Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2 | /* Integer object implementation */ |
| 3 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 5 | #include <ctype.h> |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 6 | |
Guido van Rossum | 2e1d433 | 1993-12-24 10:22:45 +0000 | [diff] [blame] | 7 | long |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 8 | PyInt_GetMax(void) |
Guido van Rossum | 2e1d433 | 1993-12-24 10:22:45 +0000 | [diff] [blame] | 9 | { |
| 10 | return LONG_MAX; /* To initialize sys.maxint */ |
| 11 | } |
| 12 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 13 | /* Standard Booleans */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 14 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 15 | PyIntObject _Py_ZeroStruct = { |
| 16 | PyObject_HEAD_INIT(&PyInt_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 17 | 0 |
| 18 | }; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 19 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 20 | PyIntObject _Py_TrueStruct = { |
| 21 | PyObject_HEAD_INIT(&PyInt_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 22 | 1 |
| 23 | }; |
| 24 | |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 25 | /* Return 1 if exception raised, 0 if caller should retry using longs */ |
| 26 | static int |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 27 | err_ovf(char *msg) |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 28 | { |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 29 | if (PyErr_Warn(PyExc_OverflowWarning, msg) < 0) { |
Guido van Rossum | 0b13116 | 2001-08-23 21:32:40 +0000 | [diff] [blame^] | 30 | if (PyErr_ExceptionMatches(PyExc_OverflowWarning)) |
| 31 | PyErr_SetString(PyExc_OverflowError, msg); |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 32 | return 1; |
| 33 | } |
| 34 | else |
| 35 | return 0; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 36 | } |
| 37 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 38 | /* Integers are quite normal objects, to make object handling uniform. |
| 39 | (Using odd pointers to represent integers would save much space |
| 40 | but require extra checks for this special case throughout the code.) |
| 41 | Since, a typical Python program spends much of its time allocating |
| 42 | and deallocating integers, these operations should be very fast. |
| 43 | Therefore we use a dedicated allocation scheme with a much lower |
| 44 | overhead (in space and time) than straight malloc(): a simple |
| 45 | dedicated free list, filled when necessary with memory from malloc(). |
| 46 | */ |
| 47 | |
| 48 | #define BLOCK_SIZE 1000 /* 1K less typical malloc overhead */ |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 49 | #define BHEAD_SIZE 8 /* Enough for a 64-bit pointer */ |
| 50 | #define N_INTOBJECTS ((BLOCK_SIZE - BHEAD_SIZE) / sizeof(PyIntObject)) |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 51 | |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 52 | struct _intblock { |
| 53 | struct _intblock *next; |
| 54 | PyIntObject objects[N_INTOBJECTS]; |
| 55 | }; |
| 56 | |
| 57 | typedef struct _intblock PyIntBlock; |
| 58 | |
| 59 | static PyIntBlock *block_list = NULL; |
| 60 | static PyIntObject *free_list = NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 61 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 62 | static PyIntObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 63 | fill_free_list(void) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 64 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 65 | PyIntObject *p, *q; |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 66 | /* XXX Int blocks escape the object heap. Use PyObject_MALLOC ??? */ |
| 67 | p = (PyIntObject *) PyMem_MALLOC(sizeof(PyIntBlock)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 68 | if (p == NULL) |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 69 | return (PyIntObject *) PyErr_NoMemory(); |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 70 | ((PyIntBlock *)p)->next = block_list; |
| 71 | block_list = (PyIntBlock *)p; |
| 72 | p = &((PyIntBlock *)p)->objects[0]; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 73 | q = p + N_INTOBJECTS; |
| 74 | while (--q > p) |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 75 | q->ob_type = (struct _typeobject *)(q-1); |
| 76 | q->ob_type = NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 77 | return p + N_INTOBJECTS - 1; |
| 78 | } |
| 79 | |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 80 | #ifndef NSMALLPOSINTS |
| 81 | #define NSMALLPOSINTS 100 |
| 82 | #endif |
| 83 | #ifndef NSMALLNEGINTS |
| 84 | #define NSMALLNEGINTS 1 |
| 85 | #endif |
| 86 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 87 | /* References to small integers are saved in this array so that they |
| 88 | can be shared. |
| 89 | The integers that are saved are those in the range |
| 90 | -NSMALLNEGINTS (inclusive) to NSMALLPOSINTS (not inclusive). |
| 91 | */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 92 | static PyIntObject *small_ints[NSMALLNEGINTS + NSMALLPOSINTS]; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 93 | #endif |
| 94 | #ifdef COUNT_ALLOCS |
| 95 | int quick_int_allocs, quick_neg_int_allocs; |
| 96 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 97 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 98 | PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 99 | PyInt_FromLong(long ival) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 100 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 101 | register PyIntObject *v; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 102 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 103 | if (-NSMALLNEGINTS <= ival && ival < NSMALLPOSINTS && |
| 104 | (v = small_ints[ival + NSMALLNEGINTS]) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 105 | Py_INCREF(v); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 106 | #ifdef COUNT_ALLOCS |
| 107 | if (ival >= 0) |
| 108 | quick_int_allocs++; |
| 109 | else |
| 110 | quick_neg_int_allocs++; |
| 111 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 112 | return (PyObject *) v; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 113 | } |
| 114 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 115 | if (free_list == NULL) { |
| 116 | if ((free_list = fill_free_list()) == NULL) |
| 117 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 118 | } |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 119 | /* PyObject_New is inlined */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 120 | v = free_list; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 121 | free_list = (PyIntObject *)v->ob_type; |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 122 | PyObject_INIT(v, &PyInt_Type); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 123 | v->ob_ival = ival; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 124 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 125 | if (-NSMALLNEGINTS <= ival && ival < NSMALLPOSINTS) { |
| 126 | /* save this one for a following allocation */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 127 | Py_INCREF(v); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 128 | small_ints[ival + NSMALLNEGINTS] = v; |
| 129 | } |
| 130 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 131 | return (PyObject *) v; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | static void |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 135 | int_dealloc(PyIntObject *v) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 136 | { |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 137 | v->ob_type = (struct _typeobject *)free_list; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 138 | free_list = v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | long |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 142 | PyInt_AsLong(register PyObject *op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 143 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 144 | PyNumberMethods *nb; |
| 145 | PyIntObject *io; |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 146 | long val; |
| 147 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 148 | if (op && PyInt_Check(op)) |
| 149 | return PyInt_AS_LONG((PyIntObject*) op); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 150 | |
| 151 | if (op == NULL || (nb = op->ob_type->tp_as_number) == NULL || |
| 152 | nb->nb_int == NULL) { |
Guido van Rossum | c18a6f4 | 2000-05-09 14:27:48 +0000 | [diff] [blame] | 153 | PyErr_SetString(PyExc_TypeError, "an integer is required"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 154 | return -1; |
| 155 | } |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 156 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 157 | io = (PyIntObject*) (*nb->nb_int) (op); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 158 | if (io == NULL) |
| 159 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 160 | if (!PyInt_Check(io)) { |
| 161 | PyErr_SetString(PyExc_TypeError, |
| 162 | "nb_int should return int object"); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 163 | return -1; |
| 164 | } |
| 165 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 166 | val = PyInt_AS_LONG(io); |
| 167 | Py_DECREF(io); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 168 | |
| 169 | return val; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 170 | } |
| 171 | |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 172 | PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 173 | PyInt_FromString(char *s, char **pend, int base) |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 174 | { |
| 175 | char *end; |
| 176 | long x; |
| 177 | char buffer[256]; /* For errors */ |
| 178 | |
| 179 | if ((base != 0 && base < 2) || base > 36) { |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 180 | PyErr_SetString(PyExc_ValueError, "int() base must be >= 2 and <= 36"); |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 181 | return NULL; |
| 182 | } |
| 183 | |
| 184 | while (*s && isspace(Py_CHARMASK(*s))) |
| 185 | s++; |
| 186 | errno = 0; |
| 187 | if (base == 0 && s[0] == '0') |
| 188 | x = (long) PyOS_strtoul(s, &end, base); |
| 189 | else |
| 190 | x = PyOS_strtol(s, &end, base); |
Martin v. Löwis | 2b6727b | 2001-03-06 12:12:02 +0000 | [diff] [blame] | 191 | if (end == s || !isalnum(Py_CHARMASK(end[-1]))) |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 192 | goto bad; |
| 193 | while (*end && isspace(Py_CHARMASK(*end))) |
| 194 | end++; |
| 195 | if (*end != '\0') { |
| 196 | bad: |
| 197 | sprintf(buffer, "invalid literal for int(): %.200s", s); |
| 198 | PyErr_SetString(PyExc_ValueError, buffer); |
| 199 | return NULL; |
| 200 | } |
| 201 | else if (errno != 0) { |
| 202 | sprintf(buffer, "int() literal too large: %.200s", s); |
| 203 | PyErr_SetString(PyExc_ValueError, buffer); |
| 204 | return NULL; |
| 205 | } |
| 206 | if (pend) |
| 207 | *pend = end; |
| 208 | return PyInt_FromLong(x); |
| 209 | } |
| 210 | |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 211 | #ifdef Py_USING_UNICODE |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 212 | PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 213 | PyInt_FromUnicode(Py_UNICODE *s, int length, int base) |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 214 | { |
| 215 | char buffer[256]; |
| 216 | |
| 217 | if (length >= sizeof(buffer)) { |
| 218 | PyErr_SetString(PyExc_ValueError, |
| 219 | "int() literal too large to convert"); |
| 220 | return NULL; |
| 221 | } |
| 222 | if (PyUnicode_EncodeDecimal(s, length, buffer, NULL)) |
| 223 | return NULL; |
| 224 | return PyInt_FromString(buffer, NULL, base); |
| 225 | } |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 226 | #endif |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 227 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 228 | /* Methods */ |
| 229 | |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 230 | /* Integers are seen as the "smallest" of all numeric types and thus |
| 231 | don't have any knowledge about conversion of other types to |
| 232 | integers. */ |
| 233 | |
| 234 | #define CONVERT_TO_LONG(obj, lng) \ |
| 235 | if (PyInt_Check(obj)) { \ |
| 236 | lng = PyInt_AS_LONG(obj); \ |
| 237 | } \ |
| 238 | else { \ |
| 239 | Py_INCREF(Py_NotImplemented); \ |
| 240 | return Py_NotImplemented; \ |
| 241 | } |
| 242 | |
Guido van Rossum | 719f5fa | 1992-03-27 17:31:02 +0000 | [diff] [blame] | 243 | /* ARGSUSED */ |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 244 | static int |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 245 | int_print(PyIntObject *v, FILE *fp, int flags) |
| 246 | /* flags -- not used but required by interface */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 247 | { |
| 248 | fprintf(fp, "%ld", v->ob_ival); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 249 | return 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 250 | } |
| 251 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 252 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 253 | int_repr(PyIntObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 254 | { |
| 255 | char buf[20]; |
| 256 | sprintf(buf, "%ld", v->ob_ival); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 257 | return PyString_FromString(buf); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | static int |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 261 | int_compare(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 262 | { |
| 263 | register long i = v->ob_ival; |
| 264 | register long j = w->ob_ival; |
| 265 | return (i < j) ? -1 : (i > j) ? 1 : 0; |
| 266 | } |
| 267 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 268 | static long |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 269 | int_hash(PyIntObject *v) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 270 | { |
Guido van Rossum | 541cdd8 | 1997-01-06 22:53:20 +0000 | [diff] [blame] | 271 | /* XXX If this is changed, you also need to change the way |
| 272 | Python's long, float and complex types are hashed. */ |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 273 | long x = v -> ob_ival; |
| 274 | if (x == -1) |
| 275 | x = -2; |
| 276 | return x; |
| 277 | } |
| 278 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 279 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 280 | int_add(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 281 | { |
| 282 | register long a, b, x; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 283 | CONVERT_TO_LONG(v, a); |
| 284 | CONVERT_TO_LONG(w, b); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 285 | x = a + b; |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 286 | if ((x^a) >= 0 || (x^b) >= 0) |
| 287 | return PyInt_FromLong(x); |
| 288 | if (err_ovf("integer addition")) |
| 289 | return NULL; |
| 290 | return PyLong_Type.tp_as_number->nb_add((PyObject *)v, (PyObject *)w); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 291 | } |
| 292 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 293 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 294 | int_sub(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 295 | { |
| 296 | register long a, b, x; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 297 | CONVERT_TO_LONG(v, a); |
| 298 | CONVERT_TO_LONG(w, b); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 299 | x = a - b; |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 300 | if ((x^a) >= 0 || (x^~b) >= 0) |
| 301 | return PyInt_FromLong(x); |
| 302 | if (err_ovf("integer subtraction")) |
| 303 | return NULL; |
| 304 | return PyLong_Type.tp_as_number->nb_subtract((PyObject *)v, |
| 305 | (PyObject *)w); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 306 | } |
| 307 | |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 308 | /* |
| 309 | Integer overflow checking used to be done using a double, but on 64 |
| 310 | bit machines (where both long and double are 64 bit) this fails |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame] | 311 | because the double doesn't have enough precision. John Tromp suggests |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 312 | the following algorithm: |
| 313 | |
| 314 | Suppose again we normalize a and b to be nonnegative. |
| 315 | Let ah and al (bh and bl) be the high and low 32 bits of a (b, resp.). |
| 316 | Now we test ah and bh against zero and get essentially 3 possible outcomes. |
| 317 | |
| 318 | 1) both ah and bh > 0 : then report overflow |
| 319 | |
| 320 | 2) both ah and bh = 0 : then compute a*b and report overflow if it comes out |
| 321 | negative |
| 322 | |
| 323 | 3) ah > 0 and bh = 0 : compute ah*bl and report overflow if it's >= 2^31 |
| 324 | compute al*bl and report overflow if it's negative |
| 325 | add (ah*bl)<<32 to al*bl and report overflow if |
| 326 | it's negative |
| 327 | |
| 328 | In case of no overflow the result is then negated if necessary. |
| 329 | |
| 330 | The majority of cases will be 2), in which case this method is the same as |
| 331 | what I suggested before. If multiplication is expensive enough, then the |
| 332 | other method is faster on case 3), but also more work to program, so I |
| 333 | guess the above is the preferred solution. |
| 334 | |
| 335 | */ |
| 336 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 337 | static PyObject * |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 338 | int_mul(PyObject *v, PyObject *w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 339 | { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 340 | long a, b, ah, bh, x, y; |
| 341 | int s = 1; |
| 342 | |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 343 | if (v->ob_type->tp_as_sequence && |
| 344 | v->ob_type->tp_as_sequence->sq_repeat) { |
| 345 | /* sequence * int */ |
| 346 | a = PyInt_AsLong(w); |
| 347 | return (*v->ob_type->tp_as_sequence->sq_repeat)(v, a); |
| 348 | } |
| 349 | else if (w->ob_type->tp_as_sequence && |
| 350 | w->ob_type->tp_as_sequence->sq_repeat) { |
| 351 | /* int * sequence */ |
| 352 | a = PyInt_AsLong(v); |
| 353 | return (*w->ob_type->tp_as_sequence->sq_repeat)(w, a); |
| 354 | } |
| 355 | |
| 356 | CONVERT_TO_LONG(v, a); |
| 357 | CONVERT_TO_LONG(w, b); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 358 | ah = a >> (LONG_BIT/2); |
| 359 | bh = b >> (LONG_BIT/2); |
| 360 | |
| 361 | /* Quick test for common case: two small positive ints */ |
| 362 | |
| 363 | if (ah == 0 && bh == 0) { |
| 364 | x = a*b; |
| 365 | if (x < 0) |
| 366 | goto bad; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 367 | return PyInt_FromLong(x); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | /* Arrange that a >= b >= 0 */ |
| 371 | |
| 372 | if (a < 0) { |
| 373 | a = -a; |
| 374 | if (a < 0) { |
| 375 | /* Largest negative */ |
| 376 | if (b == 0 || b == 1) { |
| 377 | x = a*b; |
| 378 | goto ok; |
| 379 | } |
| 380 | else |
| 381 | goto bad; |
| 382 | } |
| 383 | s = -s; |
| 384 | ah = a >> (LONG_BIT/2); |
| 385 | } |
| 386 | if (b < 0) { |
| 387 | b = -b; |
| 388 | if (b < 0) { |
| 389 | /* Largest negative */ |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 390 | if (a == 0 || (a == 1 && s == 1)) { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 391 | x = a*b; |
| 392 | goto ok; |
| 393 | } |
| 394 | else |
| 395 | goto bad; |
| 396 | } |
| 397 | s = -s; |
| 398 | bh = b >> (LONG_BIT/2); |
| 399 | } |
| 400 | |
| 401 | /* 1) both ah and bh > 0 : then report overflow */ |
| 402 | |
| 403 | if (ah != 0 && bh != 0) |
| 404 | goto bad; |
| 405 | |
| 406 | /* 2) both ah and bh = 0 : then compute a*b and report |
| 407 | overflow if it comes out negative */ |
| 408 | |
| 409 | if (ah == 0 && bh == 0) { |
| 410 | x = a*b; |
| 411 | if (x < 0) |
| 412 | goto bad; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 413 | return PyInt_FromLong(x*s); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | if (a < b) { |
| 417 | /* Swap */ |
| 418 | x = a; |
| 419 | a = b; |
| 420 | b = x; |
| 421 | ah = bh; |
| 422 | /* bh not used beyond this point */ |
| 423 | } |
| 424 | |
| 425 | /* 3) ah > 0 and bh = 0 : compute ah*bl and report overflow if |
| 426 | it's >= 2^31 |
| 427 | compute al*bl and report overflow if it's negative |
| 428 | add (ah*bl)<<32 to al*bl and report overflow if |
| 429 | it's negative |
| 430 | (NB b == bl in this case, and we make a = al) */ |
| 431 | |
| 432 | y = ah*b; |
Guido van Rossum | 541cdd8 | 1997-01-06 22:53:20 +0000 | [diff] [blame] | 433 | if (y >= (1L << (LONG_BIT/2 - 1))) |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 434 | goto bad; |
| 435 | a &= (1L << (LONG_BIT/2)) - 1; |
| 436 | x = a*b; |
| 437 | if (x < 0) |
| 438 | goto bad; |
Guido van Rossum | 541cdd8 | 1997-01-06 22:53:20 +0000 | [diff] [blame] | 439 | x += y << (LONG_BIT/2); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 440 | if (x < 0) |
| 441 | goto bad; |
| 442 | ok: |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 443 | return PyInt_FromLong(x * s); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 444 | |
| 445 | bad: |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 446 | if (err_ovf("integer multiplication")) |
| 447 | return NULL; |
| 448 | return PyLong_Type.tp_as_number->nb_multiply(v, w); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 449 | } |
| 450 | |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 451 | /* Return type of i_divmod */ |
| 452 | enum divmod_result { |
| 453 | DIVMOD_OK, /* Correct result */ |
| 454 | DIVMOD_OVERFLOW, /* Overflow, try again using longs */ |
| 455 | DIVMOD_ERROR /* Exception raised */ |
| 456 | }; |
| 457 | |
| 458 | static enum divmod_result |
Tim Peters | 1dad6a8 | 2001-06-18 19:21:11 +0000 | [diff] [blame] | 459 | i_divmod(register long x, register long y, |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 460 | long *p_xdivy, long *p_xmody) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 461 | { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 462 | long xdivy, xmody; |
| 463 | |
Tim Peters | 1dad6a8 | 2001-06-18 19:21:11 +0000 | [diff] [blame] | 464 | if (y == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 465 | PyErr_SetString(PyExc_ZeroDivisionError, |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 466 | "integer division or modulo by zero"); |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 467 | return DIVMOD_ERROR; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 468 | } |
Tim Peters | 1dad6a8 | 2001-06-18 19:21:11 +0000 | [diff] [blame] | 469 | /* (-sys.maxint-1)/-1 is the only overflow case. */ |
| 470 | if (y == -1 && x < 0 && x == -x) { |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 471 | if (err_ovf("integer division")) |
| 472 | return DIVMOD_ERROR; |
| 473 | return DIVMOD_OVERFLOW; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 474 | } |
Tim Peters | 1dad6a8 | 2001-06-18 19:21:11 +0000 | [diff] [blame] | 475 | xdivy = x / y; |
| 476 | xmody = x - xdivy * y; |
| 477 | /* If the signs of x and y differ, and the remainder is non-0, |
| 478 | * C89 doesn't define whether xdivy is now the floor or the |
| 479 | * ceiling of the infinitely precise quotient. We want the floor, |
| 480 | * and we have it iff the remainder's sign matches y's. |
| 481 | */ |
| 482 | if (xmody && ((y ^ xmody) < 0) /* i.e. and signs differ */) { |
| 483 | xmody += y; |
| 484 | --xdivy; |
| 485 | assert(xmody && ((y ^ xmody) >= 0)); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 486 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 487 | *p_xdivy = xdivy; |
| 488 | *p_xmody = xmody; |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 489 | return DIVMOD_OK; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 490 | } |
| 491 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 492 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 493 | int_div(PyIntObject *x, PyIntObject *y) |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 494 | { |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 495 | long xi, yi; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 496 | long d, m; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 497 | CONVERT_TO_LONG(x, xi); |
| 498 | CONVERT_TO_LONG(y, yi); |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 499 | switch (i_divmod(xi, yi, &d, &m)) { |
| 500 | case DIVMOD_OK: |
| 501 | return PyInt_FromLong(d); |
| 502 | case DIVMOD_OVERFLOW: |
| 503 | return PyLong_Type.tp_as_number->nb_divide((PyObject *)x, |
| 504 | (PyObject *)y); |
| 505 | default: |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 506 | return NULL; |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 507 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 508 | } |
| 509 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 510 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 511 | int_mod(PyIntObject *x, PyIntObject *y) |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 512 | { |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 513 | long xi, yi; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 514 | long d, m; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 515 | CONVERT_TO_LONG(x, xi); |
| 516 | CONVERT_TO_LONG(y, yi); |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 517 | switch (i_divmod(xi, yi, &d, &m)) { |
| 518 | case DIVMOD_OK: |
| 519 | return PyInt_FromLong(m); |
| 520 | case DIVMOD_OVERFLOW: |
| 521 | return PyLong_Type.tp_as_number->nb_remainder((PyObject *)x, |
| 522 | (PyObject *)y); |
| 523 | default: |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 524 | return NULL; |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 525 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 526 | } |
| 527 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 528 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 529 | int_divmod(PyIntObject *x, PyIntObject *y) |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 530 | { |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 531 | long xi, yi; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 532 | long d, m; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 533 | CONVERT_TO_LONG(x, xi); |
| 534 | CONVERT_TO_LONG(y, yi); |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 535 | switch (i_divmod(xi, yi, &d, &m)) { |
| 536 | case DIVMOD_OK: |
| 537 | return Py_BuildValue("(ll)", d, m); |
| 538 | case DIVMOD_OVERFLOW: |
| 539 | return PyLong_Type.tp_as_number->nb_divmod((PyObject *)x, |
| 540 | (PyObject *)y); |
| 541 | default: |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 542 | return NULL; |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 543 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 544 | } |
| 545 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 546 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 547 | int_pow(PyIntObject *v, PyIntObject *w, PyIntObject *z) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 548 | { |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 549 | register long iv, iw, iz=0, ix, temp, prev; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 550 | CONVERT_TO_LONG(v, iv); |
| 551 | CONVERT_TO_LONG(w, iw); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 552 | if (iw < 0) { |
Guido van Rossum | b82fedc | 2001-07-12 11:19:45 +0000 | [diff] [blame] | 553 | /* Return a float. This works because we know that |
| 554 | this calls float_pow() which converts its |
| 555 | arguments to double. */ |
| 556 | return PyFloat_Type.tp_as_number->nb_power( |
| 557 | (PyObject *)v, (PyObject *)w, (PyObject *)z); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 558 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 559 | if ((PyObject *)z != Py_None) { |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 560 | CONVERT_TO_LONG(z, iz); |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 561 | if (iz == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 562 | PyErr_SetString(PyExc_ValueError, |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 563 | "pow() arg 3 cannot be 0"); |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 564 | return NULL; |
| 565 | } |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 566 | } |
| 567 | /* |
| 568 | * XXX: The original exponentiation code stopped looping |
| 569 | * when temp hit zero; this code will continue onwards |
| 570 | * unnecessarily, but at least it won't cause any errors. |
| 571 | * Hopefully the speed improvement from the fast exponentiation |
| 572 | * will compensate for the slight inefficiency. |
| 573 | * XXX: Better handling of overflows is desperately needed. |
| 574 | */ |
| 575 | temp = iv; |
| 576 | ix = 1; |
| 577 | while (iw > 0) { |
| 578 | prev = ix; /* Save value for overflow check */ |
| 579 | if (iw & 1) { |
| 580 | ix = ix*temp; |
| 581 | if (temp == 0) |
| 582 | break; /* Avoid ix / 0 */ |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 583 | if (ix / temp != prev) { |
| 584 | if (err_ovf("integer exponentiation")) |
| 585 | return NULL; |
| 586 | return PyLong_Type.tp_as_number->nb_power( |
| 587 | (PyObject *)v, |
| 588 | (PyObject *)w, |
Tim Peters | 31960db | 2001-08-23 21:28:33 +0000 | [diff] [blame] | 589 | (PyObject *)z); |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 590 | } |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 591 | } |
| 592 | iw >>= 1; /* Shift exponent down by 1 bit */ |
| 593 | if (iw==0) break; |
| 594 | prev = temp; |
| 595 | temp *= temp; /* Square the value of temp */ |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 596 | if (prev!=0 && temp/prev!=prev) { |
| 597 | if (err_ovf("integer exponentiation")) |
| 598 | return NULL; |
| 599 | return PyLong_Type.tp_as_number->nb_power( |
| 600 | (PyObject *)v, (PyObject *)w, (PyObject *)z); |
| 601 | } |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 602 | if (iz) { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 603 | /* If we did a multiplication, perform a modulo */ |
| 604 | ix = ix % iz; |
| 605 | temp = temp % iz; |
| 606 | } |
| 607 | } |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 608 | if (iz) { |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 609 | long div, mod; |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 610 | switch (i_divmod(ix, iz, &div, &mod)) { |
| 611 | case DIVMOD_OK: |
| 612 | ix = mod; |
| 613 | break; |
| 614 | case DIVMOD_OVERFLOW: |
| 615 | return PyLong_Type.tp_as_number->nb_power( |
| 616 | (PyObject *)v, (PyObject *)w, (PyObject *)z); |
| 617 | default: |
| 618 | return NULL; |
| 619 | } |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 620 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 621 | return PyInt_FromLong(ix); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 622 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 623 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 624 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 625 | int_neg(PyIntObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 626 | { |
| 627 | register long a, x; |
| 628 | a = v->ob_ival; |
| 629 | x = -a; |
Guido van Rossum | e27f795 | 2001-08-23 02:59:04 +0000 | [diff] [blame] | 630 | if (a < 0 && x < 0) { |
| 631 | if (err_ovf("integer negation")) |
| 632 | return NULL; |
| 633 | return PyNumber_Negative(PyLong_FromLong(a)); |
| 634 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 635 | return PyInt_FromLong(x); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 636 | } |
| 637 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 638 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 639 | int_pos(PyIntObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 640 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 641 | Py_INCREF(v); |
| 642 | return (PyObject *)v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 643 | } |
| 644 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 645 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 646 | int_abs(PyIntObject *v) |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 647 | { |
| 648 | if (v->ob_ival >= 0) |
| 649 | return int_pos(v); |
| 650 | else |
| 651 | return int_neg(v); |
| 652 | } |
| 653 | |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 654 | static int |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 655 | int_nonzero(PyIntObject *v) |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 656 | { |
| 657 | return v->ob_ival != 0; |
| 658 | } |
| 659 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 660 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 661 | int_invert(PyIntObject *v) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 662 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 663 | return PyInt_FromLong(~v->ob_ival); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 664 | } |
| 665 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 666 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 667 | int_lshift(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 668 | { |
| 669 | register long a, b; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 670 | CONVERT_TO_LONG(v, a); |
| 671 | CONVERT_TO_LONG(w, b); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 672 | if (b < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 673 | PyErr_SetString(PyExc_ValueError, "negative shift count"); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 674 | return NULL; |
| 675 | } |
| 676 | if (a == 0 || b == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 677 | Py_INCREF(v); |
| 678 | return (PyObject *) v; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 679 | } |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 680 | if (b >= LONG_BIT) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 681 | return PyInt_FromLong(0L); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 682 | } |
Fred Drake | 1bc8fab | 2001-07-19 21:49:38 +0000 | [diff] [blame] | 683 | a = (long)((unsigned long)a << b); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 684 | return PyInt_FromLong(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 685 | } |
| 686 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 687 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 688 | int_rshift(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 689 | { |
| 690 | register long a, b; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 691 | CONVERT_TO_LONG(v, a); |
| 692 | CONVERT_TO_LONG(w, b); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 693 | if (b < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 694 | PyErr_SetString(PyExc_ValueError, "negative shift count"); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 695 | return NULL; |
| 696 | } |
| 697 | if (a == 0 || b == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 698 | Py_INCREF(v); |
| 699 | return (PyObject *) v; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 700 | } |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 701 | if (b >= LONG_BIT) { |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 702 | if (a < 0) |
| 703 | a = -1; |
| 704 | else |
| 705 | a = 0; |
| 706 | } |
| 707 | else { |
Tim Peters | 7d3a511 | 2000-07-08 04:17:21 +0000 | [diff] [blame] | 708 | a = Py_ARITHMETIC_RIGHT_SHIFT(long, a, b); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 709 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 710 | return PyInt_FromLong(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 711 | } |
| 712 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 713 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 714 | int_and(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 715 | { |
| 716 | register long a, b; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 717 | CONVERT_TO_LONG(v, a); |
| 718 | CONVERT_TO_LONG(w, b); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 719 | return PyInt_FromLong(a & b); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 720 | } |
| 721 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 722 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 723 | int_xor(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 724 | { |
| 725 | register long a, b; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 726 | CONVERT_TO_LONG(v, a); |
| 727 | CONVERT_TO_LONG(w, b); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 728 | return PyInt_FromLong(a ^ b); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 729 | } |
| 730 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 731 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 732 | int_or(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 733 | { |
| 734 | register long a, b; |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 735 | CONVERT_TO_LONG(v, a); |
| 736 | CONVERT_TO_LONG(w, b); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 737 | return PyInt_FromLong(a | b); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 738 | } |
| 739 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 740 | static PyObject * |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 741 | int_true_divide(PyObject *v, PyObject *w) |
| 742 | { |
| 743 | return PyFloat_Type.tp_as_number->nb_divide(v, w); |
| 744 | } |
| 745 | |
| 746 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 747 | int_int(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 748 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 749 | Py_INCREF(v); |
| 750 | return (PyObject *)v; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 751 | } |
| 752 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 753 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 754 | int_long(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 755 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 756 | return PyLong_FromLong((v -> ob_ival)); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 757 | } |
| 758 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 759 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 760 | int_float(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 761 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 762 | return PyFloat_FromDouble((double)(v -> ob_ival)); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 763 | } |
| 764 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 765 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 766 | int_oct(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 767 | { |
Guido van Rossum | 6f72f97 | 1997-01-14 15:43:41 +0000 | [diff] [blame] | 768 | char buf[100]; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 769 | long x = v -> ob_ival; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 770 | if (x == 0) |
| 771 | strcpy(buf, "0"); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 772 | else |
Guido van Rossum | ebee025 | 1997-01-12 19:48:03 +0000 | [diff] [blame] | 773 | sprintf(buf, "0%lo", x); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 774 | return PyString_FromString(buf); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 775 | } |
| 776 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 777 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 778 | int_hex(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 779 | { |
Guido van Rossum | 6f72f97 | 1997-01-14 15:43:41 +0000 | [diff] [blame] | 780 | char buf[100]; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 781 | long x = v -> ob_ival; |
Guido van Rossum | ebee025 | 1997-01-12 19:48:03 +0000 | [diff] [blame] | 782 | sprintf(buf, "0x%lx", x); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 783 | return PyString_FromString(buf); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 784 | } |
| 785 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 786 | static PyObject * |
| 787 | int_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 788 | { |
| 789 | PyObject *x = NULL; |
| 790 | int base = -909; |
| 791 | static char *kwlist[] = {"x", "base", 0}; |
| 792 | |
| 793 | assert(type == &PyInt_Type); |
| 794 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "|Oi:int", kwlist, |
| 795 | &x, &base)) |
| 796 | return NULL; |
| 797 | if (x == NULL) |
| 798 | return PyInt_FromLong(0L); |
| 799 | if (base == -909) |
| 800 | return PyNumber_Int(x); |
| 801 | if (PyString_Check(x)) |
| 802 | return PyInt_FromString(PyString_AS_STRING(x), NULL, base); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 803 | #ifdef Py_USING_UNICODE |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 804 | if (PyUnicode_Check(x)) |
| 805 | return PyInt_FromUnicode(PyUnicode_AS_UNICODE(x), |
| 806 | PyUnicode_GET_SIZE(x), |
| 807 | base); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 808 | #endif |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 809 | PyErr_SetString(PyExc_TypeError, |
| 810 | "int() can't convert non-string with explicit base"); |
| 811 | return NULL; |
| 812 | } |
| 813 | |
| 814 | static char int_doc[] = |
| 815 | "int(x[, base]) -> integer\n\ |
| 816 | \n\ |
| 817 | Convert a string or number to an integer, if possible. A floating point\n\ |
| 818 | argument will be truncated towards zero (this does not include a string\n\ |
| 819 | representation of a floating point number!) When converting a string, use\n\ |
| 820 | the optional base. It is an error to supply a base when converting a\n\ |
| 821 | non-string."; |
| 822 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 823 | static PyNumberMethods int_as_number = { |
Neil Schemenauer | 139e72a | 2001-01-04 01:45:33 +0000 | [diff] [blame] | 824 | (binaryfunc)int_add, /*nb_add*/ |
| 825 | (binaryfunc)int_sub, /*nb_subtract*/ |
| 826 | (binaryfunc)int_mul, /*nb_multiply*/ |
| 827 | (binaryfunc)int_div, /*nb_divide*/ |
| 828 | (binaryfunc)int_mod, /*nb_remainder*/ |
| 829 | (binaryfunc)int_divmod, /*nb_divmod*/ |
| 830 | (ternaryfunc)int_pow, /*nb_power*/ |
| 831 | (unaryfunc)int_neg, /*nb_negative*/ |
| 832 | (unaryfunc)int_pos, /*nb_positive*/ |
| 833 | (unaryfunc)int_abs, /*nb_absolute*/ |
| 834 | (inquiry)int_nonzero, /*nb_nonzero*/ |
| 835 | (unaryfunc)int_invert, /*nb_invert*/ |
| 836 | (binaryfunc)int_lshift, /*nb_lshift*/ |
| 837 | (binaryfunc)int_rshift, /*nb_rshift*/ |
| 838 | (binaryfunc)int_and, /*nb_and*/ |
| 839 | (binaryfunc)int_xor, /*nb_xor*/ |
| 840 | (binaryfunc)int_or, /*nb_or*/ |
| 841 | 0, /*nb_coerce*/ |
| 842 | (unaryfunc)int_int, /*nb_int*/ |
| 843 | (unaryfunc)int_long, /*nb_long*/ |
| 844 | (unaryfunc)int_float, /*nb_float*/ |
| 845 | (unaryfunc)int_oct, /*nb_oct*/ |
| 846 | (unaryfunc)int_hex, /*nb_hex*/ |
| 847 | 0, /*nb_inplace_add*/ |
| 848 | 0, /*nb_inplace_subtract*/ |
| 849 | 0, /*nb_inplace_multiply*/ |
| 850 | 0, /*nb_inplace_divide*/ |
| 851 | 0, /*nb_inplace_remainder*/ |
| 852 | 0, /*nb_inplace_power*/ |
| 853 | 0, /*nb_inplace_lshift*/ |
| 854 | 0, /*nb_inplace_rshift*/ |
| 855 | 0, /*nb_inplace_and*/ |
| 856 | 0, /*nb_inplace_xor*/ |
| 857 | 0, /*nb_inplace_or*/ |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 858 | (binaryfunc)int_div, /* nb_floor_divide */ |
| 859 | int_true_divide, /* nb_true_divide */ |
| 860 | 0, /* nb_inplace_floor_divide */ |
| 861 | 0, /* nb_inplace_true_divide */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 862 | }; |
| 863 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 864 | PyTypeObject PyInt_Type = { |
| 865 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 866 | 0, |
| 867 | "int", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 868 | sizeof(PyIntObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 869 | 0, |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 870 | (destructor)int_dealloc, /* tp_dealloc */ |
| 871 | (printfunc)int_print, /* tp_print */ |
| 872 | 0, /* tp_getattr */ |
| 873 | 0, /* tp_setattr */ |
| 874 | (cmpfunc)int_compare, /* tp_compare */ |
| 875 | (reprfunc)int_repr, /* tp_repr */ |
| 876 | &int_as_number, /* tp_as_number */ |
| 877 | 0, /* tp_as_sequence */ |
| 878 | 0, /* tp_as_mapping */ |
| 879 | (hashfunc)int_hash, /* tp_hash */ |
| 880 | 0, /* tp_call */ |
| 881 | 0, /* tp_str */ |
| 882 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 883 | 0, /* tp_setattro */ |
| 884 | 0, /* tp_as_buffer */ |
| 885 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_CHECKTYPES, /* tp_flags */ |
| 886 | int_doc, /* tp_doc */ |
| 887 | 0, /* tp_traverse */ |
| 888 | 0, /* tp_clear */ |
| 889 | 0, /* tp_richcompare */ |
| 890 | 0, /* tp_weaklistoffset */ |
| 891 | 0, /* tp_iter */ |
| 892 | 0, /* tp_iternext */ |
| 893 | 0, /* tp_methods */ |
| 894 | 0, /* tp_members */ |
| 895 | 0, /* tp_getset */ |
| 896 | 0, /* tp_base */ |
| 897 | 0, /* tp_dict */ |
| 898 | 0, /* tp_descr_get */ |
| 899 | 0, /* tp_descr_set */ |
| 900 | 0, /* tp_dictoffset */ |
| 901 | 0, /* tp_init */ |
| 902 | 0, /* tp_alloc */ |
| 903 | int_new, /* tp_new */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 904 | }; |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 905 | |
| 906 | void |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 907 | PyInt_Fini(void) |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 908 | { |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 909 | PyIntObject *p; |
| 910 | PyIntBlock *list, *next; |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 911 | int i; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 912 | int bc, bf; /* block count, number of freed blocks */ |
| 913 | int irem, isum; /* remaining unfreed ints per block, total */ |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 914 | |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 915 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 916 | PyIntObject **q; |
| 917 | |
| 918 | i = NSMALLNEGINTS + NSMALLPOSINTS; |
| 919 | q = small_ints; |
| 920 | while (--i >= 0) { |
| 921 | Py_XDECREF(*q); |
| 922 | *q++ = NULL; |
| 923 | } |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 924 | #endif |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 925 | bc = 0; |
| 926 | bf = 0; |
| 927 | isum = 0; |
| 928 | list = block_list; |
| 929 | block_list = NULL; |
Guido van Rossum | 51288bc | 1999-03-19 20:30:39 +0000 | [diff] [blame] | 930 | free_list = NULL; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 931 | while (list != NULL) { |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 932 | bc++; |
| 933 | irem = 0; |
Guido van Rossum | 51288bc | 1999-03-19 20:30:39 +0000 | [diff] [blame] | 934 | for (i = 0, p = &list->objects[0]; |
| 935 | i < N_INTOBJECTS; |
| 936 | i++, p++) { |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 937 | if (PyInt_Check(p) && p->ob_refcnt != 0) |
| 938 | irem++; |
| 939 | } |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 940 | next = list->next; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 941 | if (irem) { |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 942 | list->next = block_list; |
| 943 | block_list = list; |
Guido van Rossum | 51288bc | 1999-03-19 20:30:39 +0000 | [diff] [blame] | 944 | for (i = 0, p = &list->objects[0]; |
| 945 | i < N_INTOBJECTS; |
| 946 | i++, p++) { |
| 947 | if (!PyInt_Check(p) || p->ob_refcnt == 0) { |
| 948 | p->ob_type = (struct _typeobject *) |
| 949 | free_list; |
| 950 | free_list = p; |
| 951 | } |
| 952 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 953 | else if (-NSMALLNEGINTS <= p->ob_ival && |
| 954 | p->ob_ival < NSMALLPOSINTS && |
| 955 | small_ints[p->ob_ival + |
| 956 | NSMALLNEGINTS] == NULL) { |
| 957 | Py_INCREF(p); |
| 958 | small_ints[p->ob_ival + |
| 959 | NSMALLNEGINTS] = p; |
| 960 | } |
| 961 | #endif |
| 962 | } |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 963 | } |
| 964 | else { |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 965 | PyMem_FREE(list); /* XXX PyObject_FREE ??? */ |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 966 | bf++; |
| 967 | } |
| 968 | isum += irem; |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 969 | list = next; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 970 | } |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 971 | if (!Py_VerboseFlag) |
| 972 | return; |
| 973 | fprintf(stderr, "# cleanup ints"); |
| 974 | if (!isum) { |
| 975 | fprintf(stderr, "\n"); |
| 976 | } |
| 977 | else { |
| 978 | fprintf(stderr, |
| 979 | ": %d unfreed int%s in %d out of %d block%s\n", |
| 980 | isum, isum == 1 ? "" : "s", |
| 981 | bc - bf, bc, bc == 1 ? "" : "s"); |
| 982 | } |
| 983 | if (Py_VerboseFlag > 1) { |
| 984 | list = block_list; |
| 985 | while (list != NULL) { |
Guido van Rossum | 51288bc | 1999-03-19 20:30:39 +0000 | [diff] [blame] | 986 | for (i = 0, p = &list->objects[0]; |
| 987 | i < N_INTOBJECTS; |
| 988 | i++, p++) { |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 989 | if (PyInt_Check(p) && p->ob_refcnt != 0) |
| 990 | fprintf(stderr, |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 991 | "# <int at %p, refcnt=%d, val=%ld>\n", |
| 992 | p, p->ob_refcnt, p->ob_ival); |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 993 | } |
| 994 | list = list->next; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 995 | } |
| 996 | } |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 997 | } |