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