T_Bignum) Wrong_Type (x, T_Fixnum);\
}

#define Check_Mutable(x) {\
    if (ISCONST(x))\
        Primitive_Error ("attempt to modify constant");\
}
