-/* Copyright (C) 1995,1996,1997, 2000, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997, 2000, 2001, 2003 Free Software Foundation, Inc.
*
- * This program 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.
- *
- * This program 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 this software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
- *
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
+ * This library 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
+ * Lesser General Public License for more details.
*
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice. */
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
-/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
- gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
\f
unsigned long
scm_string_hash (const unsigned char *str, size_t len)
{
- if (len > 5)
- {
- size_t i = 5;
- unsigned long h = 264;
- while (i--)
- h = (h << 8) + (unsigned) str[h % len];
- return h;
- }
- else
- {
- size_t i = len;
- unsigned long h = 0;
- while (i)
- h = (h << 8) + (unsigned) str[--i];
- return h;
- }
+ /* from suggestion at: */
+ /* http://srfi.schemers.org/srfi-13/mail-archive/msg00112.html */
+
+ unsigned long h = 0;
+ while (len-- > 0)
+ h = *str++ + h*37;
+ return h;
}
return SCM_INUM(obj) % n; /* SCM_INUMP(obj) */
case scm_tc3_imm24:
if (SCM_CHARP(obj))
- return (unsigned)(scm_downcase(SCM_CHAR(obj))) % n;
+ return (unsigned)(scm_c_downcase(SCM_CHAR(obj))) % n;
switch (SCM_UNPACK (obj)) {
#ifndef SICP
case SCM_UNPACK(SCM_EOL):
default:
return 263 % n;
case scm_tc7_smob:
+ return 263 % n;
+ case scm_tc7_number:
switch SCM_TYP16 (obj) {
case scm_tc16_big:
return SCM_INUM (scm_modulo (obj, SCM_MAKINUM (n)));
- default:
- return 263 % n;
case scm_tc16_real:
{
double r = SCM_REAL_VALUE (obj);
return SCM_INUM (scm_modulo (obj, SCM_MAKINUM (n)));
}
}
+ /* Fall through */
case scm_tc16_complex:
+ case scm_tc16_fraction:
obj = scm_number_to_string (obj, SCM_MAKINUM (10));
+ /* Fall through */
}
+ /* Fall through */
case scm_tc7_string:
- case scm_tc7_substring:
return scm_string_hash (SCM_STRING_UCHARS (obj), SCM_STRING_LENGTH (obj)) % n;
case scm_tc7_symbol:
return SCM_SYMBOL_HASH (obj) % n;
case scm_tc7_vector:
{
size_t len = SCM_VECTOR_LENGTH(obj);
- SCM *data = SCM_VELTS(obj);
+ SCM const *data = SCM_VELTS(obj);
if (len > 5)
{
size_t i = d/2;
scm_ihashv (SCM obj, unsigned long n)
{
if (SCM_CHARP(obj))
- return ((unsigned long) (scm_downcase (SCM_CHAR (obj)))) % n; /* downcase!?!! */
+ return ((unsigned long) (scm_c_downcase (SCM_CHAR (obj)))) % n; /* downcase!?!! */
if (SCM_NUMP(obj))
return (unsigned long) scm_hasher(obj, n, 10);
void
scm_init_hash ()
{
-#ifndef SCM_MAGIC_SNARFER
#include "libguile/hash.x"
-#endif
}
HCoop / bpt / guile.git / blobdiff