/usr/include/elk/type.h is in libelk0-dev 3.99.8-4.1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | /* 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");\
}
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