1 /* Copyright (C) 1996, 1998, 2000, 2001, 2004, 2005, 2006, 2008, 2009,
2 * 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public License
6 * as published by the Free Software Foundation; either version 3 of
7 * the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
29 #include "libguile/_scm.h"
30 #include "libguile/strings.h"
31 #include "libguile/arrays.h"
32 #include "libguile/smob.h"
33 #include "libguile/chars.h"
34 #include "libguile/eq.h"
35 #include "libguile/eval.h"
36 #include "libguile/feature.h"
37 #include "libguile/root.h"
38 #include "libguile/vectors.h"
39 #include "libguile/bitvectors.h"
40 #include "libguile/srfi-4.h"
41 #include "libguile/generalized-arrays.h"
43 #include "libguile/validate.h"
44 #include "libguile/array-map.h"
47 /* The WHAT argument for `scm_gc_malloc ()' et al. */
48 static const char indices_gc_hint
[] = "array-indices";
51 AREF (SCM v
, size_t pos
)
53 return scm_c_array_ref_1 (v
, pos
);
57 ASET (SCM v
, size_t pos
, SCM val
)
59 scm_c_array_set_1_x (v
, val
, pos
);
63 cind (SCM ra
, long *ve
)
67 if (!SCM_I_ARRAYP (ra
))
69 i
= SCM_I_ARRAY_BASE (ra
);
70 for (k
= 0; k
< SCM_I_ARRAY_NDIM (ra
); k
++)
71 i
+= (ve
[k
] - SCM_I_ARRAY_DIMS (ra
)[k
].lbnd
) * SCM_I_ARRAY_DIMS (ra
)[k
].inc
;
76 /* Checker for scm_array mapping functions:
77 return values: 4 --> shapes, increments, and bases are the same;
78 3 --> shapes and increments are the same;
79 2 --> shapes are the same;
80 1 --> ras are at least as big as ra0;
85 scm_ra_matchp (SCM ra0
, SCM ras
)
89 scm_t_array_dim
*s0
= &dims
;
91 unsigned long bas0
= 0;
93 int exact
= 2 /* 4 */ ; /* Don't care about values >2 (yet?) */
95 if (SCM_I_ARRAYP (ra0
))
97 ndim
= SCM_I_ARRAY_NDIM (ra0
);
98 s0
= SCM_I_ARRAY_DIMS (ra0
);
99 bas0
= SCM_I_ARRAY_BASE (ra0
);
101 else if (scm_is_array (ra0
))
105 s0
->ubnd
= scm_c_array_length (ra0
) - 1;
110 while (scm_is_pair (ras
))
114 if (!SCM_I_ARRAYP (ra1
))
121 length
= scm_c_array_length (ra1
);
132 if ((0 == s0
->lbnd
) && (s0
->ubnd
== length
- 1))
136 if (s0
->lbnd
< 0 || s0
->ubnd
>= length
)
140 else if (ndim
== SCM_I_ARRAY_NDIM (ra1
))
142 s1
= SCM_I_ARRAY_DIMS (ra1
);
143 if (bas0
!= SCM_I_ARRAY_BASE (ra1
))
145 for (i
= 0; i
< ndim
; i
++)
150 if (s0
[i
].inc
!= s1
[i
].inc
)
153 if (s0
[i
].lbnd
== s1
[i
].lbnd
&& s0
[i
].ubnd
== s1
[i
].ubnd
)
157 if (s0
[i
].lbnd
< s1
[i
].lbnd
|| s0
[i
].ubnd
> s1
[i
].ubnd
)
158 return (s0
[i
].lbnd
<= s0
[i
].ubnd
? 0 : 1);
170 /* array mapper: apply cproc to each dimension of the given arrays?.
171 int (*cproc) (); procedure to call on unrolled arrays?
172 cproc (dest, source list) or
173 cproc (dest, data, source list).
174 SCM data; data to give to cproc or unbound.
175 SCM ra0; destination array.
176 SCM lra; list of source arrays.
177 const char *what; caller, for error reporting. */
179 scm_ramapc (void *cproc_ptr
, SCM data
, SCM ra0
, SCM lra
, const char *what
)
186 int (*cproc
) () = cproc_ptr
;
188 switch (scm_ra_matchp (ra0
, lra
))
192 scm_misc_error (what
, "array shape mismatch: ~S", scm_list_1 (ra0
));
195 case 4: /* Try unrolling arrays */
196 kmax
= (SCM_I_ARRAYP (ra0
) ? SCM_I_ARRAY_NDIM (ra0
) - 1 : 0);
199 vra0
= scm_array_contents (ra0
, SCM_UNDEFINED
);
200 if (SCM_IMP (vra0
)) goto gencase
;
201 if (!SCM_I_ARRAYP (vra0
))
203 size_t length
= scm_c_array_length (vra0
);
204 vra1
= scm_i_make_array (1);
205 SCM_I_ARRAY_BASE (vra1
) = 0;
206 SCM_I_ARRAY_DIMS (vra1
)->lbnd
= 0;
207 SCM_I_ARRAY_DIMS (vra1
)->ubnd
= length
- 1;
208 SCM_I_ARRAY_DIMS (vra1
)->inc
= 1;
209 SCM_I_ARRAY_V (vra1
) = vra0
;
214 for (z
= lra
; scm_is_pair (z
); z
= SCM_CDR (z
))
217 vra1
= scm_i_make_array (1);
218 SCM_I_ARRAY_DIMS (vra1
)->lbnd
= SCM_I_ARRAY_DIMS (vra0
)->lbnd
;
219 SCM_I_ARRAY_DIMS (vra1
)->ubnd
= SCM_I_ARRAY_DIMS (vra0
)->ubnd
;
220 if (!SCM_I_ARRAYP (ra1
))
222 SCM_I_ARRAY_BASE (vra1
) = 0;
223 SCM_I_ARRAY_DIMS (vra1
)->inc
= 1;
224 SCM_I_ARRAY_V (vra1
) = ra1
;
226 else if (!SCM_I_ARRAY_CONTP (ra1
))
230 SCM_I_ARRAY_BASE (vra1
) = SCM_I_ARRAY_BASE (ra1
);
231 SCM_I_ARRAY_DIMS (vra1
)->inc
= SCM_I_ARRAY_DIMS (ra1
)[kmax
].inc
;
232 SCM_I_ARRAY_V (vra1
) = SCM_I_ARRAY_V (ra1
);
234 *plvra
= scm_cons (vra1
, SCM_EOL
);
235 plvra
= SCM_CDRLOC (*plvra
);
237 return (SCM_UNBNDP (data
) ? cproc(vra0
, lvra
) : cproc(vra0
, data
, lvra
));
239 gencase
: /* Have to loop over all dimensions. */
240 vra0
= scm_i_make_array (1);
241 if (SCM_I_ARRAYP (ra0
))
243 kmax
= SCM_I_ARRAY_NDIM (ra0
) - 1;
246 SCM_I_ARRAY_DIMS (vra0
)->lbnd
= 0;
247 SCM_I_ARRAY_DIMS (vra0
)->ubnd
= 0;
248 SCM_I_ARRAY_DIMS (vra0
)->inc
= 1;
252 SCM_I_ARRAY_DIMS (vra0
)->lbnd
= SCM_I_ARRAY_DIMS (ra0
)[kmax
].lbnd
;
253 SCM_I_ARRAY_DIMS (vra0
)->ubnd
= SCM_I_ARRAY_DIMS (ra0
)[kmax
].ubnd
;
254 SCM_I_ARRAY_DIMS (vra0
)->inc
= SCM_I_ARRAY_DIMS (ra0
)[kmax
].inc
;
256 SCM_I_ARRAY_BASE (vra0
) = SCM_I_ARRAY_BASE (ra0
);
257 SCM_I_ARRAY_V (vra0
) = SCM_I_ARRAY_V (ra0
);
261 size_t length
= scm_c_array_length (ra0
);
263 SCM_I_ARRAY_DIMS (vra0
)->lbnd
= 0;
264 SCM_I_ARRAY_DIMS (vra0
)->ubnd
= length
- 1;
265 SCM_I_ARRAY_DIMS (vra0
)->inc
= 1;
266 SCM_I_ARRAY_BASE (vra0
) = 0;
267 SCM_I_ARRAY_V (vra0
) = ra0
;
272 for (z
= lra
; scm_is_pair (z
); z
= SCM_CDR (z
))
275 vra1
= scm_i_make_array (1);
276 SCM_I_ARRAY_DIMS (vra1
)->lbnd
= SCM_I_ARRAY_DIMS (vra0
)->lbnd
;
277 SCM_I_ARRAY_DIMS (vra1
)->ubnd
= SCM_I_ARRAY_DIMS (vra0
)->ubnd
;
278 if (SCM_I_ARRAYP (ra1
))
281 SCM_I_ARRAY_DIMS (vra1
)->inc
= SCM_I_ARRAY_DIMS (ra1
)[kmax
].inc
;
282 SCM_I_ARRAY_V (vra1
) = SCM_I_ARRAY_V (ra1
);
286 SCM_I_ARRAY_DIMS (vra1
)->inc
= 1;
287 SCM_I_ARRAY_V (vra1
) = ra1
;
289 *plvra
= scm_cons (vra1
, SCM_EOL
);
290 plvra
= SCM_CDRLOC (*plvra
);
293 vinds
= scm_gc_malloc_pointerless (sizeof(long) * SCM_I_ARRAY_NDIM (ra0
),
296 for (k
= 0; k
<= kmax
; k
++)
297 vinds
[k
] = SCM_I_ARRAY_DIMS (ra0
)[k
].lbnd
;
304 SCM_I_ARRAY_BASE (vra0
) = cind (ra0
, vinds
);
305 for (z
= lvra
; scm_is_pair (z
); z
= SCM_CDR (z
), y
= SCM_CDR (y
))
306 SCM_I_ARRAY_BASE (SCM_CAR (z
)) = cind (SCM_CAR (y
), vinds
);
307 if (0 == (SCM_UNBNDP (data
) ? cproc(vra0
, lvra
) : cproc(vra0
, data
, lvra
)))
312 if (vinds
[k
] < SCM_I_ARRAY_DIMS (ra0
)[k
].ubnd
)
318 vinds
[k
] = SCM_I_ARRAY_DIMS (ra0
)[k
].lbnd
- 1;
328 rafill (SCM dst
, SCM fill
)
330 long n
= (SCM_I_ARRAY_DIMS (dst
)->ubnd
- SCM_I_ARRAY_DIMS (dst
)->lbnd
+ 1);
331 scm_t_array_handle h
;
334 scm_array_get_handle (SCM_I_ARRAY_V (dst
), &h
);
335 i
= SCM_I_ARRAY_BASE (dst
);
336 inc
= SCM_I_ARRAY_DIMS (dst
)->inc
;
338 for (; n
-- > 0; i
+= inc
)
339 h
.impl
->vset (&h
, i
, fill
);
341 scm_array_handle_release (&h
);
345 SCM_DEFINE (scm_array_fill_x
, "array-fill!", 2, 0, 0,
347 "Store @var{fill} in every element of array @var{ra}. The value\n"
348 "returned is unspecified.")
349 #define FUNC_NAME s_scm_array_fill_x
351 scm_ramapc (rafill
, fill
, ra
, SCM_EOL
, FUNC_NAME
);
352 return SCM_UNSPECIFIED
;
358 racp (SCM src
, SCM dst
)
360 long n
= (SCM_I_ARRAY_DIMS (src
)->ubnd
- SCM_I_ARRAY_DIMS (src
)->lbnd
+ 1);
361 scm_t_array_handle h_s
, h_d
;
363 ssize_t inc_s
, inc_d
;
366 scm_array_get_handle (SCM_I_ARRAY_V (src
), &h_s
);
367 scm_array_get_handle (SCM_I_ARRAY_V (dst
), &h_d
);
369 i_s
= SCM_I_ARRAY_BASE (src
);
370 i_d
= SCM_I_ARRAY_BASE (dst
);
371 inc_s
= SCM_I_ARRAY_DIMS (src
)->inc
;
372 inc_d
= SCM_I_ARRAY_DIMS (dst
)->inc
;
374 for (; n
-- > 0; i_s
+= inc_s
, i_d
+= inc_d
)
375 h_d
.impl
->vset (&h_d
, i_d
, h_s
.impl
->vref (&h_s
, i_s
));
377 scm_array_handle_release (&h_d
);
378 scm_array_handle_release (&h_s
);
383 SCM_REGISTER_PROC(s_array_copy_in_order_x
, "array-copy-in-order!", 2, 0, 0, scm_array_copy_x
);
386 SCM_DEFINE (scm_array_copy_x
, "array-copy!", 2, 0, 0,
388 "@deffnx {Scheme Procedure} array-copy-in-order! src dst\n"
389 "Copy every element from vector or array @var{src} to the\n"
390 "corresponding element of @var{dst}. @var{dst} must have the\n"
391 "same rank as @var{src}, and be at least as large in each\n"
392 "dimension. The order is unspecified.")
393 #define FUNC_NAME s_scm_array_copy_x
395 scm_ramapc (racp
, SCM_UNDEFINED
, src
, scm_cons (dst
, SCM_EOL
), FUNC_NAME
);
396 return SCM_UNSPECIFIED
;
401 #if SCM_ENABLE_DEPRECATED == 1
403 /* to be used as cproc in scm_ramapc to fill an array dimension with
406 scm_array_fill_int (SCM ra
, SCM fill
, SCM ignore SCM_UNUSED
)
409 unsigned long n
= SCM_I_ARRAY_DIMS (ra
)->ubnd
- SCM_I_ARRAY_DIMS (ra
)->lbnd
+ 1;
410 long inc
= SCM_I_ARRAY_DIMS (ra
)->inc
;
411 unsigned long base
= SCM_I_ARRAY_BASE (ra
);
413 ra
= SCM_I_ARRAY_V (ra
);
415 for (i
= base
; n
--; i
+= inc
)
421 /* Functions callable by ARRAY-MAP! */
424 scm_ra_eqp (SCM ra0
, SCM ras
)
426 SCM ra1
= SCM_CAR (ras
), ra2
= SCM_CAR (SCM_CDR (ras
));
427 scm_t_array_handle ra0_handle
;
428 scm_t_array_dim
*ra0_dims
;
432 unsigned long i1
= SCM_I_ARRAY_BASE (ra1
), i2
= SCM_I_ARRAY_BASE (ra2
);
433 long inc1
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
434 long inc2
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
435 ra1
= SCM_I_ARRAY_V (ra1
);
436 ra2
= SCM_I_ARRAY_V (ra2
);
438 scm_array_get_handle (ra0
, &ra0_handle
);
439 ra0_dims
= scm_array_handle_dims (&ra0_handle
);
440 n
= ra0_dims
[0].ubnd
- ra0_dims
[0].lbnd
+ 1;
441 inc0
= ra0_dims
[0].inc
;
444 for (; n
-- > 0; i0
+= inc0
, i1
+= inc1
, i2
+= inc2
)
445 if (scm_is_true (scm_array_handle_ref (&ra0_handle
, i0
)))
446 if (!scm_is_eq (AREF (ra1
, i1
), AREF (ra2
, i2
)))
447 scm_array_handle_set (&ra0_handle
, i0
, SCM_BOOL_F
);
450 scm_array_handle_release (&ra0_handle
);
454 /* opt 0 means <, nonzero means >= */
457 ra_compare (SCM ra0
, SCM ra1
, SCM ra2
, int opt
)
459 scm_t_array_handle ra0_handle
;
460 scm_t_array_dim
*ra0_dims
;
464 unsigned long i1
= SCM_I_ARRAY_BASE (ra1
), i2
= SCM_I_ARRAY_BASE (ra2
);
465 long inc1
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
466 long inc2
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
467 ra1
= SCM_I_ARRAY_V (ra1
);
468 ra2
= SCM_I_ARRAY_V (ra2
);
470 scm_array_get_handle (ra0
, &ra0_handle
);
471 ra0_dims
= scm_array_handle_dims (&ra0_handle
);
472 n
= ra0_dims
[0].ubnd
- ra0_dims
[0].lbnd
+ 1;
473 inc0
= ra0_dims
[0].inc
;
476 for (; n
-- > 0; i0
+= inc0
, i1
+= inc1
, i2
+= inc2
)
477 if (scm_is_true (scm_array_handle_ref (&ra0_handle
, i0
)))
479 scm_is_true (scm_less_p (AREF (ra1
, i1
), AREF (ra2
, i2
))) :
480 scm_is_false (scm_less_p (AREF (ra1
, i1
), AREF (ra2
, i2
))))
481 scm_array_handle_set (&ra0_handle
, i0
, SCM_BOOL_F
);
484 scm_array_handle_release (&ra0_handle
);
491 scm_ra_lessp (SCM ra0
, SCM ras
)
493 return ra_compare (ra0
, SCM_CAR (ras
), SCM_CAR (SCM_CDR (ras
)), 0);
498 scm_ra_leqp (SCM ra0
, SCM ras
)
500 return ra_compare (ra0
, SCM_CAR (SCM_CDR (ras
)), SCM_CAR (ras
), 1);
505 scm_ra_grp (SCM ra0
, SCM ras
)
507 return ra_compare (ra0
, SCM_CAR (SCM_CDR (ras
)), SCM_CAR (ras
), 0);
512 scm_ra_greqp (SCM ra0
, SCM ras
)
514 return ra_compare (ra0
, SCM_CAR (ras
), SCM_CAR (SCM_CDR (ras
)), 1);
519 scm_ra_sum (SCM ra0
, SCM ras
)
521 long n
= SCM_I_ARRAY_DIMS (ra0
)->ubnd
- SCM_I_ARRAY_DIMS (ra0
)->lbnd
+ 1;
522 unsigned long i0
= SCM_I_ARRAY_BASE (ra0
);
523 long inc0
= SCM_I_ARRAY_DIMS (ra0
)->inc
;
524 ra0
= SCM_I_ARRAY_V (ra0
);
525 if (!scm_is_null(ras
))
527 SCM ra1
= SCM_CAR (ras
);
528 unsigned long i1
= SCM_I_ARRAY_BASE (ra1
);
529 long inc1
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
530 ra1
= SCM_I_ARRAY_V (ra1
);
531 switch (SCM_TYP7 (ra0
) == SCM_TYP7 (ra1
) ? SCM_TYP7 (ra0
) : 0)
535 for (; n
-- > 0; i0
+= inc0
, i1
+= inc1
)
536 ASET (ra0
, i0
, scm_sum (AREF(ra0
, i0
), AREF(ra1
, i1
)));
547 scm_ra_difference (SCM ra0
, SCM ras
)
549 long n
= SCM_I_ARRAY_DIMS (ra0
)->ubnd
- SCM_I_ARRAY_DIMS (ra0
)->lbnd
+ 1;
550 unsigned long i0
= SCM_I_ARRAY_BASE (ra0
);
551 long inc0
= SCM_I_ARRAY_DIMS (ra0
)->inc
;
552 ra0
= SCM_I_ARRAY_V (ra0
);
553 if (scm_is_null (ras
))
555 switch (SCM_TYP7 (ra0
))
559 for (; n
-- > 0; i0
+= inc0
)
560 ASET (ra0
, i0
, scm_difference (AREF(ra0
, i0
), SCM_UNDEFINED
));
567 SCM ra1
= SCM_CAR (ras
);
568 unsigned long i1
= SCM_I_ARRAY_BASE (ra1
);
569 long inc1
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
570 ra1
= SCM_I_ARRAY_V (ra1
);
571 switch (SCM_TYP7 (ra0
) == SCM_TYP7 (ra1
) ? SCM_TYP7 (ra0
) : 0)
575 for (; n
-- > 0; i0
+= inc0
, i1
+= inc1
)
576 ASET (ra0
, i0
, scm_difference (AREF (ra0
, i0
), AREF (ra1
, i1
)));
587 scm_ra_product (SCM ra0
, SCM ras
)
589 long n
= SCM_I_ARRAY_DIMS (ra0
)->ubnd
- SCM_I_ARRAY_DIMS (ra0
)->lbnd
+ 1;
590 unsigned long i0
= SCM_I_ARRAY_BASE (ra0
);
591 long inc0
= SCM_I_ARRAY_DIMS (ra0
)->inc
;
592 ra0
= SCM_I_ARRAY_V (ra0
);
593 if (!scm_is_null (ras
))
595 SCM ra1
= SCM_CAR (ras
);
596 unsigned long i1
= SCM_I_ARRAY_BASE (ra1
);
597 long inc1
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
598 ra1
= SCM_I_ARRAY_V (ra1
);
599 switch (SCM_TYP7 (ra0
) == SCM_TYP7 (ra1
) ? SCM_TYP7 (ra0
) : 0)
603 for (; n
-- > 0; i0
+= inc0
, i1
+= inc1
)
604 ASET (ra0
, i0
, scm_product (AREF (ra0
, i0
), AREF (ra1
, i1
)));
613 scm_ra_divide (SCM ra0
, SCM ras
)
615 long n
= SCM_I_ARRAY_DIMS (ra0
)->ubnd
- SCM_I_ARRAY_DIMS (ra0
)->lbnd
+ 1;
616 unsigned long i0
= SCM_I_ARRAY_BASE (ra0
);
617 long inc0
= SCM_I_ARRAY_DIMS (ra0
)->inc
;
618 ra0
= SCM_I_ARRAY_V (ra0
);
619 if (scm_is_null (ras
))
621 switch (SCM_TYP7 (ra0
))
625 for (; n
-- > 0; i0
+= inc0
)
626 ASET (ra0
, i0
, scm_divide (AREF (ra0
, i0
), SCM_UNDEFINED
));
633 SCM ra1
= SCM_CAR (ras
);
634 unsigned long i1
= SCM_I_ARRAY_BASE (ra1
);
635 long inc1
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
636 ra1
= SCM_I_ARRAY_V (ra1
);
637 switch (SCM_TYP7 (ra0
) == SCM_TYP7 (ra1
) ? SCM_TYP7 (ra0
) : 0)
641 for (; n
-- > 0; i0
+= inc0
, i1
+= inc1
)
643 SCM res
= scm_divide (AREF (ra0
, i0
), AREF (ra1
, i1
));
655 scm_array_identity (SCM dst
, SCM src
)
657 return racp (SCM_CAR (src
), scm_cons (dst
, SCM_EOL
));
660 #endif /* SCM_ENABLE_DEPRECATED */
663 ramap (SCM ra0
, SCM proc
, SCM ras
)
665 ssize_t i
= SCM_I_ARRAY_DIMS (ra0
)->lbnd
;
666 size_t n
= SCM_I_ARRAY_DIMS (ra0
)->ubnd
- i
+ 1;
668 scm_t_array_handle h0
;
671 scm_array_get_handle (SCM_I_ARRAY_V (ra0
), &h0
);
672 i0
= SCM_I_ARRAY_BASE (ra0
);
673 inc0
= SCM_I_ARRAY_DIMS (ra0
)->inc
;
675 if (scm_is_null (ras
))
676 for (; i0
< i0end
; i0
+= inc0
)
677 h0
.impl
->vset (&h0
, i0
, scm_call_0 (proc
));
680 SCM ra1
= SCM_CAR (ras
);
681 scm_t_array_handle h1
;
684 scm_array_get_handle (SCM_I_ARRAY_V (ra1
), &h1
);
685 i1
= SCM_I_ARRAY_BASE (ra1
);
686 inc1
= SCM_I_ARRAY_DIMS (ra1
)->inc
;
688 if (scm_is_null (ras
))
689 for (; i0
< i0end
; i0
+= inc0
, i1
+= inc1
)
690 h0
.impl
->vset (&h0
, i0
, scm_call_1 (proc
, h1
.impl
->vref (&h1
, i1
)));
693 ras
= scm_vector (ras
);
694 for (; i0
< i0end
; i0
+= inc0
, i1
+= inc1
, ++i
)
698 for (k
= scm_c_vector_length (ras
); k
--;)
699 args
= scm_cons (AREF (scm_c_vector_ref (ras
, k
), i
), args
);
700 h0
.impl
->vset (&h0
, i0
, scm_apply_1 (proc
, h1
.impl
->vref (&h1
, i1
), args
));
703 scm_array_handle_release (&h1
);
705 scm_array_handle_release (&h0
);
710 SCM_REGISTER_PROC(s_array_map_in_order_x
, "array-map-in-order!", 2, 0, 1, scm_array_map_x
);
712 SCM_SYMBOL (sym_b
, "b");
714 SCM_DEFINE (scm_array_map_x
, "array-map!", 2, 0, 1,
715 (SCM ra0
, SCM proc
, SCM lra
),
716 "@deffnx {Scheme Procedure} array-map-in-order! ra0 proc . lra\n"
717 "@var{array1}, @dots{} must have the same number of dimensions\n"
718 "as @var{ra0} and have a range for each index which includes the\n"
719 "range for the corresponding index in @var{ra0}. @var{proc} is\n"
720 "applied to each tuple of elements of @var{array1}, @dots{} and\n"
721 "the result is stored as the corresponding element in @var{ra0}.\n"
722 "The value returned is unspecified. The order of application is\n"
724 #define FUNC_NAME s_scm_array_map_x
726 SCM_VALIDATE_PROC (2, proc
);
727 SCM_VALIDATE_REST_ARGUMENT (lra
);
729 scm_ramapc (ramap
, proc
, ra0
, lra
, FUNC_NAME
);
730 return SCM_UNSPECIFIED
;
736 rafe (SCM ra0
, SCM proc
, SCM ras
)
738 ssize_t i
= SCM_I_ARRAY_DIMS (ra0
)->lbnd
;
739 size_t n
= SCM_I_ARRAY_DIMS (ra0
)->ubnd
- i
+ 1;
741 scm_t_array_handle h0
;
744 scm_array_get_handle (SCM_I_ARRAY_V (ra0
), &h0
);
745 i0
= SCM_I_ARRAY_BASE (ra0
);
746 inc0
= SCM_I_ARRAY_DIMS (ra0
)->inc
;
748 if (scm_is_null (ras
))
749 for (; i0
< i0end
; i0
+= inc0
)
750 scm_call_1 (proc
, h0
.impl
->vref (&h0
, i0
));
753 ras
= scm_vector (ras
);
754 for (; i0
< i0end
; i0
+= inc0
, ++i
)
758 for (k
= scm_c_vector_length (ras
); k
--;)
759 args
= scm_cons (AREF (scm_c_vector_ref (ras
, k
), i
), args
);
760 scm_apply_1 (proc
, h0
.impl
->vref (&h0
, i0
), args
);
763 scm_array_handle_release (&h0
);
767 SCM_DEFINE (scm_array_for_each
, "array-for-each", 2, 0, 1,
768 (SCM proc
, SCM ra0
, SCM lra
),
769 "Apply @var{proc} to each tuple of elements of @var{ra0} @dots{}\n"
770 "in row-major order. The value returned is unspecified.")
771 #define FUNC_NAME s_scm_array_for_each
773 SCM_VALIDATE_PROC (1, proc
);
774 SCM_VALIDATE_REST_ARGUMENT (lra
);
775 scm_ramapc (rafe
, proc
, ra0
, lra
, FUNC_NAME
);
776 return SCM_UNSPECIFIED
;
781 array_index_map_1 (SCM ra
, SCM proc
)
783 scm_t_array_handle h
;
787 scm_array_get_handle (ra
, &h
);
790 for (i
= h
.dims
[0].lbnd
, p
= h
.base
; i
<= h
.dims
[0].ubnd
; ++i
, p
+= inc
)
791 h
.impl
->vset (&h
, p
, scm_call_1 (proc
, scm_from_ulong (i
)));
792 scm_array_handle_release (&h
);
795 /* Here we assume that the array is a scm_tc7_array, as that is the only
796 kind of array in Guile that supports rank > 1. */
798 array_index_map_n (SCM ra
, SCM proc
)
802 int j
, k
, kmax
= SCM_I_ARRAY_NDIM (ra
) - 1;
805 vinds
= scm_gc_malloc_pointerless (sizeof(long) * SCM_I_ARRAY_NDIM (ra
),
808 for (k
= 0; k
<= kmax
; k
++)
809 vinds
[k
] = SCM_I_ARRAY_DIMS (ra
)[k
].lbnd
;
815 vinds
[k
] = SCM_I_ARRAY_DIMS (ra
)[k
].lbnd
;
816 i
= cind (ra
, vinds
);
817 for (; vinds
[k
] <= SCM_I_ARRAY_DIMS (ra
)[k
].ubnd
; vinds
[k
]++)
819 for (j
= kmax
+ 1, args
= SCM_EOL
; j
--;)
820 args
= scm_cons (scm_from_long (vinds
[j
]), args
);
821 ASET (SCM_I_ARRAY_V (ra
), i
, scm_apply_0 (proc
, args
));
822 i
+= SCM_I_ARRAY_DIMS (ra
)[k
].inc
;
827 if (vinds
[k
] < SCM_I_ARRAY_DIMS (ra
)[k
].ubnd
)
833 vinds
[k
] = SCM_I_ARRAY_DIMS (ra
)[k
].lbnd
- 1;
839 SCM_DEFINE (scm_array_index_map_x
, "array-index-map!", 2, 0, 0,
841 "Apply @var{proc} to the indices of each element of @var{ra} in\n"
842 "turn, storing the result in the corresponding element. The value\n"
843 "returned and the order of application are unspecified.\n\n"
844 "One can implement @var{array-indexes} as\n"
846 "(define (array-indexes array)\n"
847 " (let ((ra (apply make-array #f (array-shape array))))\n"
848 " (array-index-map! ra (lambda x x))\n"
853 "(define (apl:index-generator n)\n"
854 " (let ((v (make-uniform-vector n 1)))\n"
855 " (array-index-map! v (lambda (i) i))\n"
858 #define FUNC_NAME s_scm_array_index_map_x
860 SCM_VALIDATE_PROC (2, proc
);
862 switch (scm_c_array_rank (ra
))
865 scm_array_set_x (ra
, scm_call_0 (proc
), SCM_EOL
);
868 array_index_map_1 (ra
, proc
);
871 array_index_map_n (ra
, proc
);
875 return SCM_UNSPECIFIED
;
881 array_compare (scm_t_array_handle
*hx
, scm_t_array_handle
*hy
,
882 size_t dim
, unsigned long posx
, unsigned long posy
)
884 if (dim
== scm_array_handle_rank (hx
))
885 return scm_is_true (scm_equal_p (scm_array_handle_ref (hx
, posx
),
886 scm_array_handle_ref (hy
, posy
)));
892 if (hx
->dims
[dim
].lbnd
!= hy
->dims
[dim
].lbnd
893 || hx
->dims
[dim
].ubnd
!= hy
->dims
[dim
].ubnd
)
896 i
= hx
->dims
[dim
].ubnd
- hx
->dims
[dim
].lbnd
+ 1;
898 incx
= hx
->dims
[dim
].inc
;
899 incy
= hy
->dims
[dim
].inc
;
900 posx
+= (i
- 1) * incx
;
901 posy
+= (i
- 1) * incy
;
903 for (; i
> 0; i
--, posx
-= incx
, posy
-= incy
)
904 if (!array_compare (hx
, hy
, dim
+ 1, posx
, posy
))
911 scm_array_equal_p (SCM x
, SCM y
)
913 scm_t_array_handle hx
, hy
;
916 scm_array_get_handle (x
, &hx
);
917 scm_array_get_handle (y
, &hy
);
919 res
= scm_from_bool (hx
.ndims
== hy
.ndims
920 && hx
.element_type
== hy
.element_type
);
922 if (scm_is_true (res
))
923 res
= scm_from_bool (array_compare (&hx
, &hy
, 0, 0, 0));
925 scm_array_handle_release (&hy
);
926 scm_array_handle_release (&hx
);
931 static SCM
scm_i_array_equal_p (SCM
, SCM
, SCM
);
932 SCM_DEFINE (scm_i_array_equal_p
, "array-equal?", 0, 2, 1,
933 (SCM ra0
, SCM ra1
, SCM rest
),
934 "Return @code{#t} iff all arguments are arrays with the same\n"
935 "shape, the same type, and have corresponding elements which are\n"
936 "either @code{equal?} or @code{array-equal?}. This function\n"
937 "differs from @code{equal?} in that all arguments must be arrays.")
938 #define FUNC_NAME s_scm_i_array_equal_p
940 if (SCM_UNBNDP (ra0
) || SCM_UNBNDP (ra1
))
943 while (!scm_is_null (rest
))
944 { if (scm_is_false (scm_array_equal_p (ra0
, ra1
)))
947 ra1
= scm_car (rest
);
948 rest
= scm_cdr (rest
);
950 return scm_array_equal_p (ra0
, ra1
);
956 scm_init_array_map (void)
958 #include "libguile/array-map.x"
959 scm_add_feature (s_scm_array_for_each
);