mirror/guile
mirror/guile
1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-04-30 11:50:28 +02:00
Code Activity
guile/libguile/numbers.h
Marius Vollmer 232898d93d Conditionally include floatingpoint.h, ieeefp.h, and nan.h. Provide 
declarations for scm_inf_p, scm_nan_p, scn_inf, and scm_nan.
2002-05-06 22:27:42 +00:00

371 lines
13 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* 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:
*/
View git blame Copy permalink