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28f540f4 | 1 | /* Internal function for converting integers to ASCII. |
5be8418c | 2 | Copyright (C) 1994-2012 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 PE |
18 | License along with the GNU C Library; if not, see |
19 | <http://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 RM |
193 | char * |
194 | _itoa (value, buflim, base, upper_case) | |
195 | unsigned long long int value; | |
196 | char *buflim; | |
197 | unsigned int base; | |
198 | int upper_case; | |
199 | { | |
aa32f798 | 200 | const char *digits = (upper_case |
5be8418c AS |
201 | ? _itoa_upper_digits |
202 | : _itoa_lower_digits); | |
d64b6ad0 | 203 | const struct base_table_t *brec = &_itoa_base_table[base - 2]; |
8f5ca04b RM |
204 | |
205 | switch (base) | |
206 | { | |
765bbb24 | 207 | # define RUN_2N(BITS) \ |
4f8dbcb1 | 208 | do \ |
db1ee0a8 | 209 | { \ |
4f8dbcb1 UD |
210 | /* `unsigned long long int' always has 64 bits. */ \ |
211 | mp_limb_t work_hi = value >> (64 - BITS_PER_MP_LIMB); \ | |
212 | \ | |
213 | if (BITS_PER_MP_LIMB == 32) \ | |
214 | { \ | |
215 | if (work_hi != 0) \ | |
216 | { \ | |
217 | mp_limb_t work_lo; \ | |
218 | int cnt; \ | |
219 | \ | |
220 | work_lo = value & 0xfffffffful; \ | |
221 | for (cnt = BITS_PER_MP_LIMB / BITS; cnt > 0; --cnt) \ | |
222 | { \ | |
9710f75d | 223 | *--buflim = digits[work_lo & ((1ul << BITS) - 1)]; \ |
4f8dbcb1 UD |
224 | work_lo >>= BITS; \ |
225 | } \ | |
226 | if (BITS_PER_MP_LIMB % BITS != 0) \ | |
227 | { \ | |
228 | work_lo \ | |
229 | |= ((work_hi \ | |
230 | & ((1 << (BITS - BITS_PER_MP_LIMB%BITS)) \ | |
231 | - 1)) \ | |
232 | << BITS_PER_MP_LIMB % BITS); \ | |
233 | work_hi >>= BITS - BITS_PER_MP_LIMB % BITS; \ | |
234 | if (work_hi == 0) \ | |
235 | work_hi = work_lo; \ | |
236 | else \ | |
9710f75d | 237 | *--buflim = digits[work_lo]; \ |
4f8dbcb1 UD |
238 | } \ |
239 | } \ | |
240 | else \ | |
241 | work_hi = value & 0xfffffffful; \ | |
242 | } \ | |
243 | do \ | |
244 | { \ | |
9710f75d | 245 | *--buflim = digits[work_hi & ((1 << BITS) - 1)]; \ |
4f8dbcb1 UD |
246 | work_hi >>= BITS; \ |
247 | } \ | |
248 | while (work_hi != 0); \ | |
249 | } \ | |
8f5ca04b RM |
250 | while (0) |
251 | case 8: | |
252 | RUN_2N (3); | |
253 | break; | |
254 | ||
255 | case 16: | |
256 | RUN_2N (4); | |
257 | break; | |
258 | ||
259 | default: | |
260 | { | |
6cae3957 | 261 | char *bufend = buflim; |
765bbb24 | 262 | # if BITS_PER_MP_LIMB == 64 |
0e3426bb | 263 | mp_limb_t base_multiplier = brec->base_multiplier; |
8f5ca04b RM |
264 | if (brec->flag) |
265 | while (value != 0) | |
266 | { | |
db1ee0a8 | 267 | mp_limb_t quo, rem, x; |
88d506de | 268 | mp_limb_t dummy __attribute__ ((unused)); |
8f5ca04b RM |
269 | |
270 | umul_ppmm (x, dummy, value, base_multiplier); | |
271 | quo = (x + ((value - x) >> 1)) >> (brec->post_shift - 1); | |
272 | rem = value - quo * base; | |
9710f75d | 273 | *--buflim = digits[rem]; |
8f5ca04b RM |
274 | value = quo; |
275 | } | |
276 | else | |
277 | while (value != 0) | |
278 | { | |
db1ee0a8 | 279 | mp_limb_t quo, rem, x; |
88d506de | 280 | mp_limb_t dummy __attribute__ ((unused)); |
8f5ca04b RM |
281 | |
282 | umul_ppmm (x, dummy, value, base_multiplier); | |
283 | quo = x >> brec->post_shift; | |
284 | rem = value - quo * base; | |
9710f75d | 285 | *--buflim = digits[rem]; |
8f5ca04b RM |
286 | value = quo; |
287 | } | |
765bbb24 UD |
288 | # endif |
289 | # if BITS_PER_MP_LIMB == 32 | |
0e3426bb | 290 | mp_limb_t t[3]; |
8f5ca04b RM |
291 | int n; |
292 | ||
293 | /* First convert x0 to 1-3 words in base s->big.base. | |
294 | Optimize for frequent cases of 32 bit numbers. */ | |
0e3426bb | 295 | if ((mp_limb_t) (value >> 32) >= 1) |
8f5ca04b | 296 | { |
765bbb24 | 297 | # if UDIV_TIME > 2 * UMUL_TIME || UDIV_NEEDS_NORMALIZATION |
8f5ca04b | 298 | int big_normalization_steps = brec->big.normalization_steps; |
7c713e28 RM |
299 | mp_limb_t big_base_norm |
300 | = brec->big.base << big_normalization_steps; | |
765bbb24 | 301 | # endif |
0e3426bb | 302 | if ((mp_limb_t) (value >> 32) >= brec->big.base) |
8f5ca04b | 303 | { |
0e3426bb | 304 | mp_limb_t x1hi, x1lo, r; |
8f5ca04b RM |
305 | /* If you want to optimize this, take advantage of |
306 | that the quotient in the first udiv_qrnnd will | |
307 | always be very small. It might be faster just to | |
308 | subtract in a tight loop. */ | |
309 | ||
765bbb24 | 310 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 311 | mp_limb_t x, xh, xl; |
8f5ca04b RM |
312 | |
313 | if (big_normalization_steps == 0) | |
314 | xh = 0; | |
315 | else | |
cae88996 UD |
316 | xh = (mp_limb_t) (value >> (64 - big_normalization_steps)); |
317 | xl = (mp_limb_t) (value >> (32 - big_normalization_steps)); | |
8f5ca04b RM |
318 | udiv_qrnnd_preinv (x1hi, r, xh, xl, big_base_norm, |
319 | brec->big.base_ninv); | |
320 | ||
0e3426bb | 321 | xl = ((mp_limb_t) value) << big_normalization_steps; |
8f5ca04b | 322 | udiv_qrnnd_preinv (x1lo, x, r, xl, big_base_norm, |
d112ae30 | 323 | brec->big.base_ninv); |
8f5ca04b RM |
324 | t[2] = x >> big_normalization_steps; |
325 | ||
326 | if (big_normalization_steps == 0) | |
327 | xh = x1hi; | |
328 | else | |
329 | xh = ((x1hi << big_normalization_steps) | |
cae88996 | 330 | | (x1lo >> (32 - big_normalization_steps))); |
8f5ca04b RM |
331 | xl = x1lo << big_normalization_steps; |
332 | udiv_qrnnd_preinv (t[0], x, xh, xl, big_base_norm, | |
d112ae30 | 333 | brec->big.base_ninv); |
8f5ca04b | 334 | t[1] = x >> big_normalization_steps; |
765bbb24 | 335 | # elif UDIV_NEEDS_NORMALIZATION |
0e3426bb | 336 | mp_limb_t x, xh, xl; |
8f5ca04b RM |
337 | |
338 | if (big_normalization_steps == 0) | |
339 | xh = 0; | |
340 | else | |
0e3426bb RM |
341 | xh = (mp_limb_t) (value >> 64 - big_normalization_steps); |
342 | xl = (mp_limb_t) (value >> 32 - big_normalization_steps); | |
8f5ca04b RM |
343 | udiv_qrnnd (x1hi, r, xh, xl, big_base_norm); |
344 | ||
0e3426bb | 345 | xl = ((mp_limb_t) value) << big_normalization_steps; |
8f5ca04b RM |
346 | udiv_qrnnd (x1lo, x, r, xl, big_base_norm); |
347 | t[2] = x >> big_normalization_steps; | |
348 | ||
349 | if (big_normalization_steps == 0) | |
350 | xh = x1hi; | |
351 | else | |
352 | xh = ((x1hi << big_normalization_steps) | |
353 | | (x1lo >> 32 - big_normalization_steps)); | |
354 | xl = x1lo << big_normalization_steps; | |
355 | udiv_qrnnd (t[0], x, xh, xl, big_base_norm); | |
356 | t[1] = x >> big_normalization_steps; | |
765bbb24 | 357 | # else |
0e3426bb | 358 | udiv_qrnnd (x1hi, r, 0, (mp_limb_t) (value >> 32), |
8f5ca04b | 359 | brec->big.base); |
0e3426bb | 360 | udiv_qrnnd (x1lo, t[2], r, (mp_limb_t) value, brec->big.base); |
8f5ca04b | 361 | udiv_qrnnd (t[0], t[1], x1hi, x1lo, brec->big.base); |
765bbb24 | 362 | # endif |
8f5ca04b RM |
363 | n = 3; |
364 | } | |
365 | else | |
366 | { | |
765bbb24 | 367 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 368 | mp_limb_t x; |
8f5ca04b RM |
369 | |
370 | value <<= brec->big.normalization_steps; | |
0e3426bb RM |
371 | udiv_qrnnd_preinv (t[0], x, (mp_limb_t) (value >> 32), |
372 | (mp_limb_t) value, big_base_norm, | |
8f5ca04b RM |
373 | brec->big.base_ninv); |
374 | t[1] = x >> brec->big.normalization_steps; | |
765bbb24 | 375 | # elif UDIV_NEEDS_NORMALIZATION |
0e3426bb | 376 | mp_limb_t x; |
8f5ca04b RM |
377 | |
378 | value <<= big_normalization_steps; | |
0e3426bb RM |
379 | udiv_qrnnd (t[0], x, (mp_limb_t) (value >> 32), |
380 | (mp_limb_t) value, big_base_norm); | |
8f5ca04b | 381 | t[1] = x >> big_normalization_steps; |
765bbb24 | 382 | # else |
0e3426bb RM |
383 | udiv_qrnnd (t[0], t[1], (mp_limb_t) (value >> 32), |
384 | (mp_limb_t) value, brec->big.base); | |
765bbb24 | 385 | # endif |
8f5ca04b RM |
386 | n = 2; |
387 | } | |
388 | } | |
389 | else | |
390 | { | |
391 | t[0] = value; | |
392 | n = 1; | |
393 | } | |
394 | ||
395 | /* Convert the 1-3 words in t[], word by word, to ASCII. */ | |
396 | do | |
397 | { | |
0e3426bb | 398 | mp_limb_t ti = t[--n]; |
8f5ca04b RM |
399 | int ndig_for_this_limb = 0; |
400 | ||
765bbb24 | 401 | # if UDIV_TIME > 2 * UMUL_TIME |
0e3426bb | 402 | mp_limb_t base_multiplier = brec->base_multiplier; |
8f5ca04b RM |
403 | if (brec->flag) |
404 | while (ti != 0) | |
405 | { | |
db1ee0a8 RM |
406 | mp_limb_t quo, rem, x; |
407 | mp_limb_t dummy __attribute__ ((unused)); | |
8f5ca04b RM |
408 | |
409 | umul_ppmm (x, dummy, ti, base_multiplier); | |
410 | quo = (x + ((ti - x) >> 1)) >> (brec->post_shift - 1); | |
411 | rem = ti - quo * base; | |
9710f75d | 412 | *--buflim = digits[rem]; |
8f5ca04b RM |
413 | ti = quo; |
414 | ++ndig_for_this_limb; | |
415 | } | |
416 | else | |
417 | while (ti != 0) | |
418 | { | |
db1ee0a8 RM |
419 | mp_limb_t quo, rem, x; |
420 | mp_limb_t dummy __attribute__ ((unused)); | |
8f5ca04b RM |
421 | |
422 | umul_ppmm (x, dummy, ti, base_multiplier); | |
423 | quo = x >> brec->post_shift; | |
424 | rem = ti - quo * base; | |
9710f75d | 425 | *--buflim = digits[rem]; |
8f5ca04b RM |
426 | ti = quo; |
427 | ++ndig_for_this_limb; | |
428 | } | |
765bbb24 | 429 | # else |
8f5ca04b RM |
430 | while (ti != 0) |
431 | { | |
0e3426bb | 432 | mp_limb_t quo, rem; |
8f5ca04b RM |
433 | |
434 | quo = ti / base; | |
435 | rem = ti % base; | |
9710f75d | 436 | *--buflim = digits[rem]; |
8f5ca04b RM |
437 | ti = quo; |
438 | ++ndig_for_this_limb; | |
439 | } | |
765bbb24 | 440 | # endif |
8f5ca04b RM |
441 | /* If this wasn't the most significant word, pad with zeros. */ |
442 | if (n != 0) | |
443 | while (ndig_for_this_limb < brec->big.ndigits) | |
444 | { | |
9710f75d | 445 | *--buflim = '0'; |
8f5ca04b RM |
446 | ++ndig_for_this_limb; |
447 | } | |
448 | } | |
449 | while (n != 0); | |
765bbb24 | 450 | # endif |
6cae3957 UD |
451 | if (buflim == bufend) |
452 | *--buflim = '0'; | |
8f5ca04b RM |
453 | } |
454 | break; | |
455 | } | |
456 | ||
9710f75d | 457 | return buflim; |
8f5ca04b | 458 | } |
765bbb24 | 459 | #endif |
9c7ff11a UD |
460 | |
461 | char * | |
94b07d20 L |
462 | _fitoa_word (_ITOA_WORD_TYPE value, char *buf, unsigned int base, |
463 | int upper_case) | |
9c7ff11a UD |
464 | { |
465 | char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */ | |
466 | char *cp = _itoa_word (value, tmpbuf + sizeof (value) * 4, base, upper_case); | |
467 | while (cp < tmpbuf + sizeof (value) * 4) | |
468 | *buf++ = *cp++; | |
469 | return buf; | |
470 | } | |
471 | ||
94b07d20 | 472 | #if _ITOA_NEEDED |
9c7ff11a UD |
473 | char * |
474 | _fitoa (unsigned long 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 (value, tmpbuf + sizeof (value) * 4, base, upper_case); | |
478 | while (cp < tmpbuf + sizeof (value) * 4) | |
479 | *buf++ = *cp++; | |
480 | return buf; | |
481 | } | |
765bbb24 | 482 | #endif |