/* Copyright (C) 1995,1996,1998,2000,2001 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 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.
*
- * This program is distributed in the hope that it will be useful,
+ * 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 General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser 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.
- *
- * 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.
- *
- * 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
+ */
\f
#define SCM_COMPLEX_REAL(x) (SCM_COMPLEX_MEM (x)->real)
#define SCM_COMPLEX_IMAG(x) (SCM_COMPLEX_MEM (x)->imag)
-/* Define SCM_BIGDIG to an integer type whose size is smaller than long if
- * you want bignums. SCM_BIGRAD is one greater than the biggest SCM_BIGDIG.
- *
- * Define SCM_DIGSTOOBIG if the digits equivalent to a long won't fit in a long.
- */
-#ifdef BIGNUMS
-# ifdef _UNICOS
-# define SCM_DIGSTOOBIG
-# if (1L << 31) <= SCM_USHRT_MAX
-# define SCM_BIGDIG unsigned short
-# else
-# define SCM_BIGDIG unsigned int
-# endif /* (1L << 31) <= USHRT_MAX */
-# define SCM_BITSPERDIG 32
-# else
-# define SCM_BIGDIG unsigned short
-# define SCM_BITSPERDIG (sizeof(SCM_BIGDIG)*SCM_CHAR_BIT)
-# endif /* def _UNICOS */
-
-# define SCM_BIGRAD (1L << SCM_BITSPERDIG)
-# define SCM_DIGSPERLONG ((size_t)((sizeof(long)*SCM_CHAR_BIT+SCM_BITSPERDIG-1)/SCM_BITSPERDIG))
-# define SCM_I_BIGUP(type, x) ((type)(x) << SCM_BITSPERDIG)
-# define SCM_BIGUP(x) SCM_I_BIGUP (unsigned long, x)
-# define SCM_LONGLONGBIGUP(x) SCM_I_BIGUP (unsigned long long, x)
-# define SCM_BIGDN(x) ((x) >> SCM_BITSPERDIG)
-# define SCM_BIGLO(x) ((x) & (SCM_BIGRAD-1))
-#endif /* def BIGNUMS */
-
-#ifndef SCM_BIGDIG
-/* Definition is not really used but helps various function
- * prototypes to compile with conditionalization.
- */
-# define SCM_BIGDIG unsigned short
-#endif /* ndef SCM_BIGDIG */
+/* Each bignum is just an mpz_t stored in a double cell starting at word 1. */
+#define SCM_I_BIG_MPZ(x) (*((mpz_t *) (&(SCM_CELL_WORD_1(x)))))
+#define SCM_BIGP(x) (!SCM_IMP (x) && SCM_TYP16 (x) == scm_tc16_big)
#define SCM_NUMBERP(x) (SCM_INUMP(x) || SCM_NUMP(x))
-#define SCM_NUMP(x) (!SCM_IMP(x) && (0xfcff & SCM_CELL_TYPE (x)) == scm_tc7_smob)
-#define SCM_BIGP(x) (!SCM_IMP (x) && (SCM_TYP16 (x) == scm_tc16_big))
-#define SCM_BIGSIGNFLAG 0x10000L
-#define SCM_BIGSIZEFIELD 17
-#define SCM_BIGSIGN(x) (SCM_CELL_WORD_0 (x) & SCM_BIGSIGNFLAG)
-#define SCM_BDIGITS(x) ((SCM_BIGDIG *) (SCM_CELL_WORD_1 (x)))
-#define SCM_SET_BIGNUM_BASE(n, b) (SCM_SET_CELL_WORD_1 ((n), (b)))
-#define SCM_NUMDIGS(x) ((size_t) (SCM_CELL_WORD_0 (x) >> SCM_BIGSIZEFIELD))
-#define SCM_MAKE_BIGNUM_TAG(v, sign) \
- (scm_tc16_big \
- | ((sign) ? SCM_BIGSIGNFLAG : 0) \
- | (((v) + 0L) << SCM_BIGSIZEFIELD))
-#define SCM_SETNUMDIGS(x, v, sign) \
- SCM_SET_CELL_WORD_0 (x, SCM_MAKE_BIGNUM_TAG (v, sign))
+#define SCM_NUMP(x) (!SCM_IMP(x) \
+ && (0xfcff & SCM_CELL_TYPE (x)) == scm_tc7_smob)
\f
SCM_API SCM scm_bit_extract (SCM n, SCM start, SCM end);
SCM_API SCM scm_logcount (SCM n);
SCM_API SCM scm_integer_length (SCM n);
-SCM_API SCM scm_i_mkbig (size_t nlen, int sign);
-SCM_API SCM scm_i_big2inum (SCM b, size_t l);
-SCM_API SCM scm_i_adjbig (SCM b, size_t nlen);
-SCM_API SCM scm_i_normbig (SCM b);
-SCM_API SCM scm_i_copybig (SCM b, int sign);
-SCM_API SCM scm_i_short2big (short n);
-SCM_API SCM scm_i_ushort2big (unsigned short n);
-SCM_API SCM scm_i_int2big (int n);
-SCM_API SCM scm_i_uint2big (unsigned int n);
-SCM_API SCM scm_i_long2big (long n);
-SCM_API SCM scm_i_ulong2big (unsigned long n);
-SCM_API SCM scm_i_size2big (size_t n);
-SCM_API SCM scm_i_ptrdiff2big (scm_t_ptrdiff n);
-
-#if SCM_SIZEOF_LONG_LONG != 0
-SCM_API SCM scm_i_long_long2big (long long n);
-SCM_API SCM scm_i_ulong_long2big (unsigned long long n);
-#endif
-SCM_API int scm_bigcomp (SCM x, SCM y);
-SCM_API long scm_pseudolong (long x);
-SCM_API void scm_longdigs (long x, SCM_BIGDIG digs[]);
-SCM_API SCM scm_addbig (SCM_BIGDIG *x, size_t nx, int xsgn, SCM bigy, int sgny);
-SCM_API SCM scm_mulbig (SCM_BIGDIG *x, size_t nx, SCM_BIGDIG *y, size_t ny, int sgn);
-SCM_API unsigned int scm_divbigdig (SCM_BIGDIG *ds, size_t h, SCM_BIGDIG div);
SCM_API size_t scm_iint2str (long num, int rad, char *p);
SCM_API SCM scm_number_to_string (SCM x, SCM radix);
SCM_API int scm_print_real (SCM sexp, SCM port, scm_print_state *pstate);
SCM_API SCM scm_exact_to_inexact (SCM z);
SCM_API SCM scm_inexact_to_exact (SCM z);
SCM_API SCM scm_trunc (SCM x);
-SCM_API SCM scm_i_dbl2big (double d);
-SCM_API double scm_i_big2dbl (SCM b);
SCM_API SCM scm_short2num (short n);
SCM_API SCM scm_ushort2num (unsigned short n);
SCM_API double scm_num2double (SCM num, unsigned long int pos,
const char *s_caller);
+
+/* bignum internal functions */
+SCM_API SCM scm_i_mkbig (void);
+SCM_API SCM scm_i_normbig (SCM x);
+SCM_API int scm_i_bigcmp (SCM a, SCM b);
+SCM_API SCM scm_i_dbl2big (double d);
+SCM_API double scm_i_big2dbl (SCM b);
+SCM_API SCM scm_i_short2big (short n);
+SCM_API SCM scm_i_ushort2big (unsigned short n);
+SCM_API SCM scm_i_int2big (int n);
+SCM_API SCM scm_i_uint2big (unsigned int n);
+SCM_API SCM scm_i_long2big (long n);
+SCM_API SCM scm_i_ulong2big (unsigned long n);
+SCM_API SCM scm_i_size2big (size_t n);
+SCM_API SCM scm_i_ptrdiff2big (scm_t_ptrdiff n);
+
+#if SCM_SIZEOF_LONG_LONG != 0
+SCM_API SCM scm_i_long_long2big (long long n);
+SCM_API SCM scm_i_ulong_long2big (unsigned long long n);
+#endif
+
+
+
#ifdef GUILE_DEBUG
SCM_API SCM scm_sys_check_number_conversions (void);
#endif
HCoop / bpt / guile.git / blobdiff