6 /* Copyright (C) 1995,1996,1998,2000,2001,2002,2003,2004,2005, 2006,
7 * 2008, 2009, 2010, 2011, 2013 Free Software Foundation, Inc.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public License
11 * as published by the Free Software Foundation; either version 3 of
12 * the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
29 #include "libguile/__scm.h"
30 #include "libguile/print.h"
32 #ifndef SCM_T_WCHAR_DEFINED
33 typedef scm_t_int32 scm_t_wchar
;
34 #define SCM_T_WCHAR_DEFINED
35 #endif /* SCM_T_WCHAR_DEFINED */
39 /* Immediate Numbers, also known as fixnums
41 * Inums are exact integer data that fits within an SCM word. */
43 /* SCM_T_SIGNED_MAX is (- (expt 2 n) 1),
44 * SCM_MOST_POSITIVE_FIXNUM should be (- (expt 2 (- n 2)) 1)
45 * which is the same as (/ (- (expt 2 n) 4) 4)
48 #define SCM_I_FIXNUM_BIT (SCM_LONG_BIT - 2)
49 #define SCM_MOST_POSITIVE_FIXNUM ((SCM_T_SIGNED_BITS_MAX-3)/4)
50 #define SCM_MOST_NEGATIVE_FIXNUM (-SCM_MOST_POSITIVE_FIXNUM-1)
52 /* SCM_SRS is signed right shift */
53 #if (-1 == (((-1) << 2) + 2) >> 2)
54 # define SCM_SRS(x, y) ((x) >> (y))
56 # define SCM_SRS(x, y) ((x) < 0 ? ~((~(x)) >> (y)) : ((x) >> (y)))
57 #endif /* (-1 == (((-1) << 2) + 2) >> 2) */
60 #define SCM_I_INUMP(x) (2 & SCM_UNPACK (x))
61 #define SCM_I_NINUMP(x) (!SCM_I_INUMP (x))
62 #define SCM_I_MAKINUM(x) \
63 (SCM_PACK ((((scm_t_signed_bits) (x)) << 2) + scm_tc2_int))
64 #define SCM_I_INUM(x) (SCM_SRS ((scm_t_signed_bits) SCM_UNPACK (x), 2))
66 /* SCM_FIXABLE is true if its long argument can be encoded in an SCM_INUM. */
67 #define SCM_POSFIXABLE(n) ((n) <= SCM_MOST_POSITIVE_FIXNUM)
68 #define SCM_NEGFIXABLE(n) ((n) >= SCM_MOST_NEGATIVE_FIXNUM)
69 #define SCM_FIXABLE(n) (SCM_POSFIXABLE (n) && SCM_NEGFIXABLE (n))
72 #define SCM_INUM0 (SCM_I_MAKINUM (0)) /* A name for 0 */
73 #define SCM_INUM1 (SCM_I_MAKINUM (1)) /* A name for 1 */
76 /* SCM_MAXEXP is the maximum double precision exponent
77 * SCM_FLTMAX is less than or scm_equal the largest single precision float
80 #if SCM_HAVE_STDC_HEADERS
84 # define copysign _copysign
85 # define finite _finite
86 # endif /* __MINGW32__ */
87 # endif /* ndef GO32 */
88 #endif /* def STDC_HEADERS */
91 # define SCM_MAXEXP DBL_MAX_10_EXP
93 # define SCM_MAXEXP 308 /* IEEE doubles */
94 #endif /* def DBL_MAX_10_EXP */
97 # define SCM_FLTMAX FLT_MAX
99 # define SCM_FLTMAX 1e+23
100 #endif /* def FLT_MAX */
103 /* SCM_INTBUFLEN is the maximum number of characters neccessary for
104 * the printed or scm_string representation of an scm_t_intmax in
105 * radix 2. The buffer passed to scm_iint2str and scm_iuint2str must
106 * be of this size, for example.
108 #define SCM_INTBUFLEN (5 + SCM_CHAR_BIT*sizeof(scm_t_intmax))
116 /* Note that scm_tc16_real and scm_tc16_complex are given tc16-codes that only
117 * differ in one bit: This way, checking if an object is an inexact number can
118 * be done quickly (using the TYP16S macro). */
120 /* Number subtype 1 to 3 (note the dependency on the predicates SCM_INEXACTP
122 #define scm_tc16_big (scm_tc7_number + 1 * 256L)
123 #define scm_tc16_real (scm_tc7_number + 2 * 256L)
124 #define scm_tc16_complex (scm_tc7_number + 3 * 256L)
125 #define scm_tc16_fraction (scm_tc7_number + 4 * 256L)
127 #define SCM_INEXACTP(x) \
128 (!SCM_IMP (x) && (0xfeff & SCM_CELL_TYPE (x)) == scm_tc16_real)
129 #define SCM_REALP(x) (SCM_HAS_TYP16 (x, scm_tc16_real))
130 #define SCM_COMPLEXP(x) (SCM_HAS_TYP16 (x, scm_tc16_complex))
132 #define SCM_REAL_VALUE(x) (((scm_t_double *) SCM2PTR (x))->real)
133 #define SCM_COMPLEX_REAL(x) (((scm_t_complex *) SCM2PTR (x))->real)
134 #define SCM_COMPLEX_IMAG(x) (((scm_t_complex *) SCM2PTR (x))->imag)
136 /* Each bignum is just an mpz_t stored in a double cell starting at word 1. */
137 #define SCM_I_BIG_MPZ(x) (*((mpz_t *) (SCM_CELL_OBJECT_LOC((x),1))))
138 #define SCM_BIGP(x) (SCM_HAS_TYP16 (x, scm_tc16_big))
140 #define SCM_NUMBERP(x) (SCM_I_INUMP(x) || SCM_NUMP(x))
141 #define SCM_NUMP(x) (SCM_HAS_TYP7 (x, scm_tc7_number))
143 #define SCM_FRACTIONP(x) (SCM_HAS_TYP16 (x, scm_tc16_fraction))
144 #define SCM_FRACTION_NUMERATOR(x) (SCM_CELL_OBJECT_1 (x))
145 #define SCM_FRACTION_DENOMINATOR(x) (SCM_CELL_OBJECT_2 (x))
149 typedef struct scm_t_double
156 typedef struct scm_t_complex
167 SCM_API SCM
scm_exact_p (SCM x
);
168 SCM_API
int scm_is_exact (SCM x
);
169 SCM_API SCM
scm_odd_p (SCM n
);
170 SCM_API SCM
scm_even_p (SCM n
);
171 SCM_API SCM
scm_finite_p (SCM x
);
172 SCM_API SCM
scm_inf_p (SCM x
);
173 SCM_API SCM
scm_nan_p (SCM x
);
174 SCM_API SCM
scm_inf (void);
175 SCM_API SCM
scm_nan (void);
176 SCM_API SCM
scm_abs (SCM x
);
177 SCM_API SCM
scm_quotient (SCM x
, SCM y
);
178 SCM_API SCM
scm_remainder (SCM x
, SCM y
);
179 SCM_API SCM
scm_modulo (SCM x
, SCM y
);
180 SCM_API
void scm_euclidean_divide (SCM x
, SCM y
, SCM
*q
, SCM
*r
);
181 SCM_API SCM
scm_euclidean_quotient (SCM x
, SCM y
);
182 SCM_API SCM
scm_euclidean_remainder (SCM x
, SCM y
);
183 SCM_API
void scm_floor_divide (SCM x
, SCM y
, SCM
*q
, SCM
*r
);
184 SCM_API SCM
scm_floor_quotient (SCM x
, SCM y
);
185 SCM_API SCM
scm_floor_remainder (SCM x
, SCM y
);
186 SCM_API
void scm_ceiling_divide (SCM x
, SCM y
, SCM
*q
, SCM
*r
);
187 SCM_API SCM
scm_ceiling_quotient (SCM x
, SCM y
);
188 SCM_API SCM
scm_ceiling_remainder (SCM x
, SCM y
);
189 SCM_API
void scm_truncate_divide (SCM x
, SCM y
, SCM
*q
, SCM
*r
);
190 SCM_API SCM
scm_truncate_quotient (SCM x
, SCM y
);
191 SCM_API SCM
scm_truncate_remainder (SCM x
, SCM y
);
192 SCM_API
void scm_centered_divide (SCM x
, SCM y
, SCM
*q
, SCM
*r
);
193 SCM_API SCM
scm_centered_quotient (SCM x
, SCM y
);
194 SCM_API SCM
scm_centered_remainder (SCM x
, SCM y
);
195 SCM_API
void scm_round_divide (SCM x
, SCM y
, SCM
*q
, SCM
*r
);
196 SCM_API SCM
scm_round_quotient (SCM x
, SCM y
);
197 SCM_API SCM
scm_round_remainder (SCM x
, SCM y
);
198 SCM_API SCM
scm_gcd (SCM x
, SCM y
);
199 SCM_API SCM
scm_lcm (SCM n1
, SCM n2
);
200 SCM_API SCM
scm_logand (SCM n1
, SCM n2
);
201 SCM_API SCM
scm_logior (SCM n1
, SCM n2
);
202 SCM_API SCM
scm_logxor (SCM n1
, SCM n2
);
203 SCM_API SCM
scm_logtest (SCM n1
, SCM n2
);
204 SCM_API SCM
scm_logbit_p (SCM n1
, SCM n2
);
205 SCM_API SCM
scm_lognot (SCM n
);
206 SCM_API SCM
scm_modulo_expt (SCM n
, SCM k
, SCM m
);
207 SCM_API SCM
scm_integer_expt (SCM z1
, SCM z2
);
208 SCM_API SCM
scm_ash (SCM n
, SCM cnt
);
209 SCM_API SCM
scm_bit_extract (SCM n
, SCM start
, SCM end
);
210 SCM_API SCM
scm_logcount (SCM n
);
211 SCM_API SCM
scm_integer_length (SCM n
);
213 SCM_INTERNAL SCM
scm_i_euclidean_divide (SCM x
, SCM y
);
214 SCM_INTERNAL SCM
scm_i_floor_divide (SCM x
, SCM y
);
215 SCM_INTERNAL SCM
scm_i_ceiling_divide (SCM x
, SCM y
);
216 SCM_INTERNAL SCM
scm_i_truncate_divide (SCM x
, SCM y
);
217 SCM_INTERNAL SCM
scm_i_centered_divide (SCM x
, SCM y
);
218 SCM_INTERNAL SCM
scm_i_round_divide (SCM x
, SCM y
);
220 SCM_INTERNAL SCM
scm_i_gcd (SCM x
, SCM y
, SCM rest
);
221 SCM_INTERNAL SCM
scm_i_lcm (SCM x
, SCM y
, SCM rest
);
222 SCM_INTERNAL SCM
scm_i_logand (SCM x
, SCM y
, SCM rest
);
223 SCM_INTERNAL SCM
scm_i_logior (SCM x
, SCM y
, SCM rest
);
224 SCM_INTERNAL SCM
scm_i_logxor (SCM x
, SCM y
, SCM rest
);
226 SCM_API
size_t scm_iint2str (scm_t_intmax num
, int rad
, char *p
);
227 SCM_API
size_t scm_iuint2str (scm_t_uintmax num
, int rad
, char *p
);
228 SCM_API SCM
scm_number_to_string (SCM x
, SCM radix
);
229 SCM_API
int scm_print_real (SCM sexp
, SCM port
, scm_print_state
*pstate
);
230 SCM_API
int scm_print_complex (SCM sexp
, SCM port
, scm_print_state
*pstate
);
231 SCM_API
int scm_bigprint (SCM exp
, SCM port
, scm_print_state
*pstate
);
232 SCM_API SCM
scm_c_locale_stringn_to_number (const char *mem
, size_t len
,
234 SCM_INTERNAL SCM
scm_i_string_to_number (SCM str
, unsigned int radix
);
235 SCM_API SCM
scm_string_to_number (SCM str
, SCM radix
);
236 SCM_API SCM
scm_bigequal (SCM x
, SCM y
);
237 SCM_API SCM
scm_real_equalp (SCM x
, SCM y
);
238 SCM_API SCM
scm_complex_equalp (SCM x
, SCM y
);
239 SCM_API SCM
scm_number_p (SCM x
);
240 SCM_API SCM
scm_complex_p (SCM x
);
241 SCM_API SCM
scm_real_p (SCM x
);
242 SCM_API SCM
scm_rational_p (SCM z
);
243 SCM_API SCM
scm_integer_p (SCM x
);
244 SCM_API SCM
scm_inexact_p (SCM x
);
245 SCM_API
int scm_is_inexact (SCM x
);
246 SCM_API SCM
scm_num_eq_p (SCM x
, SCM y
);
247 SCM_API SCM
scm_less_p (SCM x
, SCM y
);
248 SCM_API SCM
scm_gr_p (SCM x
, SCM y
);
249 SCM_API SCM
scm_leq_p (SCM x
, SCM y
);
250 SCM_API SCM
scm_geq_p (SCM x
, SCM y
);
251 SCM_API SCM
scm_zero_p (SCM z
);
252 SCM_API SCM
scm_positive_p (SCM x
);
253 SCM_API SCM
scm_negative_p (SCM x
);
254 SCM_API SCM
scm_max (SCM x
, SCM y
);
255 SCM_API SCM
scm_min (SCM x
, SCM y
);
256 SCM_API SCM
scm_sum (SCM x
, SCM y
);
257 SCM_API SCM
scm_oneplus (SCM x
);
258 SCM_API SCM
scm_difference (SCM x
, SCM y
);
259 SCM_API SCM
scm_oneminus (SCM x
);
260 SCM_API SCM
scm_product (SCM x
, SCM y
);
261 SCM_API SCM
scm_divide (SCM x
, SCM y
);
262 SCM_API SCM
scm_floor (SCM x
);
263 SCM_API SCM
scm_ceiling (SCM x
);
264 SCM_API
double scm_c_truncate (double x
);
265 SCM_API
double scm_c_round (double x
);
266 SCM_API SCM
scm_truncate_number (SCM x
);
267 SCM_API SCM
scm_round_number (SCM x
);
268 SCM_API SCM
scm_expt (SCM z1
, SCM z2
);
269 SCM_API SCM
scm_sin (SCM z
);
270 SCM_API SCM
scm_cos (SCM z
);
271 SCM_API SCM
scm_tan (SCM z
);
272 SCM_API SCM
scm_sinh (SCM z
);
273 SCM_API SCM
scm_cosh (SCM z
);
274 SCM_API SCM
scm_tanh (SCM z
);
275 SCM_API SCM
scm_asin (SCM z
);
276 SCM_API SCM
scm_acos (SCM z
);
277 SCM_API SCM
scm_atan (SCM x
, SCM y
);
278 SCM_API SCM
scm_sys_asinh (SCM z
);
279 SCM_API SCM
scm_sys_acosh (SCM z
);
280 SCM_API SCM
scm_sys_atanh (SCM z
);
281 SCM_API SCM
scm_make_rectangular (SCM z1
, SCM z2
);
282 SCM_API SCM
scm_make_polar (SCM z1
, SCM z2
);
283 SCM_API SCM
scm_real_part (SCM z
);
284 SCM_API SCM
scm_imag_part (SCM z
);
285 SCM_API SCM
scm_magnitude (SCM z
);
286 SCM_API SCM
scm_angle (SCM z
);
287 SCM_API SCM
scm_exact_to_inexact (SCM z
);
288 SCM_API SCM
scm_inexact_to_exact (SCM z
);
289 SCM_API SCM
scm_trunc (SCM x
);
290 SCM_API SCM
scm_log (SCM z
);
291 SCM_API SCM
scm_log10 (SCM z
);
292 SCM_API SCM
scm_exp (SCM z
);
293 SCM_API SCM
scm_sqrt (SCM z
);
294 SCM_API
void scm_exact_integer_sqrt (SCM k
, SCM
*s
, SCM
*r
);
296 SCM_INTERNAL SCM
scm_i_min (SCM x
, SCM y
, SCM rest
);
297 SCM_INTERNAL SCM
scm_i_max (SCM x
, SCM y
, SCM rest
);
298 SCM_INTERNAL SCM
scm_i_sum (SCM x
, SCM y
, SCM rest
);
299 SCM_INTERNAL SCM
scm_i_difference (SCM x
, SCM y
, SCM rest
);
300 SCM_INTERNAL SCM
scm_i_product (SCM x
, SCM y
, SCM rest
);
301 SCM_INTERNAL SCM
scm_i_divide (SCM x
, SCM y
, SCM rest
);
302 SCM_INTERNAL SCM
scm_i_exact_integer_sqrt (SCM k
);
304 /* bignum internal functions */
305 SCM_INTERNAL SCM
scm_i_mkbig (void);
306 SCM_API
/* FIXME: not internal */ SCM
scm_i_normbig (SCM x
);
307 SCM_INTERNAL
int scm_i_bigcmp (SCM a
, SCM b
);
308 SCM_INTERNAL SCM
scm_i_dbl2big (double d
);
309 SCM_INTERNAL SCM
scm_i_dbl2num (double d
);
310 SCM_API
/* FIXME: not internal */ double scm_i_big2dbl (SCM b
);
311 SCM_API
/* FIXME: not internal */ SCM
scm_i_long2big (long n
);
312 SCM_API
/* FIXME: not internal */ SCM
scm_i_ulong2big (unsigned long n
);
313 SCM_API
/* FIXME: not internal */ SCM
scm_i_clonebig (SCM src_big
, int same_sign_p
);
315 /* ratio functions */
316 SCM_API SCM
scm_rationalize (SCM x
, SCM err
);
317 SCM_API SCM
scm_numerator (SCM z
);
318 SCM_API SCM
scm_denominator (SCM z
);
320 /* fraction internal functions */
321 SCM_INTERNAL
double scm_i_fraction2double (SCM z
);
322 SCM_INTERNAL SCM
scm_i_fraction_equalp (SCM x
, SCM y
);
323 SCM_INTERNAL
int scm_i_print_fraction (SCM sexp
, SCM port
, scm_print_state
*pstate
);
325 /* general internal functions */
326 SCM_INTERNAL
void scm_i_print_double (double val
, SCM port
);
327 SCM_INTERNAL
void scm_i_print_complex (double real
, double imag
, SCM port
);
329 /* conversion functions for integers */
331 SCM_API
int scm_is_integer (SCM val
);
332 SCM_API
int scm_is_signed_integer (SCM val
,
333 scm_t_intmax min
, scm_t_intmax max
);
334 SCM_API
int scm_is_unsigned_integer (SCM val
,
335 scm_t_uintmax min
, scm_t_uintmax max
);
337 SCM_API SCM
scm_from_signed_integer (scm_t_intmax val
);
338 SCM_API SCM
scm_from_unsigned_integer (scm_t_uintmax val
);
340 SCM_API scm_t_intmax
scm_to_signed_integer (SCM val
,
343 SCM_API scm_t_uintmax
scm_to_unsigned_integer (SCM val
,
347 SCM_API scm_t_int8
scm_to_int8 (SCM x
);
348 SCM_API SCM
scm_from_int8 (scm_t_int8 x
);
350 SCM_API scm_t_uint8
scm_to_uint8 (SCM x
);
351 SCM_API SCM
scm_from_uint8 (scm_t_uint8 x
);
353 SCM_API scm_t_int16
scm_to_int16 (SCM x
);
354 SCM_API SCM
scm_from_int16 (scm_t_int16 x
);
356 SCM_API scm_t_uint16
scm_to_uint16 (SCM x
);
357 SCM_API SCM
scm_from_uint16 (scm_t_uint16 x
);
359 SCM_API scm_t_int32
scm_to_int32 (SCM x
);
360 SCM_API SCM
scm_from_int32 (scm_t_int32 x
);
362 SCM_API scm_t_uint32
scm_to_uint32 (SCM x
);
363 SCM_API SCM
scm_from_uint32 (scm_t_uint32 x
);
365 SCM_API scm_t_wchar
scm_to_wchar (SCM x
);
366 SCM_API SCM
scm_from_wchar (scm_t_wchar x
);
368 SCM_API scm_t_int64
scm_to_int64 (SCM x
);
369 SCM_API SCM
scm_from_int64 (scm_t_int64 x
);
371 SCM_API scm_t_uint64
scm_to_uint64 (SCM x
);
372 SCM_API SCM
scm_from_uint64 (scm_t_uint64 x
);
374 SCM_API
void scm_to_mpz (SCM x
, mpz_t rop
);
375 SCM_API SCM
scm_from_mpz (mpz_t rop
);
378 /* The conversion functions for other types are aliased to the
379 appropriate ones from above. We pick the right one based on the
382 Not each and every possibility is covered by the code below, and
383 while it is trivial to complete the tests, it might be better to
384 just test for the 'sane' possibilities. When one of the tests
385 below fails, chances are good that some silent assumption somewhere
389 #if SCM_SIZEOF_CHAR == 1
390 #define scm_to_schar scm_to_int8
391 #define scm_from_schar scm_from_int8
392 #define scm_to_uchar scm_to_uint8
393 #define scm_from_uchar scm_from_uint8
395 #define scm_to_char scm_to_uint8
396 #define scm_from_char scm_from_uint8
398 #define scm_to_char scm_to_int8
399 #define scm_from_char scm_from_int8
402 #error sizeof(char) is not 1.
405 #if SCM_SIZEOF_SHORT == 1
406 #define scm_to_short scm_to_int8
407 #define scm_from_short scm_from_int8
408 #define scm_to_ushort scm_to_uint8
409 #define scm_from_ushort scm_from_uint8
411 #if SCM_SIZEOF_SHORT == 2
412 #define scm_to_short scm_to_int16
413 #define scm_from_short scm_from_int16
414 #define scm_to_ushort scm_to_uint16
415 #define scm_from_ushort scm_from_uint16
417 #if SCM_SIZEOF_SHORT == 4
418 #define scm_to_short scm_to_int32
419 #define scm_from_short scm_from_int32
420 #define scm_to_ushort scm_to_uint32
421 #define scm_from_ushort scm_from_uint32
423 #error sizeof(short) is not 1, 2, or 4.
428 #if SCM_SIZEOF_INT == 4
429 #define scm_to_int scm_to_int32
430 #define scm_from_int scm_from_int32
431 #define scm_to_uint scm_to_uint32
432 #define scm_from_uint scm_from_uint32
434 #if SCM_SIZEOF_INT == 8
435 #define scm_to_int scm_to_int64
436 #define scm_from_int scm_from_int64
437 #define scm_to_uint scm_to_uint64
438 #define scm_from_uint scm_from_uint64
440 #error sizeof(int) is not 4 or 8.
444 #if SCM_SIZEOF_LONG == 4
445 #define scm_to_long scm_to_int32
446 #define scm_from_long scm_from_int32
447 #define scm_to_ulong scm_to_uint32
448 #define scm_from_ulong scm_from_uint32
450 #if SCM_SIZEOF_LONG == 8
451 #define scm_to_long scm_to_int64
452 #define scm_from_long scm_from_int64
453 #define scm_to_ulong scm_to_uint64
454 #define scm_from_ulong scm_from_uint64
456 #error sizeof(long) is not 4 or 8.
460 #if SCM_SIZEOF_INTMAX == 4
461 #define scm_to_intmax scm_to_int32
462 #define scm_from_intmax scm_from_int32
463 #define scm_to_uintmax scm_to_uint32
464 #define scm_from_uintmax scm_from_uint32
466 #if SCM_SIZEOF_INTMAX == 8
467 #define scm_to_intmax scm_to_int64
468 #define scm_from_intmax scm_from_int64
469 #define scm_to_uintmax scm_to_uint64
470 #define scm_from_uintmax scm_from_uint64
472 #error sizeof(scm_t_intmax) is not 4 or 8.
476 #if SCM_SIZEOF_LONG_LONG == 0
478 #if SCM_SIZEOF_LONG_LONG == 8
479 #define scm_to_long_long scm_to_int64
480 #define scm_from_long_long scm_from_int64
481 #define scm_to_ulong_long scm_to_uint64
482 #define scm_from_ulong_long scm_from_uint64
484 #error sizeof(long long) is not 8.
488 #if SCM_SIZEOF_SIZE_T == 4
489 #define scm_to_ssize_t scm_to_int32
490 #define scm_from_ssize_t scm_from_int32
491 #define scm_to_size_t scm_to_uint32
492 #define scm_from_size_t scm_from_uint32
494 #if SCM_SIZEOF_SIZE_T == 8
495 #define scm_to_ssize_t scm_to_int64
496 #define scm_from_ssize_t scm_from_int64
497 #define scm_to_size_t scm_to_uint64
498 #define scm_from_size_t scm_from_uint64
500 #error sizeof(size_t) is not 4 or 8.
504 #if SCM_SIZEOF_SCM_T_PTRDIFF == 4
505 #define scm_to_ptrdiff_t scm_to_int32
506 #define scm_from_ptrdiff_t scm_from_int32
508 #if SCM_SIZEOF_SCM_T_PTRDIFF == 8
509 #define scm_to_ptrdiff_t scm_to_int64
510 #define scm_from_ptrdiff_t scm_from_int64
512 #error sizeof(scm_t_ptrdiff) is not 4 or 8.
516 /* conversion functions for double */
518 SCM_API
int scm_is_real (SCM val
);
519 SCM_API
int scm_is_rational (SCM val
);
520 SCM_API
double scm_to_double (SCM val
);
521 SCM_API SCM
scm_from_double (double val
);
523 /* conversion functions for complex */
525 SCM_API
int scm_is_complex (SCM val
);
526 SCM_API SCM
scm_c_make_rectangular (double re
, double im
);
527 SCM_API SCM
scm_c_make_polar (double mag
, double ang
);
528 SCM_API
double scm_c_real_part (SCM z
);
529 SCM_API
double scm_c_imag_part (SCM z
);
530 SCM_API
double scm_c_magnitude (SCM z
);
531 SCM_API
double scm_c_angle (SCM z
);
533 SCM_API
int scm_is_number (SCM val
);
535 /* If nonzero, tell gmp to use GC_malloc for its allocations. */
536 SCM_API
int scm_install_gmp_memory_functions
;
538 SCM_INTERNAL
void scm_init_numbers (void);
540 #endif /* SCM_NUMBERS_H */