]>
Commit | Line | Data |
---|---|---|
28f540f4 | 1 | /* Internal function for converting integers to ASCII. |
6cae3957 | 2 | Copyright (C) 1994, 1995, 1996, 1999, 2000, 2002, 2003, 2004, 2007 |
d8a5edc2 | 3 | Free Software Foundation, Inc. |
6d52618b UD |
4 | This file is part of the GNU C Library. |
5 | Contributed by Torbjorn Granlund <tege@matematik.su.se> | |
d112ae30 | 6 | and Ulrich Drepper <drepper@gnu.org>. |
28f540f4 | 7 | |
6d52618b | 8 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
9 | modify it under the terms of the GNU Lesser General Public |
10 | License as published by the Free Software Foundation; either | |
11 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 12 | |
6d52618b UD |
13 | The GNU C Library is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 16 | Lesser General Public License for more details. |
28f540f4 | 17 | |
41bdb6e2 AJ |
18 | You should have received a copy of the GNU Lesser General Public |
19 | License along with the GNU C Library; if not, write to the Free | |
20 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
21 | 02111-1307 USA. */ | |
28f540f4 | 22 | |
8f5ca04b | 23 | #include <gmp-mparam.h> |
48896b9d | 24 | #include <gmp.h> |
c1f0486a | 25 | #include <limits.h> |
ca34d7a7 UD |
26 | #include <stdlib/gmp-impl.h> |
27 | #include <stdlib/longlong.h> | |
8f5ca04b RM |
28 | |
29 | #include "_itoa.h" | |
30 | ||
31 | ||
32 | /* Canonize environment. For some architectures not all values might | |
33 | be defined in the GMP header files. */ | |
34 | #ifndef UMUL_TIME | |
35 | # define UMUL_TIME 1 | |
36 | #endif | |
37 | #ifndef UDIV_TIME | |
5ae3e846 | 38 | # define UDIV_TIME 3 |
8f5ca04b RM |
39 | #endif |
40 | ||
41 | /* Control memory layout. */ | |
42 | #ifdef PACK | |
43 | # undef PACK | |
44 | # define PACK __attribute__ ((packed)) | |
45 | #else | |
46 | # define PACK | |
47 | #endif | |
48 | ||
49 | ||
50 | /* Declare local types. */ | |
51 | struct base_table_t | |
52 | { | |
53 | #if (UDIV_TIME > 2 * UMUL_TIME) | |
0e3426bb | 54 | mp_limb_t base_multiplier; |
8f5ca04b RM |
55 | #endif |
56 | char flag; | |
57 | char post_shift; | |
58 | #if BITS_PER_MP_LIMB == 32 | |
59 | struct | |
60 | { | |
61 | char normalization_steps; | |
62 | char ndigits; | |
0e3426bb | 63 | mp_limb_t base PACK; |
8f5ca04b | 64 | #if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 65 | mp_limb_t base_ninv PACK; |
8f5ca04b RM |
66 | #endif |
67 | } big; | |
68 | #endif | |
69 | }; | |
70 | ||
71 | /* To reduce the memory needed we include some fields of the tables | |
6d52618b | 72 | only conditionally. */ |
5ae3e846 UD |
73 | #if UDIV_TIME > 2 * UMUL_TIME |
74 | # define SEL1(X) X, | |
75 | # define SEL2(X) ,X | |
76 | #else | |
77 | # define SEL1(X) | |
78 | # define SEL2(X) | |
8f5ca04b RM |
79 | #endif |
80 | ||
81 | ||
765bbb24 UD |
82 | /* We do not compile _itoa if we always can use _itoa_word. */ |
83 | #if LLONG_MAX != LONG_MAX | |
8f5ca04b | 84 | /* Local variables. */ |
aa32f798 | 85 | const struct base_table_t _itoa_base_table[] attribute_hidden = |
8f5ca04b | 86 | { |
765bbb24 | 87 | # if BITS_PER_MP_LIMB == 64 |
d8a5edc2 RM |
88 | /* 2 */ {SEL1(0ull) 1, 1}, |
89 | /* 3 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 1}, | |
90 | /* 4 */ {SEL1(0ull) 1, 2}, | |
91 | /* 5 */ {SEL1(0xcccccccccccccccdull) 0, 2}, | |
92 | /* 6 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 2}, | |
93 | /* 7 */ {SEL1(0x2492492492492493ull) 1, 3}, | |
94 | /* 8 */ {SEL1(0ull) 1, 3}, | |
95 | /* 9 */ {SEL1(0xe38e38e38e38e38full) 0, 3}, | |
96 | /* 10 */ {SEL1(0xcccccccccccccccdull) 0, 3}, | |
97 | /* 11 */ {SEL1(0x2e8ba2e8ba2e8ba3ull) 0, 1}, | |
98 | /* 12 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 3}, | |
99 | /* 13 */ {SEL1(0x4ec4ec4ec4ec4ec5ull) 0, 2}, | |
100 | /* 14 */ {SEL1(0x2492492492492493ull) 1, 4}, | |
101 | /* 15 */ {SEL1(0x8888888888888889ull) 0, 3}, | |
102 | /* 16 */ {SEL1(0ull) 1, 4}, | |
103 | /* 17 */ {SEL1(0xf0f0f0f0f0f0f0f1ull) 0, 4}, | |
104 | /* 18 */ {SEL1(0xe38e38e38e38e38full) 0, 4}, | |
105 | /* 19 */ {SEL1(0xd79435e50d79435full) 0, 4}, | |
106 | /* 20 */ {SEL1(0xcccccccccccccccdull) 0, 4}, | |
107 | /* 21 */ {SEL1(0x8618618618618619ull) 1, 5}, | |
108 | /* 22 */ {SEL1(0x2e8ba2e8ba2e8ba3ull) 0, 2}, | |
109 | /* 23 */ {SEL1(0x642c8590b21642c9ull) 1, 5}, | |
110 | /* 24 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 4}, | |
111 | /* 25 */ {SEL1(0x47ae147ae147ae15ull) 1, 5}, | |
112 | /* 26 */ {SEL1(0x4ec4ec4ec4ec4ec5ull) 0, 3}, | |
113 | /* 27 */ {SEL1(0x97b425ed097b425full) 0, 4}, | |
114 | /* 28 */ {SEL1(0x2492492492492493ull) 1, 5}, | |
115 | /* 29 */ {SEL1(0x1a7b9611a7b9611bull) 1, 5}, | |
116 | /* 30 */ {SEL1(0x8888888888888889ull) 0, 4}, | |
117 | /* 31 */ {SEL1(0x0842108421084211ull) 1, 5}, | |
118 | /* 32 */ {SEL1(0ull) 1, 5}, | |
119 | /* 33 */ {SEL1(0x0f83e0f83e0f83e1ull) 0, 1}, | |
120 | /* 34 */ {SEL1(0xf0f0f0f0f0f0f0f1ull) 0, 5}, | |
121 | /* 35 */ {SEL1(0xea0ea0ea0ea0ea0full) 0, 5}, | |
122 | /* 36 */ {SEL1(0xe38e38e38e38e38full) 0, 5} | |
765bbb24 UD |
123 | # endif |
124 | # if BITS_PER_MP_LIMB == 32 | |
8f5ca04b RM |
125 | /* 2 */ {SEL1(0ul) 1, 1, {0, 31, 0x80000000ul SEL2(0xfffffffful)}}, |
126 | /* 3 */ {SEL1(0xaaaaaaabul) 0, 1, {0, 20, 0xcfd41b91ul SEL2(0x3b563c24ul)}}, | |
127 | /* 4 */ {SEL1(0ul) 1, 2, {1, 15, 0x40000000ul SEL2(0xfffffffful)}}, | |
128 | /* 5 */ {SEL1(0xcccccccdul) 0, 2, {1, 13, 0x48c27395ul SEL2(0xc25c2684ul)}}, | |
129 | /* 6 */ {SEL1(0xaaaaaaabul) 0, 2, {0, 12, 0x81bf1000ul SEL2(0xf91bd1b6ul)}}, | |
130 | /* 7 */ {SEL1(0x24924925ul) 1, 3, {1, 11, 0x75db9c97ul SEL2(0x1607a2cbul)}}, | |
131 | /* 8 */ {SEL1(0ul) 1, 3, {1, 10, 0x40000000ul SEL2(0xfffffffful)}}, | |
132 | /* 9 */ {SEL1(0x38e38e39ul) 0, 1, {0, 10, 0xcfd41b91ul SEL2(0x3b563c24ul)}}, | |
133 | /* 10 */ {SEL1(0xcccccccdul) 0, 3, {2, 9, 0x3b9aca00ul SEL2(0x12e0be82ul)}}, | |
134 | /* 11 */ {SEL1(0xba2e8ba3ul) 0, 3, {0, 9, 0x8c8b6d2bul SEL2(0xd24cde04ul)}}, | |
135 | /* 12 */ {SEL1(0xaaaaaaabul) 0, 3, {3, 8, 0x19a10000ul SEL2(0x3fa39ab5ul)}}, | |
136 | /* 13 */ {SEL1(0x4ec4ec4ful) 0, 2, {2, 8, 0x309f1021ul SEL2(0x50f8ac5ful)}}, | |
137 | /* 14 */ {SEL1(0x24924925ul) 1, 4, {1, 8, 0x57f6c100ul SEL2(0x74843b1eul)}}, | |
138 | /* 15 */ {SEL1(0x88888889ul) 0, 3, {0, 8, 0x98c29b81ul SEL2(0xad0326c2ul)}}, | |
139 | /* 16 */ {SEL1(0ul) 1, 4, {3, 7, 0x10000000ul SEL2(0xfffffffful)}}, | |
140 | /* 17 */ {SEL1(0xf0f0f0f1ul) 0, 4, {3, 7, 0x18754571ul SEL2(0x4ef0b6bdul)}}, | |
141 | /* 18 */ {SEL1(0x38e38e39ul) 0, 2, {2, 7, 0x247dbc80ul SEL2(0xc0fc48a1ul)}}, | |
142 | /* 19 */ {SEL1(0xaf286bcbul) 1, 5, {2, 7, 0x3547667bul SEL2(0x33838942ul)}}, | |
143 | /* 20 */ {SEL1(0xcccccccdul) 0, 4, {1, 7, 0x4c4b4000ul SEL2(0xad7f29abul)}}, | |
144 | /* 21 */ {SEL1(0x86186187ul) 1, 5, {1, 7, 0x6b5a6e1dul SEL2(0x313c3d15ul)}}, | |
145 | /* 22 */ {SEL1(0xba2e8ba3ul) 0, 4, {0, 7, 0x94ace180ul SEL2(0xb8cca9e0ul)}}, | |
146 | /* 23 */ {SEL1(0xb21642c9ul) 0, 4, {0, 7, 0xcaf18367ul SEL2(0x42ed6de9ul)}}, | |
147 | /* 24 */ {SEL1(0xaaaaaaabul) 0, 4, {4, 6, 0x0b640000ul SEL2(0x67980e0bul)}}, | |
148 | /* 25 */ {SEL1(0x51eb851ful) 0, 3, {4, 6, 0x0e8d4a51ul SEL2(0x19799812ul)}}, | |
149 | /* 26 */ {SEL1(0x4ec4ec4ful) 0, 3, {3, 6, 0x1269ae40ul SEL2(0xbce85396ul)}}, | |
150 | /* 27 */ {SEL1(0x2f684bdbul) 1, 5, {3, 6, 0x17179149ul SEL2(0x62c103a9ul)}}, | |
151 | /* 28 */ {SEL1(0x24924925ul) 1, 5, {3, 6, 0x1cb91000ul SEL2(0x1d353d43ul)}}, | |
152 | /* 29 */ {SEL1(0x8d3dcb09ul) 0, 4, {2, 6, 0x23744899ul SEL2(0xce1deceaul)}}, | |
153 | /* 30 */ {SEL1(0x88888889ul) 0, 4, {2, 6, 0x2b73a840ul SEL2(0x790fc511ul)}}, | |
154 | /* 31 */ {SEL1(0x08421085ul) 1, 5, {2, 6, 0x34e63b41ul SEL2(0x35b865a0ul)}}, | |
155 | /* 32 */ {SEL1(0ul) 1, 5, {1, 6, 0x40000000ul SEL2(0xfffffffful)}}, | |
156 | /* 33 */ {SEL1(0x3e0f83e1ul) 0, 3, {1, 6, 0x4cfa3cc1ul SEL2(0xa9aed1b3ul)}}, | |
157 | /* 34 */ {SEL1(0xf0f0f0f1ul) 0, 5, {1, 6, 0x5c13d840ul SEL2(0x63dfc229ul)}}, | |
158 | /* 35 */ {SEL1(0xd41d41d5ul) 1, 6, {1, 6, 0x6d91b519ul SEL2(0x2b0fee30ul)}}, | |
159 | /* 36 */ {SEL1(0x38e38e39ul) 0, 3, {0, 6, 0x81bf1000ul SEL2(0xf91bd1b6ul)}} | |
765bbb24 | 160 | # endif |
8f5ca04b | 161 | }; |
765bbb24 | 162 | #endif |
8f5ca04b | 163 | |
28f540f4 | 164 | /* Lower-case digits. */ |
af6f3906 | 165 | extern const char _itoa_lower_digits[]; |
aa32f798 | 166 | extern const char _itoa_lower_digits_internal[] attribute_hidden; |
28f540f4 | 167 | /* Upper-case digits. */ |
af6f3906 | 168 | extern const char _itoa_upper_digits[]; |
aa32f798 | 169 | extern const char _itoa_upper_digits_internal[] attribute_hidden; |
28f540f4 | 170 | |
28f540f4 | 171 | |
40c38b6c UD |
172 | char * |
173 | _itoa_word (unsigned long value, char *buflim, | |
174 | unsigned int base, int upper_case) | |
175 | { | |
176 | const char *digits = (upper_case | |
177 | #if !defined NOT_IN_libc || defined IS_IN_rtld | |
178 | ? INTUSE(_itoa_upper_digits) | |
179 | : INTUSE(_itoa_lower_digits) | |
180 | #else | |
181 | ? _itoa_upper_digits | |
182 | : _itoa_lower_digits | |
183 | #endif | |
184 | ); | |
185 | ||
186 | switch (base) | |
187 | { | |
188 | #define SPECIAL(Base) \ | |
189 | case Base: \ | |
190 | do \ | |
191 | *--buflim = digits[value % Base]; \ | |
192 | while ((value /= Base) != 0); \ | |
193 | break | |
194 | ||
195 | SPECIAL (10); | |
196 | SPECIAL (16); | |
197 | SPECIAL (8); | |
198 | default: | |
199 | do | |
200 | *--buflim = digits[value % base]; | |
201 | while ((value /= base) != 0); | |
202 | } | |
203 | return buflim; | |
204 | } | |
205 | #undef SPECIAL | |
206 | ||
207 | ||
765bbb24 | 208 | #if LLONG_MAX != LONG_MAX |
8f5ca04b RM |
209 | char * |
210 | _itoa (value, buflim, base, upper_case) | |
211 | unsigned long long int value; | |
212 | char *buflim; | |
213 | unsigned int base; | |
214 | int upper_case; | |
215 | { | |
aa32f798 UD |
216 | const char *digits = (upper_case |
217 | ? INTUSE(_itoa_upper_digits) | |
218 | : INTUSE(_itoa_lower_digits)); | |
d64b6ad0 | 219 | const struct base_table_t *brec = &_itoa_base_table[base - 2]; |
8f5ca04b RM |
220 | |
221 | switch (base) | |
222 | { | |
765bbb24 | 223 | # define RUN_2N(BITS) \ |
4f8dbcb1 UD |
224 | do \ |
225 | { \ | |
226 | /* `unsigned long long int' always has 64 bits. */ \ | |
227 | mp_limb_t work_hi = value >> (64 - BITS_PER_MP_LIMB); \ | |
228 | \ | |
229 | if (BITS_PER_MP_LIMB == 32) \ | |
230 | { \ | |
231 | if (work_hi != 0) \ | |
232 | { \ | |
233 | mp_limb_t work_lo; \ | |
234 | int cnt; \ | |
235 | \ | |
236 | work_lo = value & 0xfffffffful; \ | |
237 | for (cnt = BITS_PER_MP_LIMB / BITS; cnt > 0; --cnt) \ | |
238 | { \ | |
9710f75d | 239 | *--buflim = digits[work_lo & ((1ul << BITS) - 1)]; \ |
4f8dbcb1 UD |
240 | work_lo >>= BITS; \ |
241 | } \ | |
242 | if (BITS_PER_MP_LIMB % BITS != 0) \ | |
243 | { \ | |
244 | work_lo \ | |
245 | |= ((work_hi \ | |
246 | & ((1 << (BITS - BITS_PER_MP_LIMB%BITS)) \ | |
247 | - 1)) \ | |
248 | << BITS_PER_MP_LIMB % BITS); \ | |
249 | work_hi >>= BITS - BITS_PER_MP_LIMB % BITS; \ | |
250 | if (work_hi == 0) \ | |
251 | work_hi = work_lo; \ | |
252 | else \ | |
9710f75d | 253 | *--buflim = digits[work_lo]; \ |
4f8dbcb1 UD |
254 | } \ |
255 | } \ | |
256 | else \ | |
257 | work_hi = value & 0xfffffffful; \ | |
258 | } \ | |
259 | do \ | |
260 | { \ | |
9710f75d | 261 | *--buflim = digits[work_hi & ((1 << BITS) - 1)]; \ |
4f8dbcb1 UD |
262 | work_hi >>= BITS; \ |
263 | } \ | |
264 | while (work_hi != 0); \ | |
265 | } \ | |
8f5ca04b RM |
266 | while (0) |
267 | case 8: | |
268 | RUN_2N (3); | |
269 | break; | |
270 | ||
271 | case 16: | |
272 | RUN_2N (4); | |
273 | break; | |
274 | ||
275 | default: | |
276 | { | |
6cae3957 | 277 | char *bufend = buflim; |
765bbb24 | 278 | # if BITS_PER_MP_LIMB == 64 |
0e3426bb | 279 | mp_limb_t base_multiplier = brec->base_multiplier; |
8f5ca04b RM |
280 | if (brec->flag) |
281 | while (value != 0) | |
282 | { | |
0e3426bb | 283 | mp_limb_t quo, rem, x, dummy; |
8f5ca04b RM |
284 | |
285 | umul_ppmm (x, dummy, value, base_multiplier); | |
286 | quo = (x + ((value - x) >> 1)) >> (brec->post_shift - 1); | |
287 | rem = value - quo * base; | |
9710f75d | 288 | *--buflim = digits[rem]; |
8f5ca04b RM |
289 | value = quo; |
290 | } | |
291 | else | |
292 | while (value != 0) | |
293 | { | |
0e3426bb | 294 | mp_limb_t quo, rem, x, dummy; |
8f5ca04b RM |
295 | |
296 | umul_ppmm (x, dummy, value, base_multiplier); | |
297 | quo = x >> brec->post_shift; | |
298 | rem = value - quo * base; | |
9710f75d | 299 | *--buflim = digits[rem]; |
8f5ca04b RM |
300 | value = quo; |
301 | } | |
765bbb24 UD |
302 | # endif |
303 | # if BITS_PER_MP_LIMB == 32 | |
0e3426bb | 304 | mp_limb_t t[3]; |
8f5ca04b RM |
305 | int n; |
306 | ||
307 | /* First convert x0 to 1-3 words in base s->big.base. | |
308 | Optimize for frequent cases of 32 bit numbers. */ | |
0e3426bb | 309 | if ((mp_limb_t) (value >> 32) >= 1) |
8f5ca04b | 310 | { |
765bbb24 | 311 | # if UDIV_TIME > 2 * UMUL_TIME || UDIV_NEEDS_NORMALIZATION |
8f5ca04b | 312 | int big_normalization_steps = brec->big.normalization_steps; |
7c713e28 RM |
313 | mp_limb_t big_base_norm |
314 | = brec->big.base << big_normalization_steps; | |
765bbb24 | 315 | # endif |
0e3426bb | 316 | if ((mp_limb_t) (value >> 32) >= brec->big.base) |
8f5ca04b | 317 | { |
0e3426bb | 318 | mp_limb_t x1hi, x1lo, r; |
8f5ca04b RM |
319 | /* If you want to optimize this, take advantage of |
320 | that the quotient in the first udiv_qrnnd will | |
321 | always be very small. It might be faster just to | |
322 | subtract in a tight loop. */ | |
323 | ||
765bbb24 | 324 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 325 | mp_limb_t x, xh, xl; |
8f5ca04b RM |
326 | |
327 | if (big_normalization_steps == 0) | |
328 | xh = 0; | |
329 | else | |
cae88996 UD |
330 | xh = (mp_limb_t) (value >> (64 - big_normalization_steps)); |
331 | xl = (mp_limb_t) (value >> (32 - big_normalization_steps)); | |
8f5ca04b RM |
332 | udiv_qrnnd_preinv (x1hi, r, xh, xl, big_base_norm, |
333 | brec->big.base_ninv); | |
334 | ||
0e3426bb | 335 | xl = ((mp_limb_t) value) << big_normalization_steps; |
8f5ca04b | 336 | udiv_qrnnd_preinv (x1lo, x, r, xl, big_base_norm, |
d112ae30 | 337 | brec->big.base_ninv); |
8f5ca04b RM |
338 | t[2] = x >> big_normalization_steps; |
339 | ||
340 | if (big_normalization_steps == 0) | |
341 | xh = x1hi; | |
342 | else | |
343 | xh = ((x1hi << big_normalization_steps) | |
cae88996 | 344 | | (x1lo >> (32 - big_normalization_steps))); |
8f5ca04b RM |
345 | xl = x1lo << big_normalization_steps; |
346 | udiv_qrnnd_preinv (t[0], x, xh, xl, big_base_norm, | |
d112ae30 | 347 | brec->big.base_ninv); |
8f5ca04b | 348 | t[1] = x >> big_normalization_steps; |
765bbb24 | 349 | # elif UDIV_NEEDS_NORMALIZATION |
0e3426bb | 350 | mp_limb_t x, xh, xl; |
8f5ca04b RM |
351 | |
352 | if (big_normalization_steps == 0) | |
353 | xh = 0; | |
354 | else | |
0e3426bb RM |
355 | xh = (mp_limb_t) (value >> 64 - big_normalization_steps); |
356 | xl = (mp_limb_t) (value >> 32 - big_normalization_steps); | |
8f5ca04b RM |
357 | udiv_qrnnd (x1hi, r, xh, xl, big_base_norm); |
358 | ||
0e3426bb | 359 | xl = ((mp_limb_t) value) << big_normalization_steps; |
8f5ca04b RM |
360 | udiv_qrnnd (x1lo, x, r, xl, big_base_norm); |
361 | t[2] = x >> big_normalization_steps; | |
362 | ||
363 | if (big_normalization_steps == 0) | |
364 | xh = x1hi; | |
365 | else | |
366 | xh = ((x1hi << big_normalization_steps) | |
367 | | (x1lo >> 32 - big_normalization_steps)); | |
368 | xl = x1lo << big_normalization_steps; | |
369 | udiv_qrnnd (t[0], x, xh, xl, big_base_norm); | |
370 | t[1] = x >> big_normalization_steps; | |
765bbb24 | 371 | # else |
0e3426bb | 372 | udiv_qrnnd (x1hi, r, 0, (mp_limb_t) (value >> 32), |
8f5ca04b | 373 | brec->big.base); |
0e3426bb | 374 | udiv_qrnnd (x1lo, t[2], r, (mp_limb_t) value, brec->big.base); |
8f5ca04b | 375 | udiv_qrnnd (t[0], t[1], x1hi, x1lo, brec->big.base); |
765bbb24 | 376 | # endif |
8f5ca04b RM |
377 | n = 3; |
378 | } | |
379 | else | |
380 | { | |
765bbb24 | 381 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 382 | mp_limb_t x; |
8f5ca04b RM |
383 | |
384 | value <<= brec->big.normalization_steps; | |
0e3426bb RM |
385 | udiv_qrnnd_preinv (t[0], x, (mp_limb_t) (value >> 32), |
386 | (mp_limb_t) value, big_base_norm, | |
8f5ca04b RM |
387 | brec->big.base_ninv); |
388 | t[1] = x >> brec->big.normalization_steps; | |
765bbb24 | 389 | # elif UDIV_NEEDS_NORMALIZATION |
0e3426bb | 390 | mp_limb_t x; |
8f5ca04b RM |
391 | |
392 | value <<= big_normalization_steps; | |
0e3426bb RM |
393 | udiv_qrnnd (t[0], x, (mp_limb_t) (value >> 32), |
394 | (mp_limb_t) value, big_base_norm); | |
8f5ca04b | 395 | t[1] = x >> big_normalization_steps; |
765bbb24 | 396 | # else |
0e3426bb RM |
397 | udiv_qrnnd (t[0], t[1], (mp_limb_t) (value >> 32), |
398 | (mp_limb_t) value, brec->big.base); | |
765bbb24 | 399 | # endif |
8f5ca04b RM |
400 | n = 2; |
401 | } | |
402 | } | |
403 | else | |
404 | { | |
405 | t[0] = value; | |
406 | n = 1; | |
407 | } | |
408 | ||
409 | /* Convert the 1-3 words in t[], word by word, to ASCII. */ | |
410 | do | |
411 | { | |
0e3426bb | 412 | mp_limb_t ti = t[--n]; |
8f5ca04b RM |
413 | int ndig_for_this_limb = 0; |
414 | ||
765bbb24 | 415 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 416 | mp_limb_t base_multiplier = brec->base_multiplier; |
8f5ca04b RM |
417 | if (brec->flag) |
418 | while (ti != 0) | |
419 | { | |
0e3426bb | 420 | mp_limb_t quo, rem, x, dummy; |
8f5ca04b RM |
421 | |
422 | umul_ppmm (x, dummy, ti, base_multiplier); | |
423 | quo = (x + ((ti - x) >> 1)) >> (brec->post_shift - 1); | |
424 | rem = ti - quo * base; | |
9710f75d | 425 | *--buflim = digits[rem]; |
8f5ca04b RM |
426 | ti = quo; |
427 | ++ndig_for_this_limb; | |
428 | } | |
429 | else | |
430 | while (ti != 0) | |
431 | { | |
0e3426bb | 432 | mp_limb_t quo, rem, x, dummy; |
8f5ca04b RM |
433 | |
434 | umul_ppmm (x, dummy, ti, base_multiplier); | |
435 | quo = x >> brec->post_shift; | |
436 | rem = ti - quo * base; | |
9710f75d | 437 | *--buflim = digits[rem]; |
8f5ca04b RM |
438 | ti = quo; |
439 | ++ndig_for_this_limb; | |
440 | } | |
765bbb24 | 441 | # else |
8f5ca04b RM |
442 | while (ti != 0) |
443 | { | |
0e3426bb | 444 | mp_limb_t quo, rem; |
8f5ca04b RM |
445 | |
446 | quo = ti / base; | |
447 | rem = ti % base; | |
9710f75d | 448 | *--buflim = digits[rem]; |
8f5ca04b RM |
449 | ti = quo; |
450 | ++ndig_for_this_limb; | |
451 | } | |
765bbb24 | 452 | # endif |
8f5ca04b RM |
453 | /* If this wasn't the most significant word, pad with zeros. */ |
454 | if (n != 0) | |
455 | while (ndig_for_this_limb < brec->big.ndigits) | |
456 | { | |
9710f75d | 457 | *--buflim = '0'; |
8f5ca04b RM |
458 | ++ndig_for_this_limb; |
459 | } | |
460 | } | |
461 | while (n != 0); | |
765bbb24 | 462 | # endif |
6cae3957 UD |
463 | if (buflim == bufend) |
464 | *--buflim = '0'; | |
8f5ca04b RM |
465 | } |
466 | break; | |
467 | } | |
468 | ||
9710f75d | 469 | return buflim; |
8f5ca04b | 470 | } |
765bbb24 | 471 | #endif |
9c7ff11a UD |
472 | |
473 | char * | |
474 | _fitoa_word (unsigned long value, char *buf, unsigned int base, int upper_case) | |
475 | { | |
476 | char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */ | |
477 | char *cp = _itoa_word (value, tmpbuf + sizeof (value) * 4, base, upper_case); | |
478 | while (cp < tmpbuf + sizeof (value) * 4) | |
479 | *buf++ = *cp++; | |
480 | return buf; | |
481 | } | |
482 | ||
765bbb24 | 483 | #if LLONG_MAX != LONG_MAX |
9c7ff11a UD |
484 | char * |
485 | _fitoa (unsigned long long value, char *buf, unsigned int base, int upper_case) | |
486 | { | |
487 | char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */ | |
488 | char *cp = _itoa (value, tmpbuf + sizeof (value) * 4, base, upper_case); | |
489 | while (cp < tmpbuf + sizeof (value) * 4) | |
490 | *buf++ = *cp++; | |
491 | return buf; | |
492 | } | |
765bbb24 | 493 | #endif |