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author | Daniel Stenberg <daniel@haxx.se> | 2003-03-04 15:52:56 +0000 |
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committer | Daniel Stenberg <daniel@haxx.se> | 2003-03-04 15:52:56 +0000 |
commit | 3aeb55f3858a1eca0a3b9ba8f212e889d19c0194 (patch) | |
tree | e8477cc3c1d17c36067a14eab398ae27563b5759 /uisimulator/common/libmad/fixed.h | |
parent | 2e638cf8d57d5d253925b55e58b5b019446b6bcc (diff) | |
download | rockbox-3aeb55f3858a1eca0a3b9ba8f212e889d19c0194.tar.gz rockbox-3aeb55f3858a1eca0a3b9ba8f212e889d19c0194.zip |
no one ever uses libmad, remove it from our CVS
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3382 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'uisimulator/common/libmad/fixed.h')
-rw-r--r-- | uisimulator/common/libmad/fixed.h | 476 |
1 files changed, 0 insertions, 476 deletions
diff --git a/uisimulator/common/libmad/fixed.h b/uisimulator/common/libmad/fixed.h deleted file mode 100644 index 17db8789ee..0000000000 --- a/uisimulator/common/libmad/fixed.h +++ /dev/null | |||
@@ -1,476 +0,0 @@ | |||
1 | /* | ||
2 | * libmad - MPEG audio decoder library | ||
3 | * Copyright (C) 2000-2001 Robert Leslie | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or modify | ||
6 | * it under the terms of the GNU General Public License as published by | ||
7 | * the Free Software Foundation; either version 2 of the License, or | ||
8 | * (at your option) any later version. | ||
9 | * | ||
10 | * This program 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 | ||
13 | * GNU General Public License for more details. | ||
14 | * | ||
15 | * You should have received a copy of the GNU General Public License | ||
16 | * along with this program; if not, write to the Free Software | ||
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
18 | * | ||
19 | * $Id$ | ||
20 | */ | ||
21 | |||
22 | # ifndef LIBMAD_FIXED_H | ||
23 | # define LIBMAD_FIXED_H | ||
24 | |||
25 | # if SIZEOF_INT >= 4 | ||
26 | typedef signed int mad_fixed_t; | ||
27 | |||
28 | typedef signed int mad_fixed64hi_t; | ||
29 | typedef unsigned int mad_fixed64lo_t; | ||
30 | # else | ||
31 | typedef signed long mad_fixed_t; | ||
32 | |||
33 | typedef signed long mad_fixed64hi_t; | ||
34 | typedef unsigned long mad_fixed64lo_t; | ||
35 | # endif | ||
36 | |||
37 | # if defined(_MSC_VER) | ||
38 | # define mad_fixed64_t signed __int64 | ||
39 | # elif 1 || defined(__GNUC__) | ||
40 | # define mad_fixed64_t signed long long | ||
41 | # endif | ||
42 | |||
43 | # if defined(FPM_FLOAT) | ||
44 | typedef double mad_sample_t; | ||
45 | # else | ||
46 | typedef mad_fixed_t mad_sample_t; | ||
47 | # endif | ||
48 | |||
49 | /* | ||
50 | * Fixed-point format: 0xABBBBBBB | ||
51 | * A == whole part (sign + 3 bits) | ||
52 | * B == fractional part (28 bits) | ||
53 | * | ||
54 | * Values are signed two's complement, so the effective range is: | ||
55 | * 0x80000000 to 0x7fffffff | ||
56 | * -8.0 to +7.9999999962747097015380859375 | ||
57 | * | ||
58 | * The smallest representable value is: | ||
59 | * 0x00000001 == 0.0000000037252902984619140625 (i.e. about 3.725e-9) | ||
60 | * | ||
61 | * 28 bits of fractional accuracy represent about | ||
62 | * 8.6 digits of decimal accuracy. | ||
63 | * | ||
64 | * Fixed-point numbers can be added or subtracted as normal | ||
65 | * integers, but multiplication requires shifting the 64-bit result | ||
66 | * from 56 fractional bits back to 28 (and rounding.) | ||
67 | * | ||
68 | * Changing the definition of MAD_F_FRACBITS is only partially | ||
69 | * supported, and must be done with care. | ||
70 | */ | ||
71 | |||
72 | # define MAD_F_FRACBITS 28 | ||
73 | |||
74 | # if MAD_F_FRACBITS == 28 | ||
75 | # define MAD_F(x) ((mad_fixed_t) (x##L)) | ||
76 | # else | ||
77 | # if MAD_F_FRACBITS < 28 | ||
78 | # warning "MAD_F_FRACBITS < 28" | ||
79 | # define MAD_F(x) ((mad_fixed_t) \ | ||
80 | (((x##L) + \ | ||
81 | (1L << (28 - MAD_F_FRACBITS - 1))) >> \ | ||
82 | (28 - MAD_F_FRACBITS))) | ||
83 | # elif MAD_F_FRACBITS > 28 | ||
84 | # error "MAD_F_FRACBITS > 28 not currently supported" | ||
85 | # define MAD_F(x) ((mad_fixed_t) \ | ||
86 | ((x##L) << (MAD_F_FRACBITS - 28))) | ||
87 | # endif | ||
88 | # endif | ||
89 | |||
90 | # define MAD_F_MIN ((mad_fixed_t) -0x80000000L) | ||
91 | # define MAD_F_MAX ((mad_fixed_t) +0x7fffffffL) | ||
92 | |||
93 | # define MAD_F_ONE MAD_F(0x10000000) | ||
94 | |||
95 | # define mad_f_tofixed(x) ((mad_fixed_t) \ | ||
96 | ((x) * (double) (1L << MAD_F_FRACBITS) + 0.5)) | ||
97 | # define mad_f_todouble(x) ((double) \ | ||
98 | ((x) / (double) (1L << MAD_F_FRACBITS))) | ||
99 | |||
100 | # define mad_f_intpart(x) ((x) >> MAD_F_FRACBITS) | ||
101 | # define mad_f_fracpart(x) ((x) & ((1L << MAD_F_FRACBITS) - 1)) | ||
102 | /* (x should be positive) */ | ||
103 | |||
104 | # define mad_f_fromint(x) ((x) << MAD_F_FRACBITS) | ||
105 | |||
106 | # define mad_f_add(x, y) ((x) + (y)) | ||
107 | # define mad_f_sub(x, y) ((x) - (y)) | ||
108 | |||
109 | # if defined(FPM_FLOAT) | ||
110 | # error "FPM_FLOAT not yet supported" | ||
111 | |||
112 | # undef MAD_F | ||
113 | # define MAD_F(x) mad_f_todouble(x) | ||
114 | |||
115 | # define mad_f_mul(x, y) ((x) * (y)) | ||
116 | # define mad_f_scale64 | ||
117 | |||
118 | # undef ASO_ZEROCHECK | ||
119 | |||
120 | # elif defined(FPM_64BIT) | ||
121 | |||
122 | /* | ||
123 | * This version should be the most accurate if 64-bit types are supported by | ||
124 | * the compiler, although it may not be the most efficient. | ||
125 | */ | ||
126 | # if defined(OPT_ACCURACY) | ||
127 | # define mad_f_mul(x, y) \ | ||
128 | ((mad_fixed_t) \ | ||
129 | ((((mad_fixed64_t) (x) * (y)) + \ | ||
130 | (1L << (MAD_F_SCALEBITS - 1))) >> MAD_F_SCALEBITS)) | ||
131 | # else | ||
132 | # define mad_f_mul(x, y) \ | ||
133 | ((mad_fixed_t) (((mad_fixed64_t) (x) * (y)) >> MAD_F_SCALEBITS)) | ||
134 | # endif | ||
135 | |||
136 | # define MAD_F_SCALEBITS MAD_F_FRACBITS | ||
137 | |||
138 | /* --- Intel --------------------------------------------------------------- */ | ||
139 | |||
140 | # elif defined(FPM_INTEL) | ||
141 | |||
142 | # if defined(_MSC_VER) | ||
143 | # pragma warning(push) | ||
144 | # pragma warning(disable: 4035) /* no return value */ | ||
145 | static __forceinline | ||
146 | mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y) | ||
147 | { | ||
148 | enum { | ||
149 | fracbits = MAD_F_FRACBITS | ||
150 | }; | ||
151 | |||
152 | __asm { | ||
153 | mov eax, x | ||
154 | imul y | ||
155 | shrd eax, edx, fracbits | ||
156 | } | ||
157 | |||
158 | /* implicit return of eax */ | ||
159 | } | ||
160 | # pragma warning(pop) | ||
161 | |||
162 | # define mad_f_mul mad_f_mul_inline | ||
163 | # define mad_f_scale64 | ||
164 | # else | ||
165 | /* | ||
166 | * This Intel version is fast and accurate; the disposition of the least | ||
167 | * significant bit depends on OPT_ACCURACY via mad_f_scale64(). | ||
168 | */ | ||
169 | # define MAD_F_MLX(hi, lo, x, y) \ | ||
170 | asm ("imull %3" \ | ||
171 | : "=a" (lo), "=d" (hi) \ | ||
172 | : "%a" (x), "rm" (y) \ | ||
173 | : "cc") | ||
174 | |||
175 | # if defined(OPT_ACCURACY) | ||
176 | /* | ||
177 | * This gives best accuracy but is not very fast. | ||
178 | */ | ||
179 | # define MAD_F_MLA(hi, lo, x, y) \ | ||
180 | ({ mad_fixed64hi_t __hi; \ | ||
181 | mad_fixed64lo_t __lo; \ | ||
182 | MAD_F_MLX(__hi, __lo, (x), (y)); \ | ||
183 | asm ("addl %2,%0\n\t" \ | ||
184 | "adcl %3,%1" \ | ||
185 | : "=rm" (lo), "=rm" (hi) \ | ||
186 | : "r" (__lo), "r" (__hi), "0" (lo), "1" (hi) \ | ||
187 | : "cc"); \ | ||
188 | }) | ||
189 | # endif /* OPT_ACCURACY */ | ||
190 | |||
191 | # if defined(OPT_ACCURACY) | ||
192 | /* | ||
193 | * Surprisingly, this is faster than SHRD followed by ADC. | ||
194 | */ | ||
195 | # define mad_f_scale64(hi, lo) \ | ||
196 | ({ mad_fixed64hi_t __hi_; \ | ||
197 | mad_fixed64lo_t __lo_; \ | ||
198 | mad_fixed_t __result; \ | ||
199 | asm ("addl %4,%2\n\t" \ | ||
200 | "adcl %5,%3" \ | ||
201 | : "=rm" (__lo_), "=rm" (__hi_) \ | ||
202 | : "0" (lo), "1" (hi), \ | ||
203 | "ir" (1L << (MAD_F_SCALEBITS - 1)), "ir" (0) \ | ||
204 | : "cc"); \ | ||
205 | asm ("shrdl %3,%2,%1" \ | ||
206 | : "=rm" (__result) \ | ||
207 | : "0" (__lo_), "r" (__hi_), "I" (MAD_F_SCALEBITS) \ | ||
208 | : "cc"); \ | ||
209 | __result; \ | ||
210 | }) | ||
211 | # else | ||
212 | # define mad_f_scale64(hi, lo) \ | ||
213 | ({ mad_fixed_t __result; \ | ||
214 | asm ("shrdl %3,%2,%1" \ | ||
215 | : "=rm" (__result) \ | ||
216 | : "0" (lo), "r" (hi), "I" (MAD_F_SCALEBITS) \ | ||
217 | : "cc"); \ | ||
218 | __result; \ | ||
219 | }) | ||
220 | # endif /* OPT_ACCURACY */ | ||
221 | |||
222 | # define MAD_F_SCALEBITS MAD_F_FRACBITS | ||
223 | # endif | ||
224 | |||
225 | /* --- ARM ----------------------------------------------------------------- */ | ||
226 | |||
227 | # elif defined(FPM_ARM) | ||
228 | |||
229 | /* | ||
230 | * This ARM V4 version is as accurate as FPM_64BIT but much faster. The | ||
231 | * least significant bit is properly rounded at no CPU cycle cost! | ||
232 | */ | ||
233 | # if 1 | ||
234 | /* | ||
235 | * There's a bug somewhere, possibly in the compiler, that sometimes makes | ||
236 | * this necessary instead of the default implementation via MAD_F_MLX and | ||
237 | * mad_f_scale64. It may be related to the use (or lack) of | ||
238 | * -finline-functions and/or -fstrength-reduce. | ||
239 | * | ||
240 | * This is also apparently faster than MAD_F_MLX/mad_f_scale64. | ||
241 | */ | ||
242 | # define mad_f_mul(x, y) \ | ||
243 | ({ mad_fixed64hi_t __hi; \ | ||
244 | mad_fixed64lo_t __lo; \ | ||
245 | mad_fixed_t __result; \ | ||
246 | asm ("smull %0, %1, %3, %4\n\t" \ | ||
247 | "movs %0, %0, lsr %5\n\t" \ | ||
248 | "adc %2, %0, %1, lsl %6" \ | ||
249 | : "=&r" (__lo), "=&r" (__hi), "=r" (__result) \ | ||
250 | : "%r" (x), "r" (y), \ | ||
251 | "M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS) \ | ||
252 | : "cc"); \ | ||
253 | __result; \ | ||
254 | }) | ||
255 | # endif | ||
256 | |||
257 | # define MAD_F_MLX(hi, lo, x, y) \ | ||
258 | asm ("smull %0, %1, %2, %3" \ | ||
259 | : "=&r" (lo), "=&r" (hi) \ | ||
260 | : "%r" (x), "r" (y)) | ||
261 | |||
262 | # define MAD_F_MLA(hi, lo, x, y) \ | ||
263 | asm ("smlal %0, %1, %2, %3" \ | ||
264 | : "+r" (lo), "+r" (hi) \ | ||
265 | : "%r" (x), "r" (y)) | ||
266 | |||
267 | # define MAD_F_MLN(hi, lo) \ | ||
268 | asm ("rsbs %0, %2, #0\n\t" \ | ||
269 | "rsc %1, %3, #0" \ | ||
270 | : "=r" (lo), "=r" (hi) \ | ||
271 | : "0" (lo), "1" (hi) \ | ||
272 | : "cc") | ||
273 | |||
274 | # define mad_f_scale64(hi, lo) \ | ||
275 | ({ mad_fixed_t __result; \ | ||
276 | asm ("movs %0, %1, lsr %3\n\t" \ | ||
277 | "adc %0, %0, %2, lsl %4" \ | ||
278 | : "=r" (__result) \ | ||
279 | : "r" (lo), "r" (hi), \ | ||
280 | "M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS) \ | ||
281 | : "cc"); \ | ||
282 | __result; \ | ||
283 | }) | ||
284 | |||
285 | # define MAD_F_SCALEBITS MAD_F_FRACBITS | ||
286 | |||
287 | /* --- MIPS ---------------------------------------------------------------- */ | ||
288 | |||
289 | # elif defined(FPM_MIPS) | ||
290 | |||
291 | /* | ||
292 | * This MIPS version is fast and accurate; the disposition of the least | ||
293 | * significant bit depends on OPT_ACCURACY via mad_f_scale64(). | ||
294 | */ | ||
295 | # define MAD_F_MLX(hi, lo, x, y) \ | ||
296 | asm ("mult %2,%3" \ | ||
297 | : "=l" (lo), "=h" (hi) \ | ||
298 | : "%r" (x), "r" (y)) | ||
299 | |||
300 | # if defined(HAVE_MADD_ASM) | ||
301 | # define MAD_F_MLA(hi, lo, x, y) \ | ||
302 | asm ("madd %2,%3" \ | ||
303 | : "+l" (lo), "+h" (hi) \ | ||
304 | : "%r" (x), "r" (y)) | ||
305 | # elif defined(HAVE_MADD16_ASM) | ||
306 | /* | ||
307 | * This loses significant accuracy due to the 16-bit integer limit in the | ||
308 | * multiply/accumulate instruction. | ||
309 | */ | ||
310 | # define MAD_F_ML0(hi, lo, x, y) \ | ||
311 | asm ("mult %2,%3" \ | ||
312 | : "=l" (lo), "=h" (hi) \ | ||
313 | : "%r" ((x) >> 12), "r" ((y) >> 16)) | ||
314 | # define MAD_F_MLA(hi, lo, x, y) \ | ||
315 | asm ("madd16 %2,%3" \ | ||
316 | : "+l" (lo), "+h" (hi) \ | ||
317 | : "%r" ((x) >> 12), "r" ((y) >> 16)) | ||
318 | # define MAD_F_MLZ(hi, lo) ((mad_fixed_t) (lo)) | ||
319 | # endif | ||
320 | |||
321 | # if defined(OPT_SPEED) | ||
322 | # define mad_f_scale64(hi, lo) \ | ||
323 | ((mad_fixed_t) ((hi) << (32 - MAD_F_SCALEBITS))) | ||
324 | # define MAD_F_SCALEBITS MAD_F_FRACBITS | ||
325 | # endif | ||
326 | |||
327 | /* --- SPARC --------------------------------------------------------------- */ | ||
328 | |||
329 | # elif defined(FPM_SPARC) | ||
330 | |||
331 | /* | ||
332 | * This SPARC V8 version is fast and accurate; the disposition of the least | ||
333 | * significant bit depends on OPT_ACCURACY via mad_f_scale64(). | ||
334 | */ | ||
335 | # define MAD_F_MLX(hi, lo, x, y) \ | ||
336 | asm ("smul %2, %3, %0\n\t" \ | ||
337 | "rd %%y, %1" \ | ||
338 | : "=r" (lo), "=r" (hi) \ | ||
339 | : "%r" (x), "rI" (y)) | ||
340 | |||
341 | /* --- PowerPC ------------------------------------------------------------- */ | ||
342 | |||
343 | # elif defined(FPM_PPC) | ||
344 | |||
345 | /* | ||
346 | * This PowerPC version is tuned for the 4xx embedded processors. It is | ||
347 | * effectively a tuned version of FPM_64BIT. It is a little faster and just | ||
348 | * as accurate. The disposition of the least significant bit depends on | ||
349 | * OPT_ACCURACY via mad_f_scale64(). | ||
350 | */ | ||
351 | # define MAD_F_MLX(hi, lo, x, y) \ | ||
352 | asm ("mulhw %1, %2, %3\n\t" \ | ||
353 | "mullw %0, %2, %3" \ | ||
354 | : "=&r" (lo), "=&r" (hi) \ | ||
355 | : "%r" (x), "r" (y)) | ||
356 | |||
357 | # define MAD_F_MLA(hi, lo, x, y) \ | ||
358 | ({ mad_fixed64hi_t __hi; \ | ||
359 | mad_fixed64lo_t __lo; \ | ||
360 | MAD_F_MLX(__hi, __lo, (x), (y)); \ | ||
361 | asm ("addc %0, %2, %3\n\t" \ | ||
362 | "adde %1, %4, %5" \ | ||
363 | : "=r" (lo), "=r" (hi) \ | ||
364 | : "%r" (__lo), "0" (lo), "%r" (__hi), "1" (hi)); \ | ||
365 | }) | ||
366 | |||
367 | # if defined(OPT_ACCURACY) | ||
368 | /* | ||
369 | * This is accurate and ~2 - 2.5 times slower than the unrounded version. | ||
370 | * | ||
371 | * The __volatile__ improves the generated code by another 5% (fewer spills | ||
372 | * to memory); eventually they should be removed. | ||
373 | */ | ||
374 | # define mad_f_scale64(hi, lo) \ | ||
375 | ({ mad_fixed_t __result; \ | ||
376 | mad_fixed64hi_t __hi_; \ | ||
377 | mad_fixed64lo_t __lo_; \ | ||
378 | asm __volatile__ ("addc %0, %2, %4\n\t" \ | ||
379 | "addze %1, %3" \ | ||
380 | : "=r" (__lo_), "=r" (__hi_) \ | ||
381 | : "r" (lo), "r" (hi), "r" (1 << (MAD_F_SCALEBITS - 1))); \ | ||
382 | asm __volatile__ ("rlwinm %0, %2,32-%3,0,%3-1\n\t" \ | ||
383 | "rlwimi %0, %1,32-%3,%3,31" \ | ||
384 | : "=&r" (__result) \ | ||
385 | : "r" (__lo_), "r" (__hi_), "I" (MAD_F_SCALEBITS)); \ | ||
386 | __result; \ | ||
387 | }) | ||
388 | # else | ||
389 | # define mad_f_scale64(hi, lo) \ | ||
390 | ({ mad_fixed_t __result; \ | ||
391 | asm ("rlwinm %0, %2,32-%3,0,%3-1\n\t" \ | ||
392 | "rlwimi %0, %1,32-%3,%3,31" \ | ||
393 | : "=r" (__result) \ | ||
394 | : "r" (lo), "r" (hi), "I" (MAD_F_SCALEBITS)); \ | ||
395 | __result; \ | ||
396 | }) | ||
397 | # endif /* OPT_ACCURACY */ | ||
398 | |||
399 | # define MAD_F_SCALEBITS MAD_F_FRACBITS | ||
400 | |||
401 | /* --- Default ------------------------------------------------------------- */ | ||
402 | |||
403 | # elif defined(FPM_DEFAULT) | ||
404 | |||
405 | /* | ||
406 | * This version is the most portable but it loses significant accuracy. | ||
407 | * Furthermore, accuracy is biased against the second argument, so care | ||
408 | * should be taken when ordering operands. | ||
409 | * | ||
410 | * The scale factors are constant as this is not used with SSO. | ||
411 | * | ||
412 | * Pre-rounding is required to stay within the limits of compliance. | ||
413 | */ | ||
414 | # if defined(OPT_SPEED) | ||
415 | # define mad_f_mul(x, y) (((x) >> 12) * ((y) >> 16)) | ||
416 | # else | ||
417 | # define mad_f_mul(x, y) ((((x) + (1L << 11)) >> 12) * \ | ||
418 | (((y) + (1L << 15)) >> 16)) | ||
419 | # endif | ||
420 | |||
421 | /* ------------------------------------------------------------------------- */ | ||
422 | |||
423 | # else | ||
424 | # error "no FPM selected" | ||
425 | # endif | ||
426 | |||
427 | /* default implementations */ | ||
428 | |||
429 | # if !defined(mad_f_mul) | ||
430 | # define mad_f_mul(x, y) \ | ||
431 | ({ mad_fixed64hi_t __hi; \ | ||
432 | mad_fixed64lo_t __lo; \ | ||
433 | MAD_F_MLX(__hi, __lo, (x), (y)); \ | ||
434 | mad_f_scale64(__hi, __lo); \ | ||
435 | }) | ||
436 | # endif | ||
437 | |||
438 | # if !defined(MAD_F_MLA) | ||
439 | # define MAD_F_ML0(hi, lo, x, y) ((lo) = mad_f_mul((x), (y))) | ||
440 | # define MAD_F_MLA(hi, lo, x, y) ((lo) += mad_f_mul((x), (y))) | ||
441 | # define MAD_F_MLN(hi, lo) ((lo) = -(lo)) | ||
442 | # define MAD_F_MLZ(hi, lo) ((void) (hi), (mad_fixed_t) (lo)) | ||
443 | # endif | ||
444 | |||
445 | # if !defined(MAD_F_ML0) | ||
446 | # define MAD_F_ML0(hi, lo, x, y) MAD_F_MLX((hi), (lo), (x), (y)) | ||
447 | # endif | ||
448 | |||
449 | # if !defined(MAD_F_MLN) | ||
450 | # define MAD_F_MLN(hi, lo) ((hi) = ((lo) = -(lo)) ? ~(hi) : -(hi)) | ||
451 | # endif | ||
452 | |||
453 | # if !defined(MAD_F_MLZ) | ||
454 | # define MAD_F_MLZ(hi, lo) mad_f_scale64((hi), (lo)) | ||
455 | # endif | ||
456 | |||
457 | # if !defined(mad_f_scale64) | ||
458 | # if defined(OPT_ACCURACY) | ||
459 | # define mad_f_scale64(hi, lo) \ | ||
460 | ((((mad_fixed_t) \ | ||
461 | (((hi) << (32 - (MAD_F_SCALEBITS - 1))) | \ | ||
462 | ((lo) >> (MAD_F_SCALEBITS - 1)))) + 1) >> 1) | ||
463 | # else | ||
464 | # define mad_f_scale64(hi, lo) \ | ||
465 | ((mad_fixed_t) \ | ||
466 | (((hi) << (32 - MAD_F_SCALEBITS)) | \ | ||
467 | ((lo) >> MAD_F_SCALEBITS))) | ||
468 | # endif | ||
469 | # define MAD_F_SCALEBITS MAD_F_FRACBITS | ||
470 | # endif | ||
471 | |||
472 | /* miscellaneous C routines */ | ||
473 | |||
474 | mad_fixed_t mad_f_abs(mad_fixed_t); | ||
475 | |||
476 | # endif | ||