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Commit | Line | Data |
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158142c2 FB |
1 | /* Native implementation of soft float functions */ |
2 | #include <math.h> | |
38cfa06c | 3 | |
a167ba50 AJ |
4 | #if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) \ |
5 | || defined(CONFIG_SOLARIS) | |
158142c2 | 6 | #include <ieeefp.h> |
38cfa06c | 7 | #define fabsf(f) ((float)fabs(f)) |
158142c2 FB |
8 | #else |
9 | #include <fenv.h> | |
10 | #endif | |
38cfa06c | 11 | |
d07cca02 | 12 | #if defined(__OpenBSD__) || defined(__NetBSD__) |
7c2a9d09 BS |
13 | #include <sys/param.h> |
14 | #endif | |
15 | ||
38cfa06c FB |
16 | /* |
17 | * Define some C99-7.12.3 classification macros and | |
18 | * some C99-.12.4 for Solaris systems OS less than 10, | |
19 | * or Solaris 10 systems running GCC 3.x or less. | |
20 | * Solaris 10 with GCC4 does not need these macros as they | |
21 | * are defined in <iso/math_c99.h> with a compiler directive | |
22 | */ | |
dfe5fff3 JQ |
23 | #if defined(CONFIG_SOLARIS) && \ |
24 | ((CONFIG_SOLARIS_VERSION <= 9 ) || \ | |
be45f068 | 25 | ((CONFIG_SOLARIS_VERSION == 10) && (__GNUC__ < 4))) \ |
7c2a9d09 | 26 | || (defined(__OpenBSD__) && (OpenBSD < 200811)) |
38cfa06c FB |
27 | /* |
28 | * C99 7.12.3 classification macros | |
29 | * and | |
30 | * C99 7.12.14 comparison macros | |
31 | * | |
32 | * ... do not work on Solaris 10 using GNU CC 3.4.x. | |
33 | * Try to workaround the missing / broken C99 math macros. | |
34 | */ | |
128ab2ff BS |
35 | #if defined(__OpenBSD__) |
36 | #define unordered(x, y) (isnan(x) || isnan(y)) | |
37 | #endif | |
38cfa06c | 38 | |
d07cca02 BS |
39 | #ifdef __NetBSD__ |
40 | #ifndef isgreater | |
41 | #define isgreater(x, y) __builtin_isgreater(x, y) | |
42 | #endif | |
43 | #ifndef isgreaterequal | |
44 | #define isgreaterequal(x, y) __builtin_isgreaterequal(x, y) | |
45 | #endif | |
46 | #ifndef isless | |
47 | #define isless(x, y) __builtin_isless(x, y) | |
48 | #endif | |
49 | #ifndef islessequal | |
50 | #define islessequal(x, y) __builtin_islessequal(x, y) | |
51 | #endif | |
52 | #ifndef isunordered | |
53 | #define isunordered(x, y) __builtin_isunordered(x, y) | |
54 | #endif | |
55 | #endif | |
56 | ||
57 | ||
38cfa06c FB |
58 | #define isnormal(x) (fpclass(x) >= FP_NZERO) |
59 | #define isgreater(x, y) ((!unordered(x, y)) && ((x) > (y))) | |
60 | #define isgreaterequal(x, y) ((!unordered(x, y)) && ((x) >= (y))) | |
61 | #define isless(x, y) ((!unordered(x, y)) && ((x) < (y))) | |
62 | #define islessequal(x, y) ((!unordered(x, y)) && ((x) <= (y))) | |
63 | #define isunordered(x,y) unordered(x, y) | |
ec530c81 | 64 | #endif |
158142c2 | 65 | |
75b5a697 | 66 | #if defined(__sun__) && !defined(CONFIG_NEEDS_LIBSUNMATH) |
c94655b0 TS |
67 | |
68 | #ifndef isnan | |
69 | # define isnan(x) \ | |
70 | (sizeof (x) == sizeof (long double) ? isnan_ld (x) \ | |
71 | : sizeof (x) == sizeof (double) ? isnan_d (x) \ | |
72 | : isnan_f (x)) | |
73 | static inline int isnan_f (float x) { return x != x; } | |
74 | static inline int isnan_d (double x) { return x != x; } | |
75 | static inline int isnan_ld (long double x) { return x != x; } | |
76 | #endif | |
77 | ||
78 | #ifndef isinf | |
79 | # define isinf(x) \ | |
80 | (sizeof (x) == sizeof (long double) ? isinf_ld (x) \ | |
81 | : sizeof (x) == sizeof (double) ? isinf_d (x) \ | |
82 | : isinf_f (x)) | |
83 | static inline int isinf_f (float x) { return isnan (x - x); } | |
84 | static inline int isinf_d (double x) { return isnan (x - x); } | |
85 | static inline int isinf_ld (long double x) { return isnan (x - x); } | |
86 | #endif | |
87 | #endif | |
88 | ||
158142c2 FB |
89 | typedef float float32; |
90 | typedef double float64; | |
91 | #ifdef FLOATX80 | |
92 | typedef long double floatx80; | |
93 | #endif | |
94 | ||
95 | typedef union { | |
96 | float32 f; | |
97 | uint32_t i; | |
98 | } float32u; | |
99 | typedef union { | |
100 | float64 f; | |
101 | uint64_t i; | |
102 | } float64u; | |
103 | #ifdef FLOATX80 | |
104 | typedef union { | |
105 | floatx80 f; | |
106 | struct { | |
107 | uint64_t low; | |
108 | uint16_t high; | |
109 | } i; | |
110 | } floatx80u; | |
111 | #endif | |
112 | ||
113 | /*---------------------------------------------------------------------------- | |
114 | | Software IEC/IEEE floating-point rounding mode. | |
115 | *----------------------------------------------------------------------------*/ | |
a167ba50 AJ |
116 | #if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) \ |
117 | || defined(CONFIG_SOLARIS) | |
128ab2ff BS |
118 | #if defined(__OpenBSD__) |
119 | #define FE_RM FP_RM | |
120 | #define FE_RP FP_RP | |
121 | #define FE_RZ FP_RZ | |
122 | #endif | |
158142c2 FB |
123 | enum { |
124 | float_round_nearest_even = FP_RN, | |
7918bf47 PB |
125 | float_round_down = FP_RM, |
126 | float_round_up = FP_RP, | |
127 | float_round_to_zero = FP_RZ | |
158142c2 FB |
128 | }; |
129 | #elif defined(__arm__) | |
130 | enum { | |
131 | float_round_nearest_even = 0, | |
132 | float_round_down = 1, | |
133 | float_round_up = 2, | |
134 | float_round_to_zero = 3 | |
135 | }; | |
136 | #else | |
137 | enum { | |
138 | float_round_nearest_even = FE_TONEAREST, | |
139 | float_round_down = FE_DOWNWARD, | |
140 | float_round_up = FE_UPWARD, | |
141 | float_round_to_zero = FE_TOWARDZERO | |
142 | }; | |
143 | #endif | |
144 | ||
145 | typedef struct float_status { | |
e872aa81 | 146 | int float_rounding_mode; |
158142c2 | 147 | #ifdef FLOATX80 |
e872aa81 | 148 | int floatx80_rounding_precision; |
158142c2 FB |
149 | #endif |
150 | } float_status; | |
151 | ||
152 | void set_float_rounding_mode(int val STATUS_PARAM); | |
153 | #ifdef FLOATX80 | |
154 | void set_floatx80_rounding_precision(int val STATUS_PARAM); | |
155 | #endif | |
156 | ||
157 | /*---------------------------------------------------------------------------- | |
158 | | Software IEC/IEEE integer-to-floating-point conversion routines. | |
159 | *----------------------------------------------------------------------------*/ | |
160 | float32 int32_to_float32( int STATUS_PARAM); | |
75d62a58 | 161 | float32 uint32_to_float32( unsigned int STATUS_PARAM); |
158142c2 | 162 | float64 int32_to_float64( int STATUS_PARAM); |
75d62a58 | 163 | float64 uint32_to_float64( unsigned int STATUS_PARAM); |
158142c2 FB |
164 | #ifdef FLOATX80 |
165 | floatx80 int32_to_floatx80( int STATUS_PARAM); | |
166 | #endif | |
167 | #ifdef FLOAT128 | |
168 | float128 int32_to_float128( int STATUS_PARAM); | |
169 | #endif | |
170 | float32 int64_to_float32( int64_t STATUS_PARAM); | |
75d62a58 | 171 | float32 uint64_to_float32( uint64_t STATUS_PARAM); |
158142c2 | 172 | float64 int64_to_float64( int64_t STATUS_PARAM); |
75d62a58 | 173 | float64 uint64_to_float64( uint64_t v STATUS_PARAM); |
158142c2 FB |
174 | #ifdef FLOATX80 |
175 | floatx80 int64_to_floatx80( int64_t STATUS_PARAM); | |
176 | #endif | |
177 | #ifdef FLOAT128 | |
178 | float128 int64_to_float128( int64_t STATUS_PARAM); | |
179 | #endif | |
180 | ||
181 | /*---------------------------------------------------------------------------- | |
182 | | Software IEC/IEEE single-precision conversion routines. | |
183 | *----------------------------------------------------------------------------*/ | |
184 | int float32_to_int32( float32 STATUS_PARAM); | |
185 | int float32_to_int32_round_to_zero( float32 STATUS_PARAM); | |
75d62a58 JM |
186 | unsigned int float32_to_uint32( float32 a STATUS_PARAM); |
187 | unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM); | |
158142c2 FB |
188 | int64_t float32_to_int64( float32 STATUS_PARAM); |
189 | int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM); | |
190 | float64 float32_to_float64( float32 STATUS_PARAM); | |
191 | #ifdef FLOATX80 | |
192 | floatx80 float32_to_floatx80( float32 STATUS_PARAM); | |
193 | #endif | |
194 | #ifdef FLOAT128 | |
195 | float128 float32_to_float128( float32 STATUS_PARAM); | |
196 | #endif | |
197 | ||
198 | /*---------------------------------------------------------------------------- | |
199 | | Software IEC/IEEE single-precision operations. | |
200 | *----------------------------------------------------------------------------*/ | |
201 | float32 float32_round_to_int( float32 STATUS_PARAM); | |
202 | INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM) | |
203 | { | |
204 | return a + b; | |
205 | } | |
206 | INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM) | |
207 | { | |
208 | return a - b; | |
209 | } | |
210 | INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM) | |
211 | { | |
212 | return a * b; | |
213 | } | |
214 | INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM) | |
215 | { | |
216 | return a / b; | |
217 | } | |
218 | float32 float32_rem( float32, float32 STATUS_PARAM); | |
219 | float32 float32_sqrt( float32 STATUS_PARAM); | |
750afe93 | 220 | INLINE int float32_eq( float32 a, float32 b STATUS_PARAM) |
158142c2 | 221 | { |
158142c2 FB |
222 | return a == b; |
223 | } | |
750afe93 | 224 | INLINE int float32_le( float32 a, float32 b STATUS_PARAM) |
158142c2 FB |
225 | { |
226 | return a <= b; | |
227 | } | |
750afe93 | 228 | INLINE int float32_lt( float32 a, float32 b STATUS_PARAM) |
158142c2 FB |
229 | { |
230 | return a < b; | |
231 | } | |
750afe93 | 232 | INLINE int float32_eq_signaling( float32 a, float32 b STATUS_PARAM) |
158142c2 | 233 | { |
b109f9f8 | 234 | return a <= b && a >= b; |
158142c2 | 235 | } |
750afe93 | 236 | INLINE int float32_le_quiet( float32 a, float32 b STATUS_PARAM) |
158142c2 FB |
237 | { |
238 | return islessequal(a, b); | |
239 | } | |
750afe93 | 240 | INLINE int float32_lt_quiet( float32 a, float32 b STATUS_PARAM) |
158142c2 FB |
241 | { |
242 | return isless(a, b); | |
243 | } | |
750afe93 | 244 | INLINE int float32_unordered( float32 a, float32 b STATUS_PARAM) |
b109f9f8 FB |
245 | { |
246 | return isunordered(a, b); | |
247 | ||
248 | } | |
750afe93 FB |
249 | int float32_compare( float32, float32 STATUS_PARAM ); |
250 | int float32_compare_quiet( float32, float32 STATUS_PARAM ); | |
251 | int float32_is_signaling_nan( float32 ); | |
629bd74a | 252 | int float32_is_nan( float32 ); |
158142c2 FB |
253 | |
254 | INLINE float32 float32_abs(float32 a) | |
255 | { | |
256 | return fabsf(a); | |
257 | } | |
258 | ||
259 | INLINE float32 float32_chs(float32 a) | |
260 | { | |
261 | return -a; | |
262 | } | |
263 | ||
c52ab6f5 AJ |
264 | INLINE float32 float32_is_infinity(float32 a) |
265 | { | |
266 | return fpclassify(a) == FP_INFINITE; | |
267 | } | |
268 | ||
269 | INLINE float32 float32_is_neg(float32 a) | |
270 | { | |
8d6c92b6 AJ |
271 | float32u u; |
272 | u.f = a; | |
273 | return u.i >> 31; | |
c52ab6f5 AJ |
274 | } |
275 | ||
276 | INLINE float32 float32_is_zero(float32 a) | |
277 | { | |
278 | return fpclassify(a) == FP_ZERO; | |
279 | } | |
280 | ||
9ee6e8bb PB |
281 | INLINE float32 float32_scalbn(float32 a, int n) |
282 | { | |
283 | return scalbnf(a, n); | |
284 | } | |
285 | ||
158142c2 FB |
286 | /*---------------------------------------------------------------------------- |
287 | | Software IEC/IEEE double-precision conversion routines. | |
288 | *----------------------------------------------------------------------------*/ | |
289 | int float64_to_int32( float64 STATUS_PARAM ); | |
290 | int float64_to_int32_round_to_zero( float64 STATUS_PARAM ); | |
75d62a58 JM |
291 | unsigned int float64_to_uint32( float64 STATUS_PARAM ); |
292 | unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); | |
158142c2 FB |
293 | int64_t float64_to_int64( float64 STATUS_PARAM ); |
294 | int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM ); | |
75d62a58 JM |
295 | uint64_t float64_to_uint64( float64 STATUS_PARAM ); |
296 | uint64_t float64_to_uint64_round_to_zero( float64 STATUS_PARAM ); | |
158142c2 FB |
297 | float32 float64_to_float32( float64 STATUS_PARAM ); |
298 | #ifdef FLOATX80 | |
299 | floatx80 float64_to_floatx80( float64 STATUS_PARAM ); | |
300 | #endif | |
301 | #ifdef FLOAT128 | |
302 | float128 float64_to_float128( float64 STATUS_PARAM ); | |
303 | #endif | |
304 | ||
305 | /*---------------------------------------------------------------------------- | |
306 | | Software IEC/IEEE double-precision operations. | |
307 | *----------------------------------------------------------------------------*/ | |
308 | float64 float64_round_to_int( float64 STATUS_PARAM ); | |
e6e5906b | 309 | float64 float64_trunc_to_int( float64 STATUS_PARAM ); |
158142c2 FB |
310 | INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM) |
311 | { | |
312 | return a + b; | |
313 | } | |
314 | INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM) | |
315 | { | |
316 | return a - b; | |
317 | } | |
318 | INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM) | |
319 | { | |
320 | return a * b; | |
321 | } | |
322 | INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM) | |
323 | { | |
324 | return a / b; | |
325 | } | |
326 | float64 float64_rem( float64, float64 STATUS_PARAM ); | |
327 | float64 float64_sqrt( float64 STATUS_PARAM ); | |
750afe93 | 328 | INLINE int float64_eq( float64 a, float64 b STATUS_PARAM) |
158142c2 FB |
329 | { |
330 | return a == b; | |
331 | } | |
750afe93 | 332 | INLINE int float64_le( float64 a, float64 b STATUS_PARAM) |
158142c2 FB |
333 | { |
334 | return a <= b; | |
335 | } | |
750afe93 | 336 | INLINE int float64_lt( float64 a, float64 b STATUS_PARAM) |
158142c2 FB |
337 | { |
338 | return a < b; | |
339 | } | |
750afe93 | 340 | INLINE int float64_eq_signaling( float64 a, float64 b STATUS_PARAM) |
158142c2 | 341 | { |
b109f9f8 | 342 | return a <= b && a >= b; |
158142c2 | 343 | } |
750afe93 | 344 | INLINE int float64_le_quiet( float64 a, float64 b STATUS_PARAM) |
158142c2 FB |
345 | { |
346 | return islessequal(a, b); | |
347 | } | |
750afe93 | 348 | INLINE int float64_lt_quiet( float64 a, float64 b STATUS_PARAM) |
158142c2 FB |
349 | { |
350 | return isless(a, b); | |
351 | ||
352 | } | |
750afe93 | 353 | INLINE int float64_unordered( float64 a, float64 b STATUS_PARAM) |
b109f9f8 FB |
354 | { |
355 | return isunordered(a, b); | |
356 | ||
357 | } | |
750afe93 FB |
358 | int float64_compare( float64, float64 STATUS_PARAM ); |
359 | int float64_compare_quiet( float64, float64 STATUS_PARAM ); | |
360 | int float64_is_signaling_nan( float64 ); | |
361 | int float64_is_nan( float64 ); | |
158142c2 FB |
362 | |
363 | INLINE float64 float64_abs(float64 a) | |
364 | { | |
365 | return fabs(a); | |
366 | } | |
367 | ||
368 | INLINE float64 float64_chs(float64 a) | |
369 | { | |
370 | return -a; | |
371 | } | |
372 | ||
c52ab6f5 AJ |
373 | INLINE float64 float64_is_infinity(float64 a) |
374 | { | |
375 | return fpclassify(a) == FP_INFINITE; | |
376 | } | |
377 | ||
378 | INLINE float64 float64_is_neg(float64 a) | |
379 | { | |
8d6c92b6 AJ |
380 | float64u u; |
381 | u.f = a; | |
382 | return u.i >> 63; | |
c52ab6f5 AJ |
383 | } |
384 | ||
385 | INLINE float64 float64_is_zero(float64 a) | |
386 | { | |
387 | return fpclassify(a) == FP_ZERO; | |
388 | } | |
389 | ||
9ee6e8bb PB |
390 | INLINE float64 float64_scalbn(float64 a, int n) |
391 | { | |
392 | return scalbn(a, n); | |
393 | } | |
394 | ||
158142c2 FB |
395 | #ifdef FLOATX80 |
396 | ||
397 | /*---------------------------------------------------------------------------- | |
398 | | Software IEC/IEEE extended double-precision conversion routines. | |
399 | *----------------------------------------------------------------------------*/ | |
400 | int floatx80_to_int32( floatx80 STATUS_PARAM ); | |
401 | int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); | |
402 | int64_t floatx80_to_int64( floatx80 STATUS_PARAM); | |
403 | int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM); | |
404 | float32 floatx80_to_float32( floatx80 STATUS_PARAM ); | |
405 | float64 floatx80_to_float64( floatx80 STATUS_PARAM ); | |
406 | #ifdef FLOAT128 | |
407 | float128 floatx80_to_float128( floatx80 STATUS_PARAM ); | |
408 | #endif | |
409 | ||
410 | /*---------------------------------------------------------------------------- | |
411 | | Software IEC/IEEE extended double-precision operations. | |
412 | *----------------------------------------------------------------------------*/ | |
413 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); | |
414 | INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM) | |
415 | { | |
416 | return a + b; | |
417 | } | |
418 | INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM) | |
419 | { | |
420 | return a - b; | |
421 | } | |
422 | INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM) | |
423 | { | |
424 | return a * b; | |
425 | } | |
426 | INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM) | |
427 | { | |
428 | return a / b; | |
429 | } | |
430 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); | |
431 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); | |
750afe93 | 432 | INLINE int floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM) |
158142c2 FB |
433 | { |
434 | return a == b; | |
435 | } | |
750afe93 | 436 | INLINE int floatx80_le( floatx80 a, floatx80 b STATUS_PARAM) |
158142c2 FB |
437 | { |
438 | return a <= b; | |
439 | } | |
750afe93 | 440 | INLINE int floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM) |
158142c2 FB |
441 | { |
442 | return a < b; | |
443 | } | |
750afe93 | 444 | INLINE int floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM) |
158142c2 | 445 | { |
b109f9f8 | 446 | return a <= b && a >= b; |
158142c2 | 447 | } |
750afe93 | 448 | INLINE int floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM) |
158142c2 FB |
449 | { |
450 | return islessequal(a, b); | |
451 | } | |
750afe93 | 452 | INLINE int floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM) |
158142c2 FB |
453 | { |
454 | return isless(a, b); | |
455 | ||
456 | } | |
750afe93 | 457 | INLINE int floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM) |
b109f9f8 FB |
458 | { |
459 | return isunordered(a, b); | |
460 | ||
461 | } | |
750afe93 FB |
462 | int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); |
463 | int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); | |
464 | int floatx80_is_signaling_nan( floatx80 ); | |
1b2ad2ec | 465 | int floatx80_is_nan( floatx80 ); |
158142c2 FB |
466 | |
467 | INLINE floatx80 floatx80_abs(floatx80 a) | |
468 | { | |
469 | return fabsl(a); | |
470 | } | |
471 | ||
472 | INLINE floatx80 floatx80_chs(floatx80 a) | |
473 | { | |
474 | return -a; | |
475 | } | |
9ee6e8bb | 476 | |
c52ab6f5 AJ |
477 | INLINE floatx80 floatx80_is_infinity(floatx80 a) |
478 | { | |
479 | return fpclassify(a) == FP_INFINITE; | |
480 | } | |
481 | ||
482 | INLINE floatx80 floatx80_is_neg(floatx80 a) | |
483 | { | |
8d6c92b6 AJ |
484 | floatx80u u; |
485 | u.f = a; | |
486 | return u.i.high >> 15; | |
c52ab6f5 AJ |
487 | } |
488 | ||
489 | INLINE floatx80 floatx80_is_zero(floatx80 a) | |
490 | { | |
491 | return fpclassify(a) == FP_ZERO; | |
492 | } | |
493 | ||
9ee6e8bb PB |
494 | INLINE floatx80 floatx80_scalbn(floatx80 a, int n) |
495 | { | |
496 | return scalbnl(a, n); | |
497 | } | |
498 | ||
158142c2 | 499 | #endif |