Commit | Line | Data |
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ff4ec49e FB |
1 | /* |
2 | * DSP utils | |
3 | * Copyright (c) 2000, 2001, 2002 Fabrice Bellard. | |
4 | * | |
5 | * This library is free software; you can redistribute it and/or | |
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 of the License, or (at your option) any later version. | |
9 | * | |
10 | * This 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 | |
13 | * Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public | |
16 | * License along with this library; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
24641185 MN |
19 | |
20 | /** | |
21 | * @file dsputil.h | |
983e3246 | 22 | * DSP utils. |
24641185 MN |
23 | */ |
24 | ||
de6d9b64 FB |
25 | #ifndef DSPUTIL_H |
26 | #define DSPUTIL_H | |
27 | ||
28 | #include "common.h" | |
43f1708f | 29 | #include "avcodec.h" |
de6d9b64 | 30 | |
24641185 | 31 | |
44eb4951 | 32 | //#define DEBUG |
de6d9b64 FB |
33 | /* dct code */ |
34 | typedef short DCTELEM; | |
0e15384d | 35 | //typedef int DCTELEM; |
de6d9b64 | 36 | |
03c94ede | 37 | void fdct_ifast (DCTELEM *data); |
28db7fce | 38 | void ff_jpeg_fdct_islow (DCTELEM *data); |
de6d9b64 FB |
39 | |
40 | void j_rev_dct (DCTELEM *data); | |
41 | ||
3f09f52a | 42 | void ff_fdct_mmx(DCTELEM *block); |
de6d9b64 | 43 | |
e0eac44e | 44 | /* encoding scans */ |
0c1a9eda ZK |
45 | extern const uint8_t ff_alternate_horizontal_scan[64]; |
46 | extern const uint8_t ff_alternate_vertical_scan[64]; | |
47 | extern const uint8_t ff_zigzag_direct[64]; | |
5a240838 | 48 | |
de6d9b64 FB |
49 | /* pixel operations */ |
50 | #define MAX_NEG_CROP 384 | |
51 | ||
52 | /* temporary */ | |
0c1a9eda ZK |
53 | extern uint32_t squareTbl[512]; |
54 | extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP]; | |
de6d9b64 | 55 | |
de6d9b64 | 56 | |
b7c27ee6 | 57 | /* minimum alignment rules ;) |
eb4b3dd3 | 58 | if u notice errors in the align stuff, need more alignment for some asm code for some cpu |
b7c27ee6 MN |
59 | or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ... |
60 | ||
61 | !warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible) | |
62 | i (michael) didnt check them, these are just the alignents which i think could be reached easily ... | |
de6d9b64 | 63 | |
b7c27ee6 MN |
64 | !future video codecs might need functions with less strict alignment |
65 | */ | |
66 | ||
eb4b3dd3 | 67 | /* |
0c1a9eda ZK |
68 | void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size); |
69 | void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride); | |
70 | void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size); | |
71 | void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size); | |
649c00c9 | 72 | void clear_blocks_c(DCTELEM *blocks); |
eb4b3dd3 | 73 | */ |
de6d9b64 FB |
74 | |
75 | /* add and put pixel (decoding) */ | |
b7c27ee6 | 76 | // blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16 |
0c1a9eda ZK |
77 | typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h); |
78 | typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride); | |
b3184779 | 79 | |
db794953 | 80 | #define DEF_OLD_QPEL(name)\ |
0c1a9eda ZK |
81 | void ff_put_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\ |
82 | void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\ | |
83 | void ff_avg_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride); | |
db794953 MN |
84 | |
85 | DEF_OLD_QPEL(qpel16_mc11_old_c) | |
86 | DEF_OLD_QPEL(qpel16_mc31_old_c) | |
87 | DEF_OLD_QPEL(qpel16_mc12_old_c) | |
88 | DEF_OLD_QPEL(qpel16_mc32_old_c) | |
89 | DEF_OLD_QPEL(qpel16_mc13_old_c) | |
90 | DEF_OLD_QPEL(qpel16_mc33_old_c) | |
91 | DEF_OLD_QPEL(qpel8_mc11_old_c) | |
92 | DEF_OLD_QPEL(qpel8_mc31_old_c) | |
93 | DEF_OLD_QPEL(qpel8_mc12_old_c) | |
94 | DEF_OLD_QPEL(qpel8_mc32_old_c) | |
95 | DEF_OLD_QPEL(qpel8_mc13_old_c) | |
96 | DEF_OLD_QPEL(qpel8_mc33_old_c) | |
b3184779 MN |
97 | |
98 | #define CALL_2X_PIXELS(a, b, n)\ | |
99 | static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\ | |
100 | b(block , pixels , line_size, h);\ | |
101 | b(block+n, pixels+n, line_size, h);\ | |
102 | } | |
44eb4951 | 103 | |
de6d9b64 FB |
104 | /* motion estimation */ |
105 | ||
0c1a9eda | 106 | typedef int (*op_pixels_abs_func)(uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/; |
1457ab52 | 107 | |
0c1a9eda | 108 | typedef int (*me_cmp_func)(void /*MpegEncContext*/ *s, uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/; |
1457ab52 | 109 | |
24641185 MN |
110 | /** |
111 | * DSPContext. | |
112 | */ | |
eb4b3dd3 ZK |
113 | typedef struct DSPContext { |
114 | /* pixel ops : interface with DCT */ | |
0c1a9eda ZK |
115 | void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size); |
116 | void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride); | |
117 | void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size); | |
118 | void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size); | |
d518aebd MN |
119 | /** |
120 | * translational global motion compensation. | |
121 | */ | |
0c1a9eda | 122 | void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder); |
d518aebd MN |
123 | /** |
124 | * global motion compensation. | |
125 | */ | |
0c1a9eda | 126 | void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy, |
eb4b3dd3 ZK |
127 | int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height); |
128 | void (*clear_blocks)(DCTELEM *blocks/*align 16*/); | |
0c1a9eda ZK |
129 | int (*pix_sum)(uint8_t * pix, int line_size); |
130 | int (*pix_norm1)(uint8_t * pix, int line_size); | |
1457ab52 MN |
131 | me_cmp_func sad[2]; /* identical to pix_absAxA except additional void * */ |
132 | me_cmp_func sse[2]; | |
133 | me_cmp_func hadamard8_diff[2]; | |
134 | me_cmp_func dct_sad[2]; | |
135 | me_cmp_func quant_psnr[2]; | |
3a87ac94 MN |
136 | me_cmp_func bit[2]; |
137 | me_cmp_func rd[2]; | |
1457ab52 MN |
138 | int (*hadamard8_abs )(uint8_t *src, int stride, int mean); |
139 | ||
826f429a | 140 | me_cmp_func me_pre_cmp[11]; |
1457ab52 MN |
141 | me_cmp_func me_cmp[11]; |
142 | me_cmp_func me_sub_cmp[11]; | |
143 | me_cmp_func mb_cmp[11]; | |
eb4b3dd3 ZK |
144 | |
145 | /* maybe create an array for 16/8 functions */ | |
d518aebd MN |
146 | /** |
147 | * Halfpel motion compensation with rounding (a+b+1)>>1. | |
148 | * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ] | |
149 | * @param block destination where the result is stored | |
150 | * @param pixels source | |
151 | * @param line_size number of bytes in a horizontal line of block | |
152 | * @param h height | |
153 | */ | |
eb4b3dd3 | 154 | op_pixels_func put_pixels_tab[2][4]; |
d518aebd MN |
155 | |
156 | /** | |
157 | * Halfpel motion compensation with rounding (a+b+1)>>1. | |
158 | * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ] | |
159 | * @param block destination into which the result is averaged (a+b+1)>>1 | |
160 | * @param pixels source | |
161 | * @param line_size number of bytes in a horizontal line of block | |
162 | * @param h height | |
163 | */ | |
eb4b3dd3 | 164 | op_pixels_func avg_pixels_tab[2][4]; |
d518aebd MN |
165 | |
166 | /** | |
167 | * Halfpel motion compensation with no rounding (a+b)>>1. | |
168 | * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ] | |
169 | * @param block destination where the result is stored | |
170 | * @param pixels source | |
171 | * @param line_size number of bytes in a horizontal line of block | |
172 | * @param h height | |
173 | */ | |
eb4b3dd3 | 174 | op_pixels_func put_no_rnd_pixels_tab[2][4]; |
d518aebd MN |
175 | |
176 | /** | |
177 | * Halfpel motion compensation with no rounding (a+b)>>1. | |
178 | * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ] | |
179 | * @param block destination into which the result is averaged (a+b)>>1 | |
180 | * @param pixels source | |
181 | * @param line_size number of bytes in a horizontal line of block | |
182 | * @param h height | |
183 | */ | |
eb4b3dd3 ZK |
184 | op_pixels_func avg_no_rnd_pixels_tab[2][4]; |
185 | qpel_mc_func put_qpel_pixels_tab[2][16]; | |
186 | qpel_mc_func avg_qpel_pixels_tab[2][16]; | |
187 | qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16]; | |
188 | qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16]; | |
1457ab52 | 189 | qpel_mc_func put_mspel_pixels_tab[8]; |
eb4b3dd3 ZK |
190 | |
191 | op_pixels_abs_func pix_abs16x16; | |
192 | op_pixels_abs_func pix_abs16x16_x2; | |
193 | op_pixels_abs_func pix_abs16x16_y2; | |
194 | op_pixels_abs_func pix_abs16x16_xy2; | |
195 | op_pixels_abs_func pix_abs8x8; | |
196 | op_pixels_abs_func pix_abs8x8_x2; | |
197 | op_pixels_abs_func pix_abs8x8_y2; | |
198 | op_pixels_abs_func pix_abs8x8_xy2; | |
11f18faf MN |
199 | |
200 | /* huffyuv specific */ | |
11f18faf | 201 | void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w); |
1457ab52 | 202 | void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w); |
b0368839 MN |
203 | |
204 | /* (I)DCT */ | |
205 | void (*fdct)(DCTELEM *block/* align 16*/); | |
24641185 MN |
206 | |
207 | /** | |
77c92c2d | 208 | * block -> idct -> clip to unsigned 8 bit -> dest. |
24641185 | 209 | * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...) |
a1adf436 | 210 | * @param line_size size in bytes of a horizotal line of dest |
24641185 | 211 | */ |
b0368839 | 212 | void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/); |
24641185 MN |
213 | |
214 | /** | |
215 | * block -> idct -> add dest -> clip to unsigned 8 bit -> dest. | |
a1adf436 | 216 | * @param line_size size in bytes of a horizotal line of dest |
24641185 | 217 | */ |
b0368839 | 218 | void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/); |
24641185 MN |
219 | |
220 | /** | |
77c92c2d | 221 | * idct input permutation. |
24641185 MN |
222 | * an example to avoid confusion: |
223 | * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...) | |
224 | * - (x -> referece dct -> reference idct -> x) | |
225 | * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x) | |
226 | * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...) | |
227 | */ | |
b0368839 MN |
228 | uint8_t idct_permutation[64]; |
229 | int idct_permutation_type; | |
230 | #define FF_NO_IDCT_PERM 1 | |
231 | #define FF_LIBMPEG2_IDCT_PERM 2 | |
232 | #define FF_SIMPLE_IDCT_PERM 3 | |
233 | #define FF_TRANSPOSE_IDCT_PERM 4 | |
234 | ||
eb4b3dd3 ZK |
235 | } DSPContext; |
236 | ||
b0368839 | 237 | void dsputil_init(DSPContext* p, AVCodecContext *avctx); |
de6d9b64 | 238 | |
7801d21d MN |
239 | /** |
240 | * permute block according to permuatation. | |
241 | * @param last last non zero element in scantable order | |
242 | */ | |
0c1a9eda | 243 | void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last); |
e0eac44e | 244 | |
24641185 | 245 | /** |
77c92c2d | 246 | * Empty mmx state. |
24641185 MN |
247 | * this must be called between any dsp function and float/double code. |
248 | * for example sin(); dsp->idct_put(); emms_c(); cos() | |
249 | */ | |
eb4b3dd3 ZK |
250 | #define emms_c() |
251 | ||
e629ab68 RD |
252 | /* should be defined by architectures supporting |
253 | one or more MultiMedia extension */ | |
254 | int mm_support(void); | |
255 | ||
3d03c0a2 | 256 | #if defined(HAVE_MMX) |
de6d9b64 | 257 | |
18f77016 | 258 | #undef emms_c |
eb4b3dd3 | 259 | |
de6d9b64 FB |
260 | #define MM_MMX 0x0001 /* standard MMX */ |
261 | #define MM_3DNOW 0x0004 /* AMD 3DNOW */ | |
262 | #define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */ | |
263 | #define MM_SSE 0x0008 /* SSE functions */ | |
264 | #define MM_SSE2 0x0010 /* PIV SSE2 functions */ | |
265 | ||
266 | extern int mm_flags; | |
267 | ||
0c1a9eda ZK |
268 | void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size); |
269 | void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size); | |
de6d9b64 FB |
270 | |
271 | static inline void emms(void) | |
272 | { | |
fb16b7e7 FB |
273 | __asm __volatile ("emms;":::"memory"); |
274 | } | |
275 | ||
1457ab52 | 276 | |
fb16b7e7 FB |
277 | #define emms_c() \ |
278 | {\ | |
279 | if (mm_flags & MM_MMX)\ | |
280 | emms();\ | |
de6d9b64 FB |
281 | } |
282 | ||
283 | #define __align8 __attribute__ ((aligned (8))) | |
284 | ||
b0368839 MN |
285 | void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx); |
286 | void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx); | |
2720569a | 287 | |
3d03c0a2 FB |
288 | #elif defined(ARCH_ARMV4L) |
289 | ||
3d03c0a2 FB |
290 | /* This is to use 4 bytes read to the IDCT pointers for some 'zero' |
291 | line ptimizations */ | |
292 | #define __align8 __attribute__ ((aligned (4))) | |
293 | ||
b0368839 | 294 | void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx); |
3d03c0a2 | 295 | |
c34270f5 | 296 | #elif defined(HAVE_MLIB) |
c34270f5 FB |
297 | |
298 | /* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */ | |
299 | #define __align8 __attribute__ ((aligned (8))) | |
300 | ||
b0368839 | 301 | void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx); |
c34270f5 | 302 | |
1e98dffb NK |
303 | #elif defined(ARCH_ALPHA) |
304 | ||
1e98dffb NK |
305 | #define __align8 __attribute__ ((aligned (8))) |
306 | ||
b0368839 | 307 | void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx); |
1e98dffb | 308 | |
59925ef2 BF |
309 | #elif defined(ARCH_POWERPC) |
310 | ||
404d2241 BF |
311 | #define MM_ALTIVEC 0x0001 /* standard AltiVec */ |
312 | ||
313 | extern int mm_flags; | |
314 | ||
3b991c54 RD |
315 | #if defined(HAVE_ALTIVEC) && !defined(CONFIG_DARWIN) |
316 | #include <altivec.h> | |
317 | #endif | |
318 | ||
59925ef2 BF |
319 | #define __align8 __attribute__ ((aligned (16))) |
320 | ||
b0368839 | 321 | void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx); |
59925ef2 | 322 | |
d46aba26 LS |
323 | #elif defined(HAVE_MMI) |
324 | ||
d46aba26 LS |
325 | #define __align8 __attribute__ ((aligned (16))) |
326 | ||
b0368839 | 327 | void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx); |
d46aba26 | 328 | |
de6d9b64 FB |
329 | #else |
330 | ||
331 | #define __align8 | |
332 | ||
333 | #endif | |
334 | ||
6d4985bb FB |
335 | #ifdef __GNUC__ |
336 | ||
337 | struct unaligned_64 { uint64_t l; } __attribute__((packed)); | |
338 | struct unaligned_32 { uint32_t l; } __attribute__((packed)); | |
339 | ||
340 | #define LD32(a) (((const struct unaligned_32 *) (a))->l) | |
341 | #define LD64(a) (((const struct unaligned_64 *) (a))->l) | |
342 | ||
343 | #define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b) | |
344 | ||
345 | #else /* __GNUC__ */ | |
346 | ||
347 | #define LD32(a) (*((uint32_t*)(a))) | |
348 | #define LD64(a) (*((uint64_t*)(a))) | |
349 | ||
350 | #define ST32(a, b) *((uint32_t*)(a)) = (b) | |
351 | ||
352 | #endif /* !__GNUC__ */ | |
353 | ||
43f1708f | 354 | /* PSNR */ |
0c1a9eda | 355 | void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3], |
43f1708f J |
356 | int orig_linesize[3], int coded_linesize, |
357 | AVCodecContext *avctx); | |
bb6f5690 FB |
358 | |
359 | /* FFT computation */ | |
360 | ||
361 | /* NOTE: soon integer code will be added, so you must use the | |
362 | FFTSample type */ | |
363 | typedef float FFTSample; | |
364 | ||
365 | typedef struct FFTComplex { | |
366 | FFTSample re, im; | |
367 | } FFTComplex; | |
368 | ||
369 | typedef struct FFTContext { | |
370 | int nbits; | |
371 | int inverse; | |
372 | uint16_t *revtab; | |
373 | FFTComplex *exptab; | |
374 | FFTComplex *exptab1; /* only used by SSE code */ | |
375 | void (*fft_calc)(struct FFTContext *s, FFTComplex *z); | |
376 | } FFTContext; | |
377 | ||
378 | int fft_init(FFTContext *s, int nbits, int inverse); | |
379 | void fft_permute(FFTContext *s, FFTComplex *z); | |
380 | void fft_calc_c(FFTContext *s, FFTComplex *z); | |
381 | void fft_calc_sse(FFTContext *s, FFTComplex *z); | |
8d268a7d FB |
382 | void fft_calc_altivec(FFTContext *s, FFTComplex *z); |
383 | ||
bb6f5690 FB |
384 | static inline void fft_calc(FFTContext *s, FFTComplex *z) |
385 | { | |
386 | s->fft_calc(s, z); | |
387 | } | |
388 | void fft_end(FFTContext *s); | |
389 | ||
390 | /* MDCT computation */ | |
391 | ||
392 | typedef struct MDCTContext { | |
393 | int n; /* size of MDCT (i.e. number of input data * 2) */ | |
394 | int nbits; /* n = 2^nbits */ | |
395 | /* pre/post rotation tables */ | |
396 | FFTSample *tcos; | |
397 | FFTSample *tsin; | |
398 | FFTContext fft; | |
399 | } MDCTContext; | |
400 | ||
82696bee | 401 | int ff_mdct_init(MDCTContext *s, int nbits, int inverse); |
eb4b3dd3 | 402 | void ff_imdct_calc(MDCTContext *s, FFTSample *output, |
bb6f5690 | 403 | const FFTSample *input, FFTSample *tmp); |
eb4b3dd3 | 404 | void ff_mdct_calc(MDCTContext *s, FFTSample *out, |
bb6f5690 | 405 | const FFTSample *input, FFTSample *tmp); |
82696bee | 406 | void ff_mdct_end(MDCTContext *s); |
bb6f5690 | 407 | |
1457ab52 MN |
408 | #define WARPER88_1616(name8, name16)\ |
409 | static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride){\ | |
410 | return name8(s, dst , src , stride)\ | |
411 | +name8(s, dst+8 , src+8 , stride)\ | |
412 | +name8(s, dst +8*stride, src +8*stride, stride)\ | |
413 | +name8(s, dst+8+8*stride, src+8+8*stride, stride);\ | |
414 | } | |
415 | ||
95e2ce4a | 416 | #ifndef HAVE_LRINTF |
9d85cbd9 FB |
417 | /* XXX: add ISOC specific test to avoid specific BSD testing. */ |
418 | /* better than nothing implementation. */ | |
6234d753 | 419 | /* btw, rintf() is existing on fbsd too -- alex */ |
9d85cbd9 FB |
420 | static inline long int lrintf(float x) |
421 | { | |
ea937d01 FB |
422 | #ifdef CONFIG_WIN32 |
423 | /* XXX: incorrect, but make it compile */ | |
424 | return (int)(x); | |
425 | #else | |
9d85cbd9 | 426 | return (int)(rint(x)); |
ea937d01 | 427 | #endif |
9d85cbd9 FB |
428 | } |
429 | #endif | |
430 | ||
de6d9b64 | 431 | #endif |