Improve bignum support for system types

Use bignums when Emacs converts to and from system types like
off_t for file sizes whose values can exceed fixnum range.
Formerly, Emacs sometimes generted floats and sometimes ad-hoc
conses of integers.  Emacs still accepts floats and conses for
these system types, in case some stray Lisp code is generating
them, though this usage is obsolescent.
* doc/lispref/files.texi (File Attributes):
* doc/lispref/hash.texi (Defining Hash):
* doc/lispref/nonascii.texi (Character Sets):
* doc/lispref/os.texi (User Identification):
* doc/lispref/processes.texi (System Processes):
* etc/NEWS:
Document changes.
* src/bignum.c (mpz_set_uintmax, make_biguint)
(mpz_set_uintmax_slow, bignum_to_intmax, bignum_to_uintmax):
New functions.
(mpz_set_intmax_slow): Implement via mpz_limbs_write,
to avoid the need for an extra pass through a negative number.
* src/charset.c (Fencode_char):
* src/composite.h (LGLYPH_SET_CODE):
* src/dired.c (file_attributes):
* src/dosfns.c, src/w32.c (list_system_processes)
(system_process_attributes):
* src/editfns.c (init_editfns, Fuser_uid, Fuser_real_uid)
(Fgroup_gid, Fgroup_real_gid, Femacs_pid):
* src/emacs-module.c (check_vec_index):
* src/fns.c (Fsafe_length):
* src/process.c (record_deleted_pid, Fprocess_id):
* src/sysdep.c (list_system_processes, system_process_attributes):
* src/xselect.c (x_own_selection, selection_data_to_lisp_data):
* src/xterm.c (set_wm_state):
* src/inotify.c (inotifyevent_to_event, add_watch)
(inotify_callback):
If an integer is out of fixnum range, use a bignum
instead of converting it to a float or a cons of integers.
* src/coding.c (Fdefine_coding_system_internal):
* src/frame.c (frame_windows_min_size)
(x_set_frame_parameters):
* src/fringe.c (Fdefine_fringe_bitmap):
* src/nsterm.m (mouseDown:):
* src/syntax.c (find_defun_start):
* src/w32fns.c (x_set_undecorated, w32_createwindow)
(w32_wnd_proc, Fx_create_frame, Fx_show_tip)
(w32_console_toggle_lock_key):
* src/w32inevt.c (key_event):
* src/w32proc.c (Fw32_get_locale_info):
Do not mishandle floats by treating their addresses as their
values.
* src/data.c (store_symval_forwarding):
* src/gnutls.c (Fgnutls_error_fatalp, Fgnutls_error_string):
* src/keyboard.c (command_loop_1, make_lispy_event):
* src/lread.c (read_filtered_event, read1)
(substitute_object_recurse):
* src/window.c (Fcoordinates_in_window_p, Fwindow_at)
(window_resize_apply, Fset_window_vscroll):
* src/xdisp.c (handle_single_display_spec, try_scrolling)
(redisplay_window, calc_pixel_width_or_height)
(calc_line_height_property, on_hot_spot_p):
* src/xfaces.c (check_lface_attrs):
* src/xselect.c (x_get_local_selection, cons_to_x_long)
(lisp_data_to_selection_data, clean_local_selection_data)
(x_check_property_data, x_fill_property_data):
(x_send_client_event):
Do not reject bignums.
* src/data.c (INTBIG_TO_LISP, intbig_to_lisp)
(uintbig_to_lisp):
Remove.  All uses removed.
* src/data.c (cons_to_unsigned, cons_to_signed):
* src/dbusbind.c (xd_signature, xd_extract_signed)
(xd_extract_unsigned):
* src/dispnew.c (sit_for):
* src/dosfns.c, src/w32.c (system_process_attributes):
* src/editfns.c (Fuser_full_name):
* src/fileio.c (file_offset):
* src/fileio.c (write_region):
* src/font.c (font_unparse_xlfd, font_open_for_lface, Fopen_font):
* src/frame.c (x_set_screen_gamma):
* src/frame.h (NUMVAL, FRAME_PIXEL_X_FROM_CANON_X)
(FRAME_PIXEL_Y_FROM_CANON_Y):
* src/image.c (parse_image_spec, x_edge_detection)
(compute_image_size):
* src/json.c (json_to_lisp):
* src/lcms.c (PARSE_LAB_LIST_FIELD, Flcms_cie_de2000)
(PARSE_XYZ_LIST_FIELD, PARSE_JCH_LIST_FIELD)
(PARSE_JAB_LIST_FIELD, PARSE_VIEW_CONDITION_FLOAT)
(Flcms_temp_to_white_point):
* src/nsimage.m (ns_load_image, setSizeFromSpec):
* src/process.c (Fsignal_process, handle_child_signal):
* src/sysdep.c (system_process_attributes):
* src/xdisp.c (calc_line_height_property):
Handle bignums.
* src/data.c (Fnumber_to_string): Use proper predicate name in
signal if the argument is not a number.
* src/lisp.h (make_uint): New function.
(INT_TO_INTEGER): New macro.
(FIXED_OR_FLOATP, CHECK_FIXNUM_OR_FLOAT)
(CHECK_FIXNUM_OR_FLOAT_COERCE_MARKER, INTEGER_TO_CONS)
(make_fixnum_or_float): Remove; no longer used.
* src/nsfns.m, src/w32fns.c, src/xfns.c (Fx_create_frame):
Reject floating-point min-width or min-height.
* src/process.c (handle_child_signal): Do not worry
about floating-point pids, as they are no longer generated.

1 files changed, 12 insertions, 35 deletions

diff --git a/src/lisp.h b/src/lisp.h
index 555496bc271..c5b51ba3b35 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -586,6 +586,7 @@ INLINE void set_sub_char_table_contents (Lisp_Object, ptrdiff_t,
 /* Defined in bignum.c.  */
 extern double bignum_to_double (Lisp_Object);
 extern Lisp_Object make_bigint (intmax_t);
+extern Lisp_Object make_biguint (uintmax_t);
 
 /* Defined in chartab.c.  */
 extern Lisp_Object char_table_ref (Lisp_Object, int);
@@ -2468,6 +2469,15 @@ make_int (intmax_t n)
 {
   return FIXNUM_OVERFLOW_P (n) ? make_bigint (n) : make_fixnum (n);
 }
+INLINE Lisp_Object
+make_uint (uintmax_t n)
+{
+  return FIXNUM_OVERFLOW_P (n) ? make_biguint (n) : make_fixnum (n);
+}
+
+/* Return a Lisp integer equal to the value of the C integer EXPR.  */
+#define INT_TO_INTEGER(expr) \
+  (EXPR_SIGNED (expr) ? make_int (expr) : make_uint (expr))
 
 
 /* Forwarding pointer to an int variable.
@@ -2672,11 +2682,6 @@ enum char_bits
 /* Data type checking.  */
 
 INLINE bool
-FIXED_OR_FLOATP (Lisp_Object x)
-{
-  return FIXNUMP (x) || FLOATP (x);
-}
-INLINE bool
 FIXNATP (Lisp_Object x)
 {
   return FIXNUMP (x) && 0 <= XFIXNUM (x);
@@ -2831,12 +2836,6 @@ XFLOATINT (Lisp_Object n)
 }
 
 INLINE void
-CHECK_FIXNUM_OR_FLOAT (Lisp_Object x)
-{
-  CHECK_TYPE (FIXED_OR_FLOATP (x), Qnumberp, x);
-}
-
-INLINE void
 CHECK_NUMBER (Lisp_Object x)
 {
   CHECK_TYPE (NUMBERP (x), Qnumberp, x);
@@ -2848,14 +2847,6 @@ CHECK_INTEGER (Lisp_Object x)
   CHECK_TYPE (INTEGERP (x), Qnumberp, x);
 }
 
-#define CHECK_FIXNUM_OR_FLOAT_COERCE_MARKER(x)				\
-  do {									\
-    if (MARKERP (x))							\
-      XSETFASTINT (x, marker_position (x));				\
-    else								\
-      CHECK_TYPE (FIXED_OR_FLOATP (x), Qnumber_or_marker_p, x);		\
-  } while (false)
-
 #define CHECK_NUMBER_COERCE_MARKER(x)					\
   do {									\
     if (MARKERP (x))							\
@@ -3288,6 +3279,8 @@ set_sub_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
 }
 
 /* Defined in bignum.c.  */
+extern intmax_t bignum_to_intmax (Lisp_Object);
+extern uintmax_t bignum_to_uintmax (Lisp_Object);
 extern Lisp_Object bignum_to_string (Lisp_Object, int);
 extern Lisp_Object make_bignum_str (char const *, int);
 extern Lisp_Object double_to_bignum (double);
@@ -3309,16 +3302,6 @@ enum Arith_Comparison {
 extern Lisp_Object arithcompare (Lisp_Object num1, Lisp_Object num2,
                                  enum Arith_Comparison comparison);
 
-/* Convert the integer I to an Emacs representation, either the integer
-   itself, or a cons of two or three integers, or if all else fails a float.
-   I should not have side effects.  */
-#define INTEGER_TO_CONS(i)					    \
-  (! FIXNUM_OVERFLOW_P (i)					    \
-   ? make_fixnum (i)						    \
-   : EXPR_SIGNED (i) ? intbig_to_lisp (i) : uintbig_to_lisp (i))
-extern Lisp_Object intbig_to_lisp (intmax_t);
-extern Lisp_Object uintbig_to_lisp (uintmax_t);
-
 /* Convert the Emacs representation CONS back to an integer of type
    TYPE, storing the result the variable VAR.  Signal an error if CONS
    is not a valid representation or is out of range for TYPE.  */
@@ -4473,12 +4456,6 @@ extern void init_system_name (void);
    because 'abs' is reserved by the C standard.  */
 #define eabs(x)         ((x) < 0 ? -(x) : (x))
 
-/* Return a fixnum or float, depending on whether the integer VAL fits
-   in a Lisp fixnum.  */
-
-#define make_fixnum_or_float(val) \
-   (FIXNUM_OVERFLOW_P (val) ? make_float (val) : make_fixnum (val))
-
 /* SAFE_ALLOCA normally allocates memory on the stack, but if size is
    larger than MAX_ALLOCA, use xmalloc to avoid overflowing the stack.  */