/
pl-floatn.c
460 lines (422 loc) · 18.4 KB
/
pl-floatn.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
#include "pl-floatn.h"
#include <string.h>
#include <foreign_interface.h>
// Three figures ~= 10 bits (remember, 2^10=1024)
// equivalent double precision ~= 52 bits (17 decimals)
// equivalent decimal128 precision ~= 110 bits (34 decimals)
// equivalent float128 precision ~= 112 bits (34 decimals)
#define DEFAULT_PRECISION 104
#define DEFAULT_NUMDIGITS 34
int floatn_out_str(IOSTREAM *stream, floatn_t *ref) {
size_t l, t;
mpfr_exp_t e;
int err;
char *s0, *s, *p, c;
if (!mpfr_regular_p(*ref))
{
if (mpfr_nan_p(*ref))
Sfputs("1.5NaN", stream);
else if (mpfr_inf_p(*ref))
Sfputs(MPFR_SIGN(*ref) > 0 ? "1.0Inf" : "-1.0Inf", stream);
else
Sfputs(MPFR_SIGN(*ref) ? "0" : "-0", stream);
return TRUE;
}
s = mpfr_get_str(NULL, &e, 10, 0, *ref, MPFR_RNDN);
s0 = s;
err = (*s == '-' && Sputc (*s++, stream) == EOF);
p = s;
l = strlen (s);
t = MAX(0, e);
while ((l > t) && (s[l-1] == '0'))
l--;
if (e == l) {
e = 0;
} else if ((e>=-2)&&(e<=0)) {
err = err
|| Sputc ((unsigned char) '0', stream) == EOF
|| Sputc ((unsigned char) '.', stream) == EOF;
while (e<0) {
err = err || Sputc ((unsigned char) '0', stream) == EOF;
e++;
}
} else if ((e>0) && e < l) {
while (e!=0) {
err = err || Sputc ((unsigned char) *s++, stream) == EOF;
e--;
}
err = err || Sputc ((unsigned char) '.', stream) == EOF;
} else {
err = err
|| Sputc (*s++, stream) == EOF /* leading digit */
|| Sputc ((unsigned char) '.', stream) == EOF;
e--; /* due to the leading digit */
}
c = p[l];
p[l] = '\0';
err = err || Sfputs (s, stream) == EOF;
p[l] = c;
mpfr_free_str(s0);
if (e!=0) {
err = err
|| Sputc ((unsigned char) 'e', stream) == EOF
|| (e >0 && Sputc ((unsigned char) '+', stream) == EOF);
if (err)
return FALSE;
Sfprintf(stream, "%ld", e);
} else if (err)
return FALSE;
return TRUE;
}
static int write_floatn_ref(IOSTREAM *stream, atom_t aref, int flags)
{
floatn_t *ref = PL_blob_data(aref, NULL, NULL);
return floatn_out_str(stream, ref);
}
static int release_floatn(atom_t aref)
{
floatn_t *ref = PL_blob_data(aref, NULL, NULL);
mpfr_clear(*ref);
free(ref);
return TRUE;
}
static void aquire_floatn(atom_t aref)
{
floatn_t *ref = PL_blob_data(aref, NULL, NULL);
(void) ref;
}
static PL_blob_t __record_mpfr =
{
PL_BLOB_MAGIC,
//PL_BLOB_UNIQUE|
PL_BLOB_NOCOPY,
"floatn",
release_floatn,
NULL,
write_floatn_ref,
aquire_floatn
};
PL_blob_t *record_mpfr = &__record_mpfr;
foreign_t is_floatn_t(term_t v) {
void *src;
PL_blob_t *type;
return PL_get_blob(v, (void *)&src, NULL, &type)
&& type == record_mpfr;
}
foreign_t is_mpfr_prec_t(term_t v) {
return PL_is_integer(v);
}
static void * PL_realloc_mp(void *mem, size_t old_size, size_t new_size) {
void *p = PL_realloc(mem, new_size);
return p;
}
static void PL_free_mp(void *mem, size_t size) {
PL_free(mem);
}
void floatn_init() {
// PL_action(PL_GMP_SET_ALLOC_FUNCTIONS, FALSE)
// mp_set_memory_functions(NULL, NULL, NULL);
// Use prolog alocation functions so that in case of an error, it will be
// handled in prolog
mp_set_memory_functions(PL_malloc, PL_realloc_mp, PL_free_mp);
}
#define GEN_FLOATN_pc_2(name) \
foreign_t pc_floatn_##name(term_t p, term_t r) \
{ \
floatn_t *fr; \
PL_blob_t *type; \
int prec; \
fr = malloc(sizeof(floatn_t)); \
if (!PL_get_integer(p, &prec)) \
prec = mpfr_get_default_prec(); \
mpfr_init2(*fr, prec); \
mpfr_const_##name(*fr, MPFR_RNDN); \
return PL_unify_floatn_t(r, fr); \
}
#define GEN_FLOATN_pl_3(name) \
foreign_t pl_floatn_##name(term_t p, term_t r, term_t a) \
{ \
floatn_t *fr; \
PL_blob_t *type; \
int prec; \
floatn_t *ra; \
__rtcheck(PL_get_floatn_t(a, &ra)); \
fr = malloc(sizeof(floatn_t)); \
if (!PL_get_integer(p, &prec)) \
prec = mpfr_get_prec(*ra); \
mpfr_init2(*fr, prec); \
mpfr_##name(*fr, *ra, MPFR_RNDN); \
return PL_unify_floatn_t(r, fr); \
}
#define GEN_FLOATN_pi_3(name) \
foreign_t pi_floatn_##name(term_t p, term_t r, term_t a) \
{ \
floatn_t *fr; \
PL_blob_t *type; \
int prec; \
int ia; \
if (!PL_get_integer(a, &ia)) { \
PL_type_error("integer", a); \
return FALSE; \
} \
fr = malloc(sizeof(floatn_t)); \
if (!PL_get_integer(p, &prec)) \
prec = mpfr_get_default_prec(); \
mpfr_init2(*fr, prec); \
mpfr_##name(*fr, ia, MPFR_RNDN); \
return PL_unify_floatn_t(r, fr); \
}
#define GEN_FLOATN_pl_4(name) \
foreign_t pl_floatn_##name(term_t p, term_t r, term_t a, term_t b) \
{ \
floatn_t *fr; \
PL_blob_t *type; \
int prec; \
floatn_t *ra, *rb; \
__rtcheck(PL_get_floatn_t(a, &ra)); \
__rtcheck(PL_get_floatn_t(b, &rb)); \
fr = malloc(sizeof(floatn_t)); \
if (!PL_get_integer(p, &prec)) \
prec = MAX(mpfr_get_prec(*ra), mpfr_get_prec(*rb)); \
mpfr_init2(*fr, prec); \
mpfr_##name(*fr, *ra, *rb, MPFR_RNDN); \
return PL_unify_floatn_t(r, fr); \
}
#define GEN_FLOATN_ip_4(name) \
foreign_t ip_floatn_##name(term_t p, term_t r, term_t a, term_t b) \
{ \
floatn_t *fr; \
PL_blob_t *type; \
int prec; \
floatn_t *ra; \
__rtcheck(PL_get_floatn_t(a, &ra)); \
int ib; \
if (!PL_get_integer(b, &ib)) { \
PL_type_error("integer", b); \
return FALSE; \
} \
fr = malloc(sizeof(floatn_t)); \
if (!PL_get_integer(p, &prec)) \
prec = mpfr_get_prec(*ra); \
mpfr_init2(*fr, prec); \
mpfr_##name(*fr, *ra, ib, MPFR_RNDN); \
return PL_unify_floatn_t(r, fr); \
}
#define GEN_FLOATN_pi_4(name) \
foreign_t pi_floatn_##name(term_t p, term_t r, term_t a, term_t b) \
{ \
floatn_t *fr; \
PL_blob_t *type; \
int prec; \
int ia; \
if (!PL_get_integer(a, &ia)) { \
PL_type_error("integer", a); \
return FALSE; \
} \
floatn_t *rb; \
__rtcheck(PL_get_floatn_t(b, &rb)); \
fr = malloc(sizeof(floatn_t)); \
if (!PL_get_integer(p, &prec)) \
prec = mpfr_get_prec(*rb); \
mpfr_init2(*fr, prec); \
mpfr_##name(*fr, ia, *rb, MPFR_RNDN); \
return PL_unify_floatn_t(r, fr); \
}
#define GEN_FLOATN_pi_2(name) \
foreign_t pi_floatn_##name(term_t r, term_t a) \
{ \
long i; \
floatn_t *ra; \
__rtcheck(PL_get_floatn_t(a, &ra)); \
i = mpfr_##name(*ra, MPFR_RNDN); \
return PL_unify_integer(r, i); \
}
#define GEN_FLOATN_pl_5(name) \
foreign_t pl_floatn_##name(term_t p, term_t r, \
term_t a, term_t b, term_t c) \
{ \
floatn_t *fr; \
PL_blob_t *type; \
int prec; \
floatn_t *ra, *rb, *rc; \
__rtcheck(PL_get_floatn_t(a, &ra)); \
__rtcheck(PL_get_floatn_t(b, &rb)); \
__rtcheck(PL_get_floatn_t(c, &rc)); \
fr = malloc(sizeof(floatn_t)); \
if (!PL_get_integer(p, &prec)) \
prec = MAX(mpfr_get_prec(*ra), \
MAX(mpfr_get_prec(*rb), \
mpfr_get_prec(*rc))); \
mpfr_init2(*fr, prec); \
mpfr_##name(*fr, *ra, *rb, *rc, MPFR_RNDN); \
return PL_unify_floatn_t(r, fr); \
}
#define GEN_FLOATN_pl_6(name) \
foreign_t pl_floatn_##name(term_t p, term_t r, term_t a, term_t b, \
term_t c, term_t d) \
{ \
floatn_t *fr; \
PL_blob_t *type; \
int prec; \
floatn_t *ra, *rb, *rc, *rd; \
__rtcheck(PL_get_floatn_t(a, &ra)); \
__rtcheck(PL_get_floatn_t(b, &rb)); \
__rtcheck(PL_get_floatn_t(c, &rc)); \
__rtcheck(PL_get_floatn_t(d, &rd)); \
fr = malloc(sizeof(floatn_t)); \
if (!PL_get_integer(p, &prec)) \
prec = MAX(MAX(mpfr_get_prec(*ra), \
mpfr_get_prec(*rb)), \
MAX(mpfr_get_prec(*rc), \
mpfr_get_prec(*rd))); \
mpfr_init2(*fr, prec); \
mpfr_##name(*fr, *ra, *rb, *rc, *rd, MPFR_RNDN); \
return PL_unify_floatn_t(r, fr); \
}
#define GEN_FLOATN_is_1(name) \
foreign_t is_floatn_##name(term_t x) \
{ \
floatn_t *rx; \
__rtcheck(PL_get_floatn_t(x, &rx)); \
return mpfr_##name##_p(*rx); \
}
#define GEN_FLOATN_is_2(name) \
foreign_t is_floatn_##name(term_t x, term_t y) \
{ \
floatn_t *rx, *ry; \
__rtcheck(PL_get_floatn_t(x, &rx)); \
__rtcheck(PL_get_floatn_t(y, &ry)); \
return mpfr_##name##_p(*rx, *ry); \
}
#define GEN_FLOATN_ALL(__pre, __func) GEN_FLOATN_##__pre(__func)
GEN_FLOATN_pi_3(fac_ui)
foreign_t pl_floatn(term_t expr, term_t precision, term_t value)
{
floatn_t *ref;
int prec, undefined_prec;
undefined_prec = PL_is_variable(precision);
if (!PL_get_integer(precision, &prec)) {
if (!undefined_prec)
return FALSE;
prec = 0;
}
switch (PL_term_type(expr)) {
case PL_VARIABLE:
/* case PL_NIL: */
if (!prec)
prec = mpfr_get_default_prec();
ref = malloc(sizeof(floatn_t));
mpfr_init2(*ref, prec);
break; // NAN
case PL_INTEGER:
{
mpz_t i;
mpz_init(i);
__rtcheck(PL_get_mpz(expr, i));
if (!prec)
prec = MAX(mpfr_get_default_prec(), mpz_sizeinbase(i, 2));
ref = malloc(sizeof(floatn_t));
mpfr_init2(*ref, prec);
mpfr_set_z(*ref, i, MPFR_RNDN);
mpz_clear(i);
break;
}
case PL_TERM:
{
mpq_t q;
mpq_init(q);
if (!PL_get_mpq(expr, q))
return FALSE;
if (!prec)
prec = mpfr_get_default_prec();
ref = malloc(sizeof(floatn_t));
mpfr_init2(*ref, prec);
mpfr_set_q(*ref, q, MPFR_RNDN);
mpq_clear(q);
break;
}
case PL_ATOM:
{
char *c, *p;
__rtcheck(PL_get_atom_chars(expr, &c));
if (!prec)
prec = MAX(mpfr_get_default_prec(), strlen(c)*10/3);
ref = malloc(sizeof(floatn_t));
mpfr_init2(*ref, prec);
mpfr_strtofr(*ref, c, &p, 0, MPFR_RNDN);
if (p==c)
{
mpfr_clear(*ref);
free(ref);
return FALSE;
}
break;
}
case PL_STRING:
{
char *c, *p;
size_t len;
__rtcheck(PL_get_string_chars(expr, &c, &len));
if (!prec)
prec = MAX(mpfr_get_default_prec(), strlen(c)*10/3);
ref = malloc(sizeof(floatn_t));
mpfr_init2(*ref, prec);
mpfr_strtofr(*ref, c, 0, 0, MPFR_RNDN);
if (p==c)
{
mpfr_clear(*ref);
free(ref);
return FALSE;
}
break;
}
case PL_FLOAT:
{
double d;
__rtcheck(PL_get_float(expr, &d));
if (!prec)
prec = mpfr_get_default_prec();
ref = malloc(sizeof(floatn_t));
mpfr_init2(*ref, prec);
mpfr_set_d(*ref, d, MPFR_RNDN);
break;
}
case PL_BLOB:
{
PL_blob_t *type;
floatn_t *v;
int vp;
__rtcheck(PL_get_floatn_t(expr, &v));
vp = mpfr_get_prec(*v);
if (!prec) prec = vp;
if (prec == vp) {
if (undefined_prec)
__rtcheck(PL_unify_integer(precision, prec));
return PL_unify(value, expr);
} else {
ref = malloc(sizeof(floatn_t));
mpfr_init2(*ref, prec);
mpfr_set(*ref, *v, MPFR_RNDN);
}
break;
}
default:
return FALSE;
}
if (undefined_prec)
__rtcheck(PL_unify_integer(precision, prec));
return PL_unify_floatn_t(value, ref);
}
int PL_unify_floatn_t(term_t t, floatn_t *fr)
{
return PL_unify_blob(t, fr, sizeof(floatn_t), record_mpfr);
}
int PL_get_floatn_t(term_t t, floatn_t **fr)
{
PL_blob_t *type;
if (PL_get_blob(t, (void **)fr, NULL, &type) && type == record_mpfr)
return TRUE;
/* PL_type_error("floatn", t); */
return FALSE;
}
#include "pl-floatn_auto.h"