Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum, |
| 3 | Amsterdam, The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | distribution of the software without specific, written prior permission. |
| 14 | |
| 15 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ******************************************************************/ |
| 24 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 25 | /* Integer object implementation */ |
| 26 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 27 | #include "allobjects.h" |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 28 | #include "modsupport.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 29 | |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 30 | #ifdef __STDC__ |
| 31 | #include <limits.h> |
| 32 | #endif |
| 33 | |
| 34 | #ifndef LONG_MAX |
| 35 | #define LONG_MAX 0X7FFFFFFFL |
| 36 | #endif |
| 37 | |
| 38 | #ifndef LONG_MIN |
| 39 | #define LONG_MIN (-LONG_MAX-1) |
| 40 | #endif |
| 41 | |
| 42 | #ifndef CHAR_BIT |
| 43 | #define CHAR_BIT 8 |
| 44 | #endif |
| 45 | |
Guido van Rossum | b376a4a | 1993-11-23 17:53:17 +0000 | [diff] [blame] | 46 | #ifndef LONG_BIT |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 47 | #define LONG_BIT (CHAR_BIT * sizeof(long)) |
Guido van Rossum | b376a4a | 1993-11-23 17:53:17 +0000 | [diff] [blame] | 48 | #endif |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 49 | |
Guido van Rossum | 2e1d433 | 1993-12-24 10:22:45 +0000 | [diff] [blame^] | 50 | long |
| 51 | getmaxint() |
| 52 | { |
| 53 | return LONG_MAX; /* To initialize sys.maxint */ |
| 54 | } |
| 55 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 56 | /* Standard Booleans */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 57 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 58 | intobject FalseObject = { |
| 59 | OB_HEAD_INIT(&Inttype) |
| 60 | 0 |
| 61 | }; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 62 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 63 | intobject TrueObject = { |
| 64 | OB_HEAD_INIT(&Inttype) |
| 65 | 1 |
| 66 | }; |
| 67 | |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 68 | static object * |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 69 | err_ovf(msg) |
| 70 | char *msg; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 71 | { |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 72 | err_setstr(OverflowError, msg); |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 73 | return NULL; |
| 74 | } |
| 75 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 76 | /* Integers are quite normal objects, to make object handling uniform. |
| 77 | (Using odd pointers to represent integers would save much space |
| 78 | but require extra checks for this special case throughout the code.) |
| 79 | Since, a typical Python program spends much of its time allocating |
| 80 | and deallocating integers, these operations should be very fast. |
| 81 | Therefore we use a dedicated allocation scheme with a much lower |
| 82 | overhead (in space and time) than straight malloc(): a simple |
| 83 | dedicated free list, filled when necessary with memory from malloc(). |
| 84 | */ |
| 85 | |
| 86 | #define BLOCK_SIZE 1000 /* 1K less typical malloc overhead */ |
| 87 | #define N_INTOBJECTS (BLOCK_SIZE / sizeof(intobject)) |
| 88 | |
| 89 | static intobject * |
| 90 | fill_free_list() |
| 91 | { |
| 92 | intobject *p, *q; |
| 93 | p = NEW(intobject, N_INTOBJECTS); |
| 94 | if (p == NULL) |
| 95 | return (intobject *)err_nomem(); |
| 96 | q = p + N_INTOBJECTS; |
| 97 | while (--q > p) |
| 98 | *(intobject **)q = q-1; |
| 99 | *(intobject **)q = NULL; |
| 100 | return p + N_INTOBJECTS - 1; |
| 101 | } |
| 102 | |
| 103 | static intobject *free_list = NULL; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 104 | #ifndef NSMALLPOSINTS |
| 105 | #define NSMALLPOSINTS 100 |
| 106 | #endif |
| 107 | #ifndef NSMALLNEGINTS |
| 108 | #define NSMALLNEGINTS 1 |
| 109 | #endif |
| 110 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 111 | /* References to small integers are saved in this array so that they |
| 112 | can be shared. |
| 113 | The integers that are saved are those in the range |
| 114 | -NSMALLNEGINTS (inclusive) to NSMALLPOSINTS (not inclusive). |
| 115 | */ |
| 116 | static intobject *small_ints[NSMALLNEGINTS + NSMALLPOSINTS]; |
| 117 | #endif |
| 118 | #ifdef COUNT_ALLOCS |
| 119 | int quick_int_allocs, quick_neg_int_allocs; |
| 120 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 121 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 122 | object * |
| 123 | newintobject(ival) |
| 124 | long ival; |
| 125 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 126 | register intobject *v; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 127 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 128 | if (-NSMALLNEGINTS <= ival && ival < NSMALLPOSINTS && |
| 129 | (v = small_ints[ival + NSMALLNEGINTS]) != NULL) { |
| 130 | INCREF(v); |
| 131 | #ifdef COUNT_ALLOCS |
| 132 | if (ival >= 0) |
| 133 | quick_int_allocs++; |
| 134 | else |
| 135 | quick_neg_int_allocs++; |
| 136 | #endif |
| 137 | return (object *) v; |
| 138 | } |
| 139 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 140 | if (free_list == NULL) { |
| 141 | if ((free_list = fill_free_list()) == NULL) |
| 142 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 143 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 144 | v = free_list; |
| 145 | free_list = *(intobject **)free_list; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 146 | v->ob_type = &Inttype; |
| 147 | v->ob_ival = ival; |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 148 | NEWREF(v); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 149 | #if NSMALLNEGINTS + NSMALLPOSINTS > 0 |
| 150 | if (-NSMALLNEGINTS <= ival && ival < NSMALLPOSINTS) { |
| 151 | /* save this one for a following allocation */ |
| 152 | INCREF(v); |
| 153 | small_ints[ival + NSMALLNEGINTS] = v; |
| 154 | } |
| 155 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 156 | return (object *) v; |
| 157 | } |
| 158 | |
| 159 | static void |
| 160 | int_dealloc(v) |
| 161 | intobject *v; |
| 162 | { |
| 163 | *(intobject **)v = free_list; |
| 164 | free_list = v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | long |
| 168 | getintvalue(op) |
| 169 | register object *op; |
| 170 | { |
| 171 | if (!is_intobject(op)) { |
Guido van Rossum | 5c52b6a | 1990-10-21 22:11:03 +0000 | [diff] [blame] | 172 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 173 | return -1; |
| 174 | } |
| 175 | else |
| 176 | return ((intobject *)op) -> ob_ival; |
| 177 | } |
| 178 | |
| 179 | /* Methods */ |
| 180 | |
Guido van Rossum | 719f5fa | 1992-03-27 17:31:02 +0000 | [diff] [blame] | 181 | /* ARGSUSED */ |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 182 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 183 | int_print(v, fp, flags) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 184 | intobject *v; |
| 185 | FILE *fp; |
Guido van Rossum | 719f5fa | 1992-03-27 17:31:02 +0000 | [diff] [blame] | 186 | int flags; /* Not used but required by interface */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 187 | { |
| 188 | fprintf(fp, "%ld", v->ob_ival); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 189 | return 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 193 | int_repr(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 194 | intobject *v; |
| 195 | { |
| 196 | char buf[20]; |
| 197 | sprintf(buf, "%ld", v->ob_ival); |
| 198 | return newstringobject(buf); |
| 199 | } |
| 200 | |
| 201 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 202 | int_compare(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 203 | intobject *v, *w; |
| 204 | { |
| 205 | register long i = v->ob_ival; |
| 206 | register long j = w->ob_ival; |
| 207 | return (i < j) ? -1 : (i > j) ? 1 : 0; |
| 208 | } |
| 209 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 210 | static long |
| 211 | int_hash(v) |
| 212 | intobject *v; |
| 213 | { |
| 214 | long x = v -> ob_ival; |
| 215 | if (x == -1) |
| 216 | x = -2; |
| 217 | return x; |
| 218 | } |
| 219 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 220 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 221 | int_add(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 222 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 223 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 224 | { |
| 225 | register long a, b, x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 226 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 227 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 228 | x = a + b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 229 | if ((x^a) < 0 && (x^b) < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 230 | return err_ovf("integer addition"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 231 | return newintobject(x); |
| 232 | } |
| 233 | |
| 234 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 235 | int_sub(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 236 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 237 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 238 | { |
| 239 | register long a, b, x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 240 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 241 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 242 | x = a - b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 243 | if ((x^a) < 0 && (x^~b) < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 244 | return err_ovf("integer subtraction"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 245 | return newintobject(x); |
| 246 | } |
| 247 | |
| 248 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 249 | int_mul(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 250 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 251 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 252 | { |
| 253 | register long a, b; |
| 254 | double x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 255 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 256 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 257 | x = (double)a * (double)b; |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 258 | if (x > LONG_MAX || x < (double) (long) (LONG_MIN)) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 259 | return err_ovf("integer multiplication"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 260 | return newintobject(a * b); |
| 261 | } |
| 262 | |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 263 | static int |
| 264 | i_divmod(x, y, p_xdivy, p_xmody) |
| 265 | register intobject *x, *y; |
| 266 | long *p_xdivy, *p_xmody; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 267 | { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 268 | long xi = x->ob_ival; |
| 269 | long yi = y->ob_ival; |
| 270 | long xdivy, xmody; |
| 271 | |
| 272 | if (yi == 0) { |
| 273 | err_setstr(ZeroDivisionError, "integer division or modulo"); |
| 274 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 275 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 276 | if (yi < 0) { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 277 | if (xi < 0) |
| 278 | xdivy = -xi / -yi; |
| 279 | else |
| 280 | xdivy = - (xi / -yi); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 281 | } |
| 282 | else { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 283 | if (xi < 0) |
| 284 | xdivy = - (-xi / yi); |
| 285 | else |
| 286 | xdivy = xi / yi; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 287 | } |
| 288 | xmody = xi - xdivy*yi; |
| 289 | if (xmody < 0 && yi > 0 || xmody > 0 && yi < 0) { |
| 290 | xmody += yi; |
| 291 | xdivy -= 1; |
| 292 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 293 | *p_xdivy = xdivy; |
| 294 | *p_xmody = xmody; |
| 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | static object * |
| 299 | int_div(x, y) |
| 300 | intobject *x; |
| 301 | intobject *y; |
| 302 | { |
| 303 | long d, m; |
| 304 | if (i_divmod(x, y, &d, &m) < 0) |
| 305 | return NULL; |
| 306 | return newintobject(d); |
| 307 | } |
| 308 | |
| 309 | static object * |
| 310 | int_mod(x, y) |
| 311 | intobject *x; |
| 312 | intobject *y; |
| 313 | { |
| 314 | long d, m; |
| 315 | if (i_divmod(x, y, &d, &m) < 0) |
| 316 | return NULL; |
Guido van Rossum | 719f5fa | 1992-03-27 17:31:02 +0000 | [diff] [blame] | 317 | return newintobject(m); |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | static object * |
| 321 | int_divmod(x, y) |
| 322 | intobject *x; |
| 323 | intobject *y; |
| 324 | { |
| 325 | object *v, *v0, *v1; |
| 326 | long d, m; |
| 327 | if (i_divmod(x, y, &d, &m) < 0) |
| 328 | return NULL; |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 329 | return mkvalue("(ll)", d, m); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 333 | int_pow(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 334 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 335 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 336 | { |
| 337 | register long iv, iw, ix; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 338 | iv = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 339 | iw = w->ob_ival; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 340 | if (iw < 0) { |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 341 | err_setstr(ValueError, "integer to the negative power"); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 342 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 343 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 344 | ix = 1; |
| 345 | while (--iw >= 0) { |
| 346 | long prev = ix; |
| 347 | ix = ix * iv; |
| 348 | if (iv == 0) |
| 349 | break; /* 0 to some power -- avoid ix / 0 */ |
| 350 | if (ix / iv != prev) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 351 | return err_ovf("integer pow()"); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 352 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 353 | return newintobject(ix); |
| 354 | } |
| 355 | |
| 356 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 357 | int_neg(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 358 | intobject *v; |
| 359 | { |
| 360 | register long a, x; |
| 361 | a = v->ob_ival; |
| 362 | x = -a; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 363 | if (a < 0 && x < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 364 | return err_ovf("integer negation"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 365 | return newintobject(x); |
| 366 | } |
| 367 | |
| 368 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 369 | int_pos(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 370 | intobject *v; |
| 371 | { |
| 372 | INCREF(v); |
| 373 | return (object *)v; |
| 374 | } |
| 375 | |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 376 | static object * |
| 377 | int_abs(v) |
| 378 | intobject *v; |
| 379 | { |
| 380 | if (v->ob_ival >= 0) |
| 381 | return int_pos(v); |
| 382 | else |
| 383 | return int_neg(v); |
| 384 | } |
| 385 | |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 386 | static int |
| 387 | int_nonzero(v) |
| 388 | intobject *v; |
| 389 | { |
| 390 | return v->ob_ival != 0; |
| 391 | } |
| 392 | |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 393 | static object * |
| 394 | int_invert(v) |
| 395 | intobject *v; |
| 396 | { |
| 397 | return newintobject(~v->ob_ival); |
| 398 | } |
| 399 | |
| 400 | static object * |
| 401 | int_lshift(v, w) |
| 402 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 403 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 404 | { |
| 405 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 406 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 407 | b = w->ob_ival; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 408 | if (b < 0) { |
| 409 | err_setstr(ValueError, "negative shift count"); |
| 410 | return NULL; |
| 411 | } |
| 412 | if (a == 0 || b == 0) { |
| 413 | INCREF(v); |
| 414 | return (object *) v; |
| 415 | } |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 416 | if (b >= LONG_BIT) { |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 417 | return newintobject(0L); |
| 418 | } |
| 419 | a = (unsigned long)a << b; |
| 420 | return newintobject(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 421 | } |
| 422 | |
| 423 | static object * |
| 424 | int_rshift(v, w) |
| 425 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 426 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 427 | { |
| 428 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 429 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 430 | b = w->ob_ival; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 431 | if (b < 0) { |
| 432 | err_setstr(ValueError, "negative shift count"); |
| 433 | return NULL; |
| 434 | } |
| 435 | if (a == 0 || b == 0) { |
| 436 | INCREF(v); |
| 437 | return (object *) v; |
| 438 | } |
Guido van Rossum | 72481a3 | 1993-10-26 15:21:51 +0000 | [diff] [blame] | 439 | if (b >= LONG_BIT) { |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 440 | if (a < 0) |
| 441 | a = -1; |
| 442 | else |
| 443 | a = 0; |
| 444 | } |
| 445 | else { |
| 446 | if (a < 0) |
| 447 | a = ~( ~(unsigned long)a >> b ); |
| 448 | else |
| 449 | a = (unsigned long)a >> b; |
| 450 | } |
| 451 | return newintobject(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | static object * |
| 455 | int_and(v, w) |
| 456 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 457 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 458 | { |
| 459 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 460 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 461 | b = w->ob_ival; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 462 | return newintobject(a & b); |
| 463 | } |
| 464 | |
| 465 | static object * |
| 466 | int_xor(v, w) |
| 467 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 468 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 469 | { |
| 470 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 471 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 472 | b = w->ob_ival; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 473 | return newintobject(a ^ b); |
| 474 | } |
| 475 | |
| 476 | static object * |
| 477 | int_or(v, w) |
| 478 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 479 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 480 | { |
| 481 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 482 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 483 | b = w->ob_ival; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 484 | return newintobject(a | b); |
| 485 | } |
| 486 | |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 487 | static object * |
| 488 | int_int(v) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 489 | intobject *v; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 490 | { |
| 491 | INCREF(v); |
Guido van Rossum | 9575a44 | 1993-04-07 14:06:14 +0000 | [diff] [blame] | 492 | return (object *)v; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 493 | } |
| 494 | |
| 495 | static object * |
| 496 | int_long(v) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 497 | intobject *v; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 498 | { |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 499 | return newlongobject((v -> ob_ival)); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | static object * |
| 503 | int_float(v) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 504 | intobject *v; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 505 | { |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 506 | return newfloatobject((double)(v -> ob_ival)); |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 507 | } |
| 508 | |
| 509 | static object * |
| 510 | int_oct(v) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 511 | intobject *v; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 512 | { |
| 513 | char buf[20]; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 514 | long x = v -> ob_ival; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 515 | if (x == 0) |
| 516 | strcpy(buf, "0"); |
| 517 | else if (x > 0) |
| 518 | sprintf(buf, "0%lo", x); |
| 519 | else |
| 520 | sprintf(buf, "-0%lo", -x); |
| 521 | return newstringobject(buf); |
| 522 | } |
| 523 | |
| 524 | static object * |
| 525 | int_hex(v) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 526 | intobject *v; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 527 | { |
| 528 | char buf[20]; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 529 | long x = v -> ob_ival; |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 530 | if (x >= 0) |
| 531 | sprintf(buf, "0x%lx", x); |
| 532 | else |
| 533 | sprintf(buf, "-0x%lx", -x); |
| 534 | return newstringobject(buf); |
| 535 | } |
| 536 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 537 | static number_methods int_as_number = { |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 538 | int_add, /*nb_add*/ |
| 539 | int_sub, /*nb_subtract*/ |
| 540 | int_mul, /*nb_multiply*/ |
| 541 | int_div, /*nb_divide*/ |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 542 | int_mod, /*nb_remainder*/ |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 543 | int_divmod, /*nb_divmod*/ |
| 544 | int_pow, /*nb_power*/ |
| 545 | int_neg, /*nb_negative*/ |
| 546 | int_pos, /*nb_positive*/ |
| 547 | int_abs, /*nb_absolute*/ |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 548 | int_nonzero, /*nb_nonzero*/ |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 549 | int_invert, /*nb_invert*/ |
| 550 | int_lshift, /*nb_lshift*/ |
| 551 | int_rshift, /*nb_rshift*/ |
| 552 | int_and, /*nb_and*/ |
| 553 | int_xor, /*nb_xor*/ |
| 554 | int_or, /*nb_or*/ |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 555 | 0, /*nb_coerce*/ |
| 556 | int_int, /*nb_int*/ |
| 557 | int_long, /*nb_long*/ |
| 558 | int_float, /*nb_float*/ |
| 559 | int_oct, /*nb_oct*/ |
| 560 | int_hex, /*nb_hex*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 561 | }; |
| 562 | |
| 563 | typeobject Inttype = { |
| 564 | OB_HEAD_INIT(&Typetype) |
| 565 | 0, |
| 566 | "int", |
| 567 | sizeof(intobject), |
| 568 | 0, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 569 | int_dealloc, /*tp_dealloc*/ |
| 570 | int_print, /*tp_print*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 571 | 0, /*tp_getattr*/ |
| 572 | 0, /*tp_setattr*/ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 573 | int_compare, /*tp_compare*/ |
| 574 | int_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 575 | &int_as_number, /*tp_as_number*/ |
| 576 | 0, /*tp_as_sequence*/ |
| 577 | 0, /*tp_as_mapping*/ |
Guido van Rossum | 9575a44 | 1993-04-07 14:06:14 +0000 | [diff] [blame] | 578 | int_hash, /*tp_hash*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 579 | }; |