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 | |
| 30 | /* Standard Booleans */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 31 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 32 | intobject FalseObject = { |
| 33 | OB_HEAD_INIT(&Inttype) |
| 34 | 0 |
| 35 | }; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 36 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 37 | intobject TrueObject = { |
| 38 | OB_HEAD_INIT(&Inttype) |
| 39 | 1 |
| 40 | }; |
| 41 | |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 42 | static object * |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 43 | err_ovf(msg) |
| 44 | char *msg; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 45 | { |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 46 | err_setstr(OverflowError, msg); |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 47 | return NULL; |
| 48 | } |
| 49 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 50 | /* Integers are quite normal objects, to make object handling uniform. |
| 51 | (Using odd pointers to represent integers would save much space |
| 52 | but require extra checks for this special case throughout the code.) |
| 53 | Since, a typical Python program spends much of its time allocating |
| 54 | and deallocating integers, these operations should be very fast. |
| 55 | Therefore we use a dedicated allocation scheme with a much lower |
| 56 | overhead (in space and time) than straight malloc(): a simple |
| 57 | dedicated free list, filled when necessary with memory from malloc(). |
| 58 | */ |
| 59 | |
| 60 | #define BLOCK_SIZE 1000 /* 1K less typical malloc overhead */ |
| 61 | #define N_INTOBJECTS (BLOCK_SIZE / sizeof(intobject)) |
| 62 | |
| 63 | static intobject * |
| 64 | fill_free_list() |
| 65 | { |
| 66 | intobject *p, *q; |
| 67 | p = NEW(intobject, N_INTOBJECTS); |
| 68 | if (p == NULL) |
| 69 | return (intobject *)err_nomem(); |
| 70 | q = p + N_INTOBJECTS; |
| 71 | while (--q > p) |
| 72 | *(intobject **)q = q-1; |
| 73 | *(intobject **)q = NULL; |
| 74 | return p + N_INTOBJECTS - 1; |
| 75 | } |
| 76 | |
| 77 | static intobject *free_list = NULL; |
| 78 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 79 | object * |
| 80 | newintobject(ival) |
| 81 | long ival; |
| 82 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 83 | register intobject *v; |
| 84 | if (free_list == NULL) { |
| 85 | if ((free_list = fill_free_list()) == NULL) |
| 86 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 87 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 88 | v = free_list; |
| 89 | free_list = *(intobject **)free_list; |
| 90 | NEWREF(v); |
| 91 | v->ob_type = &Inttype; |
| 92 | v->ob_ival = ival; |
| 93 | return (object *) v; |
| 94 | } |
| 95 | |
| 96 | static void |
| 97 | int_dealloc(v) |
| 98 | intobject *v; |
| 99 | { |
| 100 | *(intobject **)v = free_list; |
| 101 | free_list = v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | long |
| 105 | getintvalue(op) |
| 106 | register object *op; |
| 107 | { |
| 108 | if (!is_intobject(op)) { |
Guido van Rossum | 5c52b6a | 1990-10-21 22:11:03 +0000 | [diff] [blame] | 109 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 110 | return -1; |
| 111 | } |
| 112 | else |
| 113 | return ((intobject *)op) -> ob_ival; |
| 114 | } |
| 115 | |
| 116 | /* Methods */ |
| 117 | |
Guido van Rossum | 719f5fa | 1992-03-27 17:31:02 +0000 | [diff] [blame] | 118 | /* ARGSUSED */ |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 119 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 120 | int_print(v, fp, flags) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 121 | intobject *v; |
| 122 | FILE *fp; |
Guido van Rossum | 719f5fa | 1992-03-27 17:31:02 +0000 | [diff] [blame] | 123 | int flags; /* Not used but required by interface */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 124 | { |
| 125 | fprintf(fp, "%ld", v->ob_ival); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 126 | return 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 130 | int_repr(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 131 | intobject *v; |
| 132 | { |
| 133 | char buf[20]; |
| 134 | sprintf(buf, "%ld", v->ob_ival); |
| 135 | return newstringobject(buf); |
| 136 | } |
| 137 | |
| 138 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 139 | int_compare(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 140 | intobject *v, *w; |
| 141 | { |
| 142 | register long i = v->ob_ival; |
| 143 | register long j = w->ob_ival; |
| 144 | return (i < j) ? -1 : (i > j) ? 1 : 0; |
| 145 | } |
| 146 | |
| 147 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 148 | int_add(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 149 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 150 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 151 | { |
| 152 | register long a, b, x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 153 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 154 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 155 | x = a + b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 156 | if ((x^a) < 0 && (x^b) < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 157 | return err_ovf("integer addition"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 158 | return newintobject(x); |
| 159 | } |
| 160 | |
| 161 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 162 | int_sub(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 163 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 164 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 165 | { |
| 166 | register long a, b, x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 167 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 168 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 169 | x = a - b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 170 | if ((x^a) < 0 && (x^~b) < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 171 | return err_ovf("integer subtraction"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 172 | return newintobject(x); |
| 173 | } |
| 174 | |
| 175 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 176 | int_mul(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 177 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 178 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 179 | { |
| 180 | register long a, b; |
| 181 | double x; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 182 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 183 | b = w->ob_ival; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 184 | x = (double)a * (double)b; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 185 | if (x > 0x7fffffff || x < (double) (long) 0x80000000) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 186 | return err_ovf("integer multiplication"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 187 | return newintobject(a * b); |
| 188 | } |
| 189 | |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 190 | static int |
| 191 | i_divmod(x, y, p_xdivy, p_xmody) |
| 192 | register intobject *x, *y; |
| 193 | long *p_xdivy, *p_xmody; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 194 | { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 195 | long xi = x->ob_ival; |
| 196 | long yi = y->ob_ival; |
| 197 | long xdivy, xmody; |
| 198 | |
| 199 | if (yi == 0) { |
| 200 | err_setstr(ZeroDivisionError, "integer division or modulo"); |
| 201 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 202 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 203 | if (yi < 0) { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 204 | if (xi < 0) |
| 205 | xdivy = -xi / -yi; |
| 206 | else |
| 207 | xdivy = - (xi / -yi); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 208 | } |
| 209 | else { |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 210 | if (xi < 0) |
| 211 | xdivy = - (-xi / yi); |
| 212 | else |
| 213 | xdivy = xi / yi; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 214 | } |
| 215 | xmody = xi - xdivy*yi; |
| 216 | if (xmody < 0 && yi > 0 || xmody > 0 && yi < 0) { |
| 217 | xmody += yi; |
| 218 | xdivy -= 1; |
| 219 | } |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 220 | *p_xdivy = xdivy; |
| 221 | *p_xmody = xmody; |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | static object * |
| 226 | int_div(x, y) |
| 227 | intobject *x; |
| 228 | intobject *y; |
| 229 | { |
| 230 | long d, m; |
| 231 | if (i_divmod(x, y, &d, &m) < 0) |
| 232 | return NULL; |
| 233 | return newintobject(d); |
| 234 | } |
| 235 | |
| 236 | static object * |
| 237 | int_mod(x, y) |
| 238 | intobject *x; |
| 239 | intobject *y; |
| 240 | { |
| 241 | long d, m; |
| 242 | if (i_divmod(x, y, &d, &m) < 0) |
| 243 | return NULL; |
Guido van Rossum | 719f5fa | 1992-03-27 17:31:02 +0000 | [diff] [blame] | 244 | return newintobject(m); |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | static object * |
| 248 | int_divmod(x, y) |
| 249 | intobject *x; |
| 250 | intobject *y; |
| 251 | { |
| 252 | object *v, *v0, *v1; |
| 253 | long d, m; |
| 254 | if (i_divmod(x, y, &d, &m) < 0) |
| 255 | return NULL; |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame^] | 256 | return mkvalue("(ll)", d, m); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 260 | int_pow(v, w) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 261 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 262 | intobject *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 263 | { |
| 264 | register long iv, iw, ix; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 265 | iv = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 266 | iw = w->ob_ival; |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 267 | if (iw < 0) { |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 268 | err_setstr(ValueError, "integer to the negative power"); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 269 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 270 | } |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 271 | ix = 1; |
| 272 | while (--iw >= 0) { |
| 273 | long prev = ix; |
| 274 | ix = ix * iv; |
| 275 | if (iv == 0) |
| 276 | break; /* 0 to some power -- avoid ix / 0 */ |
| 277 | if (ix / iv != prev) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 278 | return err_ovf("integer pow()"); |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 279 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 280 | return newintobject(ix); |
| 281 | } |
| 282 | |
| 283 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 284 | int_neg(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 285 | intobject *v; |
| 286 | { |
| 287 | register long a, x; |
| 288 | a = v->ob_ival; |
| 289 | x = -a; |
Guido van Rossum | 165e67e | 1990-10-14 20:02:26 +0000 | [diff] [blame] | 290 | if (a < 0 && x < 0) |
Guido van Rossum | 3a62845 | 1991-12-10 13:57:36 +0000 | [diff] [blame] | 291 | return err_ovf("integer negation"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 292 | return newintobject(x); |
| 293 | } |
| 294 | |
| 295 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 296 | int_pos(v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 297 | intobject *v; |
| 298 | { |
| 299 | INCREF(v); |
| 300 | return (object *)v; |
| 301 | } |
| 302 | |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 303 | static object * |
| 304 | int_abs(v) |
| 305 | intobject *v; |
| 306 | { |
| 307 | if (v->ob_ival >= 0) |
| 308 | return int_pos(v); |
| 309 | else |
| 310 | return int_neg(v); |
| 311 | } |
| 312 | |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 313 | static int |
| 314 | int_nonzero(v) |
| 315 | intobject *v; |
| 316 | { |
| 317 | return v->ob_ival != 0; |
| 318 | } |
| 319 | |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 320 | static object * |
| 321 | int_invert(v) |
| 322 | intobject *v; |
| 323 | { |
| 324 | return newintobject(~v->ob_ival); |
| 325 | } |
| 326 | |
| 327 | static object * |
| 328 | int_lshift(v, w) |
| 329 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 330 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 331 | { |
| 332 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 333 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 334 | b = w->ob_ival; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 335 | if (b < 0) { |
| 336 | err_setstr(ValueError, "negative shift count"); |
| 337 | return NULL; |
| 338 | } |
| 339 | if (a == 0 || b == 0) { |
| 340 | INCREF(v); |
| 341 | return (object *) v; |
| 342 | } |
| 343 | if (b >= 32) { |
| 344 | return newintobject(0L); |
| 345 | } |
| 346 | a = (unsigned long)a << b; |
| 347 | return newintobject(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | static object * |
| 351 | int_rshift(v, w) |
| 352 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 353 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 354 | { |
| 355 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 356 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 357 | b = w->ob_ival; |
Guido van Rossum | f3b351f | 1992-01-14 18:33:22 +0000 | [diff] [blame] | 358 | if (b < 0) { |
| 359 | err_setstr(ValueError, "negative shift count"); |
| 360 | return NULL; |
| 361 | } |
| 362 | if (a == 0 || b == 0) { |
| 363 | INCREF(v); |
| 364 | return (object *) v; |
| 365 | } |
| 366 | if (b >= 32) { |
| 367 | if (a < 0) |
| 368 | a = -1; |
| 369 | else |
| 370 | a = 0; |
| 371 | } |
| 372 | else { |
| 373 | if (a < 0) |
| 374 | a = ~( ~(unsigned long)a >> b ); |
| 375 | else |
| 376 | a = (unsigned long)a >> b; |
| 377 | } |
| 378 | return newintobject(a); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | static object * |
| 382 | int_and(v, w) |
| 383 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 384 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 385 | { |
| 386 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 387 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 388 | b = w->ob_ival; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 389 | return newintobject(a & b); |
| 390 | } |
| 391 | |
| 392 | static object * |
| 393 | int_xor(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 | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 400 | return newintobject(a ^ b); |
| 401 | } |
| 402 | |
| 403 | static object * |
| 404 | int_or(v, w) |
| 405 | intobject *v; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 406 | intobject *w; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 407 | { |
| 408 | register long a, b; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 409 | a = v->ob_ival; |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 410 | b = w->ob_ival; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 411 | return newintobject(a | b); |
| 412 | } |
| 413 | |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 414 | static object * |
| 415 | int_int(v) |
| 416 | object *v; |
| 417 | { |
| 418 | INCREF(v); |
| 419 | return v; |
| 420 | } |
| 421 | |
| 422 | static object * |
| 423 | int_long(v) |
| 424 | object *v; |
| 425 | { |
| 426 | long x = getintvalue(v); |
| 427 | return newlongobject(x); |
| 428 | } |
| 429 | |
| 430 | static object * |
| 431 | int_float(v) |
| 432 | object *v; |
| 433 | { |
| 434 | long x = getintvalue(v); |
| 435 | return newfloatobject((double)x); |
| 436 | } |
| 437 | |
| 438 | static object * |
| 439 | int_oct(v) |
| 440 | object *v; |
| 441 | { |
| 442 | char buf[20]; |
| 443 | long x = getintvalue(v); |
| 444 | if (x == 0) |
| 445 | strcpy(buf, "0"); |
| 446 | else if (x > 0) |
| 447 | sprintf(buf, "0%lo", x); |
| 448 | else |
| 449 | sprintf(buf, "-0%lo", -x); |
| 450 | return newstringobject(buf); |
| 451 | } |
| 452 | |
| 453 | static object * |
| 454 | int_hex(v) |
| 455 | object *v; |
| 456 | { |
| 457 | char buf[20]; |
| 458 | long x = getintvalue(v); |
| 459 | if (x >= 0) |
| 460 | sprintf(buf, "0x%lx", x); |
| 461 | else |
| 462 | sprintf(buf, "-0x%lx", -x); |
| 463 | return newstringobject(buf); |
| 464 | } |
| 465 | |
| 466 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 467 | static number_methods int_as_number = { |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 468 | int_add, /*nb_add*/ |
| 469 | int_sub, /*nb_subtract*/ |
| 470 | int_mul, /*nb_multiply*/ |
| 471 | int_div, /*nb_divide*/ |
Guido van Rossum | 2b16a6f | 1992-01-19 16:28:51 +0000 | [diff] [blame] | 472 | int_mod, /*nb_remainder*/ |
Guido van Rossum | 0046695 | 1991-05-05 20:08:27 +0000 | [diff] [blame] | 473 | int_divmod, /*nb_divmod*/ |
| 474 | int_pow, /*nb_power*/ |
| 475 | int_neg, /*nb_negative*/ |
| 476 | int_pos, /*nb_positive*/ |
| 477 | int_abs, /*nb_absolute*/ |
Guido van Rossum | 0bff015 | 1991-05-14 12:05:32 +0000 | [diff] [blame] | 478 | int_nonzero, /*nb_nonzero*/ |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 479 | int_invert, /*nb_invert*/ |
| 480 | int_lshift, /*nb_lshift*/ |
| 481 | int_rshift, /*nb_rshift*/ |
| 482 | int_and, /*nb_and*/ |
| 483 | int_xor, /*nb_xor*/ |
| 484 | int_or, /*nb_or*/ |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 485 | 0, /*nb_coerce*/ |
| 486 | int_int, /*nb_int*/ |
| 487 | int_long, /*nb_long*/ |
| 488 | int_float, /*nb_float*/ |
| 489 | int_oct, /*nb_oct*/ |
| 490 | int_hex, /*nb_hex*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 491 | }; |
| 492 | |
| 493 | typeobject Inttype = { |
| 494 | OB_HEAD_INIT(&Typetype) |
| 495 | 0, |
| 496 | "int", |
| 497 | sizeof(intobject), |
| 498 | 0, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 499 | int_dealloc, /*tp_dealloc*/ |
| 500 | int_print, /*tp_print*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 501 | 0, /*tp_getattr*/ |
| 502 | 0, /*tp_setattr*/ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 503 | int_compare, /*tp_compare*/ |
| 504 | int_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 505 | &int_as_number, /*tp_as_number*/ |
| 506 | 0, /*tp_as_sequence*/ |
| 507 | 0, /*tp_as_mapping*/ |
| 508 | }; |