1 # NumPy static imports for Cython 2 # 3 # If any of the PyArray_* functions are called, import_array must be 4 # called first. 5 # 6 # This also defines backwards-compatability buffer acquisition 7 # code for use in Python 2.x (or Python <= 2.5 when NumPy starts 8 # implementing PEP-3118 directly). 9 # 10 # Because of laziness, the format string of the buffer is statically 11 # allocated. Increase the size if this is not enough, or submit a 12 # patch to do this properly. 13 # 14 # Author: Dag Sverre Seljebotn 15 # 16 17 DEF _buffer_format_string_len = 255 18 19 cimport cpython.buffer as pybuf 20 from cpython.ref cimport Py_INCREF, Py_XDECREF 21 from cpython.object cimport PyObject 22 from cpython.type cimport type 23 cimport libc.stdlib as stdlib 24 cimport libc.stdio as stdio 25 26 cdef extern from "Python.h": 27 ctypedef int Py_intptr_t 28 29 cdef extern from "numpy/arrayobject.h": 30 ctypedef Py_intptr_t npy_intp 31 ctypedef size_t npy_uintp 32 33 cdef enum NPY_TYPES: 34 NPY_BOOL 35 NPY_BYTE 36 NPY_UBYTE 37 NPY_SHORT 38 NPY_USHORT 39 NPY_INT 40 NPY_UINT 41 NPY_LONG 42 NPY_ULONG 43 NPY_LONGLONG 44 NPY_ULONGLONG 45 NPY_FLOAT 46 NPY_DOUBLE 47 NPY_LONGDOUBLE 48 NPY_CFLOAT 49 NPY_CDOUBLE 50 NPY_CLONGDOUBLE 51 NPY_OBJECT 52 NPY_STRING 53 NPY_UNICODE 54 NPY_VOID 55 NPY_NTYPES 56 NPY_NOTYPE 57 58 NPY_INT8 59 NPY_INT16 60 NPY_INT32 61 NPY_INT64 62 NPY_INT128 63 NPY_INT256 64 NPY_UINT8 65 NPY_UINT16 66 NPY_UINT32 67 NPY_UINT64 68 NPY_UINT128 69 NPY_UINT256 70 NPY_FLOAT16 71 NPY_FLOAT32 72 NPY_FLOAT64 73 NPY_FLOAT80 74 NPY_FLOAT96 75 NPY_FLOAT128 76 NPY_FLOAT256 77 NPY_COMPLEX32 78 NPY_COMPLEX64 79 NPY_COMPLEX128 80 NPY_COMPLEX160 81 NPY_COMPLEX192 82 NPY_COMPLEX256 83 NPY_COMPLEX512 84 85 NPY_INTP 86 87 ctypedef enum NPY_ORDER: 88 NPY_ANYORDER 89 NPY_CORDER 90 NPY_FORTRANORDER 91 92 ctypedef enum NPY_CLIPMODE: 93 NPY_CLIP 94 NPY_WRAP 95 NPY_RAISE 96 97 ctypedef enum NPY_SCALARKIND: 98 NPY_NOSCALAR, 99 NPY_BOOL_SCALAR, 100 NPY_INTPOS_SCALAR, 101 NPY_INTNEG_SCALAR, 102 NPY_FLOAT_SCALAR, 103 NPY_COMPLEX_SCALAR, 104 NPY_OBJECT_SCALAR 105 106 ctypedef enum NPY_SORTKIND: 107 NPY_QUICKSORT 108 NPY_HEAPSORT 109 NPY_MERGESORT 110 111 ctypedef enum NPY_SEARCHSIDE: 112 NPY_SEARCHLEFT 113 NPY_SEARCHRIGHT 114 115 enum: 116 NPY_C_CONTIGUOUS 117 NPY_F_CONTIGUOUS 118 NPY_CONTIGUOUS 119 NPY_FORTRAN 120 NPY_OWNDATA 121 NPY_FORCECAST 122 NPY_ENSURECOPY 123 NPY_ENSUREARRAY 124 NPY_ELEMENTSTRIDES 125 NPY_ALIGNED 126 NPY_NOTSWAPPED 127 NPY_WRITEABLE 128 NPY_UPDATEIFCOPY 129 NPY_ARR_HAS_DESCR 130 131 NPY_BEHAVED 132 NPY_BEHAVED_NS 133 NPY_CARRAY 134 NPY_CARRAY_RO 135 NPY_FARRAY 136 NPY_FARRAY_RO 137 NPY_DEFAULT 138 139 NPY_IN_ARRAY 140 NPY_OUT_ARRAY 141 NPY_INOUT_ARRAY 142 NPY_IN_FARRAY 143 NPY_OUT_FARRAY 144 NPY_INOUT_FARRAY 145 146 NPY_UPDATE_ALL 147 148 cdef enum: 149 NPY_MAXDIMS 150 151 npy_intp NPY_MAX_ELSIZE 152 153 ctypedef void (*PyArray_VectorUnaryFunc)(void *, void *, npy_intp, void *, void *) 154 155 ctypedef class numpy.dtype [object PyArray_Descr]: 156 # Use PyDataType_* macros when possible, however there are no macros 157 # for accessing some of the fields, so some are defined. Please 158 # ask on cython-dev if you need more. 159 cdef int type_num 160 cdef int itemsize "elsize" 161 cdef char byteorder 162 cdef object fields 163 cdef tuple names 164 165 ctypedef extern class numpy.flatiter [object PyArrayIterObject]: 166 # Use through macros 167 pass 168 169 ctypedef extern class numpy.broadcast [object PyArrayMultiIterObject]: 170 # Use through macros 171 pass 172 173 ctypedef struct PyArrayObject: 174 # For use in situations where ndarray can't replace PyArrayObject*, 175 # like PyArrayObject**. 176 pass 177 178 ctypedef class numpy.ndarray [object PyArrayObject]: 179 cdef __cythonbufferdefaults__ = {"mode": "strided"} 180 181 cdef: 182 # Only taking a few of the most commonly used and stable fields. 183 # One should use PyArray_* macros instead to access the C fields. 184 char *data 185 int ndim "nd" 186 npy_intp *shape "dimensions" 187 npy_intp *strides 188 dtype descr 189 PyObject* base 190 191 # Note: This syntax (function definition in pxd files) is an 192 # experimental exception made for __getbuffer__ and __releasebuffer__ 193 # -- the details of this may change. 194 def __getbuffer__(ndarray self, Py_buffer* info, int flags): 195 # This implementation of getbuffer is geared towards Cython 196 # requirements, and does not yet fullfill the PEP. 197 # In particular strided access is always provided regardless 198 # of flags 199 200 if info == NULL: return 201 202 cdef int copy_shape, i, ndim 203 cdef int endian_detector = 1 204 cdef bint little_endian = ((<char*>&endian_detector)[0] != 0) 205 206 ndim = PyArray_NDIM(self) 207 208 if sizeof(npy_intp) != sizeof(Py_ssize_t): 209 copy_shape = 1 210 else: 211 copy_shape = 0 212 213 if ((flags & pybuf.PyBUF_C_CONTIGUOUS == pybuf.PyBUF_C_CONTIGUOUS) 214 and not PyArray_CHKFLAGS(self, NPY_C_CONTIGUOUS)): 215 raise ValueError(u"ndarray is not C contiguous") 216 217 if ((flags & pybuf.PyBUF_F_CONTIGUOUS == pybuf.PyBUF_F_CONTIGUOUS) 218 and not PyArray_CHKFLAGS(self, NPY_F_CONTIGUOUS)): 219 raise ValueError(u"ndarray is not Fortran contiguous") 220 221 info.buf = PyArray_DATA(self) 222 info.ndim = ndim 223 if copy_shape: 224 # Allocate new buffer for strides and shape info. 225 # This is allocated as one block, strides first. 226 info.strides = <Py_ssize_t*>stdlib.malloc(sizeof(Py_ssize_t) * <size_t>ndim * 2) 227 info.shape = info.strides + ndim 228 for i in range(ndim): 229 info.strides[i] = PyArray_STRIDES(self)[i] 230 info.shape[i] = PyArray_DIMS(self)[i] 231 else: 232 info.strides = <Py_ssize_t*>PyArray_STRIDES(self) 233 info.shape = <Py_ssize_t*>PyArray_DIMS(self) 234 info.suboffsets = NULL 235 info.itemsize = PyArray_ITEMSIZE(self) 236 info.readonly = not PyArray_ISWRITEABLE(self) 237 238 cdef int t 239 cdef char* f = NULL 240 cdef dtype descr = self.descr 241 cdef list stack 242 cdef int offset 243 244 cdef bint hasfields = PyDataType_HASFIELDS(descr) 245 246 if not hasfields and not copy_shape: 247 # do not call releasebuffer 248 info.obj = None 249 else: 250 # need to call releasebuffer 251 info.obj = self 252 253 if not hasfields: 254 t = descr.type_num 255 if ((descr.byteorder == c'>' and little_endian) or 256 (descr.byteorder == c'<' and not little_endian)): 257 raise ValueError(u"Non-native byte order not supported") 258 if t == NPY_BYTE: f = "b" 259 elif t == NPY_UBYTE: f = "B" 260 elif t == NPY_SHORT: f = "h" 261 elif t == NPY_USHORT: f = "H" 262 elif t == NPY_INT: f = "i" 263 elif t == NPY_UINT: f = "I" 264 elif t == NPY_LONG: f = "l" 265 elif t == NPY_ULONG: f = "L" 266 elif t == NPY_LONGLONG: f = "q" 267 elif t == NPY_ULONGLONG: f = "Q" 268 elif t == NPY_FLOAT: f = "f" 269 elif t == NPY_DOUBLE: f = "d" 270 elif t == NPY_LONGDOUBLE: f = "g" 271 elif t == NPY_CFLOAT: f = "Zf" 272 elif t == NPY_CDOUBLE: f = "Zd" 273 elif t == NPY_CLONGDOUBLE: f = "Zg" 274 elif t == NPY_OBJECT: f = "O" 275 else: 276 raise ValueError(u"unknown dtype code in numpy.pxd (%d)" % t) 277 info.format = f 278 return 279 else: 280 info.format = <char*>stdlib.malloc(_buffer_format_string_len) 281 info.format[0] = c'^' # Native data types, manual alignment 282 offset = 0 283 f = _util_dtypestring(descr, info.format + 1, 284 info.format + _buffer_format_string_len, 285 &offset) 286 f[0] = c'\0' # Terminate format string 287 288 def __releasebuffer__(ndarray self, Py_buffer* info): 289 if PyArray_HASFIELDS(self): 290 stdlib.free(info.format) 291 if sizeof(npy_intp) != sizeof(Py_ssize_t): 292 stdlib.free(info.strides) 293 # info.shape was stored after info.strides in the same block 294 295 296 ctypedef unsigned char npy_bool 297 298 ctypedef signed char npy_byte 299 ctypedef signed short npy_short 300 ctypedef signed int npy_int 301 ctypedef signed long npy_long 302 ctypedef signed long long npy_longlong 303 304 ctypedef unsigned char npy_ubyte 305 ctypedef unsigned short npy_ushort 306 ctypedef unsigned int npy_uint 307 ctypedef unsigned long npy_ulong 308 ctypedef unsigned long long npy_ulonglong 309 310 ctypedef float npy_float 311 ctypedef double npy_double 312 ctypedef long double npy_longdouble 313 314 ctypedef signed char npy_int8 315 ctypedef signed short npy_int16 316 ctypedef signed int npy_int32 317 ctypedef signed long long npy_int64 318 ctypedef signed long long npy_int96 319 ctypedef signed long long npy_int128 320 321 ctypedef unsigned char npy_uint8 322 ctypedef unsigned short npy_uint16 323 ctypedef unsigned int npy_uint32 324 ctypedef unsigned long long npy_uint64 325 ctypedef unsigned long long npy_uint96 326 ctypedef unsigned long long npy_uint128 327 328 ctypedef float npy_float32 329 ctypedef double npy_float64 330 ctypedef long double npy_float80 331 ctypedef long double npy_float96 332 ctypedef long double npy_float128 333 334 ctypedef struct npy_cfloat: 335 double real 336 double imag 337 338 ctypedef struct npy_cdouble: 339 double real 340 double imag 341 342 ctypedef struct npy_clongdouble: 343 double real 344 double imag 345 346 ctypedef struct npy_complex64: 347 double real 348 double imag 349 350 ctypedef struct npy_complex128: 351 double real 352 double imag 353 354 ctypedef struct npy_complex160: 355 double real 356 double imag 357 358 ctypedef struct npy_complex192: 359 double real 360 double imag 361 362 ctypedef struct npy_complex256: 363 double real 364 double imag 365 366 ctypedef struct PyArray_Dims: 367 npy_intp *ptr 368 int len 369 370 void import_array() 371 372 # 373 # Macros from ndarrayobject.h 374 # 375 bint PyArray_CHKFLAGS(ndarray m, int flags) 376 bint PyArray_ISCONTIGUOUS(ndarray m) 377 bint PyArray_ISWRITEABLE(ndarray m) 378 bint PyArray_ISALIGNED(ndarray m) 379 380 int PyArray_NDIM(ndarray) 381 bint PyArray_ISONESEGMENT(ndarray) 382 bint PyArray_ISFORTRAN(ndarray) 383 int PyArray_FORTRANIF(ndarray) 384 385 void* PyArray_DATA(ndarray) 386 char* PyArray_BYTES(ndarray) 387 npy_intp* PyArray_DIMS(ndarray) 388 npy_intp* PyArray_STRIDES(ndarray) 389 npy_intp PyArray_DIM(ndarray, size_t) 390 npy_intp PyArray_STRIDE(ndarray, size_t) 391 392 # object PyArray_BASE(ndarray) wrong refcount semantics 393 # dtype PyArray_DESCR(ndarray) wrong refcount semantics 394 int PyArray_FLAGS(ndarray) 395 npy_intp PyArray_ITEMSIZE(ndarray) 396 int PyArray_TYPE(ndarray arr) 397 398 object PyArray_GETITEM(ndarray arr, void *itemptr) 399 int PyArray_SETITEM(ndarray arr, void *itemptr, object obj) 400 401 bint PyTypeNum_ISBOOL(int) 402 bint PyTypeNum_ISUNSIGNED(int) 403 bint PyTypeNum_ISSIGNED(int) 404 bint PyTypeNum_ISINTEGER(int) 405 bint PyTypeNum_ISFLOAT(int) 406 bint PyTypeNum_ISNUMBER(int) 407 bint PyTypeNum_ISSTRING(int) 408 bint PyTypeNum_ISCOMPLEX(int) 409 bint PyTypeNum_ISPYTHON(int) 410 bint PyTypeNum_ISFLEXIBLE(int) 411 bint PyTypeNum_ISUSERDEF(int) 412 bint PyTypeNum_ISEXTENDED(int) 413 bint PyTypeNum_ISOBJECT(int) 414 415 bint PyDataType_ISBOOL(dtype) 416 bint PyDataType_ISUNSIGNED(dtype) 417 bint PyDataType_ISSIGNED(dtype) 418 bint PyDataType_ISINTEGER(dtype) 419 bint PyDataType_ISFLOAT(dtype) 420 bint PyDataType_ISNUMBER(dtype) 421 bint PyDataType_ISSTRING(dtype) 422 bint PyDataType_ISCOMPLEX(dtype) 423 bint PyDataType_ISPYTHON(dtype) 424 bint PyDataType_ISFLEXIBLE(dtype) 425 bint PyDataType_ISUSERDEF(dtype) 426 bint PyDataType_ISEXTENDED(dtype) 427 bint PyDataType_ISOBJECT(dtype) 428 bint PyDataType_HASFIELDS(dtype) 429 430 bint PyArray_ISBOOL(ndarray) 431 bint PyArray_ISUNSIGNED(ndarray) 432 bint PyArray_ISSIGNED(ndarray) 433 bint PyArray_ISINTEGER(ndarray) 434 bint PyArray_ISFLOAT(ndarray) 435 bint PyArray_ISNUMBER(ndarray) 436 bint PyArray_ISSTRING(ndarray) 437 bint PyArray_ISCOMPLEX(ndarray) 438 bint PyArray_ISPYTHON(ndarray) 439 bint PyArray_ISFLEXIBLE(ndarray) 440 bint PyArray_ISUSERDEF(ndarray) 441 bint PyArray_ISEXTENDED(ndarray) 442 bint PyArray_ISOBJECT(ndarray) 443 bint PyArray_HASFIELDS(ndarray) 444 445 bint PyArray_ISVARIABLE(ndarray) 446 447 bint PyArray_SAFEALIGNEDCOPY(ndarray) 448 bint PyArray_ISNBO(char) # works on ndarray.byteorder 449 bint PyArray_IsNativeByteOrder(char) # works on ndarray.byteorder 450 bint PyArray_ISNOTSWAPPED(ndarray) 451 bint PyArray_ISBYTESWAPPED(ndarray) 452 453 bint PyArray_FLAGSWAP(ndarray, int) 454 455 bint PyArray_ISCARRAY(ndarray) 456 bint PyArray_ISCARRAY_RO(ndarray) 457 bint PyArray_ISFARRAY(ndarray) 458 bint PyArray_ISFARRAY_RO(ndarray) 459 bint PyArray_ISBEHAVED(ndarray) 460 bint PyArray_ISBEHAVED_RO(ndarray) 461 462 463 bint PyDataType_ISNOTSWAPPED(dtype) 464 bint PyDataType_ISBYTESWAPPED(dtype) 465 466 bint PyArray_DescrCheck(object) 467 468 bint PyArray_Check(object) 469 bint PyArray_CheckExact(object) 470 471 # Cannot be supported due to out arg: 472 # bint PyArray_HasArrayInterfaceType(object, dtype, object, object&) 473 # bint PyArray_HasArrayInterface(op, out) 474 475 476 bint PyArray_IsZeroDim(object) 477 # Cannot be supported due to ## ## in macro: 478 # bint PyArray_IsScalar(object, verbatim work) 479 bint PyArray_CheckScalar(object) 480 bint PyArray_IsPythonNumber(object) 481 bint PyArray_IsPythonScalar(object) 482 bint PyArray_IsAnyScalar(object) 483 bint PyArray_CheckAnyScalar(object) 484 ndarray PyArray_GETCONTIGUOUS(ndarray) 485 bint PyArray_SAMESHAPE(ndarray, ndarray) 486 npy_intp PyArray_SIZE(ndarray) 487 npy_intp PyArray_NBYTES(ndarray) 488 489 object PyArray_FROM_O(object) 490 object PyArray_FROM_OF(object m, int flags) 491 object PyArray_FROM_OT(object m, int type) 492 object PyArray_FROM_OTF(object m, int type, int flags) 493 object PyArray_FROMANY(object m, int type, int min, int max, int flags) 494 object PyArray_ZEROS(int nd, npy_intp* dims, int type, int fortran) 495 object PyArray_EMPTY(int nd, npy_intp* dims, int type, int fortran) 496 void PyArray_FILLWBYTE(object, int val) 497 npy_intp PyArray_REFCOUNT(object) 498 object PyArray_ContiguousFromAny(op, int, int min_depth, int max_depth) 499 unsigned char PyArray_EquivArrTypes(ndarray a1, ndarray a2) 500 bint PyArray_EquivByteorders(int b1, int b2) 501 object PyArray_SimpleNew(int nd, npy_intp* dims, int typenum) 502 object PyArray_SimpleNewFromData(int nd, npy_intp* dims, int typenum, void* data) 503 #object PyArray_SimpleNewFromDescr(int nd, npy_intp* dims, dtype descr) 504 object PyArray_ToScalar(void* data, ndarray arr) 505 506 void* PyArray_GETPTR1(ndarray m, npy_intp i) 507 void* PyArray_GETPTR2(ndarray m, npy_intp i, npy_intp j) 508 void* PyArray_GETPTR3(ndarray m, npy_intp i, npy_intp j, npy_intp k) 509 void* PyArray_GETPTR4(ndarray m, npy_intp i, npy_intp j, npy_intp k, npy_intp l) 510 511 void PyArray_XDECREF_ERR(ndarray) 512 # Cannot be supported due to out arg 513 # void PyArray_DESCR_REPLACE(descr) 514 515 516 object PyArray_Copy(ndarray) 517 object PyArray_FromObject(object op, int type, int min_depth, int max_depth) 518 object PyArray_ContiguousFromObject(object op, int type, int min_depth, int max_depth) 519 object PyArray_CopyFromObject(object op, int type, int min_depth, int max_depth) 520 521 object PyArray_Cast(ndarray mp, int type_num) 522 object PyArray_Take(ndarray ap, object items, int axis) 523 object PyArray_Put(ndarray ap, object items, object values) 524 525 void PyArray_ITER_RESET(flatiter it) nogil 526 void PyArray_ITER_NEXT(flatiter it) nogil 527 void PyArray_ITER_GOTO(flatiter it, npy_intp* destination) nogil 528 void PyArray_ITER_GOTO1D(flatiter it, npy_intp ind) nogil 529 void* PyArray_ITER_DATA(flatiter it) nogil 530 bint PyArray_ITER_NOTDONE(flatiter it) nogil 531 532 void PyArray_MultiIter_RESET(broadcast multi) nogil 533 void PyArray_MultiIter_NEXT(broadcast multi) nogil 534 void PyArray_MultiIter_GOTO(broadcast multi, npy_intp dest) nogil 535 void PyArray_MultiIter_GOTO1D(broadcast multi, npy_intp ind) nogil 536 void* PyArray_MultiIter_DATA(broadcast multi, npy_intp i) nogil 537 void PyArray_MultiIter_NEXTi(broadcast multi, npy_intp i) nogil 538 bint PyArray_MultiIter_NOTDONE(broadcast multi) nogil 539 540 # Functions from __multiarray_api.h 541 542 # Functions taking dtype and returning object/ndarray are disabled 543 # for now as they steal dtype references. I'm conservative and disable 544 # more than is probably needed until it can be checked further. 545 int PyArray_SetNumericOps (object) 546 object PyArray_GetNumericOps () 547 int PyArray_INCREF (ndarray) 548 int PyArray_XDECREF (ndarray) 549 void PyArray_SetStringFunction (object, int) 550 dtype PyArray_DescrFromType (int) 551 object PyArray_TypeObjectFromType (int) 552 char * PyArray_Zero (ndarray) 553 char * PyArray_One (ndarray) 554 #object PyArray_CastToType (ndarray, dtype, int) 555 int PyArray_CastTo (ndarray, ndarray) 556 int PyArray_CastAnyTo (ndarray, ndarray) 557 int PyArray_CanCastSafely (int, int) 558 npy_bool PyArray_CanCastTo (dtype, dtype) 559 int PyArray_ObjectType (object, int) 560 dtype PyArray_DescrFromObject (object, dtype) 561 #ndarray* PyArray_ConvertToCommonType (object, int *) 562 dtype PyArray_DescrFromScalar (object) 563 dtype PyArray_DescrFromTypeObject (object) 564 npy_intp PyArray_Size (object) 565 #object PyArray_Scalar (void *, dtype, object) 566 #object PyArray_FromScalar (object, dtype) 567 void PyArray_ScalarAsCtype (object, void *) 568 #int PyArray_CastScalarToCtype (object, void *, dtype) 569 #int PyArray_CastScalarDirect (object, dtype, void *, int) 570 object PyArray_ScalarFromObject (object) 571 #PyArray_VectorUnaryFunc * PyArray_GetCastFunc (dtype, int) 572 object PyArray_FromDims (int, int *, int) 573 #object PyArray_FromDimsAndDataAndDescr (int, int *, dtype, char *) 574 #object PyArray_FromAny (object, dtype, int, int, int, object) 575 object PyArray_EnsureArray (object) 576 object PyArray_EnsureAnyArray (object) 577 #object PyArray_FromFile (stdio.FILE *, dtype, npy_intp, char *) 578 #object PyArray_FromString (char *, npy_intp, dtype, npy_intp, char *) 579 #object PyArray_FromBuffer (object, dtype, npy_intp, npy_intp) 580 #object PyArray_FromIter (object, dtype, npy_intp) 581 object PyArray_Return (ndarray) 582 #object PyArray_GetField (ndarray, dtype, int) 583 #int PyArray_SetField (ndarray, dtype, int, object) 584 object PyArray_Byteswap (ndarray, npy_bool) 585 object PyArray_Resize (ndarray, PyArray_Dims *, int, NPY_ORDER) 586 int PyArray_MoveInto (ndarray, ndarray) 587 int PyArray_CopyInto (ndarray, ndarray) 588 int PyArray_CopyAnyInto (ndarray, ndarray) 589 int PyArray_CopyObject (ndarray, object) 590 object PyArray_NewCopy (ndarray, NPY_ORDER) 591 object PyArray_ToList (ndarray) 592 object PyArray_ToString (ndarray, NPY_ORDER) 593 int PyArray_ToFile (ndarray, stdio.FILE *, char *, char *) 594 int PyArray_Dump (object, object, int) 595 object PyArray_Dumps (object, int) 596 int PyArray_ValidType (int) 597 void PyArray_UpdateFlags (ndarray, int) 598 object PyArray_New (type, int, npy_intp *, int, npy_intp *, void *, int, int, object) 599 #object PyArray_NewFromDescr (type, dtype, int, npy_intp *, npy_intp *, void *, int, object) 600 #dtype PyArray_DescrNew (dtype) 601 dtype PyArray_DescrNewFromType (int) 602 double PyArray_GetPriority (object, double) 603 object PyArray_IterNew (object) 604 object PyArray_MultiIterNew (int, ...) 605 606 int PyArray_PyIntAsInt (object) 607 npy_intp PyArray_PyIntAsIntp (object) 608 int PyArray_Broadcast (broadcast) 609 void PyArray_FillObjectArray (ndarray, object) 610 int PyArray_FillWithScalar (ndarray, object) 611 npy_bool PyArray_CheckStrides (int, int, npy_intp, npy_intp, npy_intp *, npy_intp *) 612 dtype PyArray_DescrNewByteorder (dtype, char) 613 object PyArray_IterAllButAxis (object, int *) 614 #object PyArray_CheckFromAny (object, dtype, int, int, int, object) 615 #object PyArray_FromArray (ndarray, dtype, int) 616 object PyArray_FromInterface (object) 617 object PyArray_FromStructInterface (object) 618 #object PyArray_FromArrayAttr (object, dtype, object) 619 #NPY_SCALARKIND PyArray_ScalarKind (int, ndarray*) 620 int PyArray_CanCoerceScalar (int, int, NPY_SCALARKIND) 621 object PyArray_NewFlagsObject (object) 622 npy_bool PyArray_CanCastScalar (type, type) 623 #int PyArray_CompareUCS4 (npy_ucs4 *, npy_ucs4 *, register size_t) 624 int PyArray_RemoveSmallest (broadcast) 625 int PyArray_ElementStrides (object) 626 void PyArray_Item_INCREF (char *, dtype) 627 void PyArray_Item_XDECREF (char *, dtype) 628 object PyArray_FieldNames (object) 629 object PyArray_Transpose (ndarray, PyArray_Dims *) 630 object PyArray_TakeFrom (ndarray, object, int, ndarray, NPY_CLIPMODE) 631 object PyArray_PutTo (ndarray, object, object, NPY_CLIPMODE) 632 object PyArray_PutMask (ndarray, object, object) 633 object PyArray_Repeat (ndarray, object, int) 634 object PyArray_Choose (ndarray, object, ndarray, NPY_CLIPMODE) 635 int PyArray_Sort (ndarray, int, NPY_SORTKIND) 636 object PyArray_ArgSort (ndarray, int, NPY_SORTKIND) 637 object PyArray_SearchSorted (ndarray, object, NPY_SEARCHSIDE) 638 object PyArray_ArgMax (ndarray, int, ndarray) 639 object PyArray_ArgMin (ndarray, int, ndarray) 640 object PyArray_Reshape (ndarray, object) 641 object PyArray_Newshape (ndarray, PyArray_Dims *, NPY_ORDER) 642 object PyArray_Squeeze (ndarray) 643 #object PyArray_View (ndarray, dtype, type) 644 object PyArray_SwapAxes (ndarray, int, int) 645 object PyArray_Max (ndarray, int, ndarray) 646 object PyArray_Min (ndarray, int, ndarray) 647 object PyArray_Ptp (ndarray, int, ndarray) 648 object PyArray_Mean (ndarray, int, int, ndarray) 649 object PyArray_Trace (ndarray, int, int, int, int, ndarray) 650 object PyArray_Diagonal (ndarray, int, int, int) 651 object PyArray_Clip (ndarray, object, object, ndarray) 652 object PyArray_Conjugate (ndarray, ndarray) 653 object PyArray_Nonzero (ndarray) 654 object PyArray_Std (ndarray, int, int, ndarray, int) 655 object PyArray_Sum (ndarray, int, int, ndarray) 656 object PyArray_CumSum (ndarray, int, int, ndarray) 657 object PyArray_Prod (ndarray, int, int, ndarray) 658 object PyArray_CumProd (ndarray, int, int, ndarray) 659 object PyArray_All (ndarray, int, ndarray) 660 object PyArray_Any (ndarray, int, ndarray) 661 object PyArray_Compress (ndarray, object, int, ndarray) 662 object PyArray_Flatten (ndarray, NPY_ORDER) 663 object PyArray_Ravel (ndarray, NPY_ORDER) 664 npy_intp PyArray_MultiplyList (npy_intp *, int) 665 int PyArray_MultiplyIntList (int *, int) 666 void * PyArray_GetPtr (ndarray, npy_intp*) 667 int PyArray_CompareLists (npy_intp *, npy_intp *, int) 668 #int PyArray_AsCArray (object*, void *, npy_intp *, int, dtype) 669 #int PyArray_As1D (object*, char **, int *, int) 670 #int PyArray_As2D (object*, char ***, int *, int *, int) 671 int PyArray_Free (object, void *) 672 #int PyArray_Converter (object, object*) 673 int PyArray_IntpFromSequence (object, npy_intp *, int) 674 object PyArray_Concatenate (object, int) 675 object PyArray_InnerProduct (object, object) 676 object PyArray_MatrixProduct (object, object) 677 object PyArray_CopyAndTranspose (object) 678 object PyArray_Correlate (object, object, int) 679 int PyArray_TypestrConvert (int, int) 680 #int PyArray_DescrConverter (object, dtype*) 681 #int PyArray_DescrConverter2 (object, dtype*) 682 int PyArray_IntpConverter (object, PyArray_Dims *) 683 #int PyArray_BufferConverter (object, chunk) 684 int PyArray_AxisConverter (object, int *) 685 int PyArray_BoolConverter (object, npy_bool *) 686 int PyArray_ByteorderConverter (object, char *) 687 int PyArray_OrderConverter (object, NPY_ORDER *) 688 unsigned char PyArray_EquivTypes (dtype, dtype) 689 #object PyArray_Zeros (int, npy_intp *, dtype, int) 690 #object PyArray_Empty (int, npy_intp *, dtype, int) 691 object PyArray_Where (object, object, object) 692 object PyArray_Arange (double, double, double, int) 693 #object PyArray_ArangeObj (object, object, object, dtype) 694 int PyArray_SortkindConverter (object, NPY_SORTKIND *) 695 object PyArray_LexSort (object, int) 696 object PyArray_Round (ndarray, int, ndarray) 697 unsigned char PyArray_EquivTypenums (int, int) 698 int PyArray_RegisterDataType (dtype) 699 int PyArray_RegisterCastFunc (dtype, int, PyArray_VectorUnaryFunc *) 700 int PyArray_RegisterCanCast (dtype, int, NPY_SCALARKIND) 701 #void PyArray_InitArrFuncs (PyArray_ArrFuncs *) 702 object PyArray_IntTupleFromIntp (int, npy_intp *) 703 int PyArray_TypeNumFromName (char *) 704 int PyArray_ClipmodeConverter (object, NPY_CLIPMODE *) 705 #int PyArray_OutputConverter (object, ndarray*) 706 object PyArray_BroadcastToShape (object, npy_intp *, int) 707 void _PyArray_SigintHandler (int) 708 void* _PyArray_GetSigintBuf () 709 #int PyArray_DescrAlignConverter (object, dtype*) 710 #int PyArray_DescrAlignConverter2 (object, dtype*) 711 int PyArray_SearchsideConverter (object, void *) 712 object PyArray_CheckAxis (ndarray, int *, int) 713 npy_intp PyArray_OverflowMultiplyList (npy_intp *, int) 714 int PyArray_CompareString (char *, char *, size_t) 715 716 717 # Typedefs that matches the runtime dtype objects in 718 # the numpy module. 719 720 # The ones that are commented out needs an IFDEF function 721 # in Cython to enable them only on the right systems. 722 723 ctypedef npy_int8 int8_t 724 ctypedef npy_int16 int16_t 725 ctypedef npy_int32 int32_t 726 ctypedef npy_int64 int64_t 727 #ctypedef npy_int96 int96_t 728 #ctypedef npy_int128 int128_t 729 730 ctypedef npy_uint8 uint8_t 731 ctypedef npy_uint16 uint16_t 732 ctypedef npy_uint32 uint32_t 733 ctypedef npy_uint64 uint64_t 734 #ctypedef npy_uint96 uint96_t 735 #ctypedef npy_uint128 uint128_t 736 737 ctypedef npy_float32 float32_t 738 ctypedef npy_float64 float64_t 739 #ctypedef npy_float80 float80_t 740 #ctypedef npy_float128 float128_t 741 742 ctypedef float complex complex64_t 743 ctypedef double complex complex128_t 744 745 # The int types are mapped a bit surprising -- 746 # numpy.int corresponds to 'l' and numpy.long to 'q' 747 ctypedef npy_long int_t 748 ctypedef npy_longlong long_t 749 ctypedef npy_longlong longlong_t 750 751 ctypedef npy_ulong uint_t 752 ctypedef npy_ulonglong ulong_t 753 ctypedef npy_ulonglong ulonglong_t 754 755 ctypedef npy_intp intp_t 756 ctypedef npy_uintp uintp_t 757 758 ctypedef npy_double float_t 759 ctypedef npy_double double_t 760 ctypedef npy_longdouble longdouble_t 761 762 ctypedef npy_cfloat cfloat_t 763 ctypedef npy_cdouble cdouble_t 764 ctypedef npy_clongdouble clongdouble_t 765 766 ctypedef npy_cdouble complex_t 767 768 cdef inline object PyArray_MultiIterNew1(a): 769 return PyArray_MultiIterNew(1, <void*>a) 770 771 cdef inline object PyArray_MultiIterNew2(a, b): 772 return PyArray_MultiIterNew(2, <void*>a, <void*>b) 773 774 cdef inline object PyArray_MultiIterNew3(a, b, c): 775 return PyArray_MultiIterNew(3, <void*>a, <void*>b, <void*> c) 776 777 cdef inline object PyArray_MultiIterNew4(a, b, c, d): 778 return PyArray_MultiIterNew(4, <void*>a, <void*>b, <void*>c, <void*> d) 779 780 cdef inline object PyArray_MultiIterNew5(a, b, c, d, e): 781 return PyArray_MultiIterNew(5, <void*>a, <void*>b, <void*>c, <void*> d, <void*> e) 782 783 cdef inline char* _util_dtypestring(dtype descr, char* f, char* end, int* offset) except NULL: 784 # Recursive utility function used in __getbuffer__ to get format 785 # string. The new location in the format string is returned. 786 787 cdef dtype child 788 cdef int delta_offset 789 cdef tuple i 790 cdef int endian_detector = 1 791 cdef bint little_endian = ((<char*>&endian_detector)[0] != 0) 792 cdef tuple fields 793 794 for childname in descr.names: 795 fields = descr.fields[childname] 796 child, new_offset = fields 797 798 if (end - f) - <int>(new_offset - offset[0]) < 15: 799 raise RuntimeError(u"Format string allocated too short, see comment in numpy.pxd") 800 801 if ((child.byteorder == c'>' and little_endian) or 802 (child.byteorder == c'<' and not little_endian)): 803 raise ValueError(u"Non-native byte order not supported") 804 # One could encode it in the format string and have Cython 805 # complain instead, BUT: < and > in format strings also imply 806 # standardized sizes for datatypes, and we rely on native in 807 # order to avoid reencoding data types based on their size. 808 # 809 # A proper PEP 3118 exporter for other clients than Cython 810 # must deal properly with this! 811 812 # Output padding bytes 813 while offset[0] < new_offset: 814 f[0] = 120 # "x"; pad byte 815 f += 1 816 offset[0] += 1 817 818 offset[0] += child.itemsize 819 820 if not PyDataType_HASFIELDS(child): 821 t = child.type_num 822 if end - f < 5: 823 raise RuntimeError(u"Format string allocated too short.") 824 825 # Until ticket #99 is fixed, use integers to avoid warnings 826 if t == NPY_BYTE: f[0] = 98 #"b" 827 elif t == NPY_UBYTE: f[0] = 66 #"B" 828 elif t == NPY_SHORT: f[0] = 104 #"h" 829 elif t == NPY_USHORT: f[0] = 72 #"H" 830 elif t == NPY_INT: f[0] = 105 #"i" 831 elif t == NPY_UINT: f[0] = 73 #"I" 832 elif t == NPY_LONG: f[0] = 108 #"l" 833 elif t == NPY_ULONG: f[0] = 76 #"L" 834 elif t == NPY_LONGLONG: f[0] = 113 #"q" 835 elif t == NPY_ULONGLONG: f[0] = 81 #"Q" 836 elif t == NPY_FLOAT: f[0] = 102 #"f" 837 elif t == NPY_DOUBLE: f[0] = 100 #"d" 838 elif t == NPY_LONGDOUBLE: f[0] = 103 #"g" 839 elif t == NPY_CFLOAT: f[0] = 90; f[1] = 102; f += 1 # Zf 840 elif t == NPY_CDOUBLE: f[0] = 90; f[1] = 100; f += 1 # Zd 841 elif t == NPY_CLONGDOUBLE: f[0] = 90; f[1] = 103; f += 1 # Zg 842 elif t == NPY_OBJECT: f[0] = 79 #"O" 843 else: 844 raise ValueError(u"unknown dtype code in numpy.pxd (%d)" % t) 845 f += 1 846 else: 847 # Cython ignores struct boundary information ("T{...}"), 848 # so don't output it 849 f = _util_dtypestring(child, f, end, offset) 850 return f 851 852 853 # 854 # ufunc API 855 # 856 857 cdef extern from "numpy/ufuncobject.h": 858 859 ctypedef void (*PyUFuncGenericFunction) (char **, npy_intp *, npy_intp *, void *) 860 861 ctypedef extern class numpy.ufunc [object PyUFuncObject]: 862 cdef: 863 int nin, nout, nargs 864 int identity 865 PyUFuncGenericFunction *functions 866 void **data 867 int ntypes 868 int check_return 869 char *name 870 char *types 871 char *doc 872 void *ptr 873 PyObject *obj 874 PyObject *userloops 875 876 cdef enum: 877 PyUFunc_Zero 878 PyUFunc_One 879 PyUFunc_None 880 UFUNC_ERR_IGNORE 881 UFUNC_ERR_WARN 882 UFUNC_ERR_RAISE 883 UFUNC_ERR_CALL 884 UFUNC_ERR_PRINT 885 UFUNC_ERR_LOG 886 UFUNC_MASK_DIVIDEBYZERO 887 UFUNC_MASK_OVERFLOW 888 UFUNC_MASK_UNDERFLOW 889 UFUNC_MASK_INVALID 890 UFUNC_SHIFT_DIVIDEBYZERO 891 UFUNC_SHIFT_OVERFLOW 892 UFUNC_SHIFT_UNDERFLOW 893 UFUNC_SHIFT_INVALID 894 UFUNC_FPE_DIVIDEBYZERO 895 UFUNC_FPE_OVERFLOW 896 UFUNC_FPE_UNDERFLOW 897 UFUNC_FPE_INVALID 898 UFUNC_ERR_DEFAULT 899 UFUNC_ERR_DEFAULT2 900 901 object PyUFunc_FromFuncAndData(PyUFuncGenericFunction *, 902 void **, char *, int, int, int, int, char *, char *, int) 903 int PyUFunc_RegisterLoopForType(ufunc, int, 904 PyUFuncGenericFunction, int *, void *) 905 int PyUFunc_GenericFunction \ 906 (ufunc, PyObject *, PyObject *, PyArrayObject **) 907 void PyUFunc_f_f_As_d_d \ 908 (char **, npy_intp *, npy_intp *, void *) 909 void PyUFunc_d_d \ 910 (char **, npy_intp *, npy_intp *, void *) 911 void PyUFunc_f_f \ 912 (char **, npy_intp *, npy_intp *, void *) 913 void PyUFunc_g_g \ 914 (char **, npy_intp *, npy_intp *, void *) 915 void PyUFunc_F_F_As_D_D \ 916 (char **, npy_intp *, npy_intp *, void *) 917 void PyUFunc_F_F \ 918 (char **, npy_intp *, npy_intp *, void *) 919 void PyUFunc_D_D \ 920 (char **, npy_intp *, npy_intp *, void *) 921 void PyUFunc_G_G \ 922 (char **, npy_intp *, npy_intp *, void *) 923 void PyUFunc_O_O \ 924 (char **, npy_intp *, npy_intp *, void *) 925 void PyUFunc_ff_f_As_dd_d \ 926 (char **, npy_intp *, npy_intp *, void *) 927 void PyUFunc_ff_f \ 928 (char **, npy_intp *, npy_intp *, void *) 929 void PyUFunc_dd_d \ 930 (char **, npy_intp *, npy_intp *, void *) 931 void PyUFunc_gg_g \ 932 (char **, npy_intp *, npy_intp *, void *) 933 void PyUFunc_FF_F_As_DD_D \ 934 (char **, npy_intp *, npy_intp *, void *) 935 void PyUFunc_DD_D \ 936 (char **, npy_intp *, npy_intp *, void *) 937 void PyUFunc_FF_F \ 938 (char **, npy_intp *, npy_intp *, void *) 939 void PyUFunc_GG_G \ 940 (char **, npy_intp *, npy_intp *, void *) 941 void PyUFunc_OO_O \ 942 (char **, npy_intp *, npy_intp *, void *) 943 void PyUFunc_O_O_method \ 944 (char **, npy_intp *, npy_intp *, void *) 945 void PyUFunc_OO_O_method \ 946 (char **, npy_intp *, npy_intp *, void *) 947 void PyUFunc_On_Om \ 948 (char **, npy_intp *, npy_intp *, void *) 949 int PyUFunc_GetPyValues \ 950 (char *, int *, int *, PyObject **) 951 int PyUFunc_checkfperr \ 952 (int, PyObject *, int *) 953 void PyUFunc_clearfperr() 954 int PyUFunc_getfperr() 955 int PyUFunc_handlefperr \ 956 (int, PyObject *, int, int *) 957 int PyUFunc_ReplaceLoopBySignature \ 958 (ufunc, PyUFuncGenericFunction, int *, PyUFuncGenericFunction *) 959 object PyUFunc_FromFuncAndDataAndSignature \ 960 (PyUFuncGenericFunction *, void **, char *, int, int, int, 961 int, char *, char *, int, char *) 962 963 void import_ufunc() 964 965 966 cdef inline void set_array_base(ndarray arr, object base): 967 cdef PyObject* baseptr 968 if base is None: 969 baseptr = NULL 970 else: 971 Py_INCREF(base) # important to do this before decref below! 972 baseptr = <PyObject*>base 973 Py_XDECREF(arr.base) 974 arr.base = baseptr 975 976 cdef inline object get_array_base(ndarray arr): 977 if arr.base is NULL: 978 return None 979 else: 980 return <object>arr.base 981
