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manual: fix typo: s/are/is/
[glibc.git] / stdlib / longlong.h
blobe7d6099c7ed44378a9ba5aac902e5704a39cdcf4
1 /* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
2 Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2002, 2003, 2004, 2005, 2006, 2009 Free Software Foundation, Inc.
4
5 This file is part of the GNU C Library.
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
11
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, write to the Free
19 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 02111-1307 USA. */
21
22 /* You have to define the following before including this file:
23
24 UWtype -- An unsigned type, default type for operations (typically a "word")
25 UHWtype -- An unsigned type, at least half the size of UWtype.
26 UDWtype -- An unsigned type, at least twice as large a UWtype
27 W_TYPE_SIZE -- size in bits of UWtype
28
29 UQItype -- Unsigned 8 bit type.
30 SItype, USItype -- Signed and unsigned 32 bit types.
31 DItype, UDItype -- Signed and unsigned 64 bit types.
32
33 On a 32 bit machine UWtype should typically be USItype;
34 on a 64 bit machine, UWtype should typically be UDItype. */
35
36 #define __BITS4 (W_TYPE_SIZE / 4)
37 #define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
38 #define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
39 #define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
40
41 #ifndef W_TYPE_SIZE
42 #define W_TYPE_SIZE 32
43 #define UWtype USItype
44 #define UHWtype USItype
45 #define UDWtype UDItype
46 #endif
47
48 extern const UQItype __clz_tab[256] attribute_hidden;
49
50 /* Define auxiliary asm macros.
51
52 1) umul_ppmm(high_prod, low_prod, multiplier, multiplicand) multiplies two
53 UWtype integers MULTIPLIER and MULTIPLICAND, and generates a two UWtype
54 word product in HIGH_PROD and LOW_PROD.
55
56 2) __umulsidi3(a,b) multiplies two UWtype integers A and B, and returns a
57 UDWtype product. This is just a variant of umul_ppmm.
58
59 3) udiv_qrnnd(quotient, remainder, high_numerator, low_numerator,
60 denominator) divides a UDWtype, composed by the UWtype integers
61 HIGH_NUMERATOR and LOW_NUMERATOR, by DENOMINATOR and places the quotient
62 in QUOTIENT and the remainder in REMAINDER. HIGH_NUMERATOR must be less
63 than DENOMINATOR for correct operation. If, in addition, the most
64 significant bit of DENOMINATOR must be 1, then the pre-processor symbol
65 UDIV_NEEDS_NORMALIZATION is defined to 1.
66
67 4) sdiv_qrnnd(quotient, remainder, high_numerator, low_numerator,
68 denominator). Like udiv_qrnnd but the numbers are signed. The quotient
69 is rounded towards 0.
70
71 5) count_leading_zeros(count, x) counts the number of zero-bits from the
72 msb to the first nonzero bit in the UWtype X. This is the number of
73 steps X needs to be shifted left to set the msb. Undefined for X == 0,
74 unless the symbol COUNT_LEADING_ZEROS_0 is defined to some value.
75
76 6) count_trailing_zeros(count, x) like count_leading_zeros, but counts
77 from the least significant end.
78
79 7) add_ssaaaa(high_sum, low_sum, high_addend_1, low_addend_1,
80 high_addend_2, low_addend_2) adds two UWtype integers, composed by
81 HIGH_ADDEND_1 and LOW_ADDEND_1, and HIGH_ADDEND_2 and LOW_ADDEND_2
82 respectively. The result is placed in HIGH_SUM and LOW_SUM. Overflow
83 (i.e. carry out) is not stored anywhere, and is lost.
84
85 8) sub_ddmmss(high_difference, low_difference, high_minuend, low_minuend,
86 high_subtrahend, low_subtrahend) subtracts two two-word UWtype integers,
87 composed by HIGH_MINUEND_1 and LOW_MINUEND_1, and HIGH_SUBTRAHEND_2 and
88 LOW_SUBTRAHEND_2 respectively. The result is placed in HIGH_DIFFERENCE
89 and LOW_DIFFERENCE. Overflow (i.e. carry out) is not stored anywhere,
90 and is lost.
91
92 If any of these macros are left undefined for a particular CPU,
93 C macros are used. */
94
95 /* The CPUs come in alphabetical order below.
96
97 Please add support for more CPUs here, or improve the current support
98 for the CPUs below!
99 (E.g. WE32100, IBM360.) */
100
101 #if defined (__GNUC__) && !defined (NO_ASM)
102
103 /* We sometimes need to clobber "cc" with gcc2, but that would not be
104 understood by gcc1. Use cpp to avoid major code duplication. */
105 #if __GNUC__ < 2
106 #define __CLOBBER_CC
107 #define __AND_CLOBBER_CC
108 #else /* __GNUC__ >= 2 */
109 #define __CLOBBER_CC : "cc"
110 #define __AND_CLOBBER_CC , "cc"
111 #endif /* __GNUC__ < 2 */
112
113 #if defined (__alpha) && W_TYPE_SIZE == 64
114 #define umul_ppmm(ph, pl, m0, m1) \
115 do { \
116 UDItype __m0 = (m0), __m1 = (m1); \
117 (ph) = __builtin_alpha_umulh (__m0, __m1); \
118 (pl) = __m0 * __m1; \
119 } while (0)
120 #define UMUL_TIME 46
121 #ifndef LONGLONG_STANDALONE
122 #define udiv_qrnnd(q, r, n1, n0, d) \
123 do { UDItype __r; \
124 (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \
125 (r) = __r; \
126 } while (0)
127 extern UDItype __udiv_qrnnd (UDItype *, UDItype, UDItype, UDItype);
128 #define UDIV_TIME 220
129 #endif /* LONGLONG_STANDALONE */
130 #ifdef __alpha_cix__
131 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clzl (X))
132 #define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzl (X))
133 #define COUNT_LEADING_ZEROS_0 64
134 #else
135 #define count_leading_zeros(COUNT,X) \
136 do { \
137 UDItype __xr = (X), __t, __a; \
138 __t = __builtin_alpha_cmpbge (0, __xr); \
139 __a = __clz_tab[__t ^ 0xff] - 1; \
140 __t = __builtin_alpha_extbl (__xr, __a); \
141 (COUNT) = 64 - (__clz_tab[__t] + __a*8); \
142 } while (0)
143 #define count_trailing_zeros(COUNT,X) \
144 do { \
145 UDItype __xr = (X), __t, __a; \
146 __t = __builtin_alpha_cmpbge (0, __xr); \
147 __t = ~__t & -~__t; \
148 __a = ((__t & 0xCC) != 0) * 2; \
149 __a += ((__t & 0xF0) != 0) * 4; \
150 __a += ((__t & 0xAA) != 0); \
151 __t = __builtin_alpha_extbl (__xr, __a); \
152 __a <<= 3; \
153 __t &= -__t; \
154 __a += ((__t & 0xCC) != 0) * 2; \
155 __a += ((__t & 0xF0) != 0) * 4; \
156 __a += ((__t & 0xAA) != 0); \
157 (COUNT) = __a; \
158 } while (0)
159 #endif /* __alpha_cix__ */
160 #endif /* __alpha */
161
162 #if defined (__arc__) && W_TYPE_SIZE == 32
163 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
164 __asm__ ("add.f %1, %4, %5\n\tadc %0, %2, %3" \
165 : "=r" ((USItype) (sh)), \
166 "=&r" ((USItype) (sl)) \
167 : "%r" ((USItype) (ah)), \
168 "rIJ" ((USItype) (bh)), \
169 "%r" ((USItype) (al)), \
170 "rIJ" ((USItype) (bl)))
171 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
172 __asm__ ("sub.f %1, %4, %5\n\tsbc %0, %2, %3" \
173 : "=r" ((USItype) (sh)), \
174 "=&r" ((USItype) (sl)) \
175 : "r" ((USItype) (ah)), \
176 "rIJ" ((USItype) (bh)), \
177 "r" ((USItype) (al)), \
178 "rIJ" ((USItype) (bl)))
179 /* Call libgcc routine. */
180 #define umul_ppmm(w1, w0, u, v) \
181 do { \
182 DWunion __w; \
183 __w.ll = __umulsidi3 (u, v); \
184 w1 = __w.s.high; \
185 w0 = __w.s.low; \
186 } while (0)
187 #define __umulsidi3 __umulsidi3
188 UDItype __umulsidi3 (USItype, USItype);
189 #endif
190
191 #if defined (__arm__) && !defined (__thumb__) && W_TYPE_SIZE == 32
192 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
193 __asm__ ("adds %1, %4, %5\n\tadc %0, %2, %3" \
194 : "=r" ((USItype) (sh)), \
195 "=&r" ((USItype) (sl)) \
196 : "%r" ((USItype) (ah)), \
197 "rI" ((USItype) (bh)), \
198 "%r" ((USItype) (al)), \
199 "rI" ((USItype) (bl)) __CLOBBER_CC)
200 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
201 __asm__ ("subs %1, %4, %5\n\tsbc %0, %2, %3" \
202 : "=r" ((USItype) (sh)), \
203 "=&r" ((USItype) (sl)) \
204 : "r" ((USItype) (ah)), \
205 "rI" ((USItype) (bh)), \
206 "r" ((USItype) (al)), \
207 "rI" ((USItype) (bl)) __CLOBBER_CC)
208 #define umul_ppmm(xh, xl, a, b) \
209 {register USItype __t0, __t1, __t2; \
210 __asm__ ("%@ Inlined umul_ppmm\n" \
211 " mov %2, %5, lsr #16\n" \
212 " mov %0, %6, lsr #16\n" \
213 " bic %3, %5, %2, lsl #16\n" \
214 " bic %4, %6, %0, lsl #16\n" \
215 " mul %1, %3, %4\n" \
216 " mul %4, %2, %4\n" \
217 " mul %3, %0, %3\n" \
218 " mul %0, %2, %0\n" \
219 " adds %3, %4, %3\n" \
220 " addcs %0, %0, #65536\n" \
221 " adds %1, %1, %3, lsl #16\n" \
222 " adc %0, %0, %3, lsr #16" \
223 : "=&r" ((USItype) (xh)), \
224 "=r" ((USItype) (xl)), \
225 "=&r" (__t0), "=&r" (__t1), "=r" (__t2) \
226 : "r" ((USItype) (a)), \
227 "r" ((USItype) (b)) __CLOBBER_CC );}
228 #define UMUL_TIME 20
229 #define UDIV_TIME 100
230 #endif /* __arm__ */
231
232 #if defined(__arm__)
233 /* Let gcc decide how best to implement count_leading_zeros. */
234 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
235 #define COUNT_LEADING_ZEROS_0 32
236 #endif
237
238 #if defined (__CRIS__) && __CRIS_arch_version >= 3
239 #define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
240 #if __CRIS_arch_version >= 8
241 #define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
242 #endif
243 #endif /* __CRIS__ */
244
245 #if defined (__hppa) && W_TYPE_SIZE == 32
246 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
247 __asm__ ("add %4,%5,%1\n\taddc %2,%3,%0" \
248 : "=r" ((USItype) (sh)), \
249 "=&r" ((USItype) (sl)) \
250 : "%rM" ((USItype) (ah)), \
251 "rM" ((USItype) (bh)), \
252 "%rM" ((USItype) (al)), \
253 "rM" ((USItype) (bl)))
254 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
255 __asm__ ("sub %4,%5,%1\n\tsubb %2,%3,%0" \
256 : "=r" ((USItype) (sh)), \
257 "=&r" ((USItype) (sl)) \
258 : "rM" ((USItype) (ah)), \
259 "rM" ((USItype) (bh)), \
260 "rM" ((USItype) (al)), \
261 "rM" ((USItype) (bl)))
262 #if defined (_PA_RISC1_1)
263 #define umul_ppmm(w1, w0, u, v) \
264 do { \
265 union \
266 { \
267 UDItype __f; \
268 struct {USItype __w1, __w0;} __w1w0; \
269 } __t; \
270 __asm__ ("xmpyu %1,%2,%0" \
271 : "=x" (__t.__f) \
272 : "x" ((USItype) (u)), \
273 "x" ((USItype) (v))); \
274 (w1) = __t.__w1w0.__w1; \
275 (w0) = __t.__w1w0.__w0; \
276 } while (0)
277 #define UMUL_TIME 8
278 #else
279 #define UMUL_TIME 30
280 #endif
281 #define UDIV_TIME 40
282 #define count_leading_zeros(count, x) \
283 do { \
284 USItype __tmp; \
285 __asm__ ( \
286 "ldi 1,%0\n" \
287 " extru,= %1,15,16,%%r0 ; Bits 31..16 zero?\n" \
288 " extru,tr %1,15,16,%1 ; No. Shift down, skip add.\n"\
289 " ldo 16(%0),%0 ; Yes. Perform add.\n" \
290 " extru,= %1,23,8,%%r0 ; Bits 15..8 zero?\n" \
291 " extru,tr %1,23,8,%1 ; No. Shift down, skip add.\n"\
292 " ldo 8(%0),%0 ; Yes. Perform add.\n" \
293 " extru,= %1,27,4,%%r0 ; Bits 7..4 zero?\n" \
294 " extru,tr %1,27,4,%1 ; No. Shift down, skip add.\n"\
295 " ldo 4(%0),%0 ; Yes. Perform add.\n" \
296 " extru,= %1,29,2,%%r0 ; Bits 3..2 zero?\n" \
297 " extru,tr %1,29,2,%1 ; No. Shift down, skip add.\n"\
298 " ldo 2(%0),%0 ; Yes. Perform add.\n" \
299 " extru %1,30,1,%1 ; Extract bit 1.\n" \
300 " sub %0,%1,%0 ; Subtract it.\n" \
301 : "=r" (count), "=r" (__tmp) : "1" (x)); \
302 } while (0)
303 #endif
304
305 #if (defined (__i370__) || defined (__s390__) || defined (__mvs__)) && W_TYPE_SIZE == 32
306 #define smul_ppmm(xh, xl, m0, m1) \
307 do { \
308 union {DItype __ll; \
309 struct {USItype __h, __l;} __i; \
310 } __x; \
311 __asm__ ("lr %N0,%1\n\tmr %0,%2" \
312 : "=&r" (__x.__ll) \
313 : "r" (m0), "r" (m1)); \
314 (xh) = __x.__i.__h; (xl) = __x.__i.__l; \
315 } while (0)
316 #define sdiv_qrnnd(q, r, n1, n0, d) \
317 do { \
318 union {DItype __ll; \
319 struct {USItype __h, __l;} __i; \
320 } __x; \
321 __x.__i.__h = n1; __x.__i.__l = n0; \
322 __asm__ ("dr %0,%2" \
323 : "=r" (__x.__ll) \
324 : "0" (__x.__ll), "r" (d)); \
325 (q) = __x.__i.__l; (r) = __x.__i.__h; \
326 } while (0)
327 #endif
328
329 #if (defined (__i386__) || defined (__i486__)) && W_TYPE_SIZE == 32
330 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
331 __asm__ ("add{l} {%5,%1|%1,%5}\n\tadc{l} {%3,%0|%0,%3}" \
332 : "=r" ((USItype) (sh)), \
333 "=&r" ((USItype) (sl)) \
334 : "%0" ((USItype) (ah)), \
335 "g" ((USItype) (bh)), \
336 "%1" ((USItype) (al)), \
337 "g" ((USItype) (bl)))
338 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
339 __asm__ ("sub{l} {%5,%1|%1,%5}\n\tsbb{l} {%3,%0|%0,%3}" \
340 : "=r" ((USItype) (sh)), \
341 "=&r" ((USItype) (sl)) \
342 : "0" ((USItype) (ah)), \
343 "g" ((USItype) (bh)), \
344 "1" ((USItype) (al)), \
345 "g" ((USItype) (bl)))
346 #define umul_ppmm(w1, w0, u, v) \
347 __asm__ ("mul{l} %3" \
348 : "=a" ((USItype) (w0)), \
349 "=d" ((USItype) (w1)) \
350 : "%0" ((USItype) (u)), \
351 "rm" ((USItype) (v)))
352 #define udiv_qrnnd(q, r, n1, n0, dv) \
353 __asm__ ("div{l} %4" \
354 : "=a" ((USItype) (q)), \
355 "=d" ((USItype) (r)) \
356 : "0" ((USItype) (n0)), \
357 "1" ((USItype) (n1)), \
358 "rm" ((USItype) (dv)))
359 #define count_leading_zeros(count, x) ((count) = __builtin_clz (x))
360 #define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x))
361 #define UMUL_TIME 40
362 #define UDIV_TIME 40
363 #endif /* 80x86 */
364
365 #if (defined (__x86_64__) || defined (__i386__)) && W_TYPE_SIZE == 64
366 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
367 __asm__ ("add{q} {%5,%1|%1,%5}\n\tadc{q} {%3,%0|%0,%3}" \
368 : "=r" ((UDItype) (sh)), \
369 "=&r" ((UDItype) (sl)) \
370 : "%0" ((UDItype) (ah)), \
371 "rme" ((UDItype) (bh)), \
372 "%1" ((UDItype) (al)), \
373 "rme" ((UDItype) (bl)))
374 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
375 __asm__ ("sub{q} {%5,%1|%1,%5}\n\tsbb{q} {%3,%0|%0,%3}" \
376 : "=r" ((UDItype) (sh)), \
377 "=&r" ((UDItype) (sl)) \
378 : "0" ((UDItype) (ah)), \
379 "rme" ((UDItype) (bh)), \
380 "1" ((UDItype) (al)), \
381 "rme" ((UDItype) (bl)))
382 #define umul_ppmm(w1, w0, u, v) \
383 __asm__ ("mul{q} %3" \
384 : "=a" ((UDItype) (w0)), \
385 "=d" ((UDItype) (w1)) \
386 : "%0" ((UDItype) (u)), \
387 "rm" ((UDItype) (v)))
388 #define udiv_qrnnd(q, r, n1, n0, dv) \
389 __asm__ ("div{q} %4" \
390 : "=a" ((UDItype) (q)), \
391 "=d" ((UDItype) (r)) \
392 : "0" ((UDItype) (n0)), \
393 "1" ((UDItype) (n1)), \
394 "rm" ((UDItype) (dv)))
395 #define count_leading_zeros(count, x) ((count) = __builtin_clzl (x))
396 #define count_trailing_zeros(count, x) ((count) = __builtin_ctzl (x))
397 #define UMUL_TIME 40
398 #define UDIV_TIME 40
399 #endif /* x86_64 */
400
401 #if defined (__i960__) && W_TYPE_SIZE == 32
402 #define umul_ppmm(w1, w0, u, v) \
403 ({union {UDItype __ll; \
404 struct {USItype __l, __h;} __i; \
405 } __xx; \
406 __asm__ ("emul %2,%1,%0" \
407 : "=d" (__xx.__ll) \
408 : "%dI" ((USItype) (u)), \
409 "dI" ((USItype) (v))); \
410 (w1) = __xx.__i.__h; (w0) = __xx.__i.__l;})
411 #define __umulsidi3(u, v) \
412 ({UDItype __w; \
413 __asm__ ("emul %2,%1,%0" \
414 : "=d" (__w) \
415 : "%dI" ((USItype) (u)), \
416 "dI" ((USItype) (v))); \
417 __w; })
418 #endif /* __i960__ */
419
420 #if defined (__M32R__) && W_TYPE_SIZE == 32
421 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
422 /* The cmp clears the condition bit. */ \
423 __asm__ ("cmp %0,%0\n\taddx %1,%5\n\taddx %0,%3" \
424 : "=r" ((USItype) (sh)), \
425 "=&r" ((USItype) (sl)) \
426 : "0" ((USItype) (ah)), \
427 "r" ((USItype) (bh)), \
428 "1" ((USItype) (al)), \
429 "r" ((USItype) (bl)) \
430 : "cbit")
431 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
432 /* The cmp clears the condition bit. */ \
433 __asm__ ("cmp %0,%0\n\tsubx %1,%5\n\tsubx %0,%3" \
434 : "=r" ((USItype) (sh)), \
435 "=&r" ((USItype) (sl)) \
436 : "0" ((USItype) (ah)), \
437 "r" ((USItype) (bh)), \
438 "1" ((USItype) (al)), \
439 "r" ((USItype) (bl)) \
440 : "cbit")
441 #endif /* __M32R__ */
442
443 #if defined (__mc68000__) && W_TYPE_SIZE == 32
444 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
445 __asm__ ("add%.l %5,%1\n\taddx%.l %3,%0" \
446 : "=d" ((USItype) (sh)), \
447 "=&d" ((USItype) (sl)) \
448 : "%0" ((USItype) (ah)), \
449 "d" ((USItype) (bh)), \
450 "%1" ((USItype) (al)), \
451 "g" ((USItype) (bl)))
452 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
453 __asm__ ("sub%.l %5,%1\n\tsubx%.l %3,%0" \
454 : "=d" ((USItype) (sh)), \
455 "=&d" ((USItype) (sl)) \
456 : "0" ((USItype) (ah)), \
457 "d" ((USItype) (bh)), \
458 "1" ((USItype) (al)), \
459 "g" ((USItype) (bl)))
460
461 /* The '020, '030, '040, '060 and CPU32 have 32x32->64 and 64/32->32q-32r. */
462 #if (defined (__mc68020__) && !defined (__mc68060__))
463 #define umul_ppmm(w1, w0, u, v) \
464 __asm__ ("mulu%.l %3,%1:%0" \
465 : "=d" ((USItype) (w0)), \
466 "=d" ((USItype) (w1)) \
467 : "%0" ((USItype) (u)), \
468 "dmi" ((USItype) (v)))
469 #define UMUL_TIME 45
470 #define udiv_qrnnd(q, r, n1, n0, d) \
471 __asm__ ("divu%.l %4,%1:%0" \
472 : "=d" ((USItype) (q)), \
473 "=d" ((USItype) (r)) \
474 : "0" ((USItype) (n0)), \
475 "1" ((USItype) (n1)), \
476 "dmi" ((USItype) (d)))
477 #define UDIV_TIME 90
478 #define sdiv_qrnnd(q, r, n1, n0, d) \
479 __asm__ ("divs%.l %4,%1:%0" \
480 : "=d" ((USItype) (q)), \
481 "=d" ((USItype) (r)) \
482 : "0" ((USItype) (n0)), \
483 "1" ((USItype) (n1)), \
484 "dmi" ((USItype) (d)))
485
486 #elif defined (__mcoldfire__) /* not mc68020 */
487
488 #define umul_ppmm(xh, xl, a, b) \
489 __asm__ ("| Inlined umul_ppmm\n" \
490 " move%.l %2,%/d0\n" \
491 " move%.l %3,%/d1\n" \
492 " move%.l %/d0,%/d2\n" \
493 " swap %/d0\n" \
494 " move%.l %/d1,%/d3\n" \
495 " swap %/d1\n" \
496 " move%.w %/d2,%/d4\n" \
497 " mulu %/d3,%/d4\n" \
498 " mulu %/d1,%/d2\n" \
499 " mulu %/d0,%/d3\n" \
500 " mulu %/d0,%/d1\n" \
501 " move%.l %/d4,%/d0\n" \
502 " clr%.w %/d0\n" \
503 " swap %/d0\n" \
504 " add%.l %/d0,%/d2\n" \
505 " add%.l %/d3,%/d2\n" \
506 " jcc 1f\n" \
507 " add%.l %#65536,%/d1\n" \
508 "1: swap %/d2\n" \
509 " moveq %#0,%/d0\n" \
510 " move%.w %/d2,%/d0\n" \
511 " move%.w %/d4,%/d2\n" \
512 " move%.l %/d2,%1\n" \
513 " add%.l %/d1,%/d0\n" \
514 " move%.l %/d0,%0" \
515 : "=g" ((USItype) (xh)), \
516 "=g" ((USItype) (xl)) \
517 : "g" ((USItype) (a)), \
518 "g" ((USItype) (b)) \
519 : "d0", "d1", "d2", "d3", "d4")
520 #define UMUL_TIME 100
521 #define UDIV_TIME 400
522 #else /* not ColdFire */
523 /* %/ inserts REGISTER_PREFIX, %# inserts IMMEDIATE_PREFIX. */
524 #define umul_ppmm(xh, xl, a, b) \
525 __asm__ ("| Inlined umul_ppmm\n" \
526 " move%.l %2,%/d0\n" \
527 " move%.l %3,%/d1\n" \
528 " move%.l %/d0,%/d2\n" \
529 " swap %/d0\n" \
530 " move%.l %/d1,%/d3\n" \
531 " swap %/d1\n" \
532 " move%.w %/d2,%/d4\n" \
533 " mulu %/d3,%/d4\n" \
534 " mulu %/d1,%/d2\n" \
535 " mulu %/d0,%/d3\n" \
536 " mulu %/d0,%/d1\n" \
537 " move%.l %/d4,%/d0\n" \
538 " eor%.w %/d0,%/d0\n" \
539 " swap %/d0\n" \
540 " add%.l %/d0,%/d2\n" \
541 " add%.l %/d3,%/d2\n" \
542 " jcc 1f\n" \
543 " add%.l %#65536,%/d1\n" \
544 "1: swap %/d2\n" \
545 " moveq %#0,%/d0\n" \
546 " move%.w %/d2,%/d0\n" \
547 " move%.w %/d4,%/d2\n" \
548 " move%.l %/d2,%1\n" \
549 " add%.l %/d1,%/d0\n" \
550 " move%.l %/d0,%0" \
551 : "=g" ((USItype) (xh)), \
552 "=g" ((USItype) (xl)) \
553 : "g" ((USItype) (a)), \
554 "g" ((USItype) (b)) \
555 : "d0", "d1", "d2", "d3", "d4")
556 #define UMUL_TIME 100
557 #define UDIV_TIME 400
558
559 #endif /* not mc68020 */
560
561 /* The '020, '030, '040 and '060 have bitfield insns.
562 cpu32 disguises as a 68020, but lacks them. */
563 #if defined (__mc68020__) && !defined (__mcpu32__)
564 #define count_leading_zeros(count, x) \
565 __asm__ ("bfffo %1{%b2:%b2},%0" \
566 : "=d" ((USItype) (count)) \
567 : "od" ((USItype) (x)), "n" (0))
568 /* Some ColdFire architectures have a ff1 instruction supported via
569 __builtin_clz. */
570 #elif defined (__mcfisaaplus__) || defined (__mcfisac__)
571 #define count_leading_zeros(count,x) ((count) = __builtin_clz (x))
572 #define COUNT_LEADING_ZEROS_0 32
573 #endif
574 #endif /* mc68000 */
575
576 #if defined (__m88000__) && W_TYPE_SIZE == 32
577 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
578 __asm__ ("addu.co %1,%r4,%r5\n\taddu.ci %0,%r2,%r3" \
579 : "=r" ((USItype) (sh)), \
580 "=&r" ((USItype) (sl)) \
581 : "%rJ" ((USItype) (ah)), \
582 "rJ" ((USItype) (bh)), \
583 "%rJ" ((USItype) (al)), \
584 "rJ" ((USItype) (bl)))
585 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
586 __asm__ ("subu.co %1,%r4,%r5\n\tsubu.ci %0,%r2,%r3" \
587 : "=r" ((USItype) (sh)), \
588 "=&r" ((USItype) (sl)) \
589 : "rJ" ((USItype) (ah)), \
590 "rJ" ((USItype) (bh)), \
591 "rJ" ((USItype) (al)), \
592 "rJ" ((USItype) (bl)))
593 #define count_leading_zeros(count, x) \
594 do { \
595 USItype __cbtmp; \
596 __asm__ ("ff1 %0,%1" \
597 : "=r" (__cbtmp) \
598 : "r" ((USItype) (x))); \
599 (count) = __cbtmp ^ 31; \
600 } while (0)
601 #define COUNT_LEADING_ZEROS_0 63 /* sic */
602 #if defined (__mc88110__)
603 #define umul_ppmm(wh, wl, u, v) \
604 do { \
605 union {UDItype __ll; \
606 struct {USItype __h, __l;} __i; \
607 } __xx; \
608 __asm__ ("mulu.d %0,%1,%2" \
609 : "=r" (__xx.__ll) \
610 : "r" ((USItype) (u)), \
611 "r" ((USItype) (v))); \
612 (wh) = __xx.__i.__h; \
613 (wl) = __xx.__i.__l; \
614 } while (0)
615 #define udiv_qrnnd(q, r, n1, n0, d) \
616 ({union {UDItype __ll; \
617 struct {USItype __h, __l;} __i; \
618 } __xx; \
619 USItype __q; \
620 __xx.__i.__h = (n1); __xx.__i.__l = (n0); \
621 __asm__ ("divu.d %0,%1,%2" \
622 : "=r" (__q) \
623 : "r" (__xx.__ll), \
624 "r" ((USItype) (d))); \
625 (r) = (n0) - __q * (d); (q) = __q; })
626 #define UMUL_TIME 5
627 #define UDIV_TIME 25
628 #else
629 #define UMUL_TIME 17
630 #define UDIV_TIME 150
631 #endif /* __mc88110__ */
632 #endif /* __m88000__ */
633
634 #if defined (__mips__) && W_TYPE_SIZE == 32
635 #define umul_ppmm(w1, w0, u, v) \
636 do { \
637 UDItype __x = (UDItype) (USItype) (u) * (USItype) (v); \
638 (w1) = (USItype) (__x >> 32); \
639 (w0) = (USItype) (__x); \
640 } while (0)
641 #define UMUL_TIME 10
642 #define UDIV_TIME 100
643
644 #if (__mips == 32 || __mips == 64) && ! __mips16
645 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
646 #define COUNT_LEADING_ZEROS_0 32
647 #endif
648 #endif /* __mips__ */
649
650 #if defined (__ns32000__) && W_TYPE_SIZE == 32
651 #define umul_ppmm(w1, w0, u, v) \
652 ({union {UDItype __ll; \
653 struct {USItype __l, __h;} __i; \
654 } __xx; \
655 __asm__ ("meid %2,%0" \
656 : "=g" (__xx.__ll) \
657 : "%0" ((USItype) (u)), \
658 "g" ((USItype) (v))); \
659 (w1) = __xx.__i.__h; (w0) = __xx.__i.__l;})
660 #define __umulsidi3(u, v) \
661 ({UDItype __w; \
662 __asm__ ("meid %2,%0" \
663 : "=g" (__w) \
664 : "%0" ((USItype) (u)), \
665 "g" ((USItype) (v))); \
666 __w; })
667 #define udiv_qrnnd(q, r, n1, n0, d) \
668 ({union {UDItype __ll; \
669 struct {USItype __l, __h;} __i; \
670 } __xx; \
671 __xx.__i.__h = (n1); __xx.__i.__l = (n0); \
672 __asm__ ("deid %2,%0" \
673 : "=g" (__xx.__ll) \
674 : "0" (__xx.__ll), \
675 "g" ((USItype) (d))); \
676 (r) = __xx.__i.__l; (q) = __xx.__i.__h; })
677 #define count_trailing_zeros(count,x) \
678 do { \
679 __asm__ ("ffsd %2,%0" \
680 : "=r" ((USItype) (count)) \
681 : "0" ((USItype) 0), \
682 "r" ((USItype) (x))); \
683 } while (0)
684 #endif /* __ns32000__ */
685
686 /* FIXME: We should test _IBMR2 here when we add assembly support for the
687 system vendor compilers.
688 FIXME: What's needed for gcc PowerPC VxWorks? __vxworks__ is not good
689 enough, since that hits ARM and m68k too. */
690 #if (defined (_ARCH_PPC) /* AIX */ \
691 || defined (_ARCH_PWR) /* AIX */ \
692 || defined (_ARCH_COM) /* AIX */ \
693 || defined (__powerpc__) /* gcc */ \
694 || defined (__POWERPC__) /* BEOS */ \
695 || defined (__ppc__) /* Darwin */ \
696 || (defined (PPC) && ! defined (CPU_FAMILY)) /* gcc 2.7.x GNU&SysV */ \
697 || (defined (PPC) && defined (CPU_FAMILY) /* VxWorks */ \
698 && CPU_FAMILY == PPC) \
699 ) && W_TYPE_SIZE == 32
700 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
701 do { \
702 if (__builtin_constant_p (bh) && (bh) == 0) \
703 __asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{aze|addze} %0,%2" \
704 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
705 else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0) \
706 __asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{ame|addme} %0,%2" \
707 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
708 else \
709 __asm__ ("{a%I5|add%I5c} %1,%4,%5\n\t{ae|adde} %0,%2,%3" \
710 : "=r" (sh), "=&r" (sl) \
711 : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl)); \
712 } while (0)
713 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
714 do { \
715 if (__builtin_constant_p (ah) && (ah) == 0) \
716 __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfze|subfze} %0,%2" \
717 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
718 else if (__builtin_constant_p (ah) && (ah) == ~(USItype) 0) \
719 __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfme|subfme} %0,%2" \
720 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
721 else if (__builtin_constant_p (bh) && (bh) == 0) \
722 __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{ame|addme} %0,%2" \
723 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
724 else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0) \
725 __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{aze|addze} %0,%2" \
726 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
727 else \
728 __asm__ ("{sf%I4|subf%I4c} %1,%5,%4\n\t{sfe|subfe} %0,%3,%2" \
729 : "=r" (sh), "=&r" (sl) \
730 : "r" (ah), "r" (bh), "rI" (al), "r" (bl)); \
731 } while (0)
732 #define count_leading_zeros(count, x) \
733 __asm__ ("{cntlz|cntlzw} %0,%1" : "=r" (count) : "r" (x))
734 #define COUNT_LEADING_ZEROS_0 32
735 #if defined (_ARCH_PPC) || defined (__powerpc__) || defined (__POWERPC__) \
736 || defined (__ppc__) \
737 || (defined (PPC) && ! defined (CPU_FAMILY)) /* gcc 2.7.x GNU&SysV */ \
738 || (defined (PPC) && defined (CPU_FAMILY) /* VxWorks */ \
739 && CPU_FAMILY == PPC)
740 #define umul_ppmm(ph, pl, m0, m1) \
741 do { \
742 USItype __m0 = (m0), __m1 = (m1); \
743 __asm__ ("mulhwu %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
744 (pl) = __m0 * __m1; \
745 } while (0)
746 #define UMUL_TIME 15
747 #define smul_ppmm(ph, pl, m0, m1) \
748 do { \
749 SItype __m0 = (m0), __m1 = (m1); \
750 __asm__ ("mulhw %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
751 (pl) = __m0 * __m1; \
752 } while (0)
753 #define SMUL_TIME 14
754 #define UDIV_TIME 120
755 #elif defined (_ARCH_PWR)
756 #define UMUL_TIME 8
757 #define smul_ppmm(xh, xl, m0, m1) \
758 __asm__ ("mul %0,%2,%3" : "=r" (xh), "=q" (xl) : "r" (m0), "r" (m1))
759 #define SMUL_TIME 4
760 #define sdiv_qrnnd(q, r, nh, nl, d) \
761 __asm__ ("div %0,%2,%4" : "=r" (q), "=q" (r) : "r" (nh), "1" (nl), "r" (d))
762 #define UDIV_TIME 100
763 #endif
764 #endif /* 32-bit POWER architecture variants. */
765
766 /* We should test _IBMR2 here when we add assembly support for the system
767 vendor compilers. */
768 #if (defined (_ARCH_PPC64) || defined (__powerpc64__)) && W_TYPE_SIZE == 64
769 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
770 do { \
771 if (__builtin_constant_p (bh) && (bh) == 0) \
772 __asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{aze|addze} %0,%2" \
773 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
774 else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0) \
775 __asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{ame|addme} %0,%2" \
776 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
777 else \
778 __asm__ ("{a%I5|add%I5c} %1,%4,%5\n\t{ae|adde} %0,%2,%3" \
779 : "=r" (sh), "=&r" (sl) \
780 : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl)); \
781 } while (0)
782 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
783 do { \
784 if (__builtin_constant_p (ah) && (ah) == 0) \
785 __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfze|subfze} %0,%2" \
786 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
787 else if (__builtin_constant_p (ah) && (ah) == ~(UDItype) 0) \
788 __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfme|subfme} %0,%2" \
789 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
790 else if (__builtin_constant_p (bh) && (bh) == 0) \
791 __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{ame|addme} %0,%2" \
792 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
793 else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0) \
794 __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{aze|addze} %0,%2" \
795 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
796 else \
797 __asm__ ("{sf%I4|subf%I4c} %1,%5,%4\n\t{sfe|subfe} %0,%3,%2" \
798 : "=r" (sh), "=&r" (sl) \
799 : "r" (ah), "r" (bh), "rI" (al), "r" (bl)); \
800 } while (0)
801 #define count_leading_zeros(count, x) \
802 __asm__ ("cntlzd %0,%1" : "=r" (count) : "r" (x))
803 #define COUNT_LEADING_ZEROS_0 64
804 #define umul_ppmm(ph, pl, m0, m1) \
805 do { \
806 UDItype __m0 = (m0), __m1 = (m1); \
807 __asm__ ("mulhdu %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
808 (pl) = __m0 * __m1; \
809 } while (0)
810 #define UMUL_TIME 15
811 #define smul_ppmm(ph, pl, m0, m1) \
812 do { \
813 DItype __m0 = (m0), __m1 = (m1); \
814 __asm__ ("mulhd %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
815 (pl) = __m0 * __m1; \
816 } while (0)
817 #define SMUL_TIME 14 /* ??? */
818 #define UDIV_TIME 120 /* ??? */
819 #endif /* 64-bit PowerPC. */
820
821 #if defined (__ibm032__) /* RT/ROMP */ && W_TYPE_SIZE == 32
822 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
823 __asm__ ("a %1,%5\n\tae %0,%3" \
824 : "=r" ((USItype) (sh)), \
825 "=&r" ((USItype) (sl)) \
826 : "%0" ((USItype) (ah)), \
827 "r" ((USItype) (bh)), \
828 "%1" ((USItype) (al)), \
829 "r" ((USItype) (bl)))
830 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
831 __asm__ ("s %1,%5\n\tse %0,%3" \
832 : "=r" ((USItype) (sh)), \
833 "=&r" ((USItype) (sl)) \
834 : "0" ((USItype) (ah)), \
835 "r" ((USItype) (bh)), \
836 "1" ((USItype) (al)), \
837 "r" ((USItype) (bl)))
838 #define umul_ppmm(ph, pl, m0, m1) \
839 do { \
840 USItype __m0 = (m0), __m1 = (m1); \
841 __asm__ ( \
842 "s r2,r2\n" \
843 " mts r10,%2\n" \
844 " m r2,%3\n" \
845 " m r2,%3\n" \
846 " m r2,%3\n" \
847 " m r2,%3\n" \
848 " m r2,%3\n" \
849 " m r2,%3\n" \
850 " m r2,%3\n" \
851 " m r2,%3\n" \
852 " m r2,%3\n" \
853 " m r2,%3\n" \
854 " m r2,%3\n" \
855 " m r2,%3\n" \
856 " m r2,%3\n" \
857 " m r2,%3\n" \
858 " m r2,%3\n" \
859 " m r2,%3\n" \
860 " cas %0,r2,r0\n" \
861 " mfs r10,%1" \
862 : "=r" ((USItype) (ph)), \
863 "=r" ((USItype) (pl)) \
864 : "%r" (__m0), \
865 "r" (__m1) \
866 : "r2"); \
867 (ph) += ((((SItype) __m0 >> 31) & __m1) \
868 + (((SItype) __m1 >> 31) & __m0)); \
869 } while (0)
870 #define UMUL_TIME 20
871 #define UDIV_TIME 200
872 #define count_leading_zeros(count, x) \
873 do { \
874 if ((x) >= 0x10000) \
875 __asm__ ("clz %0,%1" \
876 : "=r" ((USItype) (count)) \
877 : "r" ((USItype) (x) >> 16)); \
878 else \
879 { \
880 __asm__ ("clz %0,%1" \
881 : "=r" ((USItype) (count)) \
882 : "r" ((USItype) (x))); \
883 (count) += 16; \
884 } \
885 } while (0)
886 #endif
887
888 #if defined(__sh__) && !__SHMEDIA__ && W_TYPE_SIZE == 32
889 #ifndef __sh1__
890 #define umul_ppmm(w1, w0, u, v) \
891 __asm__ ( \
892 "dmulu.l %2,%3\n\tsts%M1 macl,%1\n\tsts%M0 mach,%0" \
893 : "=r<" ((USItype)(w1)), \
894 "=r<" ((USItype)(w0)) \
895 : "r" ((USItype)(u)), \
896 "r" ((USItype)(v)) \
897 : "macl", "mach")
898 #define UMUL_TIME 5
899 #endif
900
901 /* This is the same algorithm as __udiv_qrnnd_c. */
902 #define UDIV_NEEDS_NORMALIZATION 1
903
904 #define udiv_qrnnd(q, r, n1, n0, d) \
905 do { \
906 extern UWtype __udiv_qrnnd_16 (UWtype, UWtype) \
907 __attribute__ ((visibility ("hidden"))); \
908 /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ \
909 __asm__ ( \
910 "mov%M4 %4,r5\n" \
911 " swap.w %3,r4\n" \
912 " swap.w r5,r6\n" \
913 " jsr @%5\n" \
914 " shll16 r6\n" \
915 " swap.w r4,r4\n" \
916 " jsr @%5\n" \
917 " swap.w r1,%0\n" \
918 " or r1,%0" \
919 : "=r" (q), "=&z" (r) \
920 : "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16) \
921 : "r1", "r2", "r4", "r5", "r6", "pr", "t"); \
922 } while (0)
923
924 #define UDIV_TIME 80
925
926 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
927 __asm__ ("clrt;subc %5,%1; subc %4,%0" \
928 : "=r" (sh), "=r" (sl) \
929 : "0" (ah), "1" (al), "r" (bh), "r" (bl) \
930 : "t")
931
932 #endif /* __sh__ */
933
934 #if defined (__SH5__) && __SHMEDIA__ && W_TYPE_SIZE == 32
935 #define __umulsidi3(u,v) ((UDItype)(USItype)u*(USItype)v)
936 #define count_leading_zeros(count, x) \
937 do \
938 { \
939 UDItype x_ = (USItype)(x); \
940 SItype c_; \
941 \
942 __asm__ ("nsb %1, %0" : "=r" (c_) : "r" (x_)); \
943 (count) = c_ - 31; \
944 } \
945 while (0)
946 #define COUNT_LEADING_ZEROS_0 32
947 #endif
948
949 #if defined (__sparc__) && !defined (__arch64__) && !defined (__sparcv9) \
950 && W_TYPE_SIZE == 32
951 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
952 __asm__ ("addcc %r4,%5,%1\n\taddx %r2,%3,%0" \
953 : "=r" ((USItype) (sh)), \
954 "=&r" ((USItype) (sl)) \
955 : "%rJ" ((USItype) (ah)), \
956 "rI" ((USItype) (bh)), \
957 "%rJ" ((USItype) (al)), \
958 "rI" ((USItype) (bl)) \
959 __CLOBBER_CC)
960 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
961 __asm__ ("subcc %r4,%5,%1\n\tsubx %r2,%3,%0" \
962 : "=r" ((USItype) (sh)), \
963 "=&r" ((USItype) (sl)) \
964 : "rJ" ((USItype) (ah)), \
965 "rI" ((USItype) (bh)), \
966 "rJ" ((USItype) (al)), \
967 "rI" ((USItype) (bl)) \
968 __CLOBBER_CC)
969 #if defined (__sparc_v8__)
970 #define umul_ppmm(w1, w0, u, v) \
971 __asm__ ("umul %2,%3,%1;rd %%y,%0" \
972 : "=r" ((USItype) (w1)), \
973 "=r" ((USItype) (w0)) \
974 : "r" ((USItype) (u)), \
975 "r" ((USItype) (v)))
976 #define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
977 __asm__ ("mov %2,%%y;nop;nop;nop;udiv %3,%4,%0;umul %0,%4,%1;sub %3,%1,%1"\
978 : "=&r" ((USItype) (__q)), \
979 "=&r" ((USItype) (__r)) \
980 : "r" ((USItype) (__n1)), \
981 "r" ((USItype) (__n0)), \
982 "r" ((USItype) (__d)))
983 #else
984 #if defined (__sparclite__)
985 /* This has hardware multiply but not divide. It also has two additional
986 instructions scan (ffs from high bit) and divscc. */
987 #define umul_ppmm(w1, w0, u, v) \
988 __asm__ ("umul %2,%3,%1;rd %%y,%0" \
989 : "=r" ((USItype) (w1)), \
990 "=r" ((USItype) (w0)) \
991 : "r" ((USItype) (u)), \
992 "r" ((USItype) (v)))
993 #define udiv_qrnnd(q, r, n1, n0, d) \
994 __asm__ ("! Inlined udiv_qrnnd\n" \
995 " wr %%g0,%2,%%y ! Not a delayed write for sparclite\n" \
996 " tst %%g0\n" \
997 " divscc %3,%4,%%g1\n" \
998 " divscc %%g1,%4,%%g1\n" \
999 " divscc %%g1,%4,%%g1\n" \
1000 " divscc %%g1,%4,%%g1\n" \
1001 " divscc %%g1,%4,%%g1\n" \
1002 " divscc %%g1,%4,%%g1\n" \
1003 " divscc %%g1,%4,%%g1\n" \
1004 " divscc %%g1,%4,%%g1\n" \
1005 " divscc %%g1,%4,%%g1\n" \
1006 " divscc %%g1,%4,%%g1\n" \
1007 " divscc %%g1,%4,%%g1\n" \
1008 " divscc %%g1,%4,%%g1\n" \
1009 " divscc %%g1,%4,%%g1\n" \
1010 " divscc %%g1,%4,%%g1\n" \
1011 " divscc %%g1,%4,%%g1\n" \
1012 " divscc %%g1,%4,%%g1\n" \
1013 " divscc %%g1,%4,%%g1\n" \
1014 " divscc %%g1,%4,%%g1\n" \
1015 " divscc %%g1,%4,%%g1\n" \
1016 " divscc %%g1,%4,%%g1\n" \
1017 " divscc %%g1,%4,%%g1\n" \
1018 " divscc %%g1,%4,%%g1\n" \
1019 " divscc %%g1,%4,%%g1\n" \
1020 " divscc %%g1,%4,%%g1\n" \
1021 " divscc %%g1,%4,%%g1\n" \
1022 " divscc %%g1,%4,%%g1\n" \
1023 " divscc %%g1,%4,%%g1\n" \
1024 " divscc %%g1,%4,%%g1\n" \
1025 " divscc %%g1,%4,%%g1\n" \
1026 " divscc %%g1,%4,%%g1\n" \
1027 " divscc %%g1,%4,%%g1\n" \
1028 " divscc %%g1,%4,%0\n" \
1029 " rd %%y,%1\n" \
1030 " bl,a 1f\n" \
1031 " add %1,%4,%1\n" \
1032 "1: ! End of inline udiv_qrnnd" \
1033 : "=r" ((USItype) (q)), \
1034 "=r" ((USItype) (r)) \
1035 : "r" ((USItype) (n1)), \
1036 "r" ((USItype) (n0)), \
1037 "rI" ((USItype) (d)) \
1038 : "g1" __AND_CLOBBER_CC)
1039 #define UDIV_TIME 37
1040 #define count_leading_zeros(count, x) \
1041 do { \
1042 __asm__ ("scan %1,1,%0" \
1043 : "=r" ((USItype) (count)) \
1044 : "r" ((USItype) (x))); \
1045 } while (0)
1046 /* Early sparclites return 63 for an argument of 0, but they warn that future
1047 implementations might change this. Therefore, leave COUNT_LEADING_ZEROS_0
1048 undefined. */
1049 #else
1050 /* SPARC without integer multiplication and divide instructions.
1051 (i.e. at least Sun4/20,40,60,65,75,110,260,280,330,360,380,470,490) */
1052 #define umul_ppmm(w1, w0, u, v) \
1053 __asm__ ("! Inlined umul_ppmm\n" \
1054 " wr %%g0,%2,%%y ! SPARC has 0-3 delay insn after a wr\n"\
1055 " sra %3,31,%%o5 ! Don't move this insn\n" \
1056 " and %2,%%o5,%%o5 ! Don't move this insn\n" \
1057 " andcc %%g0,0,%%g1 ! Don't move this insn\n" \
1058 " mulscc %%g1,%3,%%g1\n" \
1059 " mulscc %%g1,%3,%%g1\n" \
1060 " mulscc %%g1,%3,%%g1\n" \
1061 " mulscc %%g1,%3,%%g1\n" \
1062 " mulscc %%g1,%3,%%g1\n" \
1063 " mulscc %%g1,%3,%%g1\n" \
1064 " mulscc %%g1,%3,%%g1\n" \
1065 " mulscc %%g1,%3,%%g1\n" \
1066 " mulscc %%g1,%3,%%g1\n" \
1067 " mulscc %%g1,%3,%%g1\n" \
1068 " mulscc %%g1,%3,%%g1\n" \
1069 " mulscc %%g1,%3,%%g1\n" \
1070 " mulscc %%g1,%3,%%g1\n" \
1071 " mulscc %%g1,%3,%%g1\n" \
1072 " mulscc %%g1,%3,%%g1\n" \
1073 " mulscc %%g1,%3,%%g1\n" \
1074 " mulscc %%g1,%3,%%g1\n" \
1075 " mulscc %%g1,%3,%%g1\n" \
1076 " mulscc %%g1,%3,%%g1\n" \
1077 " mulscc %%g1,%3,%%g1\n" \
1078 " mulscc %%g1,%3,%%g1\n" \
1079 " mulscc %%g1,%3,%%g1\n" \
1080 " mulscc %%g1,%3,%%g1\n" \
1081 " mulscc %%g1,%3,%%g1\n" \
1082 " mulscc %%g1,%3,%%g1\n" \
1083 " mulscc %%g1,%3,%%g1\n" \
1084 " mulscc %%g1,%3,%%g1\n" \
1085 " mulscc %%g1,%3,%%g1\n" \
1086 " mulscc %%g1,%3,%%g1\n" \
1087 " mulscc %%g1,%3,%%g1\n" \
1088 " mulscc %%g1,%3,%%g1\n" \
1089 " mulscc %%g1,%3,%%g1\n" \
1090 " mulscc %%g1,0,%%g1\n" \
1091 " add %%g1,%%o5,%0\n" \
1092 " rd %%y,%1" \
1093 : "=r" ((USItype) (w1)), \
1094 "=r" ((USItype) (w0)) \
1095 : "%rI" ((USItype) (u)), \
1096 "r" ((USItype) (v)) \
1097 : "g1", "o5" __AND_CLOBBER_CC)
1098 #define UMUL_TIME 39 /* 39 instructions */
1099 /* It's quite necessary to add this much assembler for the sparc.
1100 The default udiv_qrnnd (in C) is more than 10 times slower! */
1101 #define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
1102 __asm__ ("! Inlined udiv_qrnnd\n" \
1103 " mov 32,%%g1\n" \
1104 " subcc %1,%2,%%g0\n" \
1105 "1: bcs 5f\n" \
1106 " addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n" \
1107 " sub %1,%2,%1 ! this kills msb of n\n" \
1108 " addx %1,%1,%1 ! so this can't give carry\n" \
1109 " subcc %%g1,1,%%g1\n" \
1110 "2: bne 1b\n" \
1111 " subcc %1,%2,%%g0\n" \
1112 " bcs 3f\n" \
1113 " addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n" \
1114 " b 3f\n" \
1115 " sub %1,%2,%1 ! this kills msb of n\n" \
1116 "4: sub %1,%2,%1\n" \
1117 "5: addxcc %1,%1,%1\n" \
1118 " bcc 2b\n" \
1119 " subcc %%g1,1,%%g1\n" \
1120 "! Got carry from n. Subtract next step to cancel this carry.\n" \
1121 " bne 4b\n" \
1122 " addcc %0,%0,%0 ! shift n1n0 and a 0-bit in lsb\n" \
1123 " sub %1,%2,%1\n" \
1124 "3: xnor %0,0,%0\n" \
1125 " ! End of inline udiv_qrnnd" \
1126 : "=&r" ((USItype) (__q)), \
1127 "=&r" ((USItype) (__r)) \
1128 : "r" ((USItype) (__d)), \
1129 "1" ((USItype) (__n1)), \
1130 "0" ((USItype) (__n0)) : "g1" __AND_CLOBBER_CC)
1131 #define UDIV_TIME (3+7*32) /* 7 instructions/iteration. 32 iterations. */
1132 #endif /* __sparclite__ */
1133 #endif /* __sparc_v8__ */
1134 #endif /* sparc32 */
1135
1136 #if ((defined (__sparc__) && defined (__arch64__)) || defined (__sparcv9)) \
1137 && W_TYPE_SIZE == 64
1138 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1139 __asm__ ("addcc %r4,%5,%1\n\t" \
1140 "add %r2,%3,%0\n\t" \
1141 "bcs,a,pn %%xcc, 1f\n\t" \
1142 "add %0, 1, %0\n" \
1143 "1:" \
1144 : "=r" ((UDItype)(sh)), \
1145 "=&r" ((UDItype)(sl)) \
1146 : "%rJ" ((UDItype)(ah)), \
1147 "rI" ((UDItype)(bh)), \
1148 "%rJ" ((UDItype)(al)), \
1149 "rI" ((UDItype)(bl)) \
1150 __CLOBBER_CC)
1151
1152 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1153 __asm__ ("subcc %r4,%5,%1\n\t" \
1154 "sub %r2,%3,%0\n\t" \
1155 "bcs,a,pn %%xcc, 1f\n\t" \
1156 "sub %0, 1, %0\n\t" \
1157 "1:" \
1158 : "=r" ((UDItype)(sh)), \
1159 "=&r" ((UDItype)(sl)) \
1160 : "rJ" ((UDItype)(ah)), \
1161 "rI" ((UDItype)(bh)), \
1162 "rJ" ((UDItype)(al)), \
1163 "rI" ((UDItype)(bl)) \
1164 __CLOBBER_CC)
1165
1166 #define umul_ppmm(wh, wl, u, v) \
1167 do { \
1168 UDItype tmp1, tmp2, tmp3, tmp4; \
1169 __asm__ __volatile__ ( \
1170 "srl %7,0,%3\n\t" \
1171 "mulx %3,%6,%1\n\t" \
1172 "srlx %6,32,%2\n\t" \
1173 "mulx %2,%3,%4\n\t" \
1174 "sllx %4,32,%5\n\t" \
1175 "srl %6,0,%3\n\t" \
1176 "sub %1,%5,%5\n\t" \
1177 "srlx %5,32,%5\n\t" \
1178 "addcc %4,%5,%4\n\t" \
1179 "srlx %7,32,%5\n\t" \
1180 "mulx %3,%5,%3\n\t" \
1181 "mulx %2,%5,%5\n\t" \
1182 "sethi %%hi(0x80000000),%2\n\t" \
1183 "addcc %4,%3,%4\n\t" \
1184 "srlx %4,32,%4\n\t" \
1185 "add %2,%2,%2\n\t" \
1186 "movcc %%xcc,%%g0,%2\n\t" \
1187 "addcc %5,%4,%5\n\t" \
1188 "sllx %3,32,%3\n\t" \
1189 "add %1,%3,%1\n\t" \
1190 "add %5,%2,%0" \
1191 : "=r" ((UDItype)(wh)), \
1192 "=&r" ((UDItype)(wl)), \
1193 "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \
1194 : "r" ((UDItype)(u)), \
1195 "r" ((UDItype)(v)) \
1196 __CLOBBER_CC); \
1197 } while (0)
1198 #define UMUL_TIME 96
1199 #define UDIV_TIME 230
1200 #endif /* sparc64 */
1201
1202 #if defined (__vax__) && W_TYPE_SIZE == 32
1203 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1204 __asm__ ("addl2 %5,%1\n\tadwc %3,%0" \
1205 : "=g" ((USItype) (sh)), \
1206 "=&g" ((USItype) (sl)) \
1207 : "%0" ((USItype) (ah)), \
1208 "g" ((USItype) (bh)), \
1209 "%1" ((USItype) (al)), \
1210 "g" ((USItype) (bl)))
1211 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1212 __asm__ ("subl2 %5,%1\n\tsbwc %3,%0" \
1213 : "=g" ((USItype) (sh)), \
1214 "=&g" ((USItype) (sl)) \
1215 : "0" ((USItype) (ah)), \
1216 "g" ((USItype) (bh)), \
1217 "1" ((USItype) (al)), \
1218 "g" ((USItype) (bl)))
1219 #define umul_ppmm(xh, xl, m0, m1) \
1220 do { \
1221 union { \
1222 UDItype __ll; \
1223 struct {USItype __l, __h;} __i; \
1224 } __xx; \
1225 USItype __m0 = (m0), __m1 = (m1); \
1226 __asm__ ("emul %1,%2,$0,%0" \
1227 : "=r" (__xx.__ll) \
1228 : "g" (__m0), \
1229 "g" (__m1)); \
1230 (xh) = __xx.__i.__h; \
1231 (xl) = __xx.__i.__l; \
1232 (xh) += ((((SItype) __m0 >> 31) & __m1) \
1233 + (((SItype) __m1 >> 31) & __m0)); \
1234 } while (0)
1235 #define sdiv_qrnnd(q, r, n1, n0, d) \
1236 do { \
1237 union {DItype __ll; \
1238 struct {SItype __l, __h;} __i; \
1239 } __xx; \
1240 __xx.__i.__h = n1; __xx.__i.__l = n0; \
1241 __asm__ ("ediv %3,%2,%0,%1" \
1242 : "=g" (q), "=g" (r) \
1243 : "g" (__xx.__ll), "g" (d)); \
1244 } while (0)
1245 #endif /* __vax__ */
1246
1247 #if defined (__xtensa__) && W_TYPE_SIZE == 32
1248 /* This code is not Xtensa-configuration-specific, so rely on the compiler
1249 to expand builtin functions depending on what configuration features
1250 are available. This avoids library calls when the operation can be
1251 performed in-line. */
1252 #define umul_ppmm(w1, w0, u, v) \
1253 do { \
1254 DWunion __w; \
1255 __w.ll = __builtin_umulsidi3 (u, v); \
1256 w1 = __w.s.high; \
1257 w0 = __w.s.low; \
1258 } while (0)
1259 #define __umulsidi3(u, v) __builtin_umulsidi3 (u, v)
1260 #define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
1261 #define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
1262 #endif /* __xtensa__ */
1263
1264 #if defined (__z8000__) && W_TYPE_SIZE == 16
1265 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1266 __asm__ ("add %H1,%H5\n\tadc %H0,%H3" \
1267 : "=r" ((unsigned int)(sh)), \
1268 "=&r" ((unsigned int)(sl)) \
1269 : "%0" ((unsigned int)(ah)), \
1270 "r" ((unsigned int)(bh)), \
1271 "%1" ((unsigned int)(al)), \
1272 "rQR" ((unsigned int)(bl)))
1273 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1274 __asm__ ("sub %H1,%H5\n\tsbc %H0,%H3" \
1275 : "=r" ((unsigned int)(sh)), \
1276 "=&r" ((unsigned int)(sl)) \
1277 : "0" ((unsigned int)(ah)), \
1278 "r" ((unsigned int)(bh)), \
1279 "1" ((unsigned int)(al)), \
1280 "rQR" ((unsigned int)(bl)))
1281 #define umul_ppmm(xh, xl, m0, m1) \
1282 do { \
1283 union {long int __ll; \
1284 struct {unsigned int __h, __l;} __i; \
1285 } __xx; \
1286 unsigned int __m0 = (m0), __m1 = (m1); \
1287 __asm__ ("mult %S0,%H3" \
1288 : "=r" (__xx.__i.__h), \
1289 "=r" (__xx.__i.__l) \
1290 : "%1" (__m0), \
1291 "rQR" (__m1)); \
1292 (xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
1293 (xh) += ((((signed int) __m0 >> 15) & __m1) \
1294 + (((signed int) __m1 >> 15) & __m0)); \
1295 } while (0)
1296 #endif /* __z8000__ */
1297
1298 #endif /* __GNUC__ */
1299
1300 /* If this machine has no inline assembler, use C macros. */
1301
1302 #if !defined (add_ssaaaa)
1303 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1304 do { \
1305 UWtype __x; \
1306 __x = (al) + (bl); \
1307 (sh) = (ah) + (bh) + (__x < (al)); \
1308 (sl) = __x; \
1309 } while (0)
1310 #endif
1311
1312 #if !defined (sub_ddmmss)
1313 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1314 do { \
1315 UWtype __x; \
1316 __x = (al) - (bl); \
1317 (sh) = (ah) - (bh) - (__x > (al)); \
1318 (sl) = __x; \
1319 } while (0)
1320 #endif
1321
1322 /* If we lack umul_ppmm but have smul_ppmm, define umul_ppmm in terms of
1323 smul_ppmm. */
1324 #if !defined (umul_ppmm) && defined (smul_ppmm)
1325 #define umul_ppmm(w1, w0, u, v) \
1326 do { \
1327 UWtype __w1; \
1328 UWtype __xm0 = (u), __xm1 = (v); \
1329 smul_ppmm (__w1, w0, __xm0, __xm1); \
1330 (w1) = __w1 + (-(__xm0 >> (W_TYPE_SIZE - 1)) & __xm1) \
1331 + (-(__xm1 >> (W_TYPE_SIZE - 1)) & __xm0); \
1332 } while (0)
1333 #endif
1334
1335 /* If we still don't have umul_ppmm, define it using plain C. */
1336 #if !defined (umul_ppmm)
1337 #define umul_ppmm(w1, w0, u, v) \
1338 do { \
1339 UWtype __x0, __x1, __x2, __x3; \
1340 UHWtype __ul, __vl, __uh, __vh; \
1341 \
1342 __ul = __ll_lowpart (u); \
1343 __uh = __ll_highpart (u); \
1344 __vl = __ll_lowpart (v); \
1345 __vh = __ll_highpart (v); \
1346 \
1347 __x0 = (UWtype) __ul * __vl; \
1348 __x1 = (UWtype) __ul * __vh; \
1349 __x2 = (UWtype) __uh * __vl; \
1350 __x3 = (UWtype) __uh * __vh; \
1351 \
1352 __x1 += __ll_highpart (__x0);/* this can't give carry */ \
1353 __x1 += __x2; /* but this indeed can */ \
1354 if (__x1 < __x2) /* did we get it? */ \
1355 __x3 += __ll_B; /* yes, add it in the proper pos. */ \
1356 \
1357 (w1) = __x3 + __ll_highpart (__x1); \
1358 (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \
1359 } while (0)
1360 #endif
1361
1362 #if !defined (__umulsidi3)
1363 #define __umulsidi3(u, v) \
1364 ({DWunion __w; \
1365 umul_ppmm (__w.s.high, __w.s.low, u, v); \
1366 __w.ll; })
1367 #endif
1368
1369 /* Define this unconditionally, so it can be used for debugging. */
1370 #define __udiv_qrnnd_c(q, r, n1, n0, d) \
1371 do { \
1372 UWtype __d1, __d0, __q1, __q0; \
1373 UWtype __r1, __r0, __m; \
1374 __d1 = __ll_highpart (d); \
1375 __d0 = __ll_lowpart (d); \
1376 \
1377 __r1 = (n1) % __d1; \
1378 __q1 = (n1) / __d1; \
1379 __m = (UWtype) __q1 * __d0; \
1380 __r1 = __r1 * __ll_B | __ll_highpart (n0); \
1381 if (__r1 < __m) \
1382 { \
1383 __q1--, __r1 += (d); \
1384 if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
1385 if (__r1 < __m) \
1386 __q1--, __r1 += (d); \
1387 } \
1388 __r1 -= __m; \
1389 \
1390 __r0 = __r1 % __d1; \
1391 __q0 = __r1 / __d1; \
1392 __m = (UWtype) __q0 * __d0; \
1393 __r0 = __r0 * __ll_B | __ll_lowpart (n0); \
1394 if (__r0 < __m) \
1395 { \
1396 __q0--, __r0 += (d); \
1397 if (__r0 >= (d)) \
1398 if (__r0 < __m) \
1399 __q0--, __r0 += (d); \
1400 } \
1401 __r0 -= __m; \
1402 \
1403 (q) = (UWtype) __q1 * __ll_B | __q0; \
1404 (r) = __r0; \
1405 } while (0)
1406
1407 /* If the processor has no udiv_qrnnd but sdiv_qrnnd, go through
1408 __udiv_w_sdiv (defined in libgcc or elsewhere). */
1409 #if !defined (udiv_qrnnd) && defined (sdiv_qrnnd)
1410 #define udiv_qrnnd(q, r, nh, nl, d) \
1411 do { \
1412 USItype __r; \
1413 (q) = __udiv_w_sdiv (&__r, nh, nl, d); \
1414 (r) = __r; \
1415 } while (0)
1416 #endif
1417
1418 /* If udiv_qrnnd was not defined for this processor, use __udiv_qrnnd_c. */
1419 #if !defined (udiv_qrnnd)
1420 #define UDIV_NEEDS_NORMALIZATION 1
1421 #define udiv_qrnnd __udiv_qrnnd_c
1422 #endif
1423
1424 #if !defined (count_leading_zeros)
1425 #define count_leading_zeros(count, x) \
1426 do { \
1427 UWtype __xr = (x); \
1428 UWtype __a; \
1429 \
1430 if (W_TYPE_SIZE <= 32) \
1431 { \
1432 __a = __xr < ((UWtype)1<<2*__BITS4) \
1433 ? (__xr < ((UWtype)1<<__BITS4) ? 0 : __BITS4) \
1434 : (__xr < ((UWtype)1<<3*__BITS4) ? 2*__BITS4 : 3*__BITS4); \
1435 } \
1436 else \
1437 { \
1438 for (__a = W_TYPE_SIZE - 8; __a > 0; __a -= 8) \
1439 if (((__xr >> __a) & 0xff) != 0) \
1440 break; \
1441 } \
1442 \
1443 (count) = W_TYPE_SIZE - (__clz_tab[__xr >> __a] + __a); \
1444 } while (0)
1445 #define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
1446 #endif
1447
1448 #if !defined (count_trailing_zeros)
1449 /* Define count_trailing_zeros using count_leading_zeros. The latter might be
1450 defined in asm, but if it is not, the C version above is good enough. */
1451 #define count_trailing_zeros(count, x) \
1452 do { \
1453 UWtype __ctz_x = (x); \
1454 UWtype __ctz_c; \
1455 count_leading_zeros (__ctz_c, __ctz_x & -__ctz_x); \
1456 (count) = W_TYPE_SIZE - 1 - __ctz_c; \
1457 } while (0)
1458 #endif
1459
1460 #ifndef UDIV_NEEDS_NORMALIZATION
1461 #define UDIV_NEEDS_NORMALIZATION 0
1462 #endif
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