Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
| 2 | Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The |
| 3 | Netherlands. |
| 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 | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 28 | |
| 29 | /* Standard Booleans */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 30 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 31 | intobject FalseObject = { |
| 32 | OB_HEAD_INIT(&Inttype) |
| 33 | 0 |
| 34 | }; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 35 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 36 | intobject TrueObject = { |
| 37 | OB_HEAD_INIT(&Inttype) |
| 38 | 1 |
| 39 | }; |
| 40 | |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 41 | static object * |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 42 | err_ovf(msg) |
| 43 | char *msg; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 44 | { |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 45 | err_setstr(OverflowError, msg); |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 46 | return NULL; |
| 47 | } |
| 48 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 49 | /* Integers are quite normal objects, to make object handling uniform. |
| 50 | (Using odd pointers to represent integers would save much space |
| 51 | but require extra checks for this special case throughout the code.) |
| 52 | Since, a typical Python program spends much of its time allocating |
| 53 | and deallocating integers, these operations should be very fast. |
| 54 | Therefore we use a dedicated allocation scheme with a much lower |
| 55 | overhead (in space and time) than straight malloc(): a simple |
| 56 | dedicated free list, filled when necessary with memory from malloc(). |
| 57 | */ |
| 58 | |
| 59 | #define BLOCK_SIZE 1000 /* 1K less typical malloc overhead */ |
| 60 | #define N_INTOBJECTS (BLOCK_SIZE / sizeof(intobject)) |
| 61 | |
| 62 | static intobject * |
| 63 | fill_free_list() |
| 64 | { |
| 65 | intobject *p, *q; |
| 66 | p = NEW(intobject, N_INTOBJECTS); |
| 67 | if (p == NULL) |
| 68 | return (intobject *)err_nomem(); |
| 69 | q = p + N_INTOBJECTS; |
| 70 | while (--q > p) |
| 71 | *(intobject **)q = q-1; |
| 72 | *(intobject **)q = NULL; |
| 73 | return p + N_INTOBJECTS - 1; |
| 74 | } |
| 75 | |
| 76 | static intobject *free_list = NULL; |
| 77 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 78 | object * |
| 79 | newintobject(ival) |
| 80 | long ival; |
| 81 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 82 | register intobject *v; |
| 83 | if (free_list == NULL) { |
| 84 | if ((free_list = fill_free_list()) == NULL) |
| 85 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 86 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 87 | v = free_list; |
| 88 | free_list = *(intobject **)free_list; |
| 89 | NEWREF(v); |
| 90 | v->ob_type = &Inttype; |
| 91 | v->ob_ival = ival; |
| 92 | return (object *) v; |
| 93 | } |
| 94 | |
| 95 | static void |
| 96 | int_dealloc(v) |
| 97 | intobject *v; |
| 98 | { |
| 99 | *(intobject **)v = free_list; |
| 100 | free_list = v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | long |
| 104 | getintvalue(op) |
| 105 | register object *op; |
| 106 | { |
| 107 | if (!is_intobject(op)) { |
Guido van Rossum | 5c52b6a | 1990-10-21 22:11:03 +0000 | [diff] [blame] | 108 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 109 | return -1; |
| 110 | } |
| 111 | else |
| 112 | return ((intobject *)op) -> ob_ival; |
| 113 | } |
| 114 | |
| 115 | /* Methods */ |
| 116 | |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 117 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 118 | int_print(v, fp, flags) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 119 | intobject *v; |
| 120 | FILE *fp; |
| 121 | int flags; |
| 122 | { |
| 123 | fprintf(fp, "%ld", v->ob_ival); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 124 | return 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 128 | int_repr(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 129 | intobject *v; |
| 130 | { |
| 131 | char buf[20]; |
| 132 | sprintf(buf, "%ld", v->ob_ival); |
| 133 | return newstringobject(buf); |
| 134 | } |
| 135 | |
| 136 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 137 | int_compare(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 138 | intobject *v, *w; |
| 139 | { |
| 140 | register long i = v->ob_ival; |
| 141 | register long j = w->ob_ival; |
| 142 | return (i < j) ? -1 : (i > j) ? 1 : 0; |
| 143 | } |
| 144 | |
| 145 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 146 | int_add(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 147 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 148 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 149 | { |
| 150 | register long a, b, x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 151 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 152 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 153 | x = a + b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 154 | if ((x^a) < 0 && (x^b) < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 155 | return err_ovf("integer addition"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 156 | return newintobject(x); |
| 157 | } |
| 158 | |
| 159 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 160 | int_sub(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 161 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 162 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 163 | { |
| 164 | register long a, b, x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 165 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 166 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 167 | x = a - b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 168 | if ((x^a) < 0 && (x^~b) < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 169 | return err_ovf("integer subtraction"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 170 | return newintobject(x); |
| 171 | } |
| 172 | |
| 173 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 174 | int_mul(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 175 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 176 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 177 | { |
| 178 | register long a, b; |
| 179 | double x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 180 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 181 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 182 | x = (double)a * (double)b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 183 | if (x > 0x7fffffff || x < (double) (long) 0x80000000) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 184 | return err_ovf("integer multiplication"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 185 | return newintobject(a * b); |
| 186 | } |
| 187 | |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 188 | static int |
| 189 | i_divmod(x, y, p_xdivy, p_xmody) |
| 190 | register intobject *x, *y; |
| 191 | long *p_xdivy, *p_xmody; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 192 | { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 193 | long xi = x->ob_ival; |
| 194 | long yi = y->ob_ival; |
| 195 | long xdivy, xmody; |
| 196 | |
| 197 | if (yi == 0) { |
| 198 | err_setstr(ZeroDivisionError, "integer division or modulo"); |
| 199 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 200 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 201 | if (yi < 0) { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 202 | if (xi < 0) |
| 203 | xdivy = -xi / -yi; |
| 204 | else |
| 205 | xdivy = - (xi / -yi); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 206 | } |
| 207 | else { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 208 | if (xi < 0) |
| 209 | xdivy = - (-xi / yi); |
| 210 | else |
| 211 | xdivy = xi / yi; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 212 | } |
| 213 | xmody = xi - xdivy*yi; |
| 214 | if (xmody < 0 && yi > 0 || xmody > 0 && yi < 0) { |
| 215 | xmody += yi; |
| 216 | xdivy -= 1; |
| 217 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 218 | *p_xdivy = xdivy; |
| 219 | *p_xmody = xmody; |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | static object * |
| 224 | int_div(x, y) |
| 225 | intobject *x; |
| 226 | intobject *y; |
| 227 | { |
| 228 | long d, m; |
| 229 | if (i_divmod(x, y, &d, &m) < 0) |
| 230 | return NULL; |
| 231 | return newintobject(d); |
| 232 | } |
| 233 | |
| 234 | static object * |
| 235 | int_mod(x, y) |
| 236 | intobject *x; |
| 237 | intobject *y; |
| 238 | { |
| 239 | long d, m; |
| 240 | if (i_divmod(x, y, &d, &m) < 0) |
| 241 | return NULL; |
| 242 | newintobject(m); |
| 243 | } |
| 244 | |
| 245 | static object * |
| 246 | int_divmod(x, y) |
| 247 | intobject *x; |
| 248 | intobject *y; |
| 249 | { |
| 250 | object *v, *v0, *v1; |
| 251 | long d, m; |
| 252 | if (i_divmod(x, y, &d, &m) < 0) |
| 253 | return NULL; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 254 | v = newtupleobject(2); |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 255 | v0 = newintobject(d); |
| 256 | v1 = newintobject(m); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 257 | if (v == NULL || v0 == NULL || v1 == NULL || |
| 258 | settupleitem(v, 0, v0) != 0 || |
| 259 | settupleitem(v, 1, v1) != 0) { |
| 260 | XDECREF(v); |
| 261 | XDECREF(v0); |
| 262 | XDECREF(v1); |
| 263 | v = NULL; |
| 264 | } |
| 265 | return v; |
| 266 | } |
| 267 | |
| 268 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 269 | int_pow(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 270 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 271 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 272 | { |
| 273 | register long iv, iw, ix; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 274 | iv = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 275 | iw = w->ob_ival; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 276 | if (iw < 0) { |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 277 | err_setstr(ValueError, "integer to the negative power"); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 278 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 279 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 280 | ix = 1; |
| 281 | while (--iw >= 0) { |
| 282 | long prev = ix; |
| 283 | ix = ix * iv; |
| 284 | if (iv == 0) |
| 285 | break; /* 0 to some power -- avoid ix / 0 */ |
| 286 | if (ix / iv != prev) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 287 | return err_ovf("integer pow()"); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 288 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 289 | return newintobject(ix); |
| 290 | } |
| 291 | |
| 292 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 293 | int_neg(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 294 | intobject *v; |
| 295 | { |
| 296 | register long a, x; |
| 297 | a = v->ob_ival; |
| 298 | x = -a; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 299 | if (a < 0 && x < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 300 | return err_ovf("integer negation"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 301 | return newintobject(x); |
| 302 | } |
| 303 | |
| 304 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 305 | int_pos(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 306 | intobject *v; |
| 307 | { |
| 308 | INCREF(v); |
| 309 | return (object *)v; |
| 310 | } |
| 311 | |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 312 | static object * |
| 313 | int_abs(v) |
| 314 | intobject *v; |
| 315 | { |
| 316 | if (v->ob_ival >= 0) |
| 317 | return int_pos(v); |
| 318 | else |
| 319 | return int_neg(v); |
| 320 | } |
| 321 | |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 322 | static int |
| 323 | int_nonzero(v) |
| 324 | intobject *v; |
| 325 | { |
| 326 | return v->ob_ival != 0; |
| 327 | } |
| 328 | |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 329 | static object * |
| 330 | int_invert(v) |
| 331 | intobject *v; |
| 332 | { |
| 333 | return newintobject(~v->ob_ival); |
| 334 | } |
| 335 | |
| 336 | static object * |
| 337 | int_lshift(v, w) |
| 338 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 339 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 340 | { |
| 341 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 342 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 343 | b = w->ob_ival; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 344 | if (b < 0) { |
| 345 | err_setstr(ValueError, "negative shift count"); |
| 346 | return NULL; |
| 347 | } |
| 348 | if (a == 0 || b == 0) { |
| 349 | INCREF(v); |
| 350 | return (object *) v; |
| 351 | } |
| 352 | if (b >= 32) { |
| 353 | return newintobject(0L); |
| 354 | } |
| 355 | a = (unsigned long)a << b; |
| 356 | return newintobject(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | static object * |
| 360 | int_rshift(v, w) |
| 361 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 362 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 363 | { |
| 364 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 365 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 366 | b = w->ob_ival; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 367 | if (b < 0) { |
| 368 | err_setstr(ValueError, "negative shift count"); |
| 369 | return NULL; |
| 370 | } |
| 371 | if (a == 0 || b == 0) { |
| 372 | INCREF(v); |
| 373 | return (object *) v; |
| 374 | } |
| 375 | if (b >= 32) { |
| 376 | if (a < 0) |
| 377 | a = -1; |
| 378 | else |
| 379 | a = 0; |
| 380 | } |
| 381 | else { |
| 382 | if (a < 0) |
| 383 | a = ~( ~(unsigned long)a >> b ); |
| 384 | else |
| 385 | a = (unsigned long)a >> b; |
| 386 | } |
| 387 | return newintobject(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | static object * |
| 391 | int_and(v, w) |
| 392 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 393 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 394 | { |
| 395 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 396 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 397 | b = w->ob_ival; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 398 | return newintobject(a & b); |
| 399 | } |
| 400 | |
| 401 | static object * |
| 402 | int_xor(v, w) |
| 403 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 404 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 405 | { |
| 406 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 407 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 408 | b = w->ob_ival; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 409 | return newintobject(a ^ b); |
| 410 | } |
| 411 | |
| 412 | static object * |
| 413 | int_or(v, w) |
| 414 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 415 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 416 | { |
| 417 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 418 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 419 | b = w->ob_ival; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 420 | return newintobject(a | b); |
| 421 | } |
| 422 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 423 | static number_methods int_as_number = { |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 424 | int_add, /*nb_add*/ |
| 425 | int_sub, /*nb_subtract*/ |
| 426 | int_mul, /*nb_multiply*/ |
| 427 | int_div, /*nb_divide*/ |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame^] | 428 | int_mod, /*nb_remainder*/ |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 429 | int_divmod, /*nb_divmod*/ |
| 430 | int_pow, /*nb_power*/ |
| 431 | int_neg, /*nb_negative*/ |
| 432 | int_pos, /*nb_positive*/ |
| 433 | int_abs, /*nb_absolute*/ |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 434 | int_nonzero, /*nb_nonzero*/ |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 435 | int_invert, /*nb_invert*/ |
| 436 | int_lshift, /*nb_lshift*/ |
| 437 | int_rshift, /*nb_rshift*/ |
| 438 | int_and, /*nb_and*/ |
| 439 | int_xor, /*nb_xor*/ |
| 440 | int_or, /*nb_or*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 441 | }; |
| 442 | |
| 443 | typeobject Inttype = { |
| 444 | OB_HEAD_INIT(&Typetype) |
| 445 | 0, |
| 446 | "int", |
| 447 | sizeof(intobject), |
| 448 | 0, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 449 | int_dealloc, /*tp_dealloc*/ |
| 450 | int_print, /*tp_print*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 451 | 0, /*tp_getattr*/ |
| 452 | 0, /*tp_setattr*/ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 453 | int_compare, /*tp_compare*/ |
| 454 | int_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 455 | &int_as_number, /*tp_as_number*/ |
| 456 | 0, /*tp_as_sequence*/ |
| 457 | 0, /*tp_as_mapping*/ |
| 458 | }; |