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28f540f4 | 1 | /* Internal function for converting integers to ASCII. |
04277e02 | 2 | Copyright (C) 1994-2019 Free Software Foundation, Inc. |
6d52618b UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Torbjorn Granlund <tege@matematik.su.se> | |
d112ae30 | 5 | and Ulrich Drepper <drepper@gnu.org>. |
28f540f4 | 6 | |
6d52618b | 7 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 11 | |
6d52618b UD |
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 | |
41bdb6e2 | 15 | Lesser General Public License for more details. |
28f540f4 | 16 | |
41bdb6e2 | 17 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 18 | License along with the GNU C Library; if not, see |
5a82c748 | 19 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 20 | |
8f5ca04b | 21 | #include <gmp-mparam.h> |
48896b9d | 22 | #include <gmp.h> |
c1f0486a | 23 | #include <limits.h> |
ca34d7a7 UD |
24 | #include <stdlib/gmp-impl.h> |
25 | #include <stdlib/longlong.h> | |
8f5ca04b | 26 | |
eb96ffb0 | 27 | #include <_itoa.h> |
8f5ca04b RM |
28 | |
29 | ||
30 | /* Canonize environment. For some architectures not all values might | |
31 | be defined in the GMP header files. */ | |
32 | #ifndef UMUL_TIME | |
33 | # define UMUL_TIME 1 | |
34 | #endif | |
35 | #ifndef UDIV_TIME | |
5ae3e846 | 36 | # define UDIV_TIME 3 |
8f5ca04b RM |
37 | #endif |
38 | ||
39 | /* Control memory layout. */ | |
40 | #ifdef PACK | |
41 | # undef PACK | |
42 | # define PACK __attribute__ ((packed)) | |
43 | #else | |
44 | # define PACK | |
45 | #endif | |
46 | ||
47 | ||
48 | /* Declare local types. */ | |
49 | struct base_table_t | |
50 | { | |
51 | #if (UDIV_TIME > 2 * UMUL_TIME) | |
0e3426bb | 52 | mp_limb_t base_multiplier; |
8f5ca04b RM |
53 | #endif |
54 | char flag; | |
55 | char post_shift; | |
56 | #if BITS_PER_MP_LIMB == 32 | |
57 | struct | |
58 | { | |
59 | char normalization_steps; | |
60 | char ndigits; | |
0e3426bb | 61 | mp_limb_t base PACK; |
8f5ca04b | 62 | #if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 63 | mp_limb_t base_ninv PACK; |
8f5ca04b RM |
64 | #endif |
65 | } big; | |
66 | #endif | |
67 | }; | |
68 | ||
69 | /* To reduce the memory needed we include some fields of the tables | |
6d52618b | 70 | only conditionally. */ |
5ae3e846 UD |
71 | #if UDIV_TIME > 2 * UMUL_TIME |
72 | # define SEL1(X) X, | |
73 | # define SEL2(X) ,X | |
74 | #else | |
75 | # define SEL1(X) | |
76 | # define SEL2(X) | |
8f5ca04b RM |
77 | #endif |
78 | ||
79 | ||
765bbb24 | 80 | /* We do not compile _itoa if we always can use _itoa_word. */ |
94b07d20 | 81 | #if _ITOA_NEEDED |
8f5ca04b | 82 | /* Local variables. */ |
aa32f798 | 83 | const struct base_table_t _itoa_base_table[] attribute_hidden = |
8f5ca04b | 84 | { |
765bbb24 | 85 | # if BITS_PER_MP_LIMB == 64 |
d8a5edc2 RM |
86 | /* 2 */ {SEL1(0ull) 1, 1}, |
87 | /* 3 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 1}, | |
88 | /* 4 */ {SEL1(0ull) 1, 2}, | |
89 | /* 5 */ {SEL1(0xcccccccccccccccdull) 0, 2}, | |
90 | /* 6 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 2}, | |
91 | /* 7 */ {SEL1(0x2492492492492493ull) 1, 3}, | |
92 | /* 8 */ {SEL1(0ull) 1, 3}, | |
93 | /* 9 */ {SEL1(0xe38e38e38e38e38full) 0, 3}, | |
94 | /* 10 */ {SEL1(0xcccccccccccccccdull) 0, 3}, | |
95 | /* 11 */ {SEL1(0x2e8ba2e8ba2e8ba3ull) 0, 1}, | |
96 | /* 12 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 3}, | |
97 | /* 13 */ {SEL1(0x4ec4ec4ec4ec4ec5ull) 0, 2}, | |
98 | /* 14 */ {SEL1(0x2492492492492493ull) 1, 4}, | |
99 | /* 15 */ {SEL1(0x8888888888888889ull) 0, 3}, | |
100 | /* 16 */ {SEL1(0ull) 1, 4}, | |
101 | /* 17 */ {SEL1(0xf0f0f0f0f0f0f0f1ull) 0, 4}, | |
102 | /* 18 */ {SEL1(0xe38e38e38e38e38full) 0, 4}, | |
103 | /* 19 */ {SEL1(0xd79435e50d79435full) 0, 4}, | |
104 | /* 20 */ {SEL1(0xcccccccccccccccdull) 0, 4}, | |
105 | /* 21 */ {SEL1(0x8618618618618619ull) 1, 5}, | |
106 | /* 22 */ {SEL1(0x2e8ba2e8ba2e8ba3ull) 0, 2}, | |
107 | /* 23 */ {SEL1(0x642c8590b21642c9ull) 1, 5}, | |
108 | /* 24 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 4}, | |
109 | /* 25 */ {SEL1(0x47ae147ae147ae15ull) 1, 5}, | |
110 | /* 26 */ {SEL1(0x4ec4ec4ec4ec4ec5ull) 0, 3}, | |
111 | /* 27 */ {SEL1(0x97b425ed097b425full) 0, 4}, | |
112 | /* 28 */ {SEL1(0x2492492492492493ull) 1, 5}, | |
113 | /* 29 */ {SEL1(0x1a7b9611a7b9611bull) 1, 5}, | |
114 | /* 30 */ {SEL1(0x8888888888888889ull) 0, 4}, | |
115 | /* 31 */ {SEL1(0x0842108421084211ull) 1, 5}, | |
116 | /* 32 */ {SEL1(0ull) 1, 5}, | |
117 | /* 33 */ {SEL1(0x0f83e0f83e0f83e1ull) 0, 1}, | |
118 | /* 34 */ {SEL1(0xf0f0f0f0f0f0f0f1ull) 0, 5}, | |
119 | /* 35 */ {SEL1(0xea0ea0ea0ea0ea0full) 0, 5}, | |
120 | /* 36 */ {SEL1(0xe38e38e38e38e38full) 0, 5} | |
765bbb24 UD |
121 | # endif |
122 | # if BITS_PER_MP_LIMB == 32 | |
8f5ca04b RM |
123 | /* 2 */ {SEL1(0ul) 1, 1, {0, 31, 0x80000000ul SEL2(0xfffffffful)}}, |
124 | /* 3 */ {SEL1(0xaaaaaaabul) 0, 1, {0, 20, 0xcfd41b91ul SEL2(0x3b563c24ul)}}, | |
125 | /* 4 */ {SEL1(0ul) 1, 2, {1, 15, 0x40000000ul SEL2(0xfffffffful)}}, | |
126 | /* 5 */ {SEL1(0xcccccccdul) 0, 2, {1, 13, 0x48c27395ul SEL2(0xc25c2684ul)}}, | |
127 | /* 6 */ {SEL1(0xaaaaaaabul) 0, 2, {0, 12, 0x81bf1000ul SEL2(0xf91bd1b6ul)}}, | |
128 | /* 7 */ {SEL1(0x24924925ul) 1, 3, {1, 11, 0x75db9c97ul SEL2(0x1607a2cbul)}}, | |
129 | /* 8 */ {SEL1(0ul) 1, 3, {1, 10, 0x40000000ul SEL2(0xfffffffful)}}, | |
130 | /* 9 */ {SEL1(0x38e38e39ul) 0, 1, {0, 10, 0xcfd41b91ul SEL2(0x3b563c24ul)}}, | |
131 | /* 10 */ {SEL1(0xcccccccdul) 0, 3, {2, 9, 0x3b9aca00ul SEL2(0x12e0be82ul)}}, | |
132 | /* 11 */ {SEL1(0xba2e8ba3ul) 0, 3, {0, 9, 0x8c8b6d2bul SEL2(0xd24cde04ul)}}, | |
133 | /* 12 */ {SEL1(0xaaaaaaabul) 0, 3, {3, 8, 0x19a10000ul SEL2(0x3fa39ab5ul)}}, | |
134 | /* 13 */ {SEL1(0x4ec4ec4ful) 0, 2, {2, 8, 0x309f1021ul SEL2(0x50f8ac5ful)}}, | |
135 | /* 14 */ {SEL1(0x24924925ul) 1, 4, {1, 8, 0x57f6c100ul SEL2(0x74843b1eul)}}, | |
136 | /* 15 */ {SEL1(0x88888889ul) 0, 3, {0, 8, 0x98c29b81ul SEL2(0xad0326c2ul)}}, | |
137 | /* 16 */ {SEL1(0ul) 1, 4, {3, 7, 0x10000000ul SEL2(0xfffffffful)}}, | |
138 | /* 17 */ {SEL1(0xf0f0f0f1ul) 0, 4, {3, 7, 0x18754571ul SEL2(0x4ef0b6bdul)}}, | |
139 | /* 18 */ {SEL1(0x38e38e39ul) 0, 2, {2, 7, 0x247dbc80ul SEL2(0xc0fc48a1ul)}}, | |
140 | /* 19 */ {SEL1(0xaf286bcbul) 1, 5, {2, 7, 0x3547667bul SEL2(0x33838942ul)}}, | |
141 | /* 20 */ {SEL1(0xcccccccdul) 0, 4, {1, 7, 0x4c4b4000ul SEL2(0xad7f29abul)}}, | |
142 | /* 21 */ {SEL1(0x86186187ul) 1, 5, {1, 7, 0x6b5a6e1dul SEL2(0x313c3d15ul)}}, | |
143 | /* 22 */ {SEL1(0xba2e8ba3ul) 0, 4, {0, 7, 0x94ace180ul SEL2(0xb8cca9e0ul)}}, | |
144 | /* 23 */ {SEL1(0xb21642c9ul) 0, 4, {0, 7, 0xcaf18367ul SEL2(0x42ed6de9ul)}}, | |
145 | /* 24 */ {SEL1(0xaaaaaaabul) 0, 4, {4, 6, 0x0b640000ul SEL2(0x67980e0bul)}}, | |
146 | /* 25 */ {SEL1(0x51eb851ful) 0, 3, {4, 6, 0x0e8d4a51ul SEL2(0x19799812ul)}}, | |
147 | /* 26 */ {SEL1(0x4ec4ec4ful) 0, 3, {3, 6, 0x1269ae40ul SEL2(0xbce85396ul)}}, | |
148 | /* 27 */ {SEL1(0x2f684bdbul) 1, 5, {3, 6, 0x17179149ul SEL2(0x62c103a9ul)}}, | |
149 | /* 28 */ {SEL1(0x24924925ul) 1, 5, {3, 6, 0x1cb91000ul SEL2(0x1d353d43ul)}}, | |
150 | /* 29 */ {SEL1(0x8d3dcb09ul) 0, 4, {2, 6, 0x23744899ul SEL2(0xce1deceaul)}}, | |
151 | /* 30 */ {SEL1(0x88888889ul) 0, 4, {2, 6, 0x2b73a840ul SEL2(0x790fc511ul)}}, | |
152 | /* 31 */ {SEL1(0x08421085ul) 1, 5, {2, 6, 0x34e63b41ul SEL2(0x35b865a0ul)}}, | |
153 | /* 32 */ {SEL1(0ul) 1, 5, {1, 6, 0x40000000ul SEL2(0xfffffffful)}}, | |
154 | /* 33 */ {SEL1(0x3e0f83e1ul) 0, 3, {1, 6, 0x4cfa3cc1ul SEL2(0xa9aed1b3ul)}}, | |
155 | /* 34 */ {SEL1(0xf0f0f0f1ul) 0, 5, {1, 6, 0x5c13d840ul SEL2(0x63dfc229ul)}}, | |
156 | /* 35 */ {SEL1(0xd41d41d5ul) 1, 6, {1, 6, 0x6d91b519ul SEL2(0x2b0fee30ul)}}, | |
157 | /* 36 */ {SEL1(0x38e38e39ul) 0, 3, {0, 6, 0x81bf1000ul SEL2(0xf91bd1b6ul)}} | |
765bbb24 | 158 | # endif |
8f5ca04b | 159 | }; |
765bbb24 | 160 | #endif |
8f5ca04b | 161 | |
40c38b6c | 162 | char * |
94b07d20 | 163 | _itoa_word (_ITOA_WORD_TYPE value, char *buflim, |
40c38b6c UD |
164 | unsigned int base, int upper_case) |
165 | { | |
166 | const char *digits = (upper_case | |
40c38b6c | 167 | ? _itoa_upper_digits |
5be8418c | 168 | : _itoa_lower_digits); |
40c38b6c UD |
169 | |
170 | switch (base) | |
171 | { | |
172 | #define SPECIAL(Base) \ | |
173 | case Base: \ | |
174 | do \ | |
175 | *--buflim = digits[value % Base]; \ | |
176 | while ((value /= Base) != 0); \ | |
177 | break | |
178 | ||
179 | SPECIAL (10); | |
180 | SPECIAL (16); | |
181 | SPECIAL (8); | |
182 | default: | |
183 | do | |
184 | *--buflim = digits[value % base]; | |
185 | while ((value /= base) != 0); | |
186 | } | |
187 | return buflim; | |
188 | } | |
189 | #undef SPECIAL | |
190 | ||
191 | ||
94b07d20 | 192 | #if _ITOA_NEEDED |
8f5ca04b | 193 | char * |
f63f2bfd JM |
194 | _itoa (unsigned long long int value, char *buflim, unsigned int base, |
195 | int upper_case) | |
8f5ca04b | 196 | { |
aa32f798 | 197 | const char *digits = (upper_case |
5be8418c AS |
198 | ? _itoa_upper_digits |
199 | : _itoa_lower_digits); | |
d64b6ad0 | 200 | const struct base_table_t *brec = &_itoa_base_table[base - 2]; |
8f5ca04b RM |
201 | |
202 | switch (base) | |
203 | { | |
765bbb24 | 204 | # define RUN_2N(BITS) \ |
4f8dbcb1 | 205 | do \ |
db1ee0a8 | 206 | { \ |
4f8dbcb1 UD |
207 | /* `unsigned long long int' always has 64 bits. */ \ |
208 | mp_limb_t work_hi = value >> (64 - BITS_PER_MP_LIMB); \ | |
209 | \ | |
210 | if (BITS_PER_MP_LIMB == 32) \ | |
211 | { \ | |
212 | if (work_hi != 0) \ | |
213 | { \ | |
214 | mp_limb_t work_lo; \ | |
215 | int cnt; \ | |
216 | \ | |
217 | work_lo = value & 0xfffffffful; \ | |
218 | for (cnt = BITS_PER_MP_LIMB / BITS; cnt > 0; --cnt) \ | |
219 | { \ | |
9710f75d | 220 | *--buflim = digits[work_lo & ((1ul << BITS) - 1)]; \ |
4f8dbcb1 UD |
221 | work_lo >>= BITS; \ |
222 | } \ | |
223 | if (BITS_PER_MP_LIMB % BITS != 0) \ | |
224 | { \ | |
225 | work_lo \ | |
226 | |= ((work_hi \ | |
227 | & ((1 << (BITS - BITS_PER_MP_LIMB%BITS)) \ | |
228 | - 1)) \ | |
229 | << BITS_PER_MP_LIMB % BITS); \ | |
230 | work_hi >>= BITS - BITS_PER_MP_LIMB % BITS; \ | |
231 | if (work_hi == 0) \ | |
232 | work_hi = work_lo; \ | |
233 | else \ | |
9710f75d | 234 | *--buflim = digits[work_lo]; \ |
4f8dbcb1 UD |
235 | } \ |
236 | } \ | |
237 | else \ | |
238 | work_hi = value & 0xfffffffful; \ | |
239 | } \ | |
240 | do \ | |
241 | { \ | |
9710f75d | 242 | *--buflim = digits[work_hi & ((1 << BITS) - 1)]; \ |
4f8dbcb1 UD |
243 | work_hi >>= BITS; \ |
244 | } \ | |
245 | while (work_hi != 0); \ | |
246 | } \ | |
8f5ca04b RM |
247 | while (0) |
248 | case 8: | |
249 | RUN_2N (3); | |
250 | break; | |
251 | ||
252 | case 16: | |
253 | RUN_2N (4); | |
254 | break; | |
255 | ||
256 | default: | |
257 | { | |
6cae3957 | 258 | char *bufend = buflim; |
765bbb24 | 259 | # if BITS_PER_MP_LIMB == 64 |
0e3426bb | 260 | mp_limb_t base_multiplier = brec->base_multiplier; |
8f5ca04b RM |
261 | if (brec->flag) |
262 | while (value != 0) | |
263 | { | |
db1ee0a8 | 264 | mp_limb_t quo, rem, x; |
88d506de | 265 | mp_limb_t dummy __attribute__ ((unused)); |
8f5ca04b RM |
266 | |
267 | umul_ppmm (x, dummy, value, base_multiplier); | |
268 | quo = (x + ((value - x) >> 1)) >> (brec->post_shift - 1); | |
269 | rem = value - quo * base; | |
9710f75d | 270 | *--buflim = digits[rem]; |
8f5ca04b RM |
271 | value = quo; |
272 | } | |
273 | else | |
274 | while (value != 0) | |
275 | { | |
db1ee0a8 | 276 | mp_limb_t quo, rem, x; |
88d506de | 277 | mp_limb_t dummy __attribute__ ((unused)); |
8f5ca04b RM |
278 | |
279 | umul_ppmm (x, dummy, value, base_multiplier); | |
280 | quo = x >> brec->post_shift; | |
281 | rem = value - quo * base; | |
9710f75d | 282 | *--buflim = digits[rem]; |
8f5ca04b RM |
283 | value = quo; |
284 | } | |
765bbb24 UD |
285 | # endif |
286 | # if BITS_PER_MP_LIMB == 32 | |
0e3426bb | 287 | mp_limb_t t[3]; |
8f5ca04b RM |
288 | int n; |
289 | ||
290 | /* First convert x0 to 1-3 words in base s->big.base. | |
291 | Optimize for frequent cases of 32 bit numbers. */ | |
0e3426bb | 292 | if ((mp_limb_t) (value >> 32) >= 1) |
8f5ca04b | 293 | { |
765bbb24 | 294 | # if UDIV_TIME > 2 * UMUL_TIME || UDIV_NEEDS_NORMALIZATION |
8f5ca04b | 295 | int big_normalization_steps = brec->big.normalization_steps; |
7c713e28 RM |
296 | mp_limb_t big_base_norm |
297 | = brec->big.base << big_normalization_steps; | |
765bbb24 | 298 | # endif |
0e3426bb | 299 | if ((mp_limb_t) (value >> 32) >= brec->big.base) |
8f5ca04b | 300 | { |
0e3426bb | 301 | mp_limb_t x1hi, x1lo, r; |
8f5ca04b RM |
302 | /* If you want to optimize this, take advantage of |
303 | that the quotient in the first udiv_qrnnd will | |
304 | always be very small. It might be faster just to | |
305 | subtract in a tight loop. */ | |
306 | ||
765bbb24 | 307 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 308 | mp_limb_t x, xh, xl; |
8f5ca04b RM |
309 | |
310 | if (big_normalization_steps == 0) | |
311 | xh = 0; | |
312 | else | |
cae88996 UD |
313 | xh = (mp_limb_t) (value >> (64 - big_normalization_steps)); |
314 | xl = (mp_limb_t) (value >> (32 - big_normalization_steps)); | |
8f5ca04b RM |
315 | udiv_qrnnd_preinv (x1hi, r, xh, xl, big_base_norm, |
316 | brec->big.base_ninv); | |
317 | ||
0e3426bb | 318 | xl = ((mp_limb_t) value) << big_normalization_steps; |
8f5ca04b | 319 | udiv_qrnnd_preinv (x1lo, x, r, xl, big_base_norm, |
d112ae30 | 320 | brec->big.base_ninv); |
8f5ca04b RM |
321 | t[2] = x >> big_normalization_steps; |
322 | ||
323 | if (big_normalization_steps == 0) | |
324 | xh = x1hi; | |
325 | else | |
326 | xh = ((x1hi << big_normalization_steps) | |
cae88996 | 327 | | (x1lo >> (32 - big_normalization_steps))); |
8f5ca04b RM |
328 | xl = x1lo << big_normalization_steps; |
329 | udiv_qrnnd_preinv (t[0], x, xh, xl, big_base_norm, | |
d112ae30 | 330 | brec->big.base_ninv); |
8f5ca04b | 331 | t[1] = x >> big_normalization_steps; |
765bbb24 | 332 | # elif UDIV_NEEDS_NORMALIZATION |
0e3426bb | 333 | mp_limb_t x, xh, xl; |
8f5ca04b RM |
334 | |
335 | if (big_normalization_steps == 0) | |
336 | xh = 0; | |
337 | else | |
0e3426bb RM |
338 | xh = (mp_limb_t) (value >> 64 - big_normalization_steps); |
339 | xl = (mp_limb_t) (value >> 32 - big_normalization_steps); | |
8f5ca04b RM |
340 | udiv_qrnnd (x1hi, r, xh, xl, big_base_norm); |
341 | ||
0e3426bb | 342 | xl = ((mp_limb_t) value) << big_normalization_steps; |
8f5ca04b RM |
343 | udiv_qrnnd (x1lo, x, r, xl, big_base_norm); |
344 | t[2] = x >> big_normalization_steps; | |
345 | ||
346 | if (big_normalization_steps == 0) | |
347 | xh = x1hi; | |
348 | else | |
349 | xh = ((x1hi << big_normalization_steps) | |
350 | | (x1lo >> 32 - big_normalization_steps)); | |
351 | xl = x1lo << big_normalization_steps; | |
352 | udiv_qrnnd (t[0], x, xh, xl, big_base_norm); | |
353 | t[1] = x >> big_normalization_steps; | |
765bbb24 | 354 | # else |
0e3426bb | 355 | udiv_qrnnd (x1hi, r, 0, (mp_limb_t) (value >> 32), |
8f5ca04b | 356 | brec->big.base); |
0e3426bb | 357 | udiv_qrnnd (x1lo, t[2], r, (mp_limb_t) value, brec->big.base); |
8f5ca04b | 358 | udiv_qrnnd (t[0], t[1], x1hi, x1lo, brec->big.base); |
765bbb24 | 359 | # endif |
8f5ca04b RM |
360 | n = 3; |
361 | } | |
362 | else | |
363 | { | |
765bbb24 | 364 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 365 | mp_limb_t x; |
8f5ca04b RM |
366 | |
367 | value <<= brec->big.normalization_steps; | |
0e3426bb RM |
368 | udiv_qrnnd_preinv (t[0], x, (mp_limb_t) (value >> 32), |
369 | (mp_limb_t) value, big_base_norm, | |
8f5ca04b RM |
370 | brec->big.base_ninv); |
371 | t[1] = x >> brec->big.normalization_steps; | |
765bbb24 | 372 | # elif UDIV_NEEDS_NORMALIZATION |
0e3426bb | 373 | mp_limb_t x; |
8f5ca04b RM |
374 | |
375 | value <<= big_normalization_steps; | |
0e3426bb RM |
376 | udiv_qrnnd (t[0], x, (mp_limb_t) (value >> 32), |
377 | (mp_limb_t) value, big_base_norm); | |
8f5ca04b | 378 | t[1] = x >> big_normalization_steps; |
765bbb24 | 379 | # else |
0e3426bb RM |
380 | udiv_qrnnd (t[0], t[1], (mp_limb_t) (value >> 32), |
381 | (mp_limb_t) value, brec->big.base); | |
765bbb24 | 382 | # endif |
8f5ca04b RM |
383 | n = 2; |
384 | } | |
385 | } | |
386 | else | |
387 | { | |
388 | t[0] = value; | |
389 | n = 1; | |
390 | } | |
391 | ||
392 | /* Convert the 1-3 words in t[], word by word, to ASCII. */ | |
393 | do | |
394 | { | |
0e3426bb | 395 | mp_limb_t ti = t[--n]; |
8f5ca04b RM |
396 | int ndig_for_this_limb = 0; |
397 | ||
765bbb24 | 398 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 399 | mp_limb_t base_multiplier = brec->base_multiplier; |
8f5ca04b RM |
400 | if (brec->flag) |
401 | while (ti != 0) | |
402 | { | |
db1ee0a8 RM |
403 | mp_limb_t quo, rem, x; |
404 | mp_limb_t dummy __attribute__ ((unused)); | |
8f5ca04b RM |
405 | |
406 | umul_ppmm (x, dummy, ti, base_multiplier); | |
407 | quo = (x + ((ti - x) >> 1)) >> (brec->post_shift - 1); | |
408 | rem = ti - quo * base; | |
9710f75d | 409 | *--buflim = digits[rem]; |
8f5ca04b RM |
410 | ti = quo; |
411 | ++ndig_for_this_limb; | |
412 | } | |
413 | else | |
414 | while (ti != 0) | |
415 | { | |
db1ee0a8 RM |
416 | mp_limb_t quo, rem, x; |
417 | mp_limb_t dummy __attribute__ ((unused)); | |
8f5ca04b RM |
418 | |
419 | umul_ppmm (x, dummy, ti, base_multiplier); | |
420 | quo = x >> brec->post_shift; | |
421 | rem = ti - quo * base; | |
9710f75d | 422 | *--buflim = digits[rem]; |
8f5ca04b RM |
423 | ti = quo; |
424 | ++ndig_for_this_limb; | |
425 | } | |
765bbb24 | 426 | # else |
8f5ca04b RM |
427 | while (ti != 0) |
428 | { | |
0e3426bb | 429 | mp_limb_t quo, rem; |
8f5ca04b RM |
430 | |
431 | quo = ti / base; | |
432 | rem = ti % base; | |
9710f75d | 433 | *--buflim = digits[rem]; |
8f5ca04b RM |
434 | ti = quo; |
435 | ++ndig_for_this_limb; | |
436 | } | |
765bbb24 | 437 | # endif |
8f5ca04b RM |
438 | /* If this wasn't the most significant word, pad with zeros. */ |
439 | if (n != 0) | |
440 | while (ndig_for_this_limb < brec->big.ndigits) | |
441 | { | |
9710f75d | 442 | *--buflim = '0'; |
8f5ca04b RM |
443 | ++ndig_for_this_limb; |
444 | } | |
445 | } | |
446 | while (n != 0); | |
765bbb24 | 447 | # endif |
6cae3957 UD |
448 | if (buflim == bufend) |
449 | *--buflim = '0'; | |
8f5ca04b RM |
450 | } |
451 | break; | |
452 | } | |
453 | ||
9710f75d | 454 | return buflim; |
8f5ca04b | 455 | } |
765bbb24 | 456 | #endif |
9c7ff11a UD |
457 | |
458 | char * | |
94b07d20 L |
459 | _fitoa_word (_ITOA_WORD_TYPE value, char *buf, unsigned int base, |
460 | int upper_case) | |
9c7ff11a UD |
461 | { |
462 | char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */ | |
463 | char *cp = _itoa_word (value, tmpbuf + sizeof (value) * 4, base, upper_case); | |
464 | while (cp < tmpbuf + sizeof (value) * 4) | |
465 | *buf++ = *cp++; | |
466 | return buf; | |
467 | } | |
468 | ||
94b07d20 | 469 | #if _ITOA_NEEDED |
9c7ff11a UD |
470 | char * |
471 | _fitoa (unsigned long long value, char *buf, unsigned int base, int upper_case) | |
472 | { | |
473 | char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */ | |
474 | char *cp = _itoa (value, tmpbuf + sizeof (value) * 4, base, upper_case); | |
475 | while (cp < tmpbuf + sizeof (value) * 4) | |
476 | *buf++ = *cp++; | |
477 | return buf; | |
478 | } | |
765bbb24 | 479 | #endif |