Mercurial > hg > xemacs-beta
view src/number-gmp.c @ 5284:d27c1ee1943b
Make the order of preloaded-file-list more sane.
lisp/ChangeLog addition:
2010-10-12 Aidan Kehoe <kehoea@parhasard.net>
* abbrev.el (fundamental-mode-abbrev-table, global-abbrev-table):
Create both these abbrev tables using the usual
#'define-abbrev-table calls, rather than attempting to
special-case them.
* cl-extra.el: Force cl-macs to be loaded here, if cl-extra.el is
being loaded interpreted. Previously other, later files would
redundantly call (load "cl-macs") when interpreted, it's more
reasonable to do it here, once.
* cmdloop.el (read-quoted-char-radix): Use defcustom here, we
don't have any dump-order dependencies that would prevent that.
* custom.el (eval-when-compile): Don't load cl-macs when
interpreted or when byte-compiling, rely on cl-extra.el in the
former case and the appropriate entry in bytecomp-load-hook in the
latter. Get rid of custom-declare-variable-list, we have no
dump-time dependencies that would require it.
* faces.el (eval-when-compile): Don't load cl-macs when
interpreted or when byte-compiling.
* packages.el: Remove some inaccurate comments.
* post-gc.el (cleanup-simple-finalizers): Use #'delete-if-not
here, now the order of preloaded-file-list has been changed to
make it available.
* subr.el (custom-declare-variable-list): Remove. No need for it.
Also remove a stub define-abbrev-table from this file, given the
current order of preloaded-file-list there's no need for it.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Tue, 12 Oct 2010 21:11:46 +0100 |
parents | ba07c880114a |
children | 2aa9cd456ae7 |
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/* Numeric types for XEmacs using the GNU MP library. Copyright (C) 2004 Jerry James. 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, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ /* Synched up with: Not in FSF. */ #include <config.h> #include <limits.h> #include <math.h> #include "lisp.h" #include "sysproc.h" /* For qxe_getpid */ static mp_exp_t float_print_min, float_print_max; gmp_randstate_t random_state; CIbyte * bigfloat_to_string(mpf_t f, int base) { mp_exp_t expt; CIbyte *str = mpf_get_str (NULL, &expt, base, 0, f); const int sign = mpf_sgn (f); const int neg = (sign < 0) ? 1 : 0; int len = strlen (str) + 1; /* Count the null terminator */ if (sign == 0) { XREALLOC_ARRAY (str, CIbyte, 4); strncpy (str, "0.0", 4); } else if (float_print_min <= expt && expt <= float_print_max) { if (expt < 0) { /* We need room for a radix point and leading zeroes */ const int space = -expt + 2; XREALLOC_ARRAY (str, CIbyte, len + space); memmove (&str[space + neg], &str[neg], len - neg); memset (&str[neg], '0', space); str[neg + 1] = '.'; } else if (len <= expt + neg + 1) { /* We need room for a radix point and trailing zeroes */ XREALLOC_ARRAY (str, CIbyte, expt + neg + 3); memset (&str[len - 1], '0', expt + neg + 3 - len); str[expt + neg] = '.'; str[expt + neg + 2] = '\0'; } else { /* We just need room for a radix point */ XREALLOC_ARRAY (str, CIbyte, len + 1); memmove (&str[expt + neg + 1], &str[expt + neg], len - (expt + neg)); str[expt + neg] = '.'; } } else { /* Computerized scientific notation: We need room for a possible radix point, format identifier, and exponent */ /* GMP's idea of the exponent is 1 greater than scientific notation's */ expt--; { const int point = (len == neg + 2) ? 0 : 1; const int exponent = (expt < 0) ? (int)(log ((double) (-expt)) / log ((double) base)) + 3 : (int)(log ((double) expt) / log ((double) base)) + 2; const int space = point + exponent; XREALLOC_ARRAY (str, CIbyte, len + space); if (point > 0) { memmove (&str[neg + 2], &str[neg + 1], len - neg); str[neg + 1] = '.'; } sprintf (&str[len + point - 1], "E%ld", expt); } } return str; } /* We need the next two functions since GNU MP insists on giving us an extra parameter. */ static void *gmp_realloc (void *ptr, size_t UNUSED (old_size), size_t new_size) { return xrealloc (ptr, new_size); } static void gmp_free (void *ptr, size_t UNUSED (size)) { xfree (ptr); } void init_number_gmp () { mp_set_memory_functions ((void *(*) (size_t)) xmalloc, gmp_realloc, gmp_free); /* Numbers with smaller exponents than this are printed in scientific notation. */ float_print_min = -4; /* Numbers with larger exponents than this are printed in scientific notation. */ float_print_max = 8; /* Prepare the bignum/bigfloat random number generator */ gmp_randinit_default (random_state); gmp_randseed_ui (random_state, qxe_getpid () + time (NULL)); }