Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | fd71b9e | 2000-06-30 23:50:40 +0000 | [diff] [blame] | 2 | Copyright (c) 2000, BeOpen.com. |
| 3 | Copyright (c) 1995-2000, Corporation for National Research Initiatives. |
| 4 | Copyright (c) 1990-1995, Stichting Mathematisch Centrum. |
| 5 | All rights reserved. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 6 | |
Guido van Rossum | fd71b9e | 2000-06-30 23:50:40 +0000 | [diff] [blame] | 7 | See the file "Misc/COPYRIGHT" for information on usage and |
| 8 | redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 9 | ******************************************************************/ |
| 10 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 11 | /* Integer object implementation */ |
| 12 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 13 | #include "Python.h" |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 14 | #include <ctype.h> |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 15 | |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 16 | #ifdef HAVE_LIMITS_H |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 17 | #include <limits.h> |
| 18 | #endif |
| 19 | |
| 20 | #ifndef LONG_MAX |
| 21 | #define LONG_MAX 0X7FFFFFFFL |
| 22 | #endif |
| 23 | |
| 24 | #ifndef LONG_MIN |
| 25 | #define LONG_MIN (-LONG_MAX-1) |
| 26 | #endif |
| 27 | |
| 28 | #ifndef CHAR_BIT |
| 29 | #define CHAR_BIT 8 |
| 30 | #endif |
| 31 | |
Guido van Rossum | b376a4a | 1993-11-23 17:53:17 +0000 | [diff] [blame] | 32 | #ifndef LONG_BIT |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 33 | #define LONG_BIT (CHAR_BIT * sizeof(long)) |
Guido van Rossum | b376a4a | 1993-11-23 17:53:17 +0000 | [diff] [blame] | 34 | #endif |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 35 | |
Guido van Rossum | 2e1d433 | 1993-12-24 10:22:45 +0000 | [diff] [blame] | 36 | long |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 37 | PyInt_GetMax(void) |
Guido van Rossum | 2e1d433 | 1993-12-24 10:22:45 +0000 | [diff] [blame] | 38 | { |
| 39 | return LONG_MAX; /* To initialize sys.maxint */ |
| 40 | } |
| 41 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 42 | /* Standard Booleans */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 43 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 44 | PyIntObject _Py_ZeroStruct = { |
| 45 | PyObject_HEAD_INIT(&PyInt_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 46 | 0 |
| 47 | }; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 48 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 49 | PyIntObject _Py_TrueStruct = { |
| 50 | PyObject_HEAD_INIT(&PyInt_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 51 | 1 |
| 52 | }; |
| 53 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 54 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 55 | err_ovf(char *msg) |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 56 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 57 | PyErr_SetString(PyExc_OverflowError, msg); |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 58 | return NULL; |
| 59 | } |
| 60 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 61 | /* Integers are quite normal objects, to make object handling uniform. |
| 62 | (Using odd pointers to represent integers would save much space |
| 63 | but require extra checks for this special case throughout the code.) |
| 64 | Since, a typical Python program spends much of its time allocating |
| 65 | and deallocating integers, these operations should be very fast. |
| 66 | Therefore we use a dedicated allocation scheme with a much lower |
| 67 | overhead (in space and time) than straight malloc(): a simple |
| 68 | dedicated free list, filled when necessary with memory from malloc(). |
| 69 | */ |
| 70 | |
| 71 | #define BLOCK_SIZE 1000 /* 1K less typical malloc overhead */ |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 72 | #define BHEAD_SIZE 8 /* Enough for a 64-bit pointer */ |
| 73 | #define N_INTOBJECTS ((BLOCK_SIZE - BHEAD_SIZE) / sizeof(PyIntObject)) |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 74 | |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 75 | struct _intblock { |
| 76 | struct _intblock *next; |
| 77 | PyIntObject objects[N_INTOBJECTS]; |
| 78 | }; |
| 79 | |
| 80 | typedef struct _intblock PyIntBlock; |
| 81 | |
| 82 | static PyIntBlock *block_list = NULL; |
| 83 | static PyIntObject *free_list = NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 84 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 85 | static PyIntObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 86 | fill_free_list(void) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 87 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 88 | PyIntObject *p, *q; |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 89 | /* XXX Int blocks escape the object heap. Use PyObject_MALLOC ??? */ |
| 90 | p = (PyIntObject *) PyMem_MALLOC(sizeof(PyIntBlock)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 91 | if (p == NULL) |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 92 | return (PyIntObject *) PyErr_NoMemory(); |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 93 | ((PyIntBlock *)p)->next = block_list; |
| 94 | block_list = (PyIntBlock *)p; |
| 95 | p = &((PyIntBlock *)p)->objects[0]; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 96 | q = p + N_INTOBJECTS; |
| 97 | while (--q > p) |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 98 | q->ob_type = (struct _typeobject *)(q-1); |
| 99 | q->ob_type = NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 100 | return p + N_INTOBJECTS - 1; |
| 101 | } |
| 102 | |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 103 | #ifndef NSMALLPOSINTS |
| 104 | #define NSMALLPOSINTS 100 |
| 105 | #endif |
| 106 | #ifndef NSMALLNEGINTS |
| 107 | #define NSMALLNEGINTS 1 |
| 108 | #endif |
| 109 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 110 | /* References to small integers are saved in this array so that they |
| 111 | can be shared. |
| 112 | The integers that are saved are those in the range |
| 113 | -NSMALLNEGINTS (inclusive) to NSMALLPOSINTS (not inclusive). |
| 114 | */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 115 | static PyIntObject *small_ints[NSMALLNEGINTS + NSMALLPOSINTS]; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 116 | #endif |
| 117 | #ifdef COUNT_ALLOCS |
| 118 | int quick_int_allocs, quick_neg_int_allocs; |
| 119 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 120 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 121 | PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 122 | PyInt_FromLong(long ival) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 123 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 124 | register PyIntObject *v; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 125 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 126 | if (-NSMALLNEGINTS <= ival && ival < NSMALLPOSINTS && |
| 127 | (v = small_ints[ival + NSMALLNEGINTS]) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 128 | Py_INCREF(v); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 129 | #ifdef COUNT_ALLOCS |
| 130 | if (ival >= 0) |
| 131 | quick_int_allocs++; |
| 132 | else |
| 133 | quick_neg_int_allocs++; |
| 134 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 135 | return (PyObject *) v; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 136 | } |
| 137 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 138 | if (free_list == NULL) { |
| 139 | if ((free_list = fill_free_list()) == NULL) |
| 140 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 141 | } |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 142 | /* PyObject_New is inlined */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 143 | v = free_list; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 144 | free_list = (PyIntObject *)v->ob_type; |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 145 | PyObject_INIT(v, &PyInt_Type); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 146 | v->ob_ival = ival; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 147 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 148 | if (-NSMALLNEGINTS <= ival && ival < NSMALLPOSINTS) { |
| 149 | /* save this one for a following allocation */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 150 | Py_INCREF(v); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 151 | small_ints[ival + NSMALLNEGINTS] = v; |
| 152 | } |
| 153 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 154 | return (PyObject *) v; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | static void |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 158 | int_dealloc(PyIntObject *v) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 159 | { |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 160 | v->ob_type = (struct _typeobject *)free_list; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 161 | free_list = v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | long |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 165 | PyInt_AsLong(register PyObject *op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 166 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 167 | PyNumberMethods *nb; |
| 168 | PyIntObject *io; |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 169 | long val; |
| 170 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 171 | if (op && PyInt_Check(op)) |
| 172 | return PyInt_AS_LONG((PyIntObject*) op); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 173 | |
| 174 | if (op == NULL || (nb = op->ob_type->tp_as_number) == NULL || |
| 175 | nb->nb_int == NULL) { |
Guido van Rossum | c18a6f4 | 2000-05-09 14:27:48 +0000 | [diff] [blame] | 176 | PyErr_SetString(PyExc_TypeError, "an integer is required"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 177 | return -1; |
| 178 | } |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 179 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 180 | io = (PyIntObject*) (*nb->nb_int) (op); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 181 | if (io == NULL) |
| 182 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 183 | if (!PyInt_Check(io)) { |
| 184 | PyErr_SetString(PyExc_TypeError, |
| 185 | "nb_int should return int object"); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 186 | return -1; |
| 187 | } |
| 188 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 189 | val = PyInt_AS_LONG(io); |
| 190 | Py_DECREF(io); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 191 | |
| 192 | return val; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 193 | } |
| 194 | |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 195 | PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 196 | PyInt_FromString(char *s, char **pend, int base) |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 197 | { |
| 198 | char *end; |
| 199 | long x; |
| 200 | char buffer[256]; /* For errors */ |
| 201 | |
| 202 | if ((base != 0 && base < 2) || base > 36) { |
| 203 | PyErr_SetString(PyExc_ValueError, "invalid base for int()"); |
| 204 | return NULL; |
| 205 | } |
| 206 | |
| 207 | while (*s && isspace(Py_CHARMASK(*s))) |
| 208 | s++; |
| 209 | errno = 0; |
| 210 | if (base == 0 && s[0] == '0') |
| 211 | x = (long) PyOS_strtoul(s, &end, base); |
| 212 | else |
| 213 | x = PyOS_strtol(s, &end, base); |
| 214 | if (end == s || !isalnum(end[-1])) |
| 215 | goto bad; |
| 216 | while (*end && isspace(Py_CHARMASK(*end))) |
| 217 | end++; |
| 218 | if (*end != '\0') { |
| 219 | bad: |
| 220 | sprintf(buffer, "invalid literal for int(): %.200s", s); |
| 221 | PyErr_SetString(PyExc_ValueError, buffer); |
| 222 | return NULL; |
| 223 | } |
| 224 | else if (errno != 0) { |
| 225 | sprintf(buffer, "int() literal too large: %.200s", s); |
| 226 | PyErr_SetString(PyExc_ValueError, buffer); |
| 227 | return NULL; |
| 228 | } |
| 229 | if (pend) |
| 230 | *pend = end; |
| 231 | return PyInt_FromLong(x); |
| 232 | } |
| 233 | |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 234 | PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 235 | PyInt_FromUnicode(Py_UNICODE *s, int length, int base) |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 236 | { |
| 237 | char buffer[256]; |
| 238 | |
| 239 | if (length >= sizeof(buffer)) { |
| 240 | PyErr_SetString(PyExc_ValueError, |
| 241 | "int() literal too large to convert"); |
| 242 | return NULL; |
| 243 | } |
| 244 | if (PyUnicode_EncodeDecimal(s, length, buffer, NULL)) |
| 245 | return NULL; |
| 246 | return PyInt_FromString(buffer, NULL, base); |
| 247 | } |
| 248 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 249 | /* Methods */ |
| 250 | |
Guido van Rossum | 719f5fa | 1992-03-27 17:31:02 +0000 | [diff] [blame] | 251 | /* ARGSUSED */ |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 252 | static int |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 253 | int_print(PyIntObject *v, FILE *fp, int flags) |
| 254 | /* flags -- not used but required by interface */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 255 | { |
| 256 | fprintf(fp, "%ld", v->ob_ival); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 257 | return 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 258 | } |
| 259 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 260 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 261 | int_repr(PyIntObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 262 | { |
| 263 | char buf[20]; |
| 264 | sprintf(buf, "%ld", v->ob_ival); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 265 | return PyString_FromString(buf); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | static int |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 269 | int_compare(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 270 | { |
| 271 | register long i = v->ob_ival; |
| 272 | register long j = w->ob_ival; |
| 273 | return (i < j) ? -1 : (i > j) ? 1 : 0; |
| 274 | } |
| 275 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 276 | static long |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 277 | int_hash(PyIntObject *v) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 278 | { |
Guido van Rossum | 541cdd8 | 1997-01-06 22:53:20 +0000 | [diff] [blame] | 279 | /* XXX If this is changed, you also need to change the way |
| 280 | Python's long, float and complex types are hashed. */ |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 281 | long x = v -> ob_ival; |
| 282 | if (x == -1) |
| 283 | x = -2; |
| 284 | return x; |
| 285 | } |
| 286 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 287 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 288 | int_add(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 289 | { |
| 290 | register long a, b, x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 291 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 292 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 293 | x = a + b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 294 | if ((x^a) < 0 && (x^b) < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 295 | return err_ovf("integer addition"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 296 | return PyInt_FromLong(x); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 297 | } |
| 298 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 299 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 300 | int_sub(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 301 | { |
| 302 | register long a, b, x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 303 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 304 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 305 | x = a - b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 306 | if ((x^a) < 0 && (x^~b) < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 307 | return err_ovf("integer subtraction"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 308 | return PyInt_FromLong(x); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 309 | } |
| 310 | |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 311 | /* |
| 312 | Integer overflow checking used to be done using a double, but on 64 |
| 313 | bit machines (where both long and double are 64 bit) this fails |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame] | 314 | because the double doesn't have enough precision. John Tromp suggests |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 315 | the following algorithm: |
| 316 | |
| 317 | Suppose again we normalize a and b to be nonnegative. |
| 318 | Let ah and al (bh and bl) be the high and low 32 bits of a (b, resp.). |
| 319 | Now we test ah and bh against zero and get essentially 3 possible outcomes. |
| 320 | |
| 321 | 1) both ah and bh > 0 : then report overflow |
| 322 | |
| 323 | 2) both ah and bh = 0 : then compute a*b and report overflow if it comes out |
| 324 | negative |
| 325 | |
| 326 | 3) ah > 0 and bh = 0 : compute ah*bl and report overflow if it's >= 2^31 |
| 327 | compute al*bl and report overflow if it's negative |
| 328 | add (ah*bl)<<32 to al*bl and report overflow if |
| 329 | it's negative |
| 330 | |
| 331 | In case of no overflow the result is then negated if necessary. |
| 332 | |
| 333 | The majority of cases will be 2), in which case this method is the same as |
| 334 | what I suggested before. If multiplication is expensive enough, then the |
| 335 | other method is faster on case 3), but also more work to program, so I |
| 336 | guess the above is the preferred solution. |
| 337 | |
| 338 | */ |
| 339 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 340 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 341 | int_mul(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 342 | { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 343 | long a, b, ah, bh, x, y; |
| 344 | int s = 1; |
| 345 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 346 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 347 | b = w->ob_ival; |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 348 | ah = a >> (LONG_BIT/2); |
| 349 | bh = b >> (LONG_BIT/2); |
| 350 | |
| 351 | /* Quick test for common case: two small positive ints */ |
| 352 | |
| 353 | if (ah == 0 && bh == 0) { |
| 354 | x = a*b; |
| 355 | if (x < 0) |
| 356 | goto bad; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 357 | return PyInt_FromLong(x); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | /* Arrange that a >= b >= 0 */ |
| 361 | |
| 362 | if (a < 0) { |
| 363 | a = -a; |
| 364 | if (a < 0) { |
| 365 | /* Largest negative */ |
| 366 | if (b == 0 || b == 1) { |
| 367 | x = a*b; |
| 368 | goto ok; |
| 369 | } |
| 370 | else |
| 371 | goto bad; |
| 372 | } |
| 373 | s = -s; |
| 374 | ah = a >> (LONG_BIT/2); |
| 375 | } |
| 376 | if (b < 0) { |
| 377 | b = -b; |
| 378 | if (b < 0) { |
| 379 | /* Largest negative */ |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 380 | if (a == 0 || (a == 1 && s == 1)) { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 381 | x = a*b; |
| 382 | goto ok; |
| 383 | } |
| 384 | else |
| 385 | goto bad; |
| 386 | } |
| 387 | s = -s; |
| 388 | bh = b >> (LONG_BIT/2); |
| 389 | } |
| 390 | |
| 391 | /* 1) both ah and bh > 0 : then report overflow */ |
| 392 | |
| 393 | if (ah != 0 && bh != 0) |
| 394 | goto bad; |
| 395 | |
| 396 | /* 2) both ah and bh = 0 : then compute a*b and report |
| 397 | overflow if it comes out negative */ |
| 398 | |
| 399 | if (ah == 0 && bh == 0) { |
| 400 | x = a*b; |
| 401 | if (x < 0) |
| 402 | goto bad; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 403 | return PyInt_FromLong(x*s); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | if (a < b) { |
| 407 | /* Swap */ |
| 408 | x = a; |
| 409 | a = b; |
| 410 | b = x; |
| 411 | ah = bh; |
| 412 | /* bh not used beyond this point */ |
| 413 | } |
| 414 | |
| 415 | /* 3) ah > 0 and bh = 0 : compute ah*bl and report overflow if |
| 416 | it's >= 2^31 |
| 417 | compute al*bl and report overflow if it's negative |
| 418 | add (ah*bl)<<32 to al*bl and report overflow if |
| 419 | it's negative |
| 420 | (NB b == bl in this case, and we make a = al) */ |
| 421 | |
| 422 | y = ah*b; |
Guido van Rossum | 541cdd8 | 1997-01-06 22:53:20 +0000 | [diff] [blame] | 423 | if (y >= (1L << (LONG_BIT/2 - 1))) |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 424 | goto bad; |
| 425 | a &= (1L << (LONG_BIT/2)) - 1; |
| 426 | x = a*b; |
| 427 | if (x < 0) |
| 428 | goto bad; |
Guido van Rossum | 541cdd8 | 1997-01-06 22:53:20 +0000 | [diff] [blame] | 429 | x += y << (LONG_BIT/2); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 430 | if (x < 0) |
| 431 | goto bad; |
| 432 | ok: |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 433 | return PyInt_FromLong(x * s); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 434 | |
| 435 | bad: |
| 436 | return err_ovf("integer multiplication"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 437 | } |
| 438 | |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 439 | static int |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 440 | i_divmod(register PyIntObject *x, register PyIntObject *y, |
| 441 | long *p_xdivy, long *p_xmody) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 442 | { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 443 | long xi = x->ob_ival; |
| 444 | long yi = y->ob_ival; |
| 445 | long xdivy, xmody; |
| 446 | |
| 447 | if (yi == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 448 | PyErr_SetString(PyExc_ZeroDivisionError, |
| 449 | "integer division or modulo"); |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 450 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 451 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 452 | if (yi < 0) { |
Guido van Rossum | e13ff2e | 1999-09-27 17:12:47 +0000 | [diff] [blame] | 453 | if (xi < 0) { |
| 454 | if (yi == -1 && -xi < 0) { |
| 455 | /* most negative / -1 */ |
| 456 | err_ovf("integer division"); |
| 457 | return -1; |
| 458 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 459 | xdivy = -xi / -yi; |
Guido van Rossum | e13ff2e | 1999-09-27 17:12:47 +0000 | [diff] [blame] | 460 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 461 | else |
| 462 | xdivy = - (xi / -yi); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 463 | } |
| 464 | else { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 465 | if (xi < 0) |
| 466 | xdivy = - (-xi / yi); |
| 467 | else |
| 468 | xdivy = xi / yi; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 469 | } |
| 470 | xmody = xi - xdivy*yi; |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 471 | if ((xmody < 0 && yi > 0) || (xmody > 0 && yi < 0)) { |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 472 | xmody += yi; |
| 473 | xdivy -= 1; |
| 474 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 475 | *p_xdivy = xdivy; |
| 476 | *p_xmody = xmody; |
| 477 | return 0; |
| 478 | } |
| 479 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 480 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 481 | int_div(PyIntObject *x, PyIntObject *y) |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 482 | { |
| 483 | long d, m; |
| 484 | if (i_divmod(x, y, &d, &m) < 0) |
| 485 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 486 | return PyInt_FromLong(d); |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 487 | } |
| 488 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 489 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 490 | int_mod(PyIntObject *x, PyIntObject *y) |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 491 | { |
| 492 | long d, m; |
| 493 | if (i_divmod(x, y, &d, &m) < 0) |
| 494 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 495 | return PyInt_FromLong(m); |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 496 | } |
| 497 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 498 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 499 | int_divmod(PyIntObject *x, PyIntObject *y) |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 500 | { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 501 | long d, m; |
| 502 | if (i_divmod(x, y, &d, &m) < 0) |
| 503 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 504 | return Py_BuildValue("(ll)", d, m); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 505 | } |
| 506 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 507 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 508 | int_pow(PyIntObject *v, PyIntObject *w, PyIntObject *z) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 509 | { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 510 | #if 1 |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 511 | register long iv, iw, iz=0, ix, temp, prev; |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 512 | iv = v->ob_ival; |
| 513 | iw = w->ob_ival; |
| 514 | if (iw < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 515 | PyErr_SetString(PyExc_ValueError, |
| 516 | "integer to the negative power"); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 517 | return NULL; |
| 518 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 519 | if ((PyObject *)z != Py_None) { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 520 | iz = z->ob_ival; |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 521 | if (iz == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 522 | PyErr_SetString(PyExc_ValueError, |
| 523 | "pow(x, y, z) with z==0"); |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 524 | return NULL; |
| 525 | } |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 526 | } |
| 527 | /* |
| 528 | * XXX: The original exponentiation code stopped looping |
| 529 | * when temp hit zero; this code will continue onwards |
| 530 | * unnecessarily, but at least it won't cause any errors. |
| 531 | * Hopefully the speed improvement from the fast exponentiation |
| 532 | * will compensate for the slight inefficiency. |
| 533 | * XXX: Better handling of overflows is desperately needed. |
| 534 | */ |
| 535 | temp = iv; |
| 536 | ix = 1; |
| 537 | while (iw > 0) { |
| 538 | prev = ix; /* Save value for overflow check */ |
| 539 | if (iw & 1) { |
| 540 | ix = ix*temp; |
| 541 | if (temp == 0) |
| 542 | break; /* Avoid ix / 0 */ |
| 543 | if (ix / temp != prev) |
Guido van Rossum | fb4574e | 2000-02-15 14:51:46 +0000 | [diff] [blame] | 544 | return err_ovf("integer exponentiation"); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 545 | } |
| 546 | iw >>= 1; /* Shift exponent down by 1 bit */ |
| 547 | if (iw==0) break; |
| 548 | prev = temp; |
| 549 | temp *= temp; /* Square the value of temp */ |
| 550 | if (prev!=0 && temp/prev!=prev) |
Guido van Rossum | fb4574e | 2000-02-15 14:51:46 +0000 | [diff] [blame] | 551 | return err_ovf("integer exponentiation"); |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 552 | if (iz) { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 553 | /* If we did a multiplication, perform a modulo */ |
| 554 | ix = ix % iz; |
| 555 | temp = temp % iz; |
| 556 | } |
| 557 | } |
Guido van Rossum | 9478dd4 | 1996-12-06 20:14:43 +0000 | [diff] [blame] | 558 | if (iz) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 559 | PyObject *t1, *t2; |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 560 | long int div, mod; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 561 | t1=PyInt_FromLong(ix); |
| 562 | t2=PyInt_FromLong(iz); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 563 | if (t1==NULL || t2==NULL || |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 564 | i_divmod((PyIntObject *)t1, |
| 565 | (PyIntObject *)t2, &div, &mod)<0) |
| 566 | { |
| 567 | Py_XDECREF(t1); |
| 568 | Py_XDECREF(t2); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 569 | return(NULL); |
| 570 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 571 | Py_DECREF(t1); |
| 572 | Py_DECREF(t2); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 573 | ix=mod; |
| 574 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 575 | return PyInt_FromLong(ix); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 576 | #else |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 577 | register long iv, iw, ix; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 578 | iv = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 579 | iw = w->ob_ival; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 580 | if (iw < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 581 | PyErr_SetString(PyExc_ValueError, |
| 582 | "integer to the negative power"); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 583 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 584 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 585 | if ((PyObject *)z != Py_None) { |
| 586 | PyErr_SetString(PyExc_TypeError, |
| 587 | "pow(int, int, int) not yet supported"); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 588 | return NULL; |
| 589 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 590 | ix = 1; |
| 591 | while (--iw >= 0) { |
| 592 | long prev = ix; |
| 593 | ix = ix * iv; |
| 594 | if (iv == 0) |
| 595 | break; /* 0 to some power -- avoid ix / 0 */ |
| 596 | if (ix / iv != prev) |
Guido van Rossum | fb4574e | 2000-02-15 14:51:46 +0000 | [diff] [blame] | 597 | return err_ovf("integer exponentiation"); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 598 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 599 | return PyInt_FromLong(ix); |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 600 | #endif |
| 601 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 602 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 603 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 604 | int_neg(PyIntObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 605 | { |
| 606 | register long a, x; |
| 607 | a = v->ob_ival; |
| 608 | x = -a; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 609 | if (a < 0 && x < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 610 | return err_ovf("integer negation"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 611 | return PyInt_FromLong(x); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 612 | } |
| 613 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 614 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 615 | int_pos(PyIntObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 616 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 617 | Py_INCREF(v); |
| 618 | return (PyObject *)v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 619 | } |
| 620 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 621 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 622 | int_abs(PyIntObject *v) |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 623 | { |
| 624 | if (v->ob_ival >= 0) |
| 625 | return int_pos(v); |
| 626 | else |
| 627 | return int_neg(v); |
| 628 | } |
| 629 | |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 630 | static int |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 631 | int_nonzero(PyIntObject *v) |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 632 | { |
| 633 | return v->ob_ival != 0; |
| 634 | } |
| 635 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 636 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 637 | int_invert(PyIntObject *v) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 638 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 639 | return PyInt_FromLong(~v->ob_ival); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 640 | } |
| 641 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 642 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 643 | int_lshift(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 644 | { |
| 645 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 646 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 647 | b = w->ob_ival; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 648 | if (b < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 649 | PyErr_SetString(PyExc_ValueError, "negative shift count"); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 650 | return NULL; |
| 651 | } |
| 652 | if (a == 0 || b == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 653 | Py_INCREF(v); |
| 654 | return (PyObject *) v; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 655 | } |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 656 | if (b >= LONG_BIT) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 657 | return PyInt_FromLong(0L); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 658 | } |
| 659 | a = (unsigned long)a << b; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 660 | return PyInt_FromLong(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 661 | } |
| 662 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 663 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 664 | int_rshift(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 665 | { |
| 666 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 667 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 668 | b = w->ob_ival; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 669 | if (b < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 670 | PyErr_SetString(PyExc_ValueError, "negative shift count"); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 671 | return NULL; |
| 672 | } |
| 673 | if (a == 0 || b == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 674 | Py_INCREF(v); |
| 675 | return (PyObject *) v; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 676 | } |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 677 | if (b >= LONG_BIT) { |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 678 | if (a < 0) |
| 679 | a = -1; |
| 680 | else |
| 681 | a = 0; |
| 682 | } |
| 683 | else { |
Tim Peters | 7d3a511 | 2000-07-08 04:17:21 +0000 | [diff] [blame] | 684 | a = Py_ARITHMETIC_RIGHT_SHIFT(long, a, b); |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 685 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 686 | return PyInt_FromLong(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 687 | } |
| 688 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 689 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 690 | int_and(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 691 | { |
| 692 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 693 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 694 | b = w->ob_ival; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 695 | return PyInt_FromLong(a & b); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 696 | } |
| 697 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 698 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 699 | int_xor(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 700 | { |
| 701 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 702 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 703 | b = w->ob_ival; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 704 | return PyInt_FromLong(a ^ b); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 705 | } |
| 706 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 707 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 708 | int_or(PyIntObject *v, PyIntObject *w) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 709 | { |
| 710 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 711 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 712 | b = w->ob_ival; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 713 | return PyInt_FromLong(a | b); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 714 | } |
| 715 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 716 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 717 | int_int(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 718 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 719 | Py_INCREF(v); |
| 720 | return (PyObject *)v; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 721 | } |
| 722 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 723 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 724 | int_long(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 725 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 726 | return PyLong_FromLong((v -> ob_ival)); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 727 | } |
| 728 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 729 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 730 | int_float(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 731 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 732 | return PyFloat_FromDouble((double)(v -> ob_ival)); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 733 | } |
| 734 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 735 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 736 | int_oct(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 737 | { |
Guido van Rossum | 6f72f97 | 1997-01-14 15:43:41 +0000 | [diff] [blame] | 738 | char buf[100]; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 739 | long x = v -> ob_ival; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 740 | if (x == 0) |
| 741 | strcpy(buf, "0"); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 742 | else |
Guido van Rossum | ebee025 | 1997-01-12 19:48:03 +0000 | [diff] [blame] | 743 | sprintf(buf, "0%lo", x); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 744 | return PyString_FromString(buf); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 745 | } |
| 746 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 747 | static PyObject * |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 748 | int_hex(PyIntObject *v) |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 749 | { |
Guido van Rossum | 6f72f97 | 1997-01-14 15:43:41 +0000 | [diff] [blame] | 750 | char buf[100]; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 751 | long x = v -> ob_ival; |
Guido van Rossum | ebee025 | 1997-01-12 19:48:03 +0000 | [diff] [blame] | 752 | sprintf(buf, "0x%lx", x); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 753 | return PyString_FromString(buf); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 754 | } |
| 755 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 756 | static PyNumberMethods int_as_number = { |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 757 | (binaryfunc)int_add, /*nb_add*/ |
| 758 | (binaryfunc)int_sub, /*nb_subtract*/ |
| 759 | (binaryfunc)int_mul, /*nb_multiply*/ |
| 760 | (binaryfunc)int_div, /*nb_divide*/ |
| 761 | (binaryfunc)int_mod, /*nb_remainder*/ |
| 762 | (binaryfunc)int_divmod, /*nb_divmod*/ |
| 763 | (ternaryfunc)int_pow, /*nb_power*/ |
| 764 | (unaryfunc)int_neg, /*nb_negative*/ |
| 765 | (unaryfunc)int_pos, /*nb_positive*/ |
| 766 | (unaryfunc)int_abs, /*nb_absolute*/ |
| 767 | (inquiry)int_nonzero, /*nb_nonzero*/ |
| 768 | (unaryfunc)int_invert, /*nb_invert*/ |
| 769 | (binaryfunc)int_lshift, /*nb_lshift*/ |
| 770 | (binaryfunc)int_rshift, /*nb_rshift*/ |
| 771 | (binaryfunc)int_and, /*nb_and*/ |
| 772 | (binaryfunc)int_xor, /*nb_xor*/ |
| 773 | (binaryfunc)int_or, /*nb_or*/ |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 774 | 0, /*nb_coerce*/ |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 775 | (unaryfunc)int_int, /*nb_int*/ |
| 776 | (unaryfunc)int_long, /*nb_long*/ |
| 777 | (unaryfunc)int_float, /*nb_float*/ |
| 778 | (unaryfunc)int_oct, /*nb_oct*/ |
| 779 | (unaryfunc)int_hex, /*nb_hex*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 780 | }; |
| 781 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 782 | PyTypeObject PyInt_Type = { |
| 783 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 784 | 0, |
| 785 | "int", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 786 | sizeof(PyIntObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 787 | 0, |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 788 | (destructor)int_dealloc, /*tp_dealloc*/ |
| 789 | (printfunc)int_print, /*tp_print*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 790 | 0, /*tp_getattr*/ |
| 791 | 0, /*tp_setattr*/ |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 792 | (cmpfunc)int_compare, /*tp_compare*/ |
| 793 | (reprfunc)int_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 794 | &int_as_number, /*tp_as_number*/ |
| 795 | 0, /*tp_as_sequence*/ |
| 796 | 0, /*tp_as_mapping*/ |
Guido van Rossum | bf8c0e3 | 1994-08-29 12:48:32 +0000 | [diff] [blame] | 797 | (hashfunc)int_hash, /*tp_hash*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 798 | }; |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 799 | |
| 800 | void |
Fred Drake | a2f5511 | 2000-07-09 15:16:51 +0000 | [diff] [blame] | 801 | PyInt_Fini(void) |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 802 | { |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 803 | PyIntObject *p; |
| 804 | PyIntBlock *list, *next; |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 805 | int i; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 806 | int bc, bf; /* block count, number of freed blocks */ |
| 807 | int irem, isum; /* remaining unfreed ints per block, total */ |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 808 | |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 809 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 810 | PyIntObject **q; |
| 811 | |
| 812 | i = NSMALLNEGINTS + NSMALLPOSINTS; |
| 813 | q = small_ints; |
| 814 | while (--i >= 0) { |
| 815 | Py_XDECREF(*q); |
| 816 | *q++ = NULL; |
| 817 | } |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 818 | #endif |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 819 | bc = 0; |
| 820 | bf = 0; |
| 821 | isum = 0; |
| 822 | list = block_list; |
| 823 | block_list = NULL; |
Guido van Rossum | 51288bc | 1999-03-19 20:30:39 +0000 | [diff] [blame] | 824 | free_list = NULL; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 825 | while (list != NULL) { |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 826 | bc++; |
| 827 | irem = 0; |
Guido van Rossum | 51288bc | 1999-03-19 20:30:39 +0000 | [diff] [blame] | 828 | for (i = 0, p = &list->objects[0]; |
| 829 | i < N_INTOBJECTS; |
| 830 | i++, p++) { |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 831 | if (PyInt_Check(p) && p->ob_refcnt != 0) |
| 832 | irem++; |
| 833 | } |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 834 | next = list->next; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 835 | if (irem) { |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 836 | list->next = block_list; |
| 837 | block_list = list; |
Guido van Rossum | 51288bc | 1999-03-19 20:30:39 +0000 | [diff] [blame] | 838 | for (i = 0, p = &list->objects[0]; |
| 839 | i < N_INTOBJECTS; |
| 840 | i++, p++) { |
| 841 | if (!PyInt_Check(p) || p->ob_refcnt == 0) { |
| 842 | p->ob_type = (struct _typeobject *) |
| 843 | free_list; |
| 844 | free_list = p; |
| 845 | } |
| 846 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 847 | else if (-NSMALLNEGINTS <= p->ob_ival && |
| 848 | p->ob_ival < NSMALLPOSINTS && |
| 849 | small_ints[p->ob_ival + |
| 850 | NSMALLNEGINTS] == NULL) { |
| 851 | Py_INCREF(p); |
| 852 | small_ints[p->ob_ival + |
| 853 | NSMALLNEGINTS] = p; |
| 854 | } |
| 855 | #endif |
| 856 | } |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 857 | } |
| 858 | else { |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 859 | PyMem_FREE(list); /* XXX PyObject_FREE ??? */ |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 860 | bf++; |
| 861 | } |
| 862 | isum += irem; |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 863 | list = next; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 864 | } |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 865 | if (!Py_VerboseFlag) |
| 866 | return; |
| 867 | fprintf(stderr, "# cleanup ints"); |
| 868 | if (!isum) { |
| 869 | fprintf(stderr, "\n"); |
| 870 | } |
| 871 | else { |
| 872 | fprintf(stderr, |
| 873 | ": %d unfreed int%s in %d out of %d block%s\n", |
| 874 | isum, isum == 1 ? "" : "s", |
| 875 | bc - bf, bc, bc == 1 ? "" : "s"); |
| 876 | } |
| 877 | if (Py_VerboseFlag > 1) { |
| 878 | list = block_list; |
| 879 | while (list != NULL) { |
Guido van Rossum | 51288bc | 1999-03-19 20:30:39 +0000 | [diff] [blame] | 880 | for (i = 0, p = &list->objects[0]; |
| 881 | i < N_INTOBJECTS; |
| 882 | i++, p++) { |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 883 | if (PyInt_Check(p) && p->ob_refcnt != 0) |
| 884 | fprintf(stderr, |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 885 | "# <int at %p, refcnt=%d, val=%ld>\n", |
| 886 | p, p->ob_refcnt, p->ob_ival); |
Guido van Rossum | 3fce883 | 1999-03-12 19:43:17 +0000 | [diff] [blame] | 887 | } |
| 888 | list = list->next; |
Guido van Rossum | da084ed | 1999-03-10 22:55:24 +0000 | [diff] [blame] | 889 | } |
| 890 | } |
Guido van Rossum | fbbd57e | 1997-08-05 02:16:08 +0000 | [diff] [blame] | 891 | } |