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source: vbox/trunk/src/recompiler/fpu/softfloat-native.h@ 37677

Last change on this file since 37677 was 37677, checked in by vboxsync, 13 years ago

solaris build fix.
  • Property svn:eol-style set to native
File size: 13.6 KB
Line 
1/* Native implementation of soft float functions */
2#define __C99FEATURES__
3#include <math.h>
4
5#if (defined(_BSD) && !defined(__APPLE__) && !defined(__FreeBSD__)) || defined(CONFIG_SOLARIS) /* VBox: Added __FreeBSD__ */
6#include <ieeefp.h>
7#define fabsf(f) ((float)fabs(f))
8#else
9#include <fenv.h>
10#endif
11
12#if defined(__OpenBSD__) || defined(__NetBSD__)
13#include <sys/param.h>
14#endif
15
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 */
23#if defined(CONFIG_SOLARIS) && \
24 ((CONFIG_SOLARIS_VERSION <= 9 ) || \
25 ((CONFIG_SOLARIS_VERSION >= 10) && (__GNUC__ < 4))) \
26 || (defined(__OpenBSD__) && (OpenBSD < 200811))
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 */
35#if defined(__OpenBSD__)
36#define unordered(x, y) (isnan(x) || isnan(y))
37#endif
38
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
58# if !defined(VBOX) || !defined(isnormal) || !defined(isgreater) || !defined(isgreaterequal) || !defined(isless) || !defined(islessequal) || !defined(isunordered)
59#define isnormal(x) (fpclass(x) >= FP_NZERO)
60#define isgreater(x, y) ((!unordered(x, y)) && ((x) > (y)))
61#define isgreaterequal(x, y) ((!unordered(x, y)) && ((x) >= (y)))
62#define isless(x, y) ((!unordered(x, y)) && ((x) < (y)))
63#define islessequal(x, y) ((!unordered(x, y)) && ((x) <= (y)))
64#define isunordered(x,y) unordered(x, y)
65# endif /* !VBOX || missing */
66#endif
67
68#if defined(__sun__) && !defined(CONFIG_NEEDS_LIBSUNMATH)
69
70#ifndef isnan
71# define isnan(x) \
72 (sizeof (x) == sizeof (long double) ? isnan_ld (x) \
73 : sizeof (x) == sizeof (double) ? isnan_d (x) \
74 : isnan_f (x))
75static inline int isnan_f (float x) { return x != x; }
76static inline int isnan_d (double x) { return x != x; }
77static inline int isnan_ld (long double x) { return x != x; }
78#endif
79
80#ifndef isinf
81# define isinf(x) \
82 (sizeof (x) == sizeof (long double) ? isinf_ld (x) \
83 : sizeof (x) == sizeof (double) ? isinf_d (x) \
84 : isinf_f (x))
85static inline int isinf_f (float x) { return isnan (x - x); }
86static inline int isinf_d (double x) { return isnan (x - x); }
87static inline int isinf_ld (long double x) { return isnan (x - x); }
88#endif
89#endif
90
91typedef float float32;
92typedef double float64;
93#ifdef FLOATX80
94typedef long double floatx80;
95#endif
96
97typedef union {
98 float32 f;
99 uint32_t i;
100} float32u;
101typedef union {
102 float64 f;
103 uint64_t i;
104} float64u;
105#ifdef FLOATX80
106typedef union {
107 floatx80 f;
108 struct {
109 uint64_t low;
110 uint16_t high;
111 } i;
112} floatx80u;
113#endif
114
115/*----------------------------------------------------------------------------
116| Software IEC/IEEE floating-point rounding mode.
117*----------------------------------------------------------------------------*/
118#if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) \
119 || defined(CONFIG_SOLARIS)
120#if defined(__OpenBSD__)
121#define FE_RM FP_RM
122#define FE_RP FP_RP
123#define FE_RZ FP_RZ
124#endif
125enum {
126 float_round_nearest_even = FP_RN,
127 float_round_down = FP_RM,
128 float_round_up = FP_RP,
129 float_round_to_zero = FP_RZ
130};
131#elif defined(__arm__)
132enum {
133 float_round_nearest_even = 0,
134 float_round_down = 1,
135 float_round_up = 2,
136 float_round_to_zero = 3
137};
138#else
139enum {
140 float_round_nearest_even = FE_TONEAREST,
141 float_round_down = FE_DOWNWARD,
142 float_round_up = FE_UPWARD,
143 float_round_to_zero = FE_TOWARDZERO
144};
145#endif
146
147typedef struct float_status {
148 int float_rounding_mode;
149#ifdef FLOATX80
150 int floatx80_rounding_precision;
151#endif
152} float_status;
153
154void set_float_rounding_mode(int val STATUS_PARAM);
155#ifdef FLOATX80
156void set_floatx80_rounding_precision(int val STATUS_PARAM);
157#endif
158
159/*----------------------------------------------------------------------------
160| Software IEC/IEEE integer-to-floating-point conversion routines.
161*----------------------------------------------------------------------------*/
162float32 int32_to_float32( int STATUS_PARAM);
163float32 uint32_to_float32( unsigned int STATUS_PARAM);
164float64 int32_to_float64( int STATUS_PARAM);
165float64 uint32_to_float64( unsigned int STATUS_PARAM);
166#ifdef FLOATX80
167floatx80 int32_to_floatx80( int STATUS_PARAM);
168#endif
169#ifdef FLOAT128
170float128 int32_to_float128( int STATUS_PARAM);
171#endif
172float32 int64_to_float32( int64_t STATUS_PARAM);
173float32 uint64_to_float32( uint64_t STATUS_PARAM);
174float64 int64_to_float64( int64_t STATUS_PARAM);
175float64 uint64_to_float64( uint64_t v STATUS_PARAM);
176#ifdef FLOATX80
177floatx80 int64_to_floatx80( int64_t STATUS_PARAM);
178#endif
179#ifdef FLOAT128
180float128 int64_to_float128( int64_t STATUS_PARAM);
181#endif
182
183/*----------------------------------------------------------------------------
184| Software IEC/IEEE single-precision conversion routines.
185*----------------------------------------------------------------------------*/
186int float32_to_int32( float32 STATUS_PARAM);
187int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
188unsigned int float32_to_uint32( float32 a STATUS_PARAM);
189unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM);
190int64_t float32_to_int64( float32 STATUS_PARAM);
191int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM);
192float64 float32_to_float64( float32 STATUS_PARAM);
193#ifdef FLOATX80
194floatx80 float32_to_floatx80( float32 STATUS_PARAM);
195#endif
196#ifdef FLOAT128
197float128 float32_to_float128( float32 STATUS_PARAM);
198#endif
199
200/*----------------------------------------------------------------------------
201| Software IEC/IEEE single-precision operations.
202*----------------------------------------------------------------------------*/
203float32 float32_round_to_int( float32 STATUS_PARAM);
204INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM)
205{
206 return a + b;
207}
208INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM)
209{
210 return a - b;
211}
212INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM)
213{
214 return a * b;
215}
216INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM)
217{
218 return a / b;
219}
220float32 float32_rem( float32, float32 STATUS_PARAM);
221float32 float32_sqrt( float32 STATUS_PARAM);
222INLINE int float32_eq( float32 a, float32 b STATUS_PARAM)
223{
224 return a == b;
225}
226INLINE int float32_le( float32 a, float32 b STATUS_PARAM)
227{
228 return a <= b;
229}
230INLINE int float32_lt( float32 a, float32 b STATUS_PARAM)
231{
232 return a < b;
233}
234INLINE int float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
235{
236 return a <= b && a >= b;
237}
238INLINE int float32_le_quiet( float32 a, float32 b STATUS_PARAM)
239{
240 return islessequal(a, b);
241}
242INLINE int float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
243{
244 return isless(a, b);
245}
246INLINE int float32_unordered( float32 a, float32 b STATUS_PARAM)
247{
248 return isunordered(a, b);
249
250}
251int float32_compare( float32, float32 STATUS_PARAM );
252int float32_compare_quiet( float32, float32 STATUS_PARAM );
253int float32_is_signaling_nan( float32 );
254int float32_is_nan( float32 );
255
256INLINE float32 float32_abs(float32 a)
257{
258 return fabsf(a);
259}
260
261INLINE float32 float32_chs(float32 a)
262{
263 return -a;
264}
265
266INLINE float32 float32_is_infinity(float32 a)
267{
268 return fpclassify(a) == FP_INFINITE;
269}
270
271INLINE float32 float32_is_neg(float32 a)
272{
273 float32u u;
274 u.f = a;
275 return u.i >> 31;
276}
277
278INLINE float32 float32_is_zero(float32 a)
279{
280 return fpclassify(a) == FP_ZERO;
281}
282
283INLINE float32 float32_scalbn(float32 a, int n)
284{
285 return scalbnf(a, n);
286}
287
288/*----------------------------------------------------------------------------
289| Software IEC/IEEE double-precision conversion routines.
290*----------------------------------------------------------------------------*/
291int float64_to_int32( float64 STATUS_PARAM );
292int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
293unsigned int float64_to_uint32( float64 STATUS_PARAM );
294unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
295int64_t float64_to_int64( float64 STATUS_PARAM );
296int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
297uint64_t float64_to_uint64( float64 STATUS_PARAM );
298uint64_t float64_to_uint64_round_to_zero( float64 STATUS_PARAM );
299float32 float64_to_float32( float64 STATUS_PARAM );
300#ifdef FLOATX80
301floatx80 float64_to_floatx80( float64 STATUS_PARAM );
302#endif
303#ifdef FLOAT128
304float128 float64_to_float128( float64 STATUS_PARAM );
305#endif
306
307/*----------------------------------------------------------------------------
308| Software IEC/IEEE double-precision operations.
309*----------------------------------------------------------------------------*/
310float64 float64_round_to_int( float64 STATUS_PARAM );
311float64 float64_trunc_to_int( float64 STATUS_PARAM );
312INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM)
313{
314 return a + b;
315}
316INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM)
317{
318 return a - b;
319}
320INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM)
321{
322 return a * b;
323}
324INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM)
325{
326 return a / b;
327}
328float64 float64_rem( float64, float64 STATUS_PARAM );
329float64 float64_sqrt( float64 STATUS_PARAM );
330INLINE int float64_eq( float64 a, float64 b STATUS_PARAM)
331{
332 return a == b;
333}
334INLINE int float64_le( float64 a, float64 b STATUS_PARAM)
335{
336 return a <= b;
337}
338INLINE int float64_lt( float64 a, float64 b STATUS_PARAM)
339{
340 return a < b;
341}
342INLINE int float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
343{
344 return a <= b && a >= b;
345}
346INLINE int float64_le_quiet( float64 a, float64 b STATUS_PARAM)
347{
348 return islessequal(a, b);
349}
350INLINE int float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
351{
352 return isless(a, b);
353
354}
355INLINE int float64_unordered( float64 a, float64 b STATUS_PARAM)
356{
357 return isunordered(a, b);
358
359}
360int float64_compare( float64, float64 STATUS_PARAM );
361int float64_compare_quiet( float64, float64 STATUS_PARAM );
362int float64_is_signaling_nan( float64 );
363int float64_is_nan( float64 );
364
365INLINE float64 float64_abs(float64 a)
366{
367 return fabs(a);
368}
369
370INLINE float64 float64_chs(float64 a)
371{
372 return -a;
373}
374
375INLINE float64 float64_is_infinity(float64 a)
376{
377 return fpclassify(a) == FP_INFINITE;
378}
379
380INLINE float64 float64_is_neg(float64 a)
381{
382 float64u u;
383 u.f = a;
384 return u.i >> 63;
385}
386
387INLINE float64 float64_is_zero(float64 a)
388{
389 return fpclassify(a) == FP_ZERO;
390}
391
392INLINE float64 float64_scalbn(float64 a, int n)
393{
394 return scalbn(a, n);
395}
396
397#ifdef FLOATX80
398
399/*----------------------------------------------------------------------------
400| Software IEC/IEEE extended double-precision conversion routines.
401*----------------------------------------------------------------------------*/
402int floatx80_to_int32( floatx80 STATUS_PARAM );
403int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
404int64_t floatx80_to_int64( floatx80 STATUS_PARAM);
405int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM);
406float32 floatx80_to_float32( floatx80 STATUS_PARAM );
407float64 floatx80_to_float64( floatx80 STATUS_PARAM );
408#ifdef FLOAT128
409float128 floatx80_to_float128( floatx80 STATUS_PARAM );
410#endif
411
412/*----------------------------------------------------------------------------
413| Software IEC/IEEE extended double-precision operations.
414*----------------------------------------------------------------------------*/
415floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
416INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM)
417{
418 return a + b;
419}
420INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM)
421{
422 return a - b;
423}
424INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM)
425{
426 return a * b;
427}
428INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM)
429{
430 return a / b;
431}
432floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
433floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
434INLINE int floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
435{
436 return a == b;
437}
438INLINE int floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
439{
440 return a <= b;
441}
442INLINE int floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
443{
444 return a < b;
445}
446INLINE int floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
447{
448 return a <= b && a >= b;
449}
450INLINE int floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
451{
452 return islessequal(a, b);
453}
454INLINE int floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
455{
456 return isless(a, b);
457
458}
459INLINE int floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
460{
461 return isunordered(a, b);
462
463}
464int floatx80_compare( floatx80, floatx80 STATUS_PARAM );
465int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
466int floatx80_is_signaling_nan( floatx80 );
467int floatx80_is_nan( floatx80 );
468
469INLINE floatx80 floatx80_abs(floatx80 a)
470{
471 return fabsl(a);
472}
473
474INLINE floatx80 floatx80_chs(floatx80 a)
475{
476 return -a;
477}
478
479INLINE floatx80 floatx80_is_infinity(floatx80 a)
480{
481 return fpclassify(a) == FP_INFINITE;
482}
483
484INLINE floatx80 floatx80_is_neg(floatx80 a)
485{
486 floatx80u u;
487 u.f = a;
488 return u.i.high >> 15;
489}
490
491INLINE floatx80 floatx80_is_zero(floatx80 a)
492{
493 return fpclassify(a) == FP_ZERO;
494}
495
496INLINE floatx80 floatx80_scalbn(floatx80 a, int n)
497{
498 return scalbnl(a, n);
499}
500
501#endif
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