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bellard158142c2005-03-13 16:54:06 +00001/* Native implementation of soft float functions */
2#include <math.h>
bellard38cfa062006-05-01 13:58:07 +00003
4#if (defined(_BSD) && !defined(__APPLE__)) || defined(HOST_SOLARIS)
bellard158142c2005-03-13 16:54:06 +00005#include <ieeefp.h>
bellard38cfa062006-05-01 13:58:07 +00006#define fabsf(f) ((float)fabs(f))
bellard158142c2005-03-13 16:54:06 +00007#else
8#include <fenv.h>
9#endif
bellard38cfa062006-05-01 13:58:07 +000010
blueswir17c2a9d02008-08-24 10:29:29 +000011#ifdef __OpenBSD__
12/* Get OpenBSD version number */
13#include <sys/param.h>
14#endif
15
bellard38cfa062006-05-01 13:58:07 +000016/*
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 */
blueswir1128ab2f2008-08-15 18:33:42 +000023#if defined(HOST_SOLARIS) && (( HOST_SOLARIS <= 9 ) || ((HOST_SOLARIS >= 10) \
24 && (__GNUC__ <= 4))) \
blueswir17c2a9d02008-08-24 10:29:29 +000025 || (defined(__OpenBSD__) && (OpenBSD < 200811))
bellard38cfa062006-05-01 13:58:07 +000026/*
27 * C99 7.12.3 classification macros
28 * and
29 * C99 7.12.14 comparison macros
30 *
31 * ... do not work on Solaris 10 using GNU CC 3.4.x.
32 * Try to workaround the missing / broken C99 math macros.
33 */
blueswir1128ab2f2008-08-15 18:33:42 +000034#if defined(__OpenBSD__)
35#define unordered(x, y) (isnan(x) || isnan(y))
36#endif
bellard38cfa062006-05-01 13:58:07 +000037
38#define isnormal(x) (fpclass(x) >= FP_NZERO)
39#define isgreater(x, y) ((!unordered(x, y)) && ((x) > (y)))
40#define isgreaterequal(x, y) ((!unordered(x, y)) && ((x) >= (y)))
41#define isless(x, y) ((!unordered(x, y)) && ((x) < (y)))
42#define islessequal(x, y) ((!unordered(x, y)) && ((x) <= (y)))
43#define isunordered(x,y) unordered(x, y)
bellardec530c82006-04-25 22:36:06 +000044#endif
bellard158142c2005-03-13 16:54:06 +000045
thsc94655b2007-04-17 21:57:02 +000046#if defined(__sun__) && !defined(NEED_LIBSUNMATH)
47
48#ifndef isnan
49# define isnan(x) \
50 (sizeof (x) == sizeof (long double) ? isnan_ld (x) \
51 : sizeof (x) == sizeof (double) ? isnan_d (x) \
52 : isnan_f (x))
53static inline int isnan_f (float x) { return x != x; }
54static inline int isnan_d (double x) { return x != x; }
55static inline int isnan_ld (long double x) { return x != x; }
56#endif
57
58#ifndef isinf
59# define isinf(x) \
60 (sizeof (x) == sizeof (long double) ? isinf_ld (x) \
61 : sizeof (x) == sizeof (double) ? isinf_d (x) \
62 : isinf_f (x))
63static inline int isinf_f (float x) { return isnan (x - x); }
64static inline int isinf_d (double x) { return isnan (x - x); }
65static inline int isinf_ld (long double x) { return isnan (x - x); }
66#endif
67#endif
68
bellard158142c2005-03-13 16:54:06 +000069typedef float float32;
70typedef double float64;
71#ifdef FLOATX80
72typedef long double floatx80;
73#endif
74
75typedef union {
76 float32 f;
77 uint32_t i;
78} float32u;
79typedef union {
80 float64 f;
81 uint64_t i;
82} float64u;
83#ifdef FLOATX80
84typedef union {
85 floatx80 f;
86 struct {
87 uint64_t low;
88 uint16_t high;
89 } i;
90} floatx80u;
91#endif
92
93/*----------------------------------------------------------------------------
94| Software IEC/IEEE floating-point rounding mode.
95*----------------------------------------------------------------------------*/
bellard38cfa062006-05-01 13:58:07 +000096#if (defined(_BSD) && !defined(__APPLE__)) || defined(HOST_SOLARIS)
blueswir1128ab2f2008-08-15 18:33:42 +000097#if defined(__OpenBSD__)
98#define FE_RM FP_RM
99#define FE_RP FP_RP
100#define FE_RZ FP_RZ
101#endif
bellard158142c2005-03-13 16:54:06 +0000102enum {
103 float_round_nearest_even = FP_RN,
pbrook7918bf42006-04-28 15:26:51 +0000104 float_round_down = FP_RM,
105 float_round_up = FP_RP,
106 float_round_to_zero = FP_RZ
bellard158142c2005-03-13 16:54:06 +0000107};
108#elif defined(__arm__)
109enum {
110 float_round_nearest_even = 0,
111 float_round_down = 1,
112 float_round_up = 2,
113 float_round_to_zero = 3
114};
115#else
116enum {
117 float_round_nearest_even = FE_TONEAREST,
118 float_round_down = FE_DOWNWARD,
119 float_round_up = FE_UPWARD,
120 float_round_to_zero = FE_TOWARDZERO
121};
122#endif
123
124typedef struct float_status {
125 signed char float_rounding_mode;
126#ifdef FLOATX80
127 signed char floatx80_rounding_precision;
128#endif
129} float_status;
130
131void set_float_rounding_mode(int val STATUS_PARAM);
132#ifdef FLOATX80
133void set_floatx80_rounding_precision(int val STATUS_PARAM);
134#endif
135
136/*----------------------------------------------------------------------------
137| Software IEC/IEEE integer-to-floating-point conversion routines.
138*----------------------------------------------------------------------------*/
139float32 int32_to_float32( int STATUS_PARAM);
j_mayer75d62a52007-03-20 22:10:42 +0000140float32 uint32_to_float32( unsigned int STATUS_PARAM);
bellard158142c2005-03-13 16:54:06 +0000141float64 int32_to_float64( int STATUS_PARAM);
j_mayer75d62a52007-03-20 22:10:42 +0000142float64 uint32_to_float64( unsigned int STATUS_PARAM);
bellard158142c2005-03-13 16:54:06 +0000143#ifdef FLOATX80
144floatx80 int32_to_floatx80( int STATUS_PARAM);
145#endif
146#ifdef FLOAT128
147float128 int32_to_float128( int STATUS_PARAM);
148#endif
149float32 int64_to_float32( int64_t STATUS_PARAM);
j_mayer75d62a52007-03-20 22:10:42 +0000150float32 uint64_to_float32( uint64_t STATUS_PARAM);
bellard158142c2005-03-13 16:54:06 +0000151float64 int64_to_float64( int64_t STATUS_PARAM);
j_mayer75d62a52007-03-20 22:10:42 +0000152float64 uint64_to_float64( uint64_t v STATUS_PARAM);
bellard158142c2005-03-13 16:54:06 +0000153#ifdef FLOATX80
154floatx80 int64_to_floatx80( int64_t STATUS_PARAM);
155#endif
156#ifdef FLOAT128
157float128 int64_to_float128( int64_t STATUS_PARAM);
158#endif
159
160/*----------------------------------------------------------------------------
161| Software IEC/IEEE single-precision conversion routines.
162*----------------------------------------------------------------------------*/
163int float32_to_int32( float32 STATUS_PARAM);
164int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
j_mayer75d62a52007-03-20 22:10:42 +0000165unsigned int float32_to_uint32( float32 a STATUS_PARAM);
166unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM);
bellard158142c2005-03-13 16:54:06 +0000167int64_t float32_to_int64( float32 STATUS_PARAM);
168int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM);
169float64 float32_to_float64( float32 STATUS_PARAM);
170#ifdef FLOATX80
171floatx80 float32_to_floatx80( float32 STATUS_PARAM);
172#endif
173#ifdef FLOAT128
174float128 float32_to_float128( float32 STATUS_PARAM);
175#endif
176
177/*----------------------------------------------------------------------------
178| Software IEC/IEEE single-precision operations.
179*----------------------------------------------------------------------------*/
180float32 float32_round_to_int( float32 STATUS_PARAM);
181INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM)
182{
183 return a + b;
184}
185INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM)
186{
187 return a - b;
188}
189INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM)
190{
191 return a * b;
192}
193INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM)
194{
195 return a / b;
196}
197float32 float32_rem( float32, float32 STATUS_PARAM);
198float32 float32_sqrt( float32 STATUS_PARAM);
bellard750afe92006-10-28 19:27:11 +0000199INLINE int float32_eq( float32 a, float32 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000200{
bellard158142c2005-03-13 16:54:06 +0000201 return a == b;
202}
bellard750afe92006-10-28 19:27:11 +0000203INLINE int float32_le( float32 a, float32 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000204{
205 return a <= b;
206}
bellard750afe92006-10-28 19:27:11 +0000207INLINE int float32_lt( float32 a, float32 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000208{
209 return a < b;
210}
bellard750afe92006-10-28 19:27:11 +0000211INLINE int float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000212{
bellardb109f9f2005-03-20 10:33:58 +0000213 return a <= b && a >= b;
bellard158142c2005-03-13 16:54:06 +0000214}
bellard750afe92006-10-28 19:27:11 +0000215INLINE int float32_le_quiet( float32 a, float32 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000216{
217 return islessequal(a, b);
218}
bellard750afe92006-10-28 19:27:11 +0000219INLINE int float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000220{
221 return isless(a, b);
222}
bellard750afe92006-10-28 19:27:11 +0000223INLINE int float32_unordered( float32 a, float32 b STATUS_PARAM)
bellardb109f9f2005-03-20 10:33:58 +0000224{
225 return isunordered(a, b);
226
227}
bellard750afe92006-10-28 19:27:11 +0000228int float32_compare( float32, float32 STATUS_PARAM );
229int float32_compare_quiet( float32, float32 STATUS_PARAM );
230int float32_is_signaling_nan( float32 );
bellard158142c2005-03-13 16:54:06 +0000231
232INLINE float32 float32_abs(float32 a)
233{
234 return fabsf(a);
235}
236
237INLINE float32 float32_chs(float32 a)
238{
239 return -a;
240}
241
pbrook9ee6e8b2007-11-11 00:04:49 +0000242INLINE float32 float32_scalbn(float32 a, int n)
243{
244 return scalbnf(a, n);
245}
246
bellard158142c2005-03-13 16:54:06 +0000247/*----------------------------------------------------------------------------
248| Software IEC/IEEE double-precision conversion routines.
249*----------------------------------------------------------------------------*/
250int float64_to_int32( float64 STATUS_PARAM );
251int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
j_mayer75d62a52007-03-20 22:10:42 +0000252unsigned int float64_to_uint32( float64 STATUS_PARAM );
253unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
bellard158142c2005-03-13 16:54:06 +0000254int64_t float64_to_int64( float64 STATUS_PARAM );
255int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
j_mayer75d62a52007-03-20 22:10:42 +0000256uint64_t float64_to_uint64( float64 STATUS_PARAM );
257uint64_t float64_to_uint64_round_to_zero( float64 STATUS_PARAM );
bellard158142c2005-03-13 16:54:06 +0000258float32 float64_to_float32( float64 STATUS_PARAM );
259#ifdef FLOATX80
260floatx80 float64_to_floatx80( float64 STATUS_PARAM );
261#endif
262#ifdef FLOAT128
263float128 float64_to_float128( float64 STATUS_PARAM );
264#endif
265
266/*----------------------------------------------------------------------------
267| Software IEC/IEEE double-precision operations.
268*----------------------------------------------------------------------------*/
269float64 float64_round_to_int( float64 STATUS_PARAM );
pbrooke6e59062006-10-22 00:18:54 +0000270float64 float64_trunc_to_int( float64 STATUS_PARAM );
bellard158142c2005-03-13 16:54:06 +0000271INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM)
272{
273 return a + b;
274}
275INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM)
276{
277 return a - b;
278}
279INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM)
280{
281 return a * b;
282}
283INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM)
284{
285 return a / b;
286}
287float64 float64_rem( float64, float64 STATUS_PARAM );
288float64 float64_sqrt( float64 STATUS_PARAM );
bellard750afe92006-10-28 19:27:11 +0000289INLINE int float64_eq( float64 a, float64 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000290{
291 return a == b;
292}
bellard750afe92006-10-28 19:27:11 +0000293INLINE int float64_le( float64 a, float64 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000294{
295 return a <= b;
296}
bellard750afe92006-10-28 19:27:11 +0000297INLINE int float64_lt( float64 a, float64 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000298{
299 return a < b;
300}
bellard750afe92006-10-28 19:27:11 +0000301INLINE int float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000302{
bellardb109f9f2005-03-20 10:33:58 +0000303 return a <= b && a >= b;
bellard158142c2005-03-13 16:54:06 +0000304}
bellard750afe92006-10-28 19:27:11 +0000305INLINE int float64_le_quiet( float64 a, float64 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000306{
307 return islessequal(a, b);
308}
bellard750afe92006-10-28 19:27:11 +0000309INLINE int float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000310{
311 return isless(a, b);
312
313}
bellard750afe92006-10-28 19:27:11 +0000314INLINE int float64_unordered( float64 a, float64 b STATUS_PARAM)
bellardb109f9f2005-03-20 10:33:58 +0000315{
316 return isunordered(a, b);
317
318}
bellard750afe92006-10-28 19:27:11 +0000319int float64_compare( float64, float64 STATUS_PARAM );
320int float64_compare_quiet( float64, float64 STATUS_PARAM );
321int float64_is_signaling_nan( float64 );
322int float64_is_nan( float64 );
bellard158142c2005-03-13 16:54:06 +0000323
324INLINE float64 float64_abs(float64 a)
325{
326 return fabs(a);
327}
328
329INLINE float64 float64_chs(float64 a)
330{
331 return -a;
332}
333
pbrook9ee6e8b2007-11-11 00:04:49 +0000334INLINE float64 float64_scalbn(float64 a, int n)
335{
336 return scalbn(a, n);
337}
338
bellard158142c2005-03-13 16:54:06 +0000339#ifdef FLOATX80
340
341/*----------------------------------------------------------------------------
342| Software IEC/IEEE extended double-precision conversion routines.
343*----------------------------------------------------------------------------*/
344int floatx80_to_int32( floatx80 STATUS_PARAM );
345int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
346int64_t floatx80_to_int64( floatx80 STATUS_PARAM);
347int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM);
348float32 floatx80_to_float32( floatx80 STATUS_PARAM );
349float64 floatx80_to_float64( floatx80 STATUS_PARAM );
350#ifdef FLOAT128
351float128 floatx80_to_float128( floatx80 STATUS_PARAM );
352#endif
353
354/*----------------------------------------------------------------------------
355| Software IEC/IEEE extended double-precision operations.
356*----------------------------------------------------------------------------*/
357floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
358INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM)
359{
360 return a + b;
361}
362INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM)
363{
364 return a - b;
365}
366INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM)
367{
368 return a * b;
369}
370INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM)
371{
372 return a / b;
373}
374floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
375floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
bellard750afe92006-10-28 19:27:11 +0000376INLINE int floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000377{
378 return a == b;
379}
bellard750afe92006-10-28 19:27:11 +0000380INLINE int floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000381{
382 return a <= b;
383}
bellard750afe92006-10-28 19:27:11 +0000384INLINE int floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000385{
386 return a < b;
387}
bellard750afe92006-10-28 19:27:11 +0000388INLINE int floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000389{
bellardb109f9f2005-03-20 10:33:58 +0000390 return a <= b && a >= b;
bellard158142c2005-03-13 16:54:06 +0000391}
bellard750afe92006-10-28 19:27:11 +0000392INLINE int floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000393{
394 return islessequal(a, b);
395}
bellard750afe92006-10-28 19:27:11 +0000396INLINE int floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
bellard158142c2005-03-13 16:54:06 +0000397{
398 return isless(a, b);
399
400}
bellard750afe92006-10-28 19:27:11 +0000401INLINE int floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
bellardb109f9f2005-03-20 10:33:58 +0000402{
403 return isunordered(a, b);
404
405}
bellard750afe92006-10-28 19:27:11 +0000406int floatx80_compare( floatx80, floatx80 STATUS_PARAM );
407int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
408int floatx80_is_signaling_nan( floatx80 );
bellard158142c2005-03-13 16:54:06 +0000409
410INLINE floatx80 floatx80_abs(floatx80 a)
411{
412 return fabsl(a);
413}
414
415INLINE floatx80 floatx80_chs(floatx80 a)
416{
417 return -a;
418}
pbrook9ee6e8b2007-11-11 00:04:49 +0000419
420INLINE floatx80 floatx80_scalbn(floatx80 a, int n)
421{
422 return scalbnl(a, n);
423}
424
bellard158142c2005-03-13 16:54:06 +0000425#endif