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28f540f4 | 1 | /* Internal function for converting integers to ASCII. |
dff8da6b | 2 | Copyright (C) 1994-2024 Free Software Foundation, Inc. |
6d52618b | 3 | This file is part of the GNU C Library. |
28f540f4 | 4 | |
6d52618b | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 9 | |
6d52618b UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
28f540f4 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 18 | |
434eca87 AZ |
19 | /* Mark symbols hidden in static PIE for early self relocation to work. |
20 | Note: string.h may have ifuncs which cannot be hidden on i686. */ | |
21 | #if BUILD_PIE_DEFAULT | |
22 | # pragma GCC visibility push(hidden) | |
23 | #endif | |
8f5ca04b | 24 | #include <gmp-mparam.h> |
48896b9d | 25 | #include <gmp.h> |
c1f0486a | 26 | #include <limits.h> |
ca34d7a7 UD |
27 | #include <stdlib/gmp-impl.h> |
28 | #include <stdlib/longlong.h> | |
8f5ca04b | 29 | |
eb96ffb0 | 30 | #include <_itoa.h> |
8f5ca04b RM |
31 | |
32 | ||
33 | /* Canonize environment. For some architectures not all values might | |
34 | be defined in the GMP header files. */ | |
35 | #ifndef UMUL_TIME | |
36 | # define UMUL_TIME 1 | |
37 | #endif | |
38 | #ifndef UDIV_TIME | |
5ae3e846 | 39 | # define UDIV_TIME 3 |
8f5ca04b RM |
40 | #endif |
41 | ||
42 | /* Control memory layout. */ | |
43 | #ifdef PACK | |
44 | # undef PACK | |
45 | # define PACK __attribute__ ((packed)) | |
46 | #else | |
47 | # define PACK | |
48 | #endif | |
49 | ||
50 | ||
51 | /* Declare local types. */ | |
52 | struct base_table_t | |
53 | { | |
54 | #if (UDIV_TIME > 2 * UMUL_TIME) | |
0e3426bb | 55 | mp_limb_t base_multiplier; |
8f5ca04b RM |
56 | #endif |
57 | char flag; | |
58 | char post_shift; | |
59 | #if BITS_PER_MP_LIMB == 32 | |
60 | struct | |
61 | { | |
62 | char normalization_steps; | |
63 | char ndigits; | |
0e3426bb | 64 | mp_limb_t base PACK; |
8f5ca04b | 65 | #if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 66 | mp_limb_t base_ninv PACK; |
8f5ca04b RM |
67 | #endif |
68 | } big; | |
69 | #endif | |
70 | }; | |
71 | ||
72 | /* To reduce the memory needed we include some fields of the tables | |
6d52618b | 73 | only conditionally. */ |
5ae3e846 UD |
74 | #if UDIV_TIME > 2 * UMUL_TIME |
75 | # define SEL1(X) X, | |
76 | # define SEL2(X) ,X | |
77 | #else | |
78 | # define SEL1(X) | |
79 | # define SEL2(X) | |
8f5ca04b RM |
80 | #endif |
81 | ||
82 | ||
765bbb24 | 83 | /* We do not compile _itoa if we always can use _itoa_word. */ |
94b07d20 | 84 | #if _ITOA_NEEDED |
8f5ca04b | 85 | /* Local variables. */ |
aa32f798 | 86 | const struct base_table_t _itoa_base_table[] attribute_hidden = |
8f5ca04b | 87 | { |
765bbb24 | 88 | # if BITS_PER_MP_LIMB == 64 |
d8a5edc2 RM |
89 | /* 2 */ {SEL1(0ull) 1, 1}, |
90 | /* 3 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 1}, | |
91 | /* 4 */ {SEL1(0ull) 1, 2}, | |
92 | /* 5 */ {SEL1(0xcccccccccccccccdull) 0, 2}, | |
93 | /* 6 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 2}, | |
94 | /* 7 */ {SEL1(0x2492492492492493ull) 1, 3}, | |
95 | /* 8 */ {SEL1(0ull) 1, 3}, | |
96 | /* 9 */ {SEL1(0xe38e38e38e38e38full) 0, 3}, | |
97 | /* 10 */ {SEL1(0xcccccccccccccccdull) 0, 3}, | |
98 | /* 11 */ {SEL1(0x2e8ba2e8ba2e8ba3ull) 0, 1}, | |
99 | /* 12 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 3}, | |
100 | /* 13 */ {SEL1(0x4ec4ec4ec4ec4ec5ull) 0, 2}, | |
101 | /* 14 */ {SEL1(0x2492492492492493ull) 1, 4}, | |
102 | /* 15 */ {SEL1(0x8888888888888889ull) 0, 3}, | |
103 | /* 16 */ {SEL1(0ull) 1, 4}, | |
104 | /* 17 */ {SEL1(0xf0f0f0f0f0f0f0f1ull) 0, 4}, | |
105 | /* 18 */ {SEL1(0xe38e38e38e38e38full) 0, 4}, | |
106 | /* 19 */ {SEL1(0xd79435e50d79435full) 0, 4}, | |
107 | /* 20 */ {SEL1(0xcccccccccccccccdull) 0, 4}, | |
108 | /* 21 */ {SEL1(0x8618618618618619ull) 1, 5}, | |
109 | /* 22 */ {SEL1(0x2e8ba2e8ba2e8ba3ull) 0, 2}, | |
110 | /* 23 */ {SEL1(0x642c8590b21642c9ull) 1, 5}, | |
111 | /* 24 */ {SEL1(0xaaaaaaaaaaaaaaabull) 0, 4}, | |
112 | /* 25 */ {SEL1(0x47ae147ae147ae15ull) 1, 5}, | |
113 | /* 26 */ {SEL1(0x4ec4ec4ec4ec4ec5ull) 0, 3}, | |
114 | /* 27 */ {SEL1(0x97b425ed097b425full) 0, 4}, | |
115 | /* 28 */ {SEL1(0x2492492492492493ull) 1, 5}, | |
116 | /* 29 */ {SEL1(0x1a7b9611a7b9611bull) 1, 5}, | |
117 | /* 30 */ {SEL1(0x8888888888888889ull) 0, 4}, | |
118 | /* 31 */ {SEL1(0x0842108421084211ull) 1, 5}, | |
119 | /* 32 */ {SEL1(0ull) 1, 5}, | |
120 | /* 33 */ {SEL1(0x0f83e0f83e0f83e1ull) 0, 1}, | |
121 | /* 34 */ {SEL1(0xf0f0f0f0f0f0f0f1ull) 0, 5}, | |
122 | /* 35 */ {SEL1(0xea0ea0ea0ea0ea0full) 0, 5}, | |
123 | /* 36 */ {SEL1(0xe38e38e38e38e38full) 0, 5} | |
765bbb24 UD |
124 | # endif |
125 | # if BITS_PER_MP_LIMB == 32 | |
8f5ca04b RM |
126 | /* 2 */ {SEL1(0ul) 1, 1, {0, 31, 0x80000000ul SEL2(0xfffffffful)}}, |
127 | /* 3 */ {SEL1(0xaaaaaaabul) 0, 1, {0, 20, 0xcfd41b91ul SEL2(0x3b563c24ul)}}, | |
128 | /* 4 */ {SEL1(0ul) 1, 2, {1, 15, 0x40000000ul SEL2(0xfffffffful)}}, | |
129 | /* 5 */ {SEL1(0xcccccccdul) 0, 2, {1, 13, 0x48c27395ul SEL2(0xc25c2684ul)}}, | |
130 | /* 6 */ {SEL1(0xaaaaaaabul) 0, 2, {0, 12, 0x81bf1000ul SEL2(0xf91bd1b6ul)}}, | |
131 | /* 7 */ {SEL1(0x24924925ul) 1, 3, {1, 11, 0x75db9c97ul SEL2(0x1607a2cbul)}}, | |
132 | /* 8 */ {SEL1(0ul) 1, 3, {1, 10, 0x40000000ul SEL2(0xfffffffful)}}, | |
133 | /* 9 */ {SEL1(0x38e38e39ul) 0, 1, {0, 10, 0xcfd41b91ul SEL2(0x3b563c24ul)}}, | |
134 | /* 10 */ {SEL1(0xcccccccdul) 0, 3, {2, 9, 0x3b9aca00ul SEL2(0x12e0be82ul)}}, | |
135 | /* 11 */ {SEL1(0xba2e8ba3ul) 0, 3, {0, 9, 0x8c8b6d2bul SEL2(0xd24cde04ul)}}, | |
136 | /* 12 */ {SEL1(0xaaaaaaabul) 0, 3, {3, 8, 0x19a10000ul SEL2(0x3fa39ab5ul)}}, | |
137 | /* 13 */ {SEL1(0x4ec4ec4ful) 0, 2, {2, 8, 0x309f1021ul SEL2(0x50f8ac5ful)}}, | |
138 | /* 14 */ {SEL1(0x24924925ul) 1, 4, {1, 8, 0x57f6c100ul SEL2(0x74843b1eul)}}, | |
139 | /* 15 */ {SEL1(0x88888889ul) 0, 3, {0, 8, 0x98c29b81ul SEL2(0xad0326c2ul)}}, | |
140 | /* 16 */ {SEL1(0ul) 1, 4, {3, 7, 0x10000000ul SEL2(0xfffffffful)}}, | |
141 | /* 17 */ {SEL1(0xf0f0f0f1ul) 0, 4, {3, 7, 0x18754571ul SEL2(0x4ef0b6bdul)}}, | |
142 | /* 18 */ {SEL1(0x38e38e39ul) 0, 2, {2, 7, 0x247dbc80ul SEL2(0xc0fc48a1ul)}}, | |
143 | /* 19 */ {SEL1(0xaf286bcbul) 1, 5, {2, 7, 0x3547667bul SEL2(0x33838942ul)}}, | |
144 | /* 20 */ {SEL1(0xcccccccdul) 0, 4, {1, 7, 0x4c4b4000ul SEL2(0xad7f29abul)}}, | |
145 | /* 21 */ {SEL1(0x86186187ul) 1, 5, {1, 7, 0x6b5a6e1dul SEL2(0x313c3d15ul)}}, | |
146 | /* 22 */ {SEL1(0xba2e8ba3ul) 0, 4, {0, 7, 0x94ace180ul SEL2(0xb8cca9e0ul)}}, | |
147 | /* 23 */ {SEL1(0xb21642c9ul) 0, 4, {0, 7, 0xcaf18367ul SEL2(0x42ed6de9ul)}}, | |
148 | /* 24 */ {SEL1(0xaaaaaaabul) 0, 4, {4, 6, 0x0b640000ul SEL2(0x67980e0bul)}}, | |
149 | /* 25 */ {SEL1(0x51eb851ful) 0, 3, {4, 6, 0x0e8d4a51ul SEL2(0x19799812ul)}}, | |
150 | /* 26 */ {SEL1(0x4ec4ec4ful) 0, 3, {3, 6, 0x1269ae40ul SEL2(0xbce85396ul)}}, | |
151 | /* 27 */ {SEL1(0x2f684bdbul) 1, 5, {3, 6, 0x17179149ul SEL2(0x62c103a9ul)}}, | |
152 | /* 28 */ {SEL1(0x24924925ul) 1, 5, {3, 6, 0x1cb91000ul SEL2(0x1d353d43ul)}}, | |
153 | /* 29 */ {SEL1(0x8d3dcb09ul) 0, 4, {2, 6, 0x23744899ul SEL2(0xce1deceaul)}}, | |
154 | /* 30 */ {SEL1(0x88888889ul) 0, 4, {2, 6, 0x2b73a840ul SEL2(0x790fc511ul)}}, | |
155 | /* 31 */ {SEL1(0x08421085ul) 1, 5, {2, 6, 0x34e63b41ul SEL2(0x35b865a0ul)}}, | |
156 | /* 32 */ {SEL1(0ul) 1, 5, {1, 6, 0x40000000ul SEL2(0xfffffffful)}}, | |
157 | /* 33 */ {SEL1(0x3e0f83e1ul) 0, 3, {1, 6, 0x4cfa3cc1ul SEL2(0xa9aed1b3ul)}}, | |
158 | /* 34 */ {SEL1(0xf0f0f0f1ul) 0, 5, {1, 6, 0x5c13d840ul SEL2(0x63dfc229ul)}}, | |
159 | /* 35 */ {SEL1(0xd41d41d5ul) 1, 6, {1, 6, 0x6d91b519ul SEL2(0x2b0fee30ul)}}, | |
160 | /* 36 */ {SEL1(0x38e38e39ul) 0, 3, {0, 6, 0x81bf1000ul SEL2(0xf91bd1b6ul)}} | |
765bbb24 | 161 | # endif |
8f5ca04b | 162 | }; |
765bbb24 | 163 | #endif |
8f5ca04b | 164 | |
589bcfde | 165 | #if IS_IN (libc) |
40c38b6c | 166 | char * |
94b07d20 | 167 | _itoa_word (_ITOA_WORD_TYPE value, char *buflim, |
40c38b6c UD |
168 | unsigned int base, int upper_case) |
169 | { | |
170 | const char *digits = (upper_case | |
40c38b6c | 171 | ? _itoa_upper_digits |
5be8418c | 172 | : _itoa_lower_digits); |
40c38b6c UD |
173 | |
174 | switch (base) | |
175 | { | |
176 | #define SPECIAL(Base) \ | |
177 | case Base: \ | |
178 | do \ | |
179 | *--buflim = digits[value % Base]; \ | |
180 | while ((value /= Base) != 0); \ | |
181 | break | |
182 | ||
183 | SPECIAL (10); | |
184 | SPECIAL (16); | |
185 | SPECIAL (8); | |
186 | default: | |
187 | do | |
188 | *--buflim = digits[value % base]; | |
189 | while ((value /= base) != 0); | |
190 | } | |
191 | return buflim; | |
192 | } | |
193 | #undef SPECIAL | |
589bcfde | 194 | #endif /* IS_IN (libc) */ |
40c38b6c UD |
195 | |
196 | ||
94b07d20 | 197 | #if _ITOA_NEEDED |
8f5ca04b | 198 | char * |
f63f2bfd JM |
199 | _itoa (unsigned long long int value, char *buflim, unsigned int base, |
200 | int upper_case) | |
8f5ca04b | 201 | { |
aa32f798 | 202 | const char *digits = (upper_case |
5be8418c AS |
203 | ? _itoa_upper_digits |
204 | : _itoa_lower_digits); | |
d64b6ad0 | 205 | const struct base_table_t *brec = &_itoa_base_table[base - 2]; |
8f5ca04b RM |
206 | |
207 | switch (base) | |
208 | { | |
765bbb24 | 209 | # define RUN_2N(BITS) \ |
4f8dbcb1 | 210 | do \ |
db1ee0a8 | 211 | { \ |
4f8dbcb1 UD |
212 | /* `unsigned long long int' always has 64 bits. */ \ |
213 | mp_limb_t work_hi = value >> (64 - BITS_PER_MP_LIMB); \ | |
214 | \ | |
215 | if (BITS_PER_MP_LIMB == 32) \ | |
216 | { \ | |
217 | if (work_hi != 0) \ | |
218 | { \ | |
219 | mp_limb_t work_lo; \ | |
220 | int cnt; \ | |
221 | \ | |
222 | work_lo = value & 0xfffffffful; \ | |
223 | for (cnt = BITS_PER_MP_LIMB / BITS; cnt > 0; --cnt) \ | |
224 | { \ | |
9710f75d | 225 | *--buflim = digits[work_lo & ((1ul << BITS) - 1)]; \ |
4f8dbcb1 UD |
226 | work_lo >>= BITS; \ |
227 | } \ | |
228 | if (BITS_PER_MP_LIMB % BITS != 0) \ | |
229 | { \ | |
230 | work_lo \ | |
231 | |= ((work_hi \ | |
232 | & ((1 << (BITS - BITS_PER_MP_LIMB%BITS)) \ | |
233 | - 1)) \ | |
234 | << BITS_PER_MP_LIMB % BITS); \ | |
235 | work_hi >>= BITS - BITS_PER_MP_LIMB % BITS; \ | |
236 | if (work_hi == 0) \ | |
237 | work_hi = work_lo; \ | |
238 | else \ | |
9710f75d | 239 | *--buflim = digits[work_lo]; \ |
4f8dbcb1 UD |
240 | } \ |
241 | } \ | |
242 | else \ | |
243 | work_hi = value & 0xfffffffful; \ | |
244 | } \ | |
245 | do \ | |
246 | { \ | |
9710f75d | 247 | *--buflim = digits[work_hi & ((1 << BITS) - 1)]; \ |
4f8dbcb1 UD |
248 | work_hi >>= BITS; \ |
249 | } \ | |
250 | while (work_hi != 0); \ | |
251 | } \ | |
8f5ca04b RM |
252 | while (0) |
253 | case 8: | |
254 | RUN_2N (3); | |
255 | break; | |
256 | ||
257 | case 16: | |
258 | RUN_2N (4); | |
259 | break; | |
260 | ||
261 | default: | |
262 | { | |
6cae3957 | 263 | char *bufend = buflim; |
765bbb24 | 264 | # if BITS_PER_MP_LIMB == 64 |
0e3426bb | 265 | mp_limb_t base_multiplier = brec->base_multiplier; |
8f5ca04b RM |
266 | if (brec->flag) |
267 | while (value != 0) | |
268 | { | |
db1ee0a8 | 269 | mp_limb_t quo, rem, x; |
88d506de | 270 | mp_limb_t dummy __attribute__ ((unused)); |
8f5ca04b RM |
271 | |
272 | umul_ppmm (x, dummy, value, base_multiplier); | |
273 | quo = (x + ((value - x) >> 1)) >> (brec->post_shift - 1); | |
274 | rem = value - quo * base; | |
9710f75d | 275 | *--buflim = digits[rem]; |
8f5ca04b RM |
276 | value = quo; |
277 | } | |
278 | else | |
279 | while (value != 0) | |
280 | { | |
db1ee0a8 | 281 | mp_limb_t quo, rem, x; |
88d506de | 282 | mp_limb_t dummy __attribute__ ((unused)); |
8f5ca04b RM |
283 | |
284 | umul_ppmm (x, dummy, value, base_multiplier); | |
285 | quo = x >> brec->post_shift; | |
286 | rem = value - quo * base; | |
9710f75d | 287 | *--buflim = digits[rem]; |
8f5ca04b RM |
288 | value = quo; |
289 | } | |
765bbb24 UD |
290 | # endif |
291 | # if BITS_PER_MP_LIMB == 32 | |
0e3426bb | 292 | mp_limb_t t[3]; |
8f5ca04b RM |
293 | int n; |
294 | ||
295 | /* First convert x0 to 1-3 words in base s->big.base. | |
296 | Optimize for frequent cases of 32 bit numbers. */ | |
0e3426bb | 297 | if ((mp_limb_t) (value >> 32) >= 1) |
8f5ca04b | 298 | { |
765bbb24 | 299 | # if UDIV_TIME > 2 * UMUL_TIME || UDIV_NEEDS_NORMALIZATION |
8f5ca04b | 300 | int big_normalization_steps = brec->big.normalization_steps; |
7c713e28 RM |
301 | mp_limb_t big_base_norm |
302 | = brec->big.base << big_normalization_steps; | |
765bbb24 | 303 | # endif |
0e3426bb | 304 | if ((mp_limb_t) (value >> 32) >= brec->big.base) |
8f5ca04b | 305 | { |
0e3426bb | 306 | mp_limb_t x1hi, x1lo, r; |
8f5ca04b RM |
307 | /* If you want to optimize this, take advantage of |
308 | that the quotient in the first udiv_qrnnd will | |
309 | always be very small. It might be faster just to | |
310 | subtract in a tight loop. */ | |
311 | ||
765bbb24 | 312 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 313 | mp_limb_t x, xh, xl; |
8f5ca04b RM |
314 | |
315 | if (big_normalization_steps == 0) | |
316 | xh = 0; | |
317 | else | |
cae88996 UD |
318 | xh = (mp_limb_t) (value >> (64 - big_normalization_steps)); |
319 | xl = (mp_limb_t) (value >> (32 - big_normalization_steps)); | |
8f5ca04b RM |
320 | udiv_qrnnd_preinv (x1hi, r, xh, xl, big_base_norm, |
321 | brec->big.base_ninv); | |
322 | ||
0e3426bb | 323 | xl = ((mp_limb_t) value) << big_normalization_steps; |
8f5ca04b | 324 | udiv_qrnnd_preinv (x1lo, x, r, xl, big_base_norm, |
d112ae30 | 325 | brec->big.base_ninv); |
8f5ca04b RM |
326 | t[2] = x >> big_normalization_steps; |
327 | ||
328 | if (big_normalization_steps == 0) | |
329 | xh = x1hi; | |
330 | else | |
331 | xh = ((x1hi << big_normalization_steps) | |
cae88996 | 332 | | (x1lo >> (32 - big_normalization_steps))); |
8f5ca04b RM |
333 | xl = x1lo << big_normalization_steps; |
334 | udiv_qrnnd_preinv (t[0], x, xh, xl, big_base_norm, | |
d112ae30 | 335 | brec->big.base_ninv); |
8f5ca04b | 336 | t[1] = x >> big_normalization_steps; |
765bbb24 | 337 | # elif UDIV_NEEDS_NORMALIZATION |
0e3426bb | 338 | mp_limb_t x, xh, xl; |
8f5ca04b RM |
339 | |
340 | if (big_normalization_steps == 0) | |
341 | xh = 0; | |
342 | else | |
0e3426bb RM |
343 | xh = (mp_limb_t) (value >> 64 - big_normalization_steps); |
344 | xl = (mp_limb_t) (value >> 32 - big_normalization_steps); | |
8f5ca04b RM |
345 | udiv_qrnnd (x1hi, r, xh, xl, big_base_norm); |
346 | ||
0e3426bb | 347 | xl = ((mp_limb_t) value) << big_normalization_steps; |
8f5ca04b RM |
348 | udiv_qrnnd (x1lo, x, r, xl, big_base_norm); |
349 | t[2] = x >> big_normalization_steps; | |
350 | ||
351 | if (big_normalization_steps == 0) | |
352 | xh = x1hi; | |
353 | else | |
354 | xh = ((x1hi << big_normalization_steps) | |
355 | | (x1lo >> 32 - big_normalization_steps)); | |
356 | xl = x1lo << big_normalization_steps; | |
357 | udiv_qrnnd (t[0], x, xh, xl, big_base_norm); | |
358 | t[1] = x >> big_normalization_steps; | |
765bbb24 | 359 | # else |
0e3426bb | 360 | udiv_qrnnd (x1hi, r, 0, (mp_limb_t) (value >> 32), |
8f5ca04b | 361 | brec->big.base); |
0e3426bb | 362 | udiv_qrnnd (x1lo, t[2], r, (mp_limb_t) value, brec->big.base); |
8f5ca04b | 363 | udiv_qrnnd (t[0], t[1], x1hi, x1lo, brec->big.base); |
765bbb24 | 364 | # endif |
8f5ca04b RM |
365 | n = 3; |
366 | } | |
367 | else | |
368 | { | |
765bbb24 | 369 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 370 | mp_limb_t x; |
8f5ca04b RM |
371 | |
372 | value <<= brec->big.normalization_steps; | |
0e3426bb RM |
373 | udiv_qrnnd_preinv (t[0], x, (mp_limb_t) (value >> 32), |
374 | (mp_limb_t) value, big_base_norm, | |
8f5ca04b RM |
375 | brec->big.base_ninv); |
376 | t[1] = x >> brec->big.normalization_steps; | |
765bbb24 | 377 | # elif UDIV_NEEDS_NORMALIZATION |
0e3426bb | 378 | mp_limb_t x; |
8f5ca04b RM |
379 | |
380 | value <<= big_normalization_steps; | |
0e3426bb RM |
381 | udiv_qrnnd (t[0], x, (mp_limb_t) (value >> 32), |
382 | (mp_limb_t) value, big_base_norm); | |
8f5ca04b | 383 | t[1] = x >> big_normalization_steps; |
765bbb24 | 384 | # else |
0e3426bb RM |
385 | udiv_qrnnd (t[0], t[1], (mp_limb_t) (value >> 32), |
386 | (mp_limb_t) value, brec->big.base); | |
765bbb24 | 387 | # endif |
8f5ca04b RM |
388 | n = 2; |
389 | } | |
390 | } | |
391 | else | |
392 | { | |
393 | t[0] = value; | |
394 | n = 1; | |
395 | } | |
396 | ||
397 | /* Convert the 1-3 words in t[], word by word, to ASCII. */ | |
398 | do | |
399 | { | |
0e3426bb | 400 | mp_limb_t ti = t[--n]; |
8f5ca04b RM |
401 | int ndig_for_this_limb = 0; |
402 | ||
765bbb24 | 403 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 404 | mp_limb_t base_multiplier = brec->base_multiplier; |
8f5ca04b RM |
405 | if (brec->flag) |
406 | while (ti != 0) | |
407 | { | |
db1ee0a8 RM |
408 | mp_limb_t quo, rem, x; |
409 | mp_limb_t dummy __attribute__ ((unused)); | |
8f5ca04b RM |
410 | |
411 | umul_ppmm (x, dummy, ti, base_multiplier); | |
412 | quo = (x + ((ti - x) >> 1)) >> (brec->post_shift - 1); | |
413 | rem = ti - quo * base; | |
9710f75d | 414 | *--buflim = digits[rem]; |
8f5ca04b RM |
415 | ti = quo; |
416 | ++ndig_for_this_limb; | |
417 | } | |
418 | else | |
419 | while (ti != 0) | |
420 | { | |
db1ee0a8 RM |
421 | mp_limb_t quo, rem, x; |
422 | mp_limb_t dummy __attribute__ ((unused)); | |
8f5ca04b RM |
423 | |
424 | umul_ppmm (x, dummy, ti, base_multiplier); | |
425 | quo = x >> brec->post_shift; | |
426 | rem = ti - quo * base; | |
9710f75d | 427 | *--buflim = digits[rem]; |
8f5ca04b RM |
428 | ti = quo; |
429 | ++ndig_for_this_limb; | |
430 | } | |
765bbb24 | 431 | # else |
8f5ca04b RM |
432 | while (ti != 0) |
433 | { | |
0e3426bb | 434 | mp_limb_t quo, rem; |
8f5ca04b RM |
435 | |
436 | quo = ti / base; | |
437 | rem = ti % base; | |
9710f75d | 438 | *--buflim = digits[rem]; |
8f5ca04b RM |
439 | ti = quo; |
440 | ++ndig_for_this_limb; | |
441 | } | |
765bbb24 | 442 | # endif |
8f5ca04b RM |
443 | /* If this wasn't the most significant word, pad with zeros. */ |
444 | if (n != 0) | |
445 | while (ndig_for_this_limb < brec->big.ndigits) | |
446 | { | |
9710f75d | 447 | *--buflim = '0'; |
8f5ca04b RM |
448 | ++ndig_for_this_limb; |
449 | } | |
450 | } | |
451 | while (n != 0); | |
765bbb24 | 452 | # endif |
6cae3957 UD |
453 | if (buflim == bufend) |
454 | *--buflim = '0'; | |
8f5ca04b RM |
455 | } |
456 | break; | |
457 | } | |
458 | ||
9710f75d | 459 | return buflim; |
8f5ca04b | 460 | } |
765bbb24 | 461 | #endif |
9c7ff11a UD |
462 | |
463 | char * | |
94b07d20 L |
464 | _fitoa_word (_ITOA_WORD_TYPE value, char *buf, unsigned int base, |
465 | int upper_case) | |
9c7ff11a UD |
466 | { |
467 | char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */ | |
468 | char *cp = _itoa_word (value, tmpbuf + sizeof (value) * 4, base, upper_case); | |
469 | while (cp < tmpbuf + sizeof (value) * 4) | |
470 | *buf++ = *cp++; | |
471 | return buf; | |
472 | } | |
473 | ||
94b07d20 | 474 | #if _ITOA_NEEDED |
9c7ff11a UD |
475 | char * |
476 | _fitoa (unsigned long long value, char *buf, unsigned int base, int upper_case) | |
477 | { | |
478 | char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */ | |
479 | char *cp = _itoa (value, tmpbuf + sizeof (value) * 4, base, upper_case); | |
480 | while (cp < tmpbuf + sizeof (value) * 4) | |
481 | *buf++ = *cp++; | |
482 | return buf; | |
483 | } | |
765bbb24 | 484 | #endif |