/* Random utility Lisp functions.
- Copyright (C) 1985-1987, 1993-1995, 1997-2012
- Free Software Foundation, Inc.
+
+Copyright (C) 1985-1987, 1993-1995, 1997-2013 Free Software Foundation, Inc.
This file is part of GNU Emacs.
With positive integer LIMIT, return random number in interval [0,LIMIT).
With argument t, set the random number seed from the current time and pid.
-Other values of LIMIT are ignored. */)
+With a string argument, set the seed based on the string's contents.
+Other values of LIMIT are ignored.
+
+See Info node `(elisp)Random Numbers' for more details. */)
(Lisp_Object limit)
{
EMACS_INT val;
before it's time to do a QUIT. This must be a power of 2. */
enum { QUIT_COUNT_HEURISTIC = 1 << 16 };
-/* Random data-structure functions */
+/* Random data-structure functions. */
DEFUN ("length", Flength, Slength, 1, 1, 0,
doc: /* Return the length of vector, list or string SEQUENCE.
DEFUN ("compare-strings", Fcompare_strings, Scompare_strings, 6, 7, 0,
doc: /* Compare the contents of two strings, converting to multibyte if needed.
-In string STR1, skip the first START1 characters and stop at END1.
-In string STR2, skip the first START2 characters and stop at END2.
-END1 and END2 default to the full lengths of the respective strings.
-
-Case is significant in this comparison if IGNORE-CASE is nil.
-Unibyte strings are converted to multibyte for comparison.
+The arguments START1, END1, START2, and END2, if non-nil, are
+positions specifying which parts of STR1 or STR2 to compare. In
+string STR1, compare the part between START1 (inclusive) and END1
+\(exclusive). If START1 is nil, it defaults to 0, the beginning of
+the string; if END1 is nil, it defaults to the length of the string.
+Likewise, in string STR2, compare the part between START2 and END2.
+
+The strings are compared by the numeric values of their characters.
+For instance, STR1 is "less than" STR2 if its first differing
+character has a smaller numeric value. If IGNORE-CASE is non-nil,
+characters are converted to lower-case before comparing them. Unibyte
+strings are converted to multibyte for comparison.
The value is t if the strings (or specified portions) match.
If string STR1 is less, the value is a negative number N;
Fding (Qnil);
Fdiscard_input ();
- message ("Please answer yes or no.");
+ message1 ("Please answer yes or no.");
Fsleep_for (make_number (2), Qnil);
}
}
usage: (widget-apply WIDGET PROPERTY &rest ARGS) */)
(ptrdiff_t nargs, Lisp_Object *args)
{
- /* This function can GC. */
+ /* This function can GC. */
Lisp_Object newargs[3];
struct gcpro gcpro1, gcpro2;
Lisp_Object result;
val = build_unibyte_string (str);
/* Fixme: Is this coding system necessarily right, even if
it is consistent with CODESET? If not, what to do? */
- Faset (v, make_number (i),
- code_convert_string_norecord (val, Vlocale_coding_system,
- 0));
+ ASET (v, i, code_convert_string_norecord (val, Vlocale_coding_system,
+ 0));
}
UNGCPRO;
return v;
{
str = nl_langinfo (months[i]);
val = build_unibyte_string (str);
- Faset (v, make_number (i),
- code_convert_string_norecord (val, Vlocale_coding_system, 0));
+ ASET (v, i, code_convert_string_norecord (val, Vlocale_coding_system,
+ 0));
}
UNGCPRO;
return v;
but is in the locale files. This could be used by ps-print. */
#ifdef PAPER_WIDTH
else if (EQ (item, Qpaper))
- {
- return list2 (make_number (nl_langinfo (PAPER_WIDTH)),
- make_number (nl_langinfo (PAPER_HEIGHT)));
- }
+ return list2i (nl_langinfo (PAPER_WIDTH), nl_langinfo (PAPER_HEIGHT));
#endif /* PAPER_WIDTH */
#endif /* HAVE_LANGINFO_CODESET*/
return Qnil;
ptrdiff_t n_max = (0 <= nitems_max && nitems_max < C_language_max
? nitems_max : C_language_max);
eassert (VECTORP (vec));
- eassert (0 < incr_min && -1 <= nitems_max);
+ eassert (incr_min > 0 && nitems_max >= -1);
old_size = ASIZE (vec);
incr_max = n_max - old_size;
incr = max (incr_min, min (old_size >> 1, incr_max));
eassert (SYMBOLP (test.name));
eassert (INTEGERP (size) && XINT (size) >= 0);
eassert ((INTEGERP (rehash_size) && XINT (rehash_size) > 0)
- || (FLOATP (rehash_size) && 1 < XFLOAT_DATA (rehash_size)));
+ || (FLOATP (rehash_size) && XFLOAT_DATA (rehash_size) > 1));
eassert (FLOATP (rehash_threshold)
- && 0 < XFLOAT_DATA (rehash_threshold)
+ && XFLOAT_DATA (rehash_threshold) > 0
&& XFLOAT_DATA (rehash_threshold) <= 1.0);
if (XFASTINT (size) == 0)
#define SXHASH_MAX_LEN 7
-/* Hash X, returning a value that fits into a Lisp integer. */
-#define SXHASH_REDUCE(X) \
- ((((X) ^ (X) >> (BITS_PER_EMACS_INT - FIXNUM_BITS))) & INTMASK)
-
/* Return a hash for string PTR which has length LEN. The hash value
can be any EMACS_UINT value. */
/* Return a hash for the floating point value VAL. */
-static EMACS_INT
+static EMACS_UINT
sxhash_float (double val)
{
EMACS_UINT hash = 0;
/* Look for `:rehash-size SIZE'. */
i = get_key_arg (QCrehash_size, nargs, args, used);
rehash_size = i ? args[i] : make_float (DEFAULT_REHASH_SIZE);
- if (! ((INTEGERP (rehash_size) && 0 < XINT (rehash_size))
- || (FLOATP (rehash_size) && 1 < XFLOAT_DATA (rehash_size))))
+ if (! ((INTEGERP (rehash_size) && XINT (rehash_size) > 0)
+ || (FLOATP (rehash_size) && XFLOAT_DATA (rehash_size) > 1)))
signal_error ("Invalid hash table rehash size", rehash_size);
/* Look for `:rehash-threshold THRESHOLD'. */
i = get_key_arg (QCrehash_threshold, nargs, args, used);
rehash_threshold = i ? args[i] : make_float (DEFAULT_REHASH_THRESHOLD);
if (! (FLOATP (rehash_threshold)
- && 0 < XFLOAT_DATA (rehash_threshold)
+ && XFLOAT_DATA (rehash_threshold) > 0
&& XFLOAT_DATA (rehash_threshold) <= 1))
signal_error ("Invalid hash table rehash threshold", rehash_threshold);
HCoop / bpt / emacs.git / blobdiff