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/* Primitive operations on Lisp data types for XEmacs Lisp interpreter.
Copyright (C) 1985, 1986, 1988, 1992, 1993, 1994
Free Software Foundation, Inc.
This file is part of XEmacs.
XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING. If not, write to the Free
Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Synched up with: Mule 2.0, FSF 19.28. Some of FSF's data.c is in
XEmacs' symbols.c. */
/* This file has been Mule-ized. */
#include <config.h>
#include "lisp.h"
#include "bytecode.h"
#include "syssignal.h"
#ifdef LISP_FLOAT_TYPE
/* Need to define a differentiating symbol -- see sysfloat.h */
# define THIS_FILENAME data_c
# include "sysfloat.h"
#endif /* LISP_FLOAT_TYPE */
Lisp_Object Qnil, Qt, Qquote, Qlambda, Qfunction, Qunbound;
Lisp_Object Qerror_conditions, Qerror_message, Qtop_level;
Lisp_Object Qsignal, Qerror, Qquit, Qwrong_type_argument, Qargs_out_of_range;
Lisp_Object Qvoid_variable, Qcyclic_variable_indirection;
Lisp_Object Qvoid_function, Qcyclic_function_indirection;
Lisp_Object Qsetting_constant, Qinvalid_read_syntax;
Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch;
Lisp_Object Qend_of_file;
Lisp_Object Qarith_error, Qrange_error, Qdomain_error;
Lisp_Object Qsingularity_error, Qoverflow_error, Qunderflow_error;
Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only;
Lisp_Object Qintegerp, Qnatnump, Qsymbolp, Qkeywordp, Qlistp, Qconsp, Qsubrp;
Lisp_Object Qcharacterp, Qstringp, Qarrayp, Qsequencep, Qbufferp, Qbytecodep;
Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp;
Lisp_Object Qboundp, Qfboundp;
/* Qstring, Qinteger, Qsymbol, Qvector defined in general.c */
Lisp_Object Qcons, Qkeyword;
Lisp_Object Qcdr;
Lisp_Object Qignore;
#ifdef LISP_FLOAT_TYPE
Lisp_Object Qfloatp;
#endif
Lisp_Object Qnumberp, Qnumber_or_marker_p;
Lisp_Object
wrong_type_argument (Lisp_Object predicate, Lisp_Object value)
{
/* This function can GC */
REGISTER Lisp_Object tem;
do
{
#ifdef MOCKLISP_SUPPORT
if (!EQ (Vmocklisp_arguments, Qt))
{
if (STRINGP (value) &&
(EQ (predicate, Qintegerp) ||
EQ (predicate, Qinteger_or_marker_p)))
return Fstring_to_number (value);
if (INTP (value) && EQ (predicate, Qstringp))
return Fnumber_to_string (value);
}
#endif
value = Fsignal (Qwrong_type_argument, list2 (predicate, value));
tem = call1 (predicate, value);
}
while (NILP (tem));
return value;
}
DEFUN ("wrong-type-argument", Fwrong_type_argument, Swrong_type_argument,
2, 2, 0,
"Signal an error until the correct type value is given by the user.\n\
This function loops, signalling a continuable `wrong-type-argument' error\n\
with PREDICATE and VALUE as the data associated with the error and then\n\
calling PREDICATE on the returned value, until the value gotten satisfies\n\
PREDICATE. At that point, the gotten value is returned.")
(predicate, value)
Lisp_Object predicate, value;
{
return wrong_type_argument (predicate, value);
}
DOESNT_RETURN
pure_write_error (void)
{
error ("Attempt to modify read-only object");
}
DOESNT_RETURN
args_out_of_range (Lisp_Object a1, Lisp_Object a2)
{
signal_error (Qargs_out_of_range, list2 (a1, a2));
}
DOESNT_RETURN
args_out_of_range_3 (Lisp_Object a1, Lisp_Object a2, Lisp_Object a3)
{
signal_error (Qargs_out_of_range, list3 (a1, a2, a3));
}
void
check_int_range (int val, int min, int max)
{
if (val < min || val > max)
args_out_of_range_3 (make_number (val), make_number (min),
make_number (max));
}
#ifndef make_number
Lisp_Object
make_number (LISP_WORD_TYPE num)
{
Lisp_Object val;
/* Don't use XSETINT here -- it's defined in terms of make_number (). */
XSETOBJ (val, Lisp_Int, num);
return val;
}
#endif /* ! defined (make_number) */
/* On some machines, XINT needs a temporary location.
Here it is, in case it is needed. */
LISP_WORD_TYPE sign_extend_temp;
/* On a few machines, XINT can only be done by calling this. */
/* XEmacs: only used by m/convex.h */
int sign_extend_lisp_int (LISP_WORD_TYPE num);
int
sign_extend_lisp_int (LISP_WORD_TYPE num)
{
if (num & (1L << (VALBITS - 1)))
return num | ((-1L) << VALBITS);
else
return num & ((1L << VALBITS) - 1);
}
/* Data type predicates */
DEFUN ("eq", Feq, Seq, 2, 2, 0,
"T if the two args are the same Lisp object.")
(obj1, obj2)
Lisp_Object obj1, obj2;
{
if (EQ (obj1, obj2))
return Qt;
return Qnil;
}
DEFUN ("null", Fnull, Snull, 1, 1, 0, "T if OBJECT is nil.")
(object)
Lisp_Object object;
{
if (NILP (object))
return Qt;
return Qnil;
}
DEFUN ("consp", Fconsp, Sconsp, 1, 1, 0, "T if OBJECT is a cons cell.")
(object)
Lisp_Object object;
{
if (CONSP (object))
return Qt;
return Qnil;
}
DEFUN ("atom", Fatom, Satom, 1, 1, 0, "T if OBJECT is not a cons cell. This includes nil.")
(object)
Lisp_Object object;
{
if (CONSP (object))
return Qnil;
return Qt;
}
DEFUN ("listp", Flistp, Slistp, 1, 1, 0, "T if OBJECT is a list. This includes nil.")
(object)
Lisp_Object object;
{
if (CONSP (object) || NILP (object))
return Qt;
return Qnil;
}
DEFUN ("nlistp", Fnlistp, Snlistp, 1, 1, 0, "T if OBJECT is not a list. Lists include nil.")
(object)
Lisp_Object object;
{
if (CONSP (object) || NILP (object))
return Qnil;
return Qt;
}
DEFUN ("symbolp", Fsymbolp, Ssymbolp, 1, 1, 0, "T if OBJECT is a symbol.")
(object)
Lisp_Object object;
{
if (SYMBOLP (object))
return Qt;
return Qnil;
}
DEFUN ("keywordp", Fkeywordp, Skeywordp, 1, 1, 0, "T if OBJECT is a keyword.")
(object)
Lisp_Object object;
{
if (KEYWORDP (object))
return Qt;
return Qnil;
}
DEFUN ("vectorp", Fvectorp, Svectorp, 1, 1, 0, "T if OBJECT is a vector.")
(object)
Lisp_Object object;
{
if (VECTORP (object))
return Qt;
return Qnil;
}
DEFUN ("stringp", Fstringp, Sstringp, 1, 1, 0, "T if OBJECT is a string.")
(object)
Lisp_Object object;
{
if (STRINGP (object))
return Qt;
return Qnil;
}
DEFUN ("arrayp", Farrayp, Sarrayp, 1, 1, 0,
"T if OBJECT is an array (string or vector).")
(object)
Lisp_Object object;
{
if (VECTORP (object) || STRINGP (object))
return Qt;
return Qnil;
}
DEFUN ("sequencep", Fsequencep, Ssequencep, 1, 1, 0,
"T if OBJECT is a sequence (list or array).")
(object)
Lisp_Object object;
{
if (CONSP (object) || NILP (object)
|| VECTORP (object) || STRINGP (object))
return Qt;
return Qnil;
}
DEFUN ("markerp", Fmarkerp, Smarkerp, 1, 1, 0,
"T if OBJECT is a marker (editor pointer).")
(object)
Lisp_Object object;
{
if (MARKERP (object))
return Qt;
return Qnil;
}
DEFUN ("subrp", Fsubrp, Ssubrp, 1, 1, 0, "T if OBJECT is a built-in function.")
(object)
Lisp_Object object;
{
if (SUBRP (object))
return Qt;
return Qnil;
}
DEFUN ("subr-min-args", Fsubr_min_args, Ssubr_min_args, 1, 1, 0,
"Return minimum number of args built-in function SUBR may be called with.")
(subr)
Lisp_Object subr;
{
CHECK_SUBR (subr, 0);
return make_number (XSUBR (subr)->min_args);
}
DEFUN ("subr-max-args", Fsubr_max_args, Ssubr_max_args, 1, 1, 0,
"Return maximum number of args built-in function SUBR may be called with,\n\
or nil if it takes an arbitrary number of arguments (or is a special form).")
(subr)
Lisp_Object subr;
{
int nargs;
CHECK_SUBR (subr, 0);
nargs = XSUBR (subr)->max_args;
if (nargs == MANY || nargs == UNEVALLED)
return Qnil;
else
return make_number (nargs);
}
DEFUN ("compiled-function-p", Fcompiled_function_p, Scompiled_function_p, 1, 1, 0,
"t if OBJECT is a byte-compiled function object.")
(object)
Lisp_Object object;
{
if (BYTECODEP (object))
return Qt;
return Qnil;
}
DEFUN ("characterp", Fcharacterp, Scharacterp, 1, 1, 0,
"t if OBJECT is a character.\n\
A character is an integer that can be inserted into a buffer with\n\
`insert-char'. If Mule support was compiled in, only certain integers\n\
are valid characters. Otherwise, all integers are considered valid\n\
characters and are modded with 256 to get the actual character to use.")
(object)
Lisp_Object object;
{
if (CHARP (object))
return Qt;
return Qnil;
}
DEFUN ("char-or-string-p", Fchar_or_string_p, Schar_or_string_p, 1, 1, 0,
"t if OBJECT is a character or a string.")
(object)
Lisp_Object object;
{
if (CHARP (object) || STRINGP (object))
return Qt;
return Qnil;
}
DEFUN ("integerp", Fintegerp, Sintegerp, 1, 1, 0,
"t if OBJECT is an integer.")
(object)
Lisp_Object object;
{
if (INTP (object))
return Qt;
return Qnil;
}
DEFUN ("integer-or-marker-p", Finteger_or_marker_p, Sinteger_or_marker_p,
1, 1, 0,
"t if OBJECT is an integer or a marker (editor pointer).")
(object)
Lisp_Object object;
{
if (INTP (object) || MARKERP (object))
return Qt;
return Qnil;
}
DEFUN ("natnump", Fnatnump, Snatnump, 1, 1, 0,
"t if OBJECT is a nonnegative integer.")
(object)
Lisp_Object object;
{
if (NATNUMP (object))
return Qt;
return Qnil;
}
DEFUN ("numberp", Fnumberp, Snumberp, 1, 1, 0,
"t if OBJECT is a number (floating point or integer).")
(object)
Lisp_Object object;
{
if (INT_OR_FLOATP (object))
return Qt;
return Qnil;
}
DEFUN ("number-or-marker-p", Fnumber_or_marker_p, Snumber_or_marker_p, 1, 1, 0,
"t if OBJECT is a number or a marker.")
(object)
Lisp_Object object;
{
if (INT_OR_FLOATP (object)
|| MARKERP (object))
return Qt;
return Qnil;
}
#ifdef LISP_FLOAT_TYPE
DEFUN ("floatp", Ffloatp, Sfloatp, 1, 1, 0,
"t if OBJECT is a floating point number.")
(object)
Lisp_Object object;
{
if (FLOATP (object))
return Qt;
return Qnil;
}
#endif /* LISP_FLOAT_TYPE */
DEFUN ("type-of", Ftype_of, Stype_of, 1, 1, 0,
"Return a symbol representing the type of OBJECT.")
(object)
Lisp_Object object;
{
if (CONSP (object))
return Qcons;
if (SYMBOLP (object))
return Qsymbol;
if (KEYWORDP (object))
return Qkeyword;
if (INTP (object))
return Qinteger;
if (STRINGP (object))
return Qstring;
if (VECTORP (object))
return Qvector;
assert (LRECORDP (object));
return intern (XRECORD_LHEADER (object)->implementation->name);
}
/* Extract and set components of lists */
DEFUN ("car", Fcar, Scar, 1, 1, 0,
"Return the car of CONSCELL. If arg is nil, return nil.\n\
Error if arg is not nil and not a cons cell. See also `car-safe'.")
(conscell)
Lisp_Object conscell;
{
while (1)
{
if (CONSP (conscell))
return XCAR (conscell);
else if (EQ (conscell, Qnil))
return Qnil;
else
conscell = wrong_type_argument (Qconsp, conscell);
}
}
DEFUN ("car-safe", Fcar_safe, Scar_safe, 1, 1, 0,
"Return the car of OBJECT if it is a cons cell, or else nil.")
(object)
Lisp_Object object;
{
if (CONSP (object))
return XCAR (object);
else
return Qnil;
}
DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0,
"Return the cdr of CONSCELL. If arg is nil, return nil.\n\
Error if arg is not nil and not a cons cell. See also `cdr-safe'.")
(conscell)
Lisp_Object conscell;
{
while (1)
{
if (CONSP (conscell))
return XCDR (conscell);
else if (EQ (conscell, Qnil))
return Qnil;
else
conscell = wrong_type_argument (Qconsp, conscell);
}
}
DEFUN ("cdr-safe", Fcdr_safe, Scdr_safe, 1, 1, 0,
"Return the cdr of OBJECT if it is a cons cell, or else nil.")
(object)
Lisp_Object object;
{
if (CONSP (object))
return XCDR (object);
else
return Qnil;
}
DEFUN ("setcar", Fsetcar, Ssetcar, 2, 2, 0,
"Set the car of CONSCELL to be NEWCAR. Returns NEWCAR.")
(conscell, newcar)
Lisp_Object conscell, newcar;
{
if (!CONSP (conscell))
conscell = wrong_type_argument (Qconsp, conscell);
CHECK_IMPURE (conscell);
XCAR (conscell) = newcar;
return newcar;
}
DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0,
"Set the cdr of CONSCELL to be NEWCDR. Returns NEWCDR.")
(conscell, newcdr)
Lisp_Object conscell, newcdr;
{
if (!CONSP (conscell))
conscell = wrong_type_argument (Qconsp, conscell);
CHECK_IMPURE (conscell);
XCDR (conscell) = newcdr;
return newcdr;
}
/* Find the function at the end of a chain of symbol function indirections. */
/* If OBJECT is a symbol, find the end of its function chain and
return the value found there. If OBJECT is not a symbol, just
return it. If there is a cycle in the function chain, signal a
cyclic-function-indirection error.
This is like Findirect_function, except that it doesn't signal an
error if the chain ends up unbound. */
Lisp_Object
indirect_function (Lisp_Object object, int errorp)
{
Lisp_Object tortoise = object;
Lisp_Object hare = object;
for (;;)
{
if (!SYMBOLP (hare) || EQ (hare, Qunbound))
break;
hare = XSYMBOL (hare)->function;
if (!SYMBOLP (hare) || EQ (hare, Qunbound))
break;
hare = XSYMBOL (hare)->function;
tortoise = XSYMBOL (tortoise)->function;
if (EQ (hare, tortoise))
return (Fsignal (Qcyclic_function_indirection, list1 (object)));
}
if (EQ (hare, Qunbound) && errorp)
return Fsignal (Qvoid_function, list1 (object));
return hare;
}
DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 1, 0,
"Return the function at the end of OBJECT's function chain.\n\
If OBJECT is a symbol, follow all function indirections and return\n\
the final function binding.\n\
If OBJECT is not a symbol, just return it.\n\
Signal a void-function error if the final symbol is unbound.\n\
Signal a cyclic-function-indirection error if there is a loop in the\n\
function chain of symbols.")
(object)
Lisp_Object object;
{
return indirect_function (object, 1);
}
/* Extract and set vector and string elements */
DEFUN ("aref", Faref, Saref, 2, 2, 0,
"Return the element of ARRAY at index INDEX.\n\
ARRAY may be a vector or a string, or a byte-code object. INDEX starts at 0.")
(array, index)
Lisp_Object array;
Lisp_Object index;
{
int idxval;
retry:
CHECK_INT (index, 1);
idxval = XINT (index);
if (idxval < 0)
{
lose:
args_out_of_range (array, index);
}
if (VECTORP (array))
{
if (idxval >= vector_length (XVECTOR (array))) goto lose;
return vector_data (XVECTOR (array))[idxval];
}
else if (STRINGP (array))
{
if (idxval >= string_char_length (XSTRING (array))) goto lose;
return (make_number (string_char (XSTRING (array), idxval)));
}
else if (BYTECODEP (array))
{
/* Weird, gross compatibility kludge */
return (Felt (array, index));
}
else
{
array = wrong_type_argument (Qarrayp, array);
goto retry;
}
}
DEFUN ("aset", Faset, Saset, 3, 3, 0,
"Store into the element of ARRAY at index IDX the value NEWVAL.\n\
ARRAY may be a vector or a string. IDX starts at 0.")
(array, idx, newval)
Lisp_Object array;
Lisp_Object idx, newval;
{
int idxval;
CHECK_INT (idx, 1);
if (!VECTORP (array) && !STRINGP (array))
array = wrong_type_argument (Qarrayp, array);
idxval = XINT (idx);
if (idxval < 0)
{
lose:
args_out_of_range (array, idx);
}
CHECK_IMPURE (array);
if (VECTORP (array))
{
if (idxval >= vector_length (XVECTOR (array))) goto lose;
vector_data (XVECTOR (array))[idxval] = newval;
}
else /* string */
{
CHECK_COERCE_CHAR (newval, 2);
if (idxval >= string_char_length (XSTRING (array))) goto lose;
set_string_char (XSTRING (array), idxval, XINT (newval));
bump_string_modiff (array);
}
return newval;
}
/* Function objects */
/* The bytecode->doc_and_interactive slot uses the minimal number of conses,
based on bytecode->flags; it may take any of the following forms:
doc
interactive
domain
(doc . interactive)
(doc . domain)
(interactive . domain)
(doc . (interactive . domain))
*/
/* Caller must check flags.interactivep first */
Lisp_Object
bytecode_interactive (struct Lisp_Bytecode *b)
{
assert (b->flags.interactivep);
if (b->flags.documentationp && b->flags.domainp)
return (XCAR (XCDR (b->doc_and_interactive)));
else if (b->flags.documentationp)
return (XCDR (b->doc_and_interactive));
else if (b->flags.domainp)
return (XCAR (b->doc_and_interactive));
/* if all else fails... */
return (b->doc_and_interactive);
}
/* Caller need not check flags.documentationp first */
Lisp_Object
bytecode_documentation (struct Lisp_Bytecode *b)
{
if (! b->flags.documentationp)
return Qnil;
else if (b->flags.interactivep && b->flags.domainp)
return (XCAR (b->doc_and_interactive));
else if (b->flags.interactivep)
return (XCAR (b->doc_and_interactive));
else if (b->flags.domainp)
return (XCAR (b->doc_and_interactive));
else
return (b->doc_and_interactive);
}
/* Caller need not check flags.domainp first */
Lisp_Object
bytecode_domain (struct Lisp_Bytecode *b)
{
if (! b->flags.domainp)
return Qnil;
else if (b->flags.documentationp && b->flags.interactivep)
return (XCDR (XCDR (b->doc_and_interactive)));
else if (b->flags.documentationp)
return (XCDR (b->doc_and_interactive));
else if (b->flags.interactivep)
return (XCDR (b->doc_and_interactive));
else
return (b->doc_and_interactive);
}
/* used only by Snarf-documentation; there must be doc already. */
void
set_bytecode_documentation (struct Lisp_Bytecode *b, Lisp_Object new)
{
assert (b->flags.documentationp);
assert (INTP (new) || STRINGP (new));
if (b->flags.interactivep && b->flags.domainp)
XCAR (b->doc_and_interactive) = new;
else if (b->flags.interactivep)
XCAR (b->doc_and_interactive) = new;
else if (b->flags.domainp)
XCAR (b->doc_and_interactive) = new;
else
b->doc_and_interactive = new;
}
DEFUN ("compiled-function-instructions", Fcompiled_function_instructions,
Scompiled_function_instructions, 1, 1, 0,
"Return the byte-opcode string of the compiled-function object.")
(function)
Lisp_Object function;
{
CHECK_BYTECODE (function, 0);
return (XBYTECODE (function)->bytecodes);
}
DEFUN ("compiled-function-constants", Fcompiled_function_constants,
Scompiled_function_constants, 1, 1, 0,
"Return the constants vector of the compiled-function object.")
(function)
Lisp_Object function;
{
CHECK_BYTECODE (function, 0);
return (XBYTECODE (function)->constants);
}
DEFUN ("compiled-function-stack-depth", Fcompiled_function_stack_depth,
Scompiled_function_stack_depth, 1, 1, 0,
"Return the max stack depth of the compiled-function object.")
(function)
Lisp_Object function;
{
CHECK_BYTECODE (function, 0);
return (make_number (XBYTECODE (function)->maxdepth));
}
DEFUN ("compiled-function-arglist", Fcompiled_function_arglist,
Scompiled_function_arglist, 1, 1, 0,
"Return the argument list of the compiled-function object.")
(function)
Lisp_Object function;
{
CHECK_BYTECODE (function, 0);
return (XBYTECODE (function)->arglist);
}
DEFUN ("compiled-function-interactive", Fcompiled_function_interactive,
Scompiled_function_interactive, 1, 1, 0,
"Return the interactive spec of the compiled-function object, or nil.")
(function)
Lisp_Object function;
{
CHECK_BYTECODE (function, 0);
if (!XBYTECODE (function)->flags.interactivep)
return Qnil;
return (list2 (Qinteractive, bytecode_interactive (XBYTECODE (function))));
}
DEFUN ("compiled-function-domain", Fcompiled_function_domain,
Scompiled_function_domain, 1, 1, 0,
"Return the domain of the compiled-function object, or nil.\n\
This is only meaningful if I18N3 was enabled when emacs was compiled.")
(function)
Lisp_Object function;
{
CHECK_BYTECODE (function, 0);
if (!XBYTECODE (function)->flags.domainp)
return Qnil;
return (bytecode_domain (XBYTECODE (function)));
}
/* Arithmetic functions */
enum comparison { equal, notequal, less, grtr, less_or_equal, grtr_or_equal };
static Lisp_Object
arithcompare (Lisp_Object num1, Lisp_Object num2,
enum comparison comparison)
{
int floatp = 0;
CHECK_INT_OR_FLOAT_COERCE_MARKER (num1, 0);
CHECK_INT_OR_FLOAT_COERCE_MARKER (num2, 0);
#ifdef LISP_FLOAT_TYPE
if (FLOATP (num1) || FLOATP (num2))
{
double f1, f2;
floatp = 1;
f1 = (FLOATP (num1)) ? float_data (XFLOAT (num1)) : XINT (num1);
f2 = (FLOATP (num2)) ? float_data (XFLOAT (num2)) : XINT (num2);
switch (comparison)
{
case equal:
if (f1 == f2)
return Qt;
return Qnil;
case notequal:
if (f1 != f2)
return Qt;
return Qnil;
case less:
if (f1 < f2)
return Qt;
return Qnil;
case less_or_equal:
if (f1 <= f2)
return Qt;
return Qnil;
case grtr:
if (f1 > f2)
return Qt;
return Qnil;
case grtr_or_equal:
if (f1 >= f2)
return Qt;
return Qnil;
}
}
#endif /* LISP_FLOAT_TYPE */
else
{
switch (comparison)
{
case equal:
if (XINT (num1) == XINT (num2))
return Qt;
return Qnil;
case notequal:
if (XINT (num1) != XINT (num2))
return Qt;
return Qnil;
case less:
if (XINT (num1) < XINT (num2))
return Qt;
return Qnil;
case less_or_equal:
if (XINT (num1) <= XINT (num2))
return Qt;
return Qnil;
case grtr:
if (XINT (num1) > XINT (num2))
return Qt;
return Qnil;
case grtr_or_equal:
if (XINT (num1) >= XINT (num2))
return Qt;
return Qnil;
}
}
abort ();
return Qnil; /* suppress compiler warning */
}
DEFUN ("=", Feqlsign, Seqlsign, 2, 2, 0,
"T if two args, both numbers or markers, are equal.")
(num1, num2)
Lisp_Object num1, num2;
{
return arithcompare (num1, num2, equal);
}
DEFUN ("<", Flss, Slss, 2, 2, 0,
"T if first arg is less than second arg. Both must be numbers or markers.")
(num1, num2)
Lisp_Object num1, num2;
{
return arithcompare (num1, num2, less);
}
DEFUN (">", Fgtr, Sgtr, 2, 2, 0,
"T if first arg is greater than second arg. Both must be numbers or markers.")
(num1, num2)
Lisp_Object num1, num2;
{
return arithcompare (num1, num2, grtr);
}
DEFUN ("<=", Fleq, Sleq, 2, 2, 0,
"T if first arg is less than or equal to second arg.\n\
Both must be numbers or markers.")
(num1, num2)
Lisp_Object num1, num2;
{
return arithcompare (num1, num2, less_or_equal);
}
DEFUN (">=", Fgeq, Sgeq, 2, 2, 0,
"T if first arg is greater than or equal to second arg.\n\
Both must be numbers or markers.")
(num1, num2)
Lisp_Object num1, num2;
{
return arithcompare (num1, num2, grtr_or_equal);
}
DEFUN ("/=", Fneq, Sneq, 2, 2, 0,
"T if first arg is not equal to second arg. Both must be numbers or markers.")
(num1, num2)
Lisp_Object num1, num2;
{
return arithcompare (num1, num2, notequal);
}
DEFUN ("zerop", Fzerop, Szerop, 1, 1, 0, "T if NUMBER is zero.")
(number)
Lisp_Object number;
{
CHECK_INT_OR_FLOAT (number, 0);
#ifdef LISP_FLOAT_TYPE
if (FLOATP (number))
{
if (float_data (XFLOAT (number)) == 0.0)
return Qt;
return Qnil;
}
#endif /* LISP_FLOAT_TYPE */
if (XINT (number) == 0)
return Qt;
return Qnil;
}
/* Convert between a 32-bit value and a cons of two 16-bit values.
This is used to pass 32-bit integers to and from the user.
Use time_to_lisp() and lisp_to_time() for time values.
If you're thinking of using this to store a pointer into a Lisp Object
for internal purposes (such as when calling record_unwind_protect()),
try using make_opaque_ptr()/get_opaque_ptr() instead. */
Lisp_Object
word_to_lisp (unsigned int item)
{
return Fcons (make_number (item >> 16), make_number (item & 0xffff));
}
unsigned int
lisp_to_word (Lisp_Object item)
{
if (INTP (item))
return XINT (item);
else
{
Lisp_Object top = Fcar (item);
Lisp_Object bot = Fcdr (item);
CHECK_INT (top, 0);
CHECK_INT (bot, 0);
return (XINT (top) << 16) | (XINT (bot) & 0xffff);
}
}
DEFUN ("number-to-string", Fnumber_to_string, Snumber_to_string, 1, 1, 0,
"Convert NUM to a string by printing it in decimal.\n\
Uses a minus sign if negative.\n\
NUM may be an integer or a floating point number.")
(num)
Lisp_Object num;
{
char buffer[20];
CHECK_INT_OR_FLOAT (num, 0);
#ifdef LISP_FLOAT_TYPE
if (FLOATP (num))
{
char pigbuf[350]; /* see comments in float_to_string */
float_to_string (pigbuf, float_data (XFLOAT (num)));
return build_string (pigbuf);
}
#endif /* LISP_FLOAT_TYPE */
sprintf (buffer, "%d", XINT (num));
return build_string (buffer);
}
DEFUN ("string-to-number", Fstring_to_number, Sstring_to_number, 1, 1, 0,
"Convert STRING to a number by parsing it as a decimal number.\n\
This parses both integers and floating point numbers.\n\
It ignores leading spaces and tabs.")
(string)
Lisp_Object string;
{
char *p;
CHECK_STRING (string, 0);
p = (char *) string_data (XSTRING (string));
/* Skip any whitespace at the front of the number. Some versions of
atoi do this anyway, so we might as well make Emacs lisp consistent. */
while (*p == ' ' || *p == '\t')
p++;
#ifdef LISP_FLOAT_TYPE
if (isfloat_string (p))
return make_float (atof (p));
#endif /* LISP_FLOAT_TYPE */
return make_number (atoi (p));
}
enum arithop
{ Aadd, Asub, Amult, Adiv, Alogand, Alogior, Alogxor, Amax, Amin };
#ifdef LISP_FLOAT_TYPE
static Lisp_Object float_arith_driver (double accum, int argnum,
enum arithop code,
int nargs, Lisp_Object *args);
#endif
static Lisp_Object
arith_driver (enum arithop code, int nargs, Lisp_Object *args)
{
Lisp_Object val;
REGISTER int argnum;
REGISTER LISP_WORD_TYPE accum = 0;
REGISTER LISP_WORD_TYPE next;
switch (code)
{
case Alogior:
case Alogxor:
case Aadd:
case Asub:
accum = 0; break;
case Amult:
accum = 1; break;
case Alogand:
accum = -1; break;
case Adiv:
case Amax:
case Amin:
accum = 0;
break;
default:
abort ();
}
for (argnum = 0; argnum < nargs; argnum++)
{
val = args[argnum]; /* using args[argnum] as argument to CHECK_INT_OR_FLOAT_... */
CHECK_INT_OR_FLOAT_COERCE_MARKER (val, argnum);
#ifdef LISP_FLOAT_TYPE
if (FLOATP (val)) /* time to do serious math */
return (float_arith_driver ((double) accum, argnum, code,
nargs, args));
#endif /* LISP_FLOAT_TYPE */
args[argnum] = val; /* runs into a compiler bug. */
next = XINT (args[argnum]);
switch (code)
{
case Aadd: accum += next; break;
case Asub:
if (!argnum && nargs != 1)
next = - next;
accum -= next;
break;
case Amult: accum *= next; break;
case Adiv:
if (!argnum) accum = next;
else
{
if (next == 0)
Fsignal (Qarith_error, Qnil);
accum /= next;
}
break;
case Alogand: accum &= next; break;
case Alogior: accum |= next; break;
case Alogxor: accum ^= next; break;
case Amax: if (!argnum || next > accum) accum = next; break;
case Amin: if (!argnum || next < accum) accum = next; break;
}
}
XSETINT (val, accum);
return val;
}
#ifdef LISP_FLOAT_TYPE
static Lisp_Object
float_arith_driver (double accum, int argnum, enum arithop code, int nargs,
Lisp_Object *args)
{
REGISTER Lisp_Object val;
double next;
for (; argnum < nargs; argnum++)
{
val = args[argnum]; /* using args[argnum] as argument to CHECK_INT_OR_FLOAT_... */
CHECK_INT_OR_FLOAT_COERCE_MARKER (val, argnum);
if (FLOATP (val))
{
next = float_data (XFLOAT (val));
}
else
{
args[argnum] = val; /* runs into a compiler bug. */
next = XINT (args[argnum]);
}
switch (code)
{
case Aadd:
accum += next;
break;
case Asub:
if (!argnum && nargs != 1)
next = - next;
accum -= next;
break;
case Amult:
accum *= next;
break;
case Adiv:
if (!argnum)
accum = next;
else
{
if (next == 0)
Fsignal (Qarith_error, Qnil);
accum /= next;
}
break;
case Alogand:
case Alogior:
case Alogxor:
return wrong_type_argument (Qinteger_or_marker_p, val);
case Amax:
if (!argnum || isnan (next) || next > accum)
accum = next;
break;
case Amin:
if (!argnum || isnan (next) || next < accum)
accum = next;
break;
}
}
return make_float (accum);
}
#endif /* LISP_FLOAT_TYPE */
DEFUN ("+", Fplus, Splus, 0, MANY, 0,
"Return sum of any number of arguments, which are numbers or markers.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Aadd, nargs, args);
}
DEFUN ("-", Fminus, Sminus, 0, MANY, 0,
"Negate number or subtract numbers or markers.\n\
With one arg, negates it. With more than one arg,\n\
subtracts all but the first from the first.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Asub, nargs, args);
}
DEFUN ("*", Ftimes, Stimes, 0, MANY, 0,
"Return product of any number of arguments, which are numbers or markers.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Amult, nargs, args);
}
DEFUN ("/", Fquo, Squo, 2, MANY, 0,
"Return first argument divided by all the remaining arguments.\n\
The arguments must be numbers or markers.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Adiv, nargs, args);
}
DEFUN ("%", Frem, Srem, 2, 2, 0,
"Return remainder of first arg divided by second.\n\
Both must be integers or markers.")
(num1, num2)
Lisp_Object num1, num2;
{
CHECK_INT_COERCE_MARKER (num1, 0);
CHECK_INT_COERCE_MARKER (num2, 1);
if (EQ (num2, Qzero))
Fsignal (Qarith_error, Qnil);
return (make_number (XINT (num1) % XINT (num2)));
}
DEFUN ("mod", Fmod, Smod, 2, 2, 0,
"Return X modulo Y.\n\
The result falls between zero (inclusive) and Y (exclusive).\n\
Both X and Y must be numbers or markers.\n\
If either argument is a float, a float will be returned.")
(x, y)
Lisp_Object x, y;
{
int i1, i2;
CHECK_INT_OR_FLOAT_COERCE_MARKER (x, 0);
CHECK_INT_OR_FLOAT_COERCE_MARKER (y, 1);
#ifdef LISP_FLOAT_TYPE
if (FLOATP (x) || FLOATP (y))
{
double f1, f2;
f1 = ((FLOATP (x)) ? float_data (XFLOAT (x)) : XINT (x));
f2 = ((FLOATP (y)) ? float_data (XFLOAT (y)) : XINT (y));
if (f2 == 0)
Fsignal (Qarith_error, Qnil);
/* Note, ANSI *requires* the presence of the fmod() library routine.
If your system doesn't have it, complain to your vendor, because
that is a bug. */
#ifdef USE_DREM /* #### obsolete?? */
/* drem returns a result in the range [-f2/2,f2/2] instead of
[0,f2), but the sign fixup below takes care of that. */
f1 = drem (f1, f2);
#else
f1 = fmod (f1, f2); /* fmod is ANSI. */
#endif
/* If the "remainder" comes out with the wrong sign, fix it. */
if ((f1 < 0) != (f2 < 0))
f1 += f2;
return (make_float (f1));
}
#else /* not LISP_FLOAT_TYPE */
CHECK_INT_OR_FLOAT_COERCE_MARKER (x, 0);
CHECK_INT_OR_FLOAT_COERCE_MARKER (y, 1);
#endif /* not LISP_FLOAT_TYPE */
i1 = XINT (x);
i2 = XINT (y);
if (i2 == 0)
Fsignal (Qarith_error, Qnil);
i1 %= i2;
/* If the "remainder" comes out with the wrong sign, fix it. */
if ((i1 < 0) != (i2 < 0))
i1 += i2;
return (make_number (i1));
}
DEFUN ("max", Fmax, Smax, 1, MANY, 0,
"Return largest of all the arguments (which must be numbers or markers).\n\
The value is always a number; markers are converted to numbers.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Amax, nargs, args);
}
DEFUN ("min", Fmin, Smin, 1, MANY, 0,
"Return smallest of all the arguments (which must be numbers or markers).\n\
The value is always a number; markers are converted to numbers.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Amin, nargs, args);
}
DEFUN ("logand", Flogand, Slogand, 0, MANY, 0,
"Return bitwise-and of all the arguments.\n\
Arguments may be integers, or markers converted to integers.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Alogand, nargs, args);
}
DEFUN ("logior", Flogior, Slogior, 0, MANY, 0,
"Return bitwise-or of all the arguments.\n\
Arguments may be integers, or markers converted to integers.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Alogior, nargs, args);
}
DEFUN ("logxor", Flogxor, Slogxor, 0, MANY, 0,
"Return bitwise-exclusive-or of all the arguments.\n\
Arguments may be integers, or markers converted to integers.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
return arith_driver (Alogxor, nargs, args);
}
DEFUN ("ash", Fash, Sash, 2, 2, 0,
"Return VALUE with its bits shifted left by COUNT.\n\
If COUNT is negative, shifting is actually to the right.\n\
In this case, the sign bit is duplicated.")
(value, count)
Lisp_Object value, count;
{
CHECK_INT (value, 0);
CHECK_INT (count, 1);
if (XINT (count) > 0)
return (make_number (XINT (value) << XINT (count)));
else
return (make_number (XINT (value) >> -XINT (count)));
}
DEFUN ("lsh", Flsh, Slsh, 2, 2, 0,
"Return VALUE with its bits shifted left by COUNT.\n\
If COUNT is negative, shifting is actually to the right.\n\
In this case, zeros are shifted in on the left.")
(value, count)
Lisp_Object value, count;
{
Lisp_Object val;
CHECK_INT (value, 0);
CHECK_INT (count, 1);
if (XINT (count) > 0)
XSETINT (val, XUINT (value) << XINT (count));
else
XSETINT (val, XUINT (value) >> -XINT (count));
return val;
}
DEFUN ("1+", Fadd1, Sadd1, 1, 1, 0,
"Return NUMBER plus one. NUMBER may be a number or a marker.\n\
Markers are converted to integers.")
(number)
Lisp_Object number;
{
CHECK_INT_OR_FLOAT_COERCE_MARKER (number, 0);
#ifdef LISP_FLOAT_TYPE
if (FLOATP (number))
return (make_float (1.0 + float_data (XFLOAT (number))));
#endif /* LISP_FLOAT_TYPE */
return (make_number (XINT (number) + 1));
}
DEFUN ("1-", Fsub1, Ssub1, 1, 1, 0,
"Return NUMBER minus one. NUMBER may be a number or a marker.\n\
Markers are converted to integers.")
(number)
Lisp_Object number;
{
CHECK_INT_OR_FLOAT_COERCE_MARKER (number, 0);
#ifdef LISP_FLOAT_TYPE
if (FLOATP (number))
return (make_float (-1.0 + (float_data (XFLOAT (number)))));
#endif /* LISP_FLOAT_TYPE */
return (make_number (XINT (number) - 1));
}
DEFUN ("lognot", Flognot, Slognot, 1, 1, 0,
"Return the bitwise complement of NUMBER. NUMBER must be an integer.")
(number)
Lisp_Object number;
{
CHECK_INT (number, 0);
return (make_number (~XINT (number)));
}
#ifdef ERROR_CHECK_TYPECHECK
struct Lisp_Cons *
error_check_cons (Lisp_Object a)
{
XUNMARK (a);
assert (CONSP (a));
return (struct Lisp_Cons *) XPNTR (a);
}
struct Lisp_Vector *
error_check_vector (Lisp_Object a)
{
XUNMARK (a);
assert (VECTORP (a) || MARKED_RECORD_P (a));
return (struct Lisp_Vector *) XPNTR (a);
}
struct Lisp_String *
error_check_string (Lisp_Object a)
{
XUNMARK (a);
assert (STRINGP (a));
return (struct Lisp_String *) XPNTR (a);
}
#endif /* ERROR_CHECK_TYPECHECK */
/************************************************************************/
/* initialization */
/************************************************************************/
static SIGTYPE
arith_error (int signo)
{
EMACS_REESTABLISH_SIGNAL (signo, arith_error);
EMACS_UNBLOCK_SIGNAL (signo);
signal_error (Qarith_error, Qnil);
}
void
init_data_very_early (void)
{
/* Don't do this if just dumping out.
We don't want to call `signal' in this case
so that we don't have trouble with dumping
signal-delivering routines in an inconsistent state. */
#ifndef CANNOT_DUMP
if (!initialized)
return;
#endif /* CANNOT_DUMP */
signal (SIGFPE, arith_error);
#ifdef uts
signal (SIGEMT, arith_error);
#endif /* uts */
}
void
init_errors_once_early (void)
{
defsymbol (&Qerror_conditions, "error-conditions");
defsymbol (&Qerror_message, "error-message");
/* We declare the errors here because some other deferrors depend
on some of the errors below. */
/* ERROR is used as a signaler for random errors for which nothing
else is right */
deferror (&Qerror, "error", "error", 0);
deferror (&Qquit, "quit", "Quit", 0);
deferror (&Qwrong_type_argument, "wrong-type-argument",
"Wrong type argument", 1);
deferror (&Qargs_out_of_range, "args-out-of-range", "Args out of range", 1);
deferror (&Qvoid_function, "void-function",
"Symbol's function definition is void", 1);
deferror (&Qcyclic_function_indirection, "cyclic-function-indirection",
"Symbol's chain of function indirections contains a loop", 1);
deferror (&Qvoid_variable, "void-variable",
"Symbol's value as variable is void", 1);
deferror (&Qcyclic_variable_indirection, "cyclic-variable-indirection",
"Symbol's chain of variable indirections contains a loop", 1);
deferror (&Qsetting_constant, "setting-constant",
"Attempt to set a constant symbol", 1);
deferror (&Qinvalid_read_syntax, "invalid-read-syntax",
"Invalid read syntax", 1);
deferror (&Qinvalid_function, "invalid-function", "Invalid function", 1);
deferror (&Qwrong_number_of_arguments, "wrong-number-of-arguments",
"Wrong number of arguments", 1);
deferror (&Qno_catch, "no-catch", "No catch for tag", 1);
deferror (&Qend_of_file, "end-of-file", "End of file during parsing", 1);
deferror (&Qarith_error, "arith-error", "Arithmetic error", 1);
deferror (&Qrange_error, "range-error", "Arithmetic range error", 2);
deferror (&Qdomain_error, "domain-error", "Arithmetic domain error", 2);
deferror (&Qsingularity_error, "singularity-error",
"Arithmetic singularity error", 3);
deferror (&Qoverflow_error, "overflow-error",
"Arithmetic overflow error", 3);
deferror (&Qunderflow_error, "underflow-error",
"Arithmetic underflow error", 3);
deferror (&Qbeginning_of_buffer, "beginning-of-buffer",
"Beginning of buffer", 1);
deferror (&Qend_of_buffer, "end-of-buffer", "End of buffer", 1);
deferror (&Qbuffer_read_only, "buffer-read-only", "Buffer is read-only", 1);
}
void
syms_of_data (void)
{
defsymbol (&Qcons, "cons");
defsymbol (&Qkeyword, "keyword");
/* Qstring, Qinteger, Qsymbol, Qvector defined in general.c */
defsymbol (&Qquote, "quote");
defsymbol (&Qlambda, "lambda");
defsymbol (&Qfunction, "function");
defsymbol (&Qsignal, "signal");
defsymbol (&Qtop_level, "top-level");
defsymbol (&Qignore, "ignore");
defsymbol (&Qlistp, "listp");
defsymbol (&Qconsp, "consp");
defsymbol (&Qsubrp, "subrp");
defsymbol (&Qsymbolp, "symbolp");
defsymbol (&Qkeywordp, "keywordp");
defsymbol (&Qintegerp, "integerp");
defsymbol (&Qcharacterp, "characterp");
defsymbol (&Qnatnump, "natnump");
defsymbol (&Qstringp, "stringp");
defsymbol (&Qarrayp, "arrayp");
defsymbol (&Qsequencep, "sequencep");
defsymbol (&Qbufferp, "bufferp");
defsymbol (&Qvectorp, "vectorp");
defsymbol (&Qbytecodep, "bytecodep");
defsymbol (&Qchar_or_string_p, "char-or-string-p");
defsymbol (&Qmarkerp, "markerp");
defsymbol (&Qinteger_or_marker_p, "integer-or-marker-p");
defsymbol (&Qboundp, "boundp");
defsymbol (&Qfboundp, "fboundp");
#ifdef LISP_FLOAT_TYPE
defsymbol (&Qfloatp, "floatp");
#endif /* LISP_FLOAT_TYPE */
defsymbol (&Qnumberp, "numberp");
defsymbol (&Qnumber_or_marker_p, "number-or-marker-p");
defsymbol (&Qcdr, "cdr");
defsubr (&Swrong_type_argument);
defsubr (&Seq);
defsubr (&Snull);
defsubr (&Slistp);
defsubr (&Snlistp);
defsubr (&Sconsp);
defsubr (&Satom);
defsubr (&Schar_or_string_p);
defsubr (&Scharacterp);
defsubr (&Sintegerp);
defsubr (&Sinteger_or_marker_p);
defsubr (&Snumberp);
defsubr (&Snumber_or_marker_p);
#ifdef LISP_FLOAT_TYPE
defsubr (&Sfloatp);
#endif /* LISP_FLOAT_TYPE */
defsubr (&Snatnump);
defsubr (&Ssymbolp);
defsubr (&Skeywordp);
defsubr (&Sstringp);
defsubr (&Svectorp);
defsubr (&Sarrayp);
defsubr (&Ssequencep);
defsubr (&Smarkerp);
defsubr (&Ssubrp);
defsubr (&Ssubr_min_args);
defsubr (&Ssubr_max_args);
defsubr (&Scompiled_function_p);
defsubr (&Stype_of);
defsubr (&Scar);
defsubr (&Scdr);
defsubr (&Scar_safe);
defsubr (&Scdr_safe);
defsubr (&Ssetcar);
defsubr (&Ssetcdr);
defsubr (&Sindirect_function);
defsubr (&Saref);
defsubr (&Saset);
defsubr (&Scompiled_function_instructions);
defsubr (&Scompiled_function_constants);
defsubr (&Scompiled_function_stack_depth);
defsubr (&Scompiled_function_arglist);
defsubr (&Scompiled_function_interactive);
defsubr (&Scompiled_function_domain);
defsubr (&Snumber_to_string);
defsubr (&Sstring_to_number);
defsubr (&Seqlsign);
defsubr (&Slss);
defsubr (&Sgtr);
defsubr (&Sleq);
defsubr (&Sgeq);
defsubr (&Sneq);
defsubr (&Szerop);
defsubr (&Splus);
defsubr (&Sminus);
defsubr (&Stimes);
defsubr (&Squo);
defsubr (&Srem);
defsubr (&Smod);
defsubr (&Smax);
defsubr (&Smin);
defsubr (&Slogand);
defsubr (&Slogior);
defsubr (&Slogxor);
defsubr (&Slsh);
defsubr (&Sash);
defsubr (&Sadd1);
defsubr (&Ssub1);
defsubr (&Slognot);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.