ReactOS  0.4.14-dev-1331-g167fa2c
math.c
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1 /*
2  * Copyright 2008 Jacek Caban for CodeWeavers
3  * Copyright 2009 Piotr Caban
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
18  */
19 
20 #ifdef __REACTOS__
21 #include <wine/config.h>
22 #include <wine/port.h>
23 #endif
24 
25 #include <math.h>
26 #include <limits.h>
27 
28 #include "jscript.h"
29 #include "ntsecapi.h"
30 
31 #include "wine/debug.h"
32 
33 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
34 
35 static const WCHAR EW[] = {'E',0};
36 static const WCHAR LOG2EW[] = {'L','O','G','2','E',0};
37 static const WCHAR LOG10EW[] = {'L','O','G','1','0','E',0};
38 static const WCHAR LN2W[] = {'L','N','2',0};
39 static const WCHAR LN10W[] = {'L','N','1','0',0};
40 static const WCHAR PIW[] = {'P','I',0};
41 static const WCHAR SQRT2W[] = {'S','Q','R','T','2',0};
42 static const WCHAR SQRT1_2W[] = {'S','Q','R','T','1','_','2',0};
43 static const WCHAR absW[] = {'a','b','s',0};
44 static const WCHAR acosW[] = {'a','c','o','s',0};
45 static const WCHAR asinW[] = {'a','s','i','n',0};
46 static const WCHAR atanW[] = {'a','t','a','n',0};
47 static const WCHAR atan2W[] = {'a','t','a','n','2',0};
48 static const WCHAR ceilW[] = {'c','e','i','l',0};
49 static const WCHAR cosW[] = {'c','o','s',0};
50 static const WCHAR expW[] = {'e','x','p',0};
51 static const WCHAR floorW[] = {'f','l','o','o','r',0};
52 static const WCHAR logW[] = {'l','o','g',0};
53 static const WCHAR maxW[] = {'m','a','x',0};
54 static const WCHAR minW[] = {'m','i','n',0};
55 static const WCHAR powW[] = {'p','o','w',0};
56 static const WCHAR randomW[] = {'r','a','n','d','o','m',0};
57 static const WCHAR roundW[] = {'r','o','u','n','d',0};
58 static const WCHAR sinW[] = {'s','i','n',0};
59 static const WCHAR sqrtW[] = {'s','q','r','t',0};
60 static const WCHAR tanW[] = {'t','a','n',0};
61 
62 /* ECMA-262 3rd Edition 15.8.2.12 */
63 static HRESULT Math_abs(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
64  jsval_t *r)
65 {
66  double d;
67  HRESULT hres;
68 
69  TRACE("\n");
70 
71  if(!argc) {
72  if(r)
73  *r = jsval_number(NAN);
74  return S_OK;
75  }
76 
77  hres = to_number(ctx, argv[0], &d);
78  if(FAILED(hres))
79  return hres;
80 
81  if(r)
82  *r = jsval_number(d < 0.0 ? -d : d);
83  return S_OK;
84 }
85 
86 static HRESULT Math_acos(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
87  jsval_t *r)
88 {
89  double x;
90  HRESULT hres;
91 
92  TRACE("\n");
93 
94  if(!argc) {
95  if(r)
96  *r = jsval_number(NAN);
97  return S_OK;
98  }
99 
100  hres = to_number(ctx, argv[0], &x);
101  if(FAILED(hres))
102  return hres;
103 
104  if(r)
105  *r = jsval_number(x < -1.0 || x > 1.0 ? NAN : acos(x));
106  return S_OK;
107 }
108 
109 static HRESULT Math_asin(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
110  jsval_t *r)
111 {
112  double x;
113  HRESULT hres;
114 
115  TRACE("\n");
116 
117  if(!argc) {
118  if(r)
119  *r = jsval_number(NAN);
120  return S_OK;
121  }
122 
123  hres = to_number(ctx, argv[0], &x);
124  if(FAILED(hres))
125  return hres;
126 
127  if(r)
128  *r = jsval_number(x < -1.0 || x > 1.0 ? NAN : asin(x));
129  return S_OK;
130 }
131 
132 static HRESULT Math_atan(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
133  jsval_t *r)
134 {
135  double x;
136  HRESULT hres;
137 
138  TRACE("\n");
139 
140  if(!argc) {
141  if(r)
142  *r = jsval_number(NAN);
143  return S_OK;
144  }
145 
146  hres = to_number(ctx, argv[0], &x);
147  if(FAILED(hres))
148  return hres;
149 
150  if(r)
151  *r = jsval_number(atan(x));
152  return S_OK;
153 }
154 
155 static HRESULT Math_atan2(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
156  jsval_t *r)
157 {
158  double x, y;
159  HRESULT hres;
160 
161  TRACE("\n");
162 
163  if(argc<2) {
164  if(r)
165  *r = jsval_number(NAN);
166  return S_OK;
167  }
168 
169  hres = to_number(ctx, argv[0], &y);
170  if(FAILED(hres))
171  return hres;
172 
173  hres = to_number(ctx, argv[1], &x);
174  if(FAILED(hres))
175  return hres;
176 
177  if(r)
178  *r = jsval_number(atan2(y, x));
179  return S_OK;
180 }
181 
182 /* ECMA-262 3rd Edition 15.8.2.6 */
183 static HRESULT Math_ceil(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
184  jsval_t *r)
185 {
186  double x;
187  HRESULT hres;
188 
189  TRACE("\n");
190 
191  if(!argc) {
192  if(r)
193  *r = jsval_number(NAN);
194  return S_OK;
195  }
196 
197  hres = to_number(ctx, argv[0], &x);
198  if(FAILED(hres))
199  return hres;
200 
201  if(r)
202  *r = jsval_number(ceil(x));
203  return S_OK;
204 }
205 
206 static HRESULT Math_cos(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
207  jsval_t *r)
208 {
209  double x;
210  HRESULT hres;
211 
212  TRACE("\n");
213 
214  if(!argc) {
215  if(r)
216  *r = jsval_number(NAN);
217  return S_OK;
218  }
219 
220  hres = to_number(ctx, argv[0], &x);
221  if(FAILED(hres))
222  return hres;
223 
224  if(r)
225  *r = jsval_number(cos(x));
226  return S_OK;
227 }
228 
229 static HRESULT Math_exp(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
230  jsval_t *r)
231 {
232  double x;
233  HRESULT hres;
234 
235  TRACE("\n");
236 
237  if(!argc) {
238  if(r)
239  *r = jsval_number(NAN);
240  return S_OK;
241  }
242 
243  hres = to_number(ctx, argv[0], &x);
244  if(FAILED(hres))
245  return hres;
246 
247  if(r)
248  *r = jsval_number(exp(x));
249  return S_OK;
250 }
251 
252 static HRESULT Math_floor(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
253  jsval_t *r)
254 {
255  double x;
256  HRESULT hres;
257 
258  TRACE("\n");
259 
260  if(!argc) {
261  if(r)
262  *r = jsval_number(NAN);
263  return S_OK;
264  }
265 
266  hres = to_number(ctx, argv[0], &x);
267  if(FAILED(hres))
268  return hres;
269 
270  if(r)
271  *r = jsval_number(floor(x));
272  return S_OK;
273 }
274 
275 static HRESULT Math_log(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
276  jsval_t *r)
277 {
278  double x;
279  HRESULT hres;
280 
281  TRACE("\n");
282 
283  if(!argc) {
284  if(r)
285  *r = jsval_number(NAN);
286  return S_OK;
287  }
288 
289  hres = to_number(ctx, argv[0], &x);
290  if(FAILED(hres))
291  return hres;
292 
293  if(r)
294  *r = jsval_number(x < -0.0 ? NAN : log(x));
295  return S_OK;
296 }
297 
298 /* ECMA-262 3rd Edition 15.8.2.11 */
299 static HRESULT Math_max(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
300  jsval_t *r)
301 {
302  DOUBLE max, d;
303  DWORD i;
304  HRESULT hres;
305 
306  TRACE("\n");
307 
308  if(!argc) {
309  if(r)
310  *r = jsval_number(-INFINITY);
311  return S_OK;
312  }
313 
314  hres = to_number(ctx, argv[0], &max);
315  if(FAILED(hres))
316  return hres;
317 
318  for(i=1; i < argc; i++) {
319  hres = to_number(ctx, argv[i], &d);
320  if(FAILED(hres))
321  return hres;
322 
323  if(d > max || isnan(d))
324  max = d;
325  }
326 
327  if(r)
328  *r = jsval_number(max);
329  return S_OK;
330 }
331 
332 /* ECMA-262 3rd Edition 15.8.2.12 */
333 static HRESULT Math_min(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
334  jsval_t *r)
335 {
336  DOUBLE min, d;
337  DWORD i;
338  HRESULT hres;
339 
340  TRACE("\n");
341 
342  if(!argc) {
343  if(r)
344  *r = jsval_number(INFINITY);
345  return S_OK;
346  }
347 
348  hres = to_number(ctx, argv[0], &min);
349  if(FAILED(hres))
350  return hres;
351 
352  for(i=1; i < argc; i++) {
353  hres = to_number(ctx, argv[i], &d);
354  if(FAILED(hres))
355  return hres;
356 
357  if(d < min || isnan(d))
358  min = d;
359  }
360 
361  if(r)
362  *r = jsval_number(min);
363  return S_OK;
364 }
365 
366 /* ECMA-262 3rd Edition 15.8.2.13 */
367 static HRESULT Math_pow(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
368  jsval_t *r)
369 {
370  double x, y;
371  HRESULT hres;
372 
373  TRACE("\n");
374 
375  if(argc < 2) {
376  if(r)
377  *r = jsval_number(NAN);
378  return S_OK;
379  }
380 
381  hres = to_number(ctx, argv[0], &x);
382  if(FAILED(hres))
383  return hres;
384 
385  hres = to_number(ctx, argv[1], &y);
386  if(FAILED(hres))
387  return hres;
388 
389  if(r)
390  *r = jsval_number(pow(x, y));
391  return S_OK;
392 }
393 
394 /* ECMA-262 3rd Edition 15.8.2.14 */
395 static HRESULT Math_random(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
396  jsval_t *r)
397 {
398  UINT x;
399 
400  TRACE("\n");
401 
402  if(!RtlGenRandom(&x, sizeof(x)))
403  return E_UNEXPECTED;
404 
405  if(r)
406  *r = jsval_number((double)x/(double)UINT_MAX);
407  return S_OK;
408 }
409 
410 /* ECMA-262 3rd Edition 15.8.2.15 */
411 static HRESULT Math_round(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
412  jsval_t *r)
413 {
414  double x;
415  HRESULT hres;
416 
417  TRACE("\n");
418 
419  if(!argc) {
420  if(r)
421  *r = jsval_number(NAN);
422  return S_OK;
423  }
424 
425  hres = to_number(ctx, argv[0], &x);
426  if(FAILED(hres))
427  return hres;
428 
429  if(r)
430  *r = jsval_number(floor(x+0.5));
431  return S_OK;
432 }
433 
434 static HRESULT Math_sin(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
435  jsval_t *r)
436 {
437  double x;
438  HRESULT hres;
439 
440  TRACE("\n");
441 
442  if(!argc) {
443  if(r)
444  *r = jsval_number(NAN);
445  return S_OK;
446  }
447 
448  hres = to_number(ctx, argv[0], &x);
449  if(FAILED(hres))
450  return hres;
451 
452  if(r)
453  *r = jsval_number(sin(x));
454  return S_OK;
455 }
456 
457 static HRESULT Math_sqrt(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
458  jsval_t *r)
459 {
460  double x;
461  HRESULT hres;
462 
463  TRACE("\n");
464 
465  if(!argc) {
466  if(r)
467  *r = jsval_number(NAN);
468  return S_OK;
469  }
470 
471  hres = to_number(ctx, argv[0], &x);
472  if(FAILED(hres))
473  return hres;
474 
475  if(r)
476  *r = jsval_number(sqrt(x));
477  return S_OK;
478 }
479 
480 static HRESULT Math_tan(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
481  jsval_t *r)
482 {
483  double x;
484  HRESULT hres;
485 
486  TRACE("\n");
487 
488  if(!argc) {
489  if(r)
490  *r = jsval_number(NAN);
491  return S_OK;
492  }
493 
494  hres = to_number(ctx, argv[0], &x);
495  if(FAILED(hres))
496  return hres;
497 
498  if(r)
499  *r = jsval_number(tan(x));
500  return S_OK;
501 }
502 
503 static const builtin_prop_t Math_props[] = {
504  {absW, Math_abs, PROPF_METHOD|1},
505  {acosW, Math_acos, PROPF_METHOD|1},
506  {asinW, Math_asin, PROPF_METHOD|1},
507  {atanW, Math_atan, PROPF_METHOD|1},
508  {atan2W, Math_atan2, PROPF_METHOD|2},
509  {ceilW, Math_ceil, PROPF_METHOD|1},
510  {cosW, Math_cos, PROPF_METHOD|1},
511  {expW, Math_exp, PROPF_METHOD|1},
512  {floorW, Math_floor, PROPF_METHOD|1},
513  {logW, Math_log, PROPF_METHOD|1},
514  {maxW, Math_max, PROPF_METHOD|2},
515  {minW, Math_min, PROPF_METHOD|2},
516  {powW, Math_pow, PROPF_METHOD|2},
517  {randomW, Math_random, PROPF_METHOD},
518  {roundW, Math_round, PROPF_METHOD|1},
519  {sinW, Math_sin, PROPF_METHOD|1},
520  {sqrtW, Math_sqrt, PROPF_METHOD|1},
521  {tanW, Math_tan, PROPF_METHOD|1}
522 };
523 
524 static const builtin_info_t Math_info = {
525  JSCLASS_MATH,
526  {NULL, NULL, 0},
527  ARRAY_SIZE(Math_props),
528  Math_props,
529  NULL,
530  NULL
531 };
532 
533 HRESULT create_math(script_ctx_t *ctx, jsdisp_t **ret)
534 {
535  jsdisp_t *math;
536  unsigned i;
537  HRESULT hres;
538 
539  struct {
540  const WCHAR *name;
541  DOUBLE val;
542  }constants[] = {
543  {EW, M_E}, /* ECMA-262 3rd Edition 15.8.1.1 */
544  {LN10W, M_LN10}, /* ECMA-262 3rd Edition 15.8.1.2 */
545  {LN2W, M_LN2}, /* ECMA-262 3rd Edition 15.8.1.3 */
546  {LOG2EW, M_LOG2E}, /* ECMA-262 3rd Edition 15.8.1.4 */
547  {LOG10EW, M_LOG10E}, /* ECMA-262 3rd Edition 15.8.1.5 */
548  {PIW, M_PI}, /* ECMA-262 3rd Edition 15.8.1.6 */
549  {SQRT1_2W, M_SQRT1_2}, /* ECMA-262 3rd Edition 15.8.1.7 */
550  {SQRT2W, M_SQRT2}, /* ECMA-262 3rd Edition 15.8.1.8 */
551  };
552 
553  math = heap_alloc_zero(sizeof(jsdisp_t));
554  if(!math)
555  return E_OUTOFMEMORY;
556 
557  hres = init_dispex_from_constr(math, ctx, &Math_info, ctx->object_constr);
558  if(FAILED(hres)) {
559  heap_free(math);
560  return hres;
561  }
562 
563  for(i=0; i < ARRAY_SIZE(constants); i++) {
564  hres = jsdisp_define_data_property(math, constants[i].name, 0,
565  jsval_number(constants[i].val));
566  if(FAILED(hres)) {
567  jsdisp_release(math);
568  return hres;
569  }
570  }
571 
572  *ret = math;
573  return S_OK;
574 }
sqrt
_STLP_DECLSPEC complex< float > _STLP_CALL sqrt(const complex< float > &)
Definition: complex.cpp:188
_jsval_t
Definition: jsval.h:54
ceil
_Check_return_ _CRTIMP double __cdecl ceil(_In_ double x)
argc
static int argc
Definition: ServiceArgs.c:12
max
#define max(a, b)
Definition: svc.c:63
Math_round
static HRESULT Math_round(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
Definition: math.c:411
floorW
static const WCHAR floorW[]
Definition: math.c:51
_script_ctx_t
Definition: jscript.h:409
roundW
static const WCHAR roundW[]
Definition: math.c:57
atan2
valarray< _Tp > atan2(const valarray< _Tp > &__x, const valarray< _Tp > &__y)
Definition: _valarray.h:928
randomW
static const WCHAR randomW[]
Definition: math.c:56
powW
static const WCHAR powW[]
Definition: math.c:55
Math_props
static const builtin_prop_t Math_props[]
Definition: math.c:503
r
GLdouble GLdouble GLdouble r
Definition: gl.h:2055
Math_atan2
static HRESULT Math_atan2(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
Definition: math.c:155
Math_floor
static HRESULT Math_floor(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
Definition: math.c:252
sqrtW
static const WCHAR sqrtW[]
Definition: math.c:59
jsdisp_define_data_property
HRESULT jsdisp_define_data_property(jsdisp_t *obj, const WCHAR *name, unsigned flags, jsval_t value)
Definition: dispex.c:1801
SQRT1_2W
static const WCHAR SQRT1_2W[]
Definition: math.c:42
Math_sin
static HRESULT Math_sin(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
Definition: math.c:434
x
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
jsdisp_t
Definition: jscript.h:230
PIW
static const WCHAR PIW[]
Definition: math.c:40
SQRT2W
static const WCHAR SQRT2W[]
Definition: math.c:41
builtin_info_t
Definition: jscript.h:218
argv
#define argv
Definition: mplay32.c:18
Math_pow
static HRESULT Math_pow(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
Definition: math.c:367
create_math
HRESULT create_math(script_ctx_t *ctx, jsdisp_t **ret)
Definition: math.c:533
asin
valarray< _Tp > asin(const valarray< _Tp > &__x)
Definition: _valarray.h:910
acos
valarray< _Tp > acos(const valarray< _Tp > &__x)
Definition: _valarray.h:901
i
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
Math_acos
static HRESULT Math_acos(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
Definition: math.c:86
M_SQRT2
#define M_SQRT2
Definition: mpg123lib_intern.h:34
to_number
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Definition: complex_trig.cpp:92
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Definition: math.c:35
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Definition: math.c:48
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Definition: name.c:38
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