X-Git-Url: http://git.hcoop.net/bpt/guile.git/blobdiff_plain/b4309c3c5aaaf14b91c9adbec5a668e7013774fe..e50186ab08383002122e51b277898f3b8cb6cc75:/libguile/numbers.h

diff --git a/libguile/numbers.h b/libguile/numbers.h
dissimilarity index 77%
index 170eeda98..c8ec73530 100644
--- a/libguile/numbers.h
+++ b/libguile/numbers.h
@@ -1,436 +1,371 @@
-/* classes: h_files */
-
-#ifndef NUMBERSH
-#define NUMBERSH
-/*	Copyright (C) 1995,1996 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, 675 Mass Ave, Cambridge, MA 02139, 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.  
- */
-
-
-#include "libguile/__scm.h"
-
-
-
-
-/* Immediate Numbers 
- *
- * Inums are exact integer data that fits within an SCM word.
- *
- * SCM_INUMP applies only to values known to be Scheme objects.
- * In particular, SCM_INUMP (SCM_CAR (x)) is valid only if x is known
- * to be a SCM_CONSP.  If x is only known to be a SCM_NIMP, 
- * SCM_INUMP (SCM_CAR (x)) can give wrong answers.
- */
-
-#define SCM_INUMP(x)	(2 & (int)(x))
-#define SCM_NINUMP(x) 	(!SCM_INUMP(x))
-
-#ifdef __TURBOC__
-/* shifts of more than one are done by a library call, single shifts are
- * performed in registers
- */
-# define SCM_MAKINUM(x) ((((x)<<1)<<1)+2L)
-#else
-# define SCM_MAKINUM(x) (((x)<<2)+2L)
-#endif /* def __TURBOC__ */
-
-
-/* SCM_SRS is signed right shift */
-/* Turbo C++ v1.0 has a bug with right shifts of signed longs!
- * It is believed to be fixed in Turbo C++ v1.01
- */
-#if (-1==(((-1)<<2)+2)>>2) && (__TURBOC__ != 0x295)
-# define SCM_SRS(x, y) ((x)>>y)
-# ifdef __TURBOC__
-#  define SCM_INUM(x) (((x)>>1)>>1)
-# else
-#  define SCM_INUM(x) SCM_SRS(x, 2)
-# endif /* def __TURBOC__ */
-#else
-# define SCM_SRS(x, y) (((x)<0) ? ~((~(x))>>y) : (x)>>y)
-# define SCM_INUM(x) SCM_SRS(x, 2)
-#endif /*  (-1==(((-1)<<2)+2)>>2) && (__TURBOC__ != 0x295) */
-
-
-/* A name for 0.
- */
-#define SCM_INUM0 ((SCM) 2)
-
-
-
-/* SCM_FIXABLE is non-0 if its long argument can be encoded in an SCM_INUM.
- */
-#define SCM_POSSCM_FIXABLE(n) ((n) <= SCM_MOST_POSITIVE_FIXNUM)
-#define SCM_NEGSCM_FIXABLE(n) ((n) >= SCM_MOST_NEGATIVE_FIXNUM)
-#define SCM_UNEGSCM_FIXABLE(n) ((n) <= -SCM_MOST_NEGATIVE_FIXNUM)
-#define SCM_FIXABLE(n) (SCM_POSSCM_FIXABLE(n) && SCM_NEGSCM_FIXABLE(n))
-
-/* SCM_INTBUFLEN is the maximum number of characters neccessary for the
- * printed or scm_string representation of an exact immediate.
- */
-
-#ifndef SCM_CHAR_BIT
-# define SCM_CHAR_BIT 8
-#endif /* ndef SCM_CHAR_BIT */
-#ifndef SCM_LONG_BIT
-# define SCM_LONG_BIT (SCM_CHAR_BIT*sizeof(long)/sizeof(char))
-#endif /* ndef SCM_LONG_BIT */
-#define SCM_INTBUFLEN (5+SCM_LONG_BIT)
-
-/* SCM_FLOBUFLEN is the maximum number of characters neccessary for the
- * printed or scm_string representation of an inexact number.
- */
-
-#define SCM_FLOBUFLEN (10+2*(sizeof(double)/sizeof(char)*SCM_CHAR_BIT*3+9)/10)
-
-
-
-
-/* Numbers 
- */
-
-#define SCM_INEXP(x) (SCM_TYP16(x)==scm_tc16_flo)
-#define SCM_CPLXP(x) (SCM_CAR(x)==scm_tc_dblc)
-#define SCM_REAL(x) (*(((scm_dbl *) (SCM2PTR(x)))->real))
-#define SCM_IMAG(x) (*((double *)(SCM_CHARS(x)+sizeof(double))))
-/* ((&SCM_REAL(x))[1]) */
-
-
-#ifdef SCM_SINGLES
-#define SCM_REALP(x) ((~SCM_REAL_PART & SCM_CAR(x))==scm_tc_flo)
-#define SCM_SINGP(x) (SCM_CAR(x)==scm_tc_flo)
-#define SCM_FLO(x) (((scm_flo *)(SCM2PTR(x)))->num)
-#define SCM_REALPART(x) (SCM_SINGP(x)?0.0+SCM_FLO(x):SCM_REAL(x))
-#else /* SCM_SINGLES */
-#define SCM_REALP(x) (SCM_CAR(x)==scm_tc_dblr)
-#define SCM_REALPART SCM_REAL
-#endif /* SCM_SINGLES */
-
-
-/* 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 ((scm_sizet)((sizeof(long)*SCM_CHAR_BIT+SCM_BITSPERDIG-1)/SCM_BITSPERDIG))
-# define SCM_DIGSPERLONGLONG ((scm_sizet)((sizeof(long long)*SCM_CHAR_BIT+SCM_BITSPERDIG-1)/SCM_BITSPERDIG))
-# define SCM_BIGUP(x) ((unsigned long)(x) << SCM_BITSPERDIG)
-# define SCM_LONGLONGSCM_BIGUP(x) ((ulong_long)(x) << SCM_BITSPERDIG)
-# 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
-# define NO_SCM_BIGDIG
-# ifndef SCM_FLOATS
-#  define SCM_INUMS_ONLY
-# endif /* ndef SCM_FLOATS */
-#endif /* ndef SCM_BIGDIG */
-
-#ifdef SCM_FLOATS
-#define SCM_NUMBERP(x) (SCM_INUMP(x) || (SCM_NIMP(x) && SCM_NUMP(x)))
-#else
-#ifdef SCM_BIGDIG
-#define SCM_NUMBERP(x) (SCM_INUMP(x) || (SCM_NIMP(x) && SCM_NUMP(x)))
-#else
-#define SCM_NUMBERP SCM_INUMP
-#endif
-#endif
-#define SCM_NUMP(x) ((0xfcff & (int)SCM_CAR(x))==scm_tc7_smob)
-#define SCM_BIGP(x) (SCM_TYP16S(x)==scm_tc16_bigpos)
-#define SCM_BIGSIGN(x) (0x0100 & (int)SCM_CAR(x))
-#define SCM_BDIGITS(x) ((SCM_BIGDIG *)(SCM_CDR(x)))
-#define SCM_NUMDIGS(x) ((scm_sizet)(SCM_CAR(x)>>16))
-#define SCM_SETNUMDIGS(x, v, t) SCM_CAR(x) = (((v)+0L)<<16)+(t)
-
-
-#ifdef SCM_FLOATS
-typedef struct scm_dblproc
-{
-  char *scm_string;
-  double (*cproc) ();
-} scm_dblproc;
-
-#ifdef SCM_SINGLES
-typedef struct scm_flo
-{
-  SCM type;
-  float num;
-} scm_flo;
-#endif
-
-typedef struct scm_dbl
-{
-  SCM type;
-  double *real;
-} scm_dbl;
-#endif
-
-
-
-
-#ifdef __STDC__
-extern SCM scm_exact_p(SCM x);
-extern SCM scm_odd_p(SCM n);
-extern SCM scm_even_p(SCM n);
-extern SCM scm_abs(SCM x);
-extern SCM scm_quotient(SCM x, SCM y);
-extern SCM scm_remainder(SCM x, SCM y);
-extern SCM scm_modulo(SCM x, SCM y);
-extern SCM scm_gcd(SCM x, SCM y);
-extern SCM scm_lcm(SCM n1, SCM n2);
-extern SCM scm_logand(SCM n1, SCM n2);
-extern SCM scm_logior(SCM n1, SCM n2);
-extern SCM scm_logxor(SCM n1, SCM n2);
-extern SCM scm_logtest(SCM n1, SCM n2);
-extern SCM scm_logbit_p(SCM n1, SCM n2);
-extern SCM scm_logand(SCM n1, SCM n2);
-extern SCM scm_logior(SCM n1, SCM n2);
-extern SCM scm_logxor(SCM n1, SCM n2);
-extern SCM scm_logtest(SCM n1, SCM n2);
-extern SCM scm_logbit_p(SCM n1, SCM n2);
-extern SCM scm_lognot(SCM n);
-extern SCM scm_integer_expt(SCM z1, SCM z2);
-extern SCM scm_ash(SCM n, SCM cnt);
-extern SCM scm_bit_extract(SCM n, SCM start, SCM end);
-extern SCM scm_logcount (SCM n);
-extern SCM scm_integer_length(SCM n);
-extern SCM scm_mkbig(scm_sizet nlen, int sign);
-extern SCM scm_big2inum(SCM b, scm_sizet l);
-extern SCM scm_adjbig(SCM b, scm_sizet nlen);
-extern SCM scm_normbig(SCM b);
-extern SCM scm_copybig(SCM b, int sign);
-extern SCM scm_long2big(long n);
-extern SCM scm_long_long2big(long_long n);
-extern SCM scm_2ulong2big(unsigned long * np);
-extern SCM scm_ulong2big(unsigned long n);
-extern int scm_bigcomp(SCM x, SCM y);
-extern long scm_pseudolong(long x);
-extern void scm_longdigs(long x, SCM_BIGDIG digs[]);
-extern SCM scm_addbig(SCM_BIGDIG *x, scm_sizet nx, int xsgn, SCM bigy, int sgny);
-extern SCM scm_mulbig(SCM_BIGDIG *x, scm_sizet nx, SCM_BIGDIG *y, scm_sizet ny, int sgn);
-extern unsigned int scm_divbigdig(SCM_BIGDIG *ds, scm_sizet h, SCM_BIGDIG div);
-extern SCM scm_divbigint(SCM x, long z, int sgn, int mode);
-extern SCM scm_divbigbig(SCM_BIGDIG *x, scm_sizet nx, SCM_BIGDIG *y, scm_sizet ny, int sgn, int modes);
-extern scm_sizet scm_iint2str(long num, int rad, char *p);
-extern SCM scm_number_to_string(SCM x, SCM radix);
-extern int scm_floprint(SCM sexp, SCM port, int writing);
-extern int scm_bigprint(SCM exp, SCM port, int writing);
-extern SCM scm_istr2int(char *str, long len, long radix);
-extern SCM scm_istr2int(char *str, long len, long radix);
-extern SCM scm_istr2flo(char *str, long len, long radix);
-extern SCM scm_istring2number(char *str, long len, long radix);
-extern SCM scm_string_to_number(SCM str, SCM radix);
-extern SCM scm_makdbl (double x, double y);
-extern SCM scm_bigequal(SCM x, SCM y);
-extern SCM scm_floequal(SCM x, SCM y);
-extern SCM scm_number_p(SCM x);
-extern SCM scm_real_p(SCM x);
-extern SCM scm_int_p(SCM x);
-extern SCM scm_inexact_p(SCM x);
-extern SCM scm_num_eq_p (SCM x, SCM y);
-extern SCM scm_less_p(SCM x, SCM y);
-extern SCM scm_gr_p(SCM x, SCM y);
-extern SCM scm_leq_p(SCM x, SCM y);
-extern SCM scm_geq_p(SCM x, SCM y);
-extern SCM scm_zero_p(SCM z);
-extern SCM scm_positive_p(SCM x);
-extern SCM scm_negative_p(SCM x);
-extern SCM scm_max(SCM x, SCM y);
-extern SCM scm_min(SCM x, SCM y);
-extern SCM scm_sum(SCM x, SCM y);
-extern SCM scm_difference(SCM x, SCM y);
-extern SCM scm_product(SCM x, SCM y);
-extern double scm_num2dbl (SCM a, char * why);
-extern SCM scm_fuck (SCM a);
-extern SCM scm_divide(SCM x, SCM y);
-extern double scm_asinh(double x);
-extern double scm_acosh(double x);
-extern double scm_atanh(double x);
-extern double scm_truncate(double x);
-extern double scm_round(double x);
-extern double scm_exact_to_inexact(double z);
-extern SCM scm_sys_expt(SCM z1, SCM z2);
-extern SCM scm_sys_atan2(SCM z1, SCM z2);
-extern SCM scm_make_rectangular(SCM z1, SCM z2);
-extern SCM scm_make_polar(SCM z1, SCM z2);
-extern SCM scm_real_part(SCM z);
-extern SCM scm_imag_part(SCM z);
-extern SCM scm_magnitude(SCM z);
-extern SCM scm_angle(SCM z);
-extern SCM scm_inexact_to_exact(SCM z);
-extern SCM scm_trunc(SCM x);
-extern SCM scm_dbl2big(double d);
-extern double scm_big2dbl(SCM b);
-extern SCM scm_long2num(long sl);
-extern SCM scm_long_long2num(long_long sl);
-extern SCM scm_ulong2num(unsigned long sl);
-extern long scm_num2long(SCM num, char *pos, char *s_caller);
-extern long num2long(SCM num, char *pos, char *s_caller);
-extern long_long scm_num2long_long(SCM num, char *pos, char *s_caller);
-extern unsigned long scm_num2ulong(SCM num, char *pos, char *s_caller);
-extern void scm_init_numbers (void);
-
-#else /* STDC */
-extern SCM scm_exact_p();
-extern SCM scm_odd_p();
-extern SCM scm_even_p();
-extern SCM scm_abs();
-extern SCM scm_quotient();
-extern SCM scm_remainder();
-extern SCM scm_modulo();
-extern SCM scm_gcd();
-extern SCM scm_lcm();
-extern SCM scm_logand();
-extern SCM scm_logior();
-extern SCM scm_logxor();
-extern SCM scm_logtest();
-extern SCM scm_logbit_p();
-extern SCM scm_logand();
-extern SCM scm_logior();
-extern SCM scm_logxor();
-extern SCM scm_logtest();
-extern SCM scm_logbit_p();
-extern SCM scm_lognot();
-extern SCM scm_integer_expt();
-extern SCM scm_ash();
-extern SCM scm_bit_extract();
-extern SCM scm_logcount ();
-extern SCM scm_integer_length();
-extern SCM scm_mkbig();
-extern SCM scm_big2inum();
-extern SCM scm_adjbig();
-extern SCM scm_normbig();
-extern SCM scm_copybig();
-extern SCM scm_long2big();
-extern SCM scm_long_long2big();
-extern SCM scm_2ulong2big();
-extern SCM scm_ulong2big();
-extern int scm_bigcomp();
-extern long scm_pseudolong();
-extern void scm_longdigs();
-extern SCM scm_addbig();
-extern SCM scm_mulbig();
-extern unsigned int scm_divbigdig();
-extern SCM scm_divbigint();
-extern SCM scm_divbigbig();
-extern scm_sizet scm_iint2str();
-extern SCM scm_number_to_string();
-extern int scm_floprint();
-extern int scm_bigprint();
-extern SCM scm_istr2int();
-extern SCM scm_istr2int();
-extern SCM scm_istr2flo();
-extern SCM scm_istring2number();
-extern SCM scm_string_to_number();
-extern SCM scm_makdbl ();
-extern SCM scm_bigequal();
-extern SCM scm_floequal();
-extern SCM scm_number_p();
-extern SCM scm_real_p();
-extern SCM scm_int_p();
-extern SCM scm_inexact_p();
-extern SCM scm_num_eq_p ();
-extern SCM scm_less_p();
-extern SCM scm_gr_p();
-extern SCM scm_leq_p();
-extern SCM scm_geq_p();
-extern SCM scm_zero_p();
-extern SCM scm_positive_p();
-extern SCM scm_negative_p();
-extern SCM scm_max();
-extern SCM scm_min();
-extern SCM scm_sum();
-extern SCM scm_difference();
-extern SCM scm_product();
-extern double scm_num2dbl ();
-extern SCM scm_fuck ();
-extern SCM scm_divide();
-extern double scm_asinh();
-extern double scm_acosh();
-extern double scm_atanh();
-extern double scm_truncate();
-extern double scm_round();
-extern double scm_exact_to_inexact();
-extern SCM scm_sys_expt();
-extern SCM scm_sys_atan2();
-extern SCM scm_make_rectangular();
-extern SCM scm_make_polar();
-extern SCM scm_real_part();
-extern SCM scm_imag_part();
-extern SCM scm_magnitude();
-extern SCM scm_angle();
-extern SCM scm_inexact_to_exact();
-extern SCM scm_trunc();
-extern SCM scm_dbl2big();
-extern double scm_big2dbl();
-extern SCM scm_long2num();
-extern SCM scm_long_long2num();
-extern SCM scm_ulong2num();
-extern long scm_num2long();
-extern long num2long();
-extern long_long scm_num2long_long();
-extern unsigned long scm_num2ulong();
-extern void scm_init_numbers ();
-
-#endif /* STDC */
-
-
-
-#endif  /* NUMBERSH */
+/* classes: h_files */
+
+#ifndef SCM_NUMBERS_H
+#define SCM_NUMBERS_H
+
+/* 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 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.
+ *
+ * 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.  */
+
+
+
+#include "libguile/__scm.h"
+#include "libguile/print.h"
+
+#if defined (HAVE_FLOATINGPOINT_H)
+#include <floatingpoint.h>
+#endif
+
+#if defined (HAVE_IEEEFP_H)
+#include <ieeefp.h>
+#endif
+
+#if defined (HAVE_NAN_H)
+#if defined (SCO)
+#define _IEEE 1
+#endif
+#include <nan.h>
+#if defined (SCO)
+#undef _IEEE
+#endif
+#endif
+
+
+
+/* Immediate Numbers, also known as fixnums
+ *
+ * Inums are exact integer data that fits within an SCM word.  */
+
+/* SCM_T_SIGNED_MAX is                 (- (expt 2 n) 1),
+ * SCM_MOST_POSITIVE_FIXNUM should be  (- (expt 2 (- n 2)) 1)
+ * which is the same as                (/ (- (expt 2 n) 4) 4)
+ */
+
+#define SCM_I_FIXNUM_BIT         (SCM_LONG_BIT - 2)
+#define SCM_MOST_POSITIVE_FIXNUM ((SCM_T_SIGNED_BITS_MAX-3)/4)
+#define SCM_MOST_NEGATIVE_FIXNUM (-SCM_MOST_POSITIVE_FIXNUM-1)
+
+/* SCM_SRS is signed right shift */
+#if (-1 == (((-1) << 2) + 2) >> 2)
+# define SCM_SRS(x, y) ((x) >> (y))
+#else
+# define SCM_SRS(x, y) ((x) < 0 ? ~((~(x)) >> (y)) : ((x) >> (y)))
+#endif /* (-1 == (((-1) << 2) + 2) >> 2) */
+
+
+#define SCM_INUMP(x)	(2 & SCM_UNPACK (x))
+#define SCM_NINUMP(x) 	(!SCM_INUMP (x))
+#define SCM_MAKINUM(x)  (SCM_PACK ((((scm_t_signed_bits) (x)) << 2) + 2))
+#define SCM_INUM(x)     (SCM_SRS ((scm_t_signed_bits) SCM_UNPACK (x), 2))
+
+
+/* SCM_FIXABLE is true if its long argument can be encoded in an SCM_INUM. */
+#define SCM_POSFIXABLE(n) ((n) <= SCM_MOST_POSITIVE_FIXNUM)
+#define SCM_NEGFIXABLE(n) ((n) >= SCM_MOST_NEGATIVE_FIXNUM)
+#define SCM_FIXABLE(n) (SCM_POSFIXABLE (n) && SCM_NEGFIXABLE (n))
+
+
+/* A name for 0. */
+#define SCM_INUM0 (SCM_MAKINUM (0))
+
+
+/* SCM_MAXEXP is the maximum double precision exponent
+ * SCM_FLTMAX is less than or scm_equal the largest single precision float
+ */
+
+#ifdef STDC_HEADERS
+#ifndef GO32
+#include <float.h>
+#endif /* ndef GO32 */
+#endif /* def STDC_HEADERS */
+#ifdef DBL_MAX_10_EXP
+#define SCM_MAXEXP DBL_MAX_10_EXP
+#else
+#define SCM_MAXEXP 308		/* IEEE doubles */
+#endif /* def DBL_MAX_10_EXP */
+#ifdef FLT_MAX
+#define SCM_FLTMAX FLT_MAX
+#else
+#define SCM_FLTMAX 1e+23
+#endif /* def FLT_MAX */
+
+
+/* SCM_INTBUFLEN is the maximum number of characters neccessary for the
+ * printed or scm_string representation of an exact immediate.
+ */
+#define SCM_INTBUFLEN (5 + SCM_LONG_BIT)
+
+
+
+/* Numbers 
+ */
+
+#define SCM_SLOPPY_INEXACTP(x) (SCM_TYP16S (x) == scm_tc16_real)
+#define SCM_SLOPPY_REALP(x) (SCM_TYP16 (x) == scm_tc16_real)
+#define SCM_SLOPPY_COMPLEXP(x) (SCM_TYP16 (x) == scm_tc16_complex)
+#define SCM_INEXACTP(x) (!SCM_IMP (x) && SCM_TYP16S (x) == scm_tc16_real)
+#define SCM_REALP(x) (!SCM_IMP (x) && SCM_TYP16 (x) == scm_tc16_real)
+#define SCM_COMPLEXP(x) (!SCM_IMP (x) && SCM_TYP16 (x) == scm_tc16_complex)
+
+#define SCM_REAL_VALUE(x) (((scm_t_double *) SCM2PTR (x))->real)
+#define SCM_COMPLEX_MEM(x) ((scm_t_complex *) SCM_CELL_WORD_1 (x))
+#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 */
+
+#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))
+
+
+
+typedef struct scm_t_double
+{
+  SCM type;
+  SCM pad;
+  double real;
+} scm_t_double;
+
+typedef struct scm_t_complex
+{
+  double real;
+  double imag;
+} scm_t_complex;
+
+
+
+SCM_API SCM scm_exact_p (SCM x);
+SCM_API SCM scm_odd_p (SCM n);
+SCM_API SCM scm_even_p (SCM n);
+SCM_API SCM scm_inf_p (SCM n);
+SCM_API SCM scm_nan_p (SCM n);
+SCM_API SCM scm_inf (void);
+SCM_API SCM scm_nan (void);
+SCM_API SCM scm_abs (SCM x);
+SCM_API SCM scm_quotient (SCM x, SCM y);
+SCM_API SCM scm_remainder (SCM x, SCM y);
+SCM_API SCM scm_modulo (SCM x, SCM y);
+SCM_API SCM scm_gcd (SCM x, SCM y);
+SCM_API SCM scm_lcm (SCM n1, SCM n2);
+SCM_API SCM scm_logand (SCM n1, SCM n2);
+SCM_API SCM scm_logior (SCM n1, SCM n2);
+SCM_API SCM scm_logxor (SCM n1, SCM n2);
+SCM_API SCM scm_logtest (SCM n1, SCM n2);
+SCM_API SCM scm_logbit_p (SCM n1, SCM n2);
+SCM_API SCM scm_lognot (SCM n);
+SCM_API SCM scm_integer_expt (SCM z1, SCM z2);
+SCM_API SCM scm_ash (SCM n, SCM cnt);
+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 (ptrdiff_t n);
+
+#ifdef HAVE_LONG_LONGS
+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 int scm_print_complex (SCM sexp, SCM port, scm_print_state *pstate);
+SCM_API int scm_bigprint (SCM exp, SCM port, scm_print_state *pstate);
+SCM_API SCM scm_i_mem2number (const char *mem, size_t len, unsigned int radix);
+SCM_API SCM scm_string_to_number (SCM str, SCM radix);
+SCM_API SCM scm_make_real (double x);
+SCM_API SCM scm_make_complex (double x, double y);
+SCM_API SCM scm_bigequal (SCM x, SCM y);
+SCM_API SCM scm_real_equalp (SCM x, SCM y);
+SCM_API SCM scm_complex_equalp (SCM x, SCM y);
+SCM_API SCM scm_number_p (SCM x);
+SCM_API SCM scm_real_p (SCM x);
+SCM_API SCM scm_integer_p (SCM x);
+SCM_API SCM scm_inexact_p (SCM x);
+SCM_API SCM scm_num_eq_p (SCM x, SCM y);
+SCM_API SCM scm_less_p (SCM x, SCM y);
+SCM_API SCM scm_gr_p (SCM x, SCM y);
+SCM_API SCM scm_leq_p (SCM x, SCM y);
+SCM_API SCM scm_geq_p (SCM x, SCM y);
+SCM_API SCM scm_zero_p (SCM z);
+SCM_API SCM scm_positive_p (SCM x);
+SCM_API SCM scm_negative_p (SCM x);
+SCM_API SCM scm_max (SCM x, SCM y);
+SCM_API SCM scm_min (SCM x, SCM y);
+SCM_API SCM scm_sum (SCM x, SCM y);
+SCM_API SCM scm_difference (SCM x, SCM y);
+SCM_API SCM scm_product (SCM x, SCM y);
+SCM_API double scm_num2dbl (SCM a, const char * why);
+SCM_API SCM scm_divide (SCM x, SCM y);
+SCM_API double scm_asinh (double x);
+SCM_API double scm_acosh (double x);
+SCM_API double scm_atanh (double x);
+SCM_API double scm_truncate (double x);
+SCM_API double scm_round (double x);
+SCM_API SCM scm_sys_expt (SCM z1, SCM z2);
+SCM_API SCM scm_sys_atan2 (SCM z1, SCM z2);
+SCM_API SCM scm_make_rectangular (SCM z1, SCM z2);
+SCM_API SCM scm_make_polar (SCM z1, SCM z2);
+SCM_API SCM scm_real_part (SCM z);
+SCM_API SCM scm_imag_part (SCM z);
+SCM_API SCM scm_magnitude (SCM z);
+SCM_API SCM scm_angle (SCM z);
+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 SCM scm_int2num (int n);
+SCM_API SCM scm_uint2num (unsigned int n);
+SCM_API SCM scm_long2num (long n);
+SCM_API SCM scm_ulong2num (unsigned long n);
+SCM_API SCM scm_size2num (size_t n);
+SCM_API SCM scm_ptrdiff2num (ptrdiff_t n);
+SCM_API short scm_num2short (SCM num, unsigned long int pos,
+			     const char *s_caller);
+SCM_API unsigned short scm_num2ushort (SCM num, unsigned long int pos,
+				       const char *s_caller);
+SCM_API int scm_num2int (SCM num, unsigned long int pos,
+			 const char *s_caller);
+SCM_API unsigned int scm_num2uint (SCM num, unsigned long int pos,
+				   const char *s_caller);
+SCM_API long scm_num2long (SCM num, unsigned long int pos,
+			   const char *s_caller);
+SCM_API unsigned long scm_num2ulong (SCM num, unsigned long int pos,
+				     const char *s_caller);
+SCM_API ptrdiff_t scm_num2ptrdiff (SCM num, unsigned long int pos,
+				   const char *s_caller);
+SCM_API size_t scm_num2size (SCM num, unsigned long int pos,
+			     const char *s_caller);
+#ifdef HAVE_LONG_LONGS
+SCM_API SCM scm_long_long2num (long long sl);
+SCM_API SCM scm_ulong_long2num (unsigned long long sl);
+SCM_API long long scm_num2long_long (SCM num, unsigned long int pos,
+				     const char *s_caller);
+SCM_API unsigned long long scm_num2ulong_long (SCM num, unsigned long int pos,
+					       const char *s_caller);
+#endif
+
+SCM_API SCM scm_float2num (float n);
+SCM_API SCM scm_double2num (double n);
+SCM_API float scm_num2float (SCM num, unsigned long int pos,
+			     const char *s_caller);
+SCM_API double scm_num2double (SCM num, unsigned long int pos,
+			       const char *s_caller);
+
+#ifdef GUILE_DEBUG
+SCM_API SCM scm_sys_check_number_conversions (void);
+#endif
+
+SCM_API void scm_init_numbers (void);
+
+#endif  /* SCM_NUMBERS_H */
+
+/*
+  Local Variables:
+  c-file-style: "gnu"
+  End:
+*/