1
2
3#include "softfloat.h"
4#include <math.h>
5#if defined(CONFIG_SOLARIS)
6#include <fenv.h>
7#endif
8
9void set_float_rounding_mode(int val STATUS_PARAM)
10{
11 STATUS(float_rounding_mode) = val;
12#if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) || \
13 (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10)
14 fpsetround(val);
15#else
16 fesetround(val);
17#endif
18}
19
20#ifdef FLOATX80
21void set_floatx80_rounding_precision(int val STATUS_PARAM)
22{
23 STATUS(floatx80_rounding_precision) = val;
24}
25#endif
26
27#if defined(CONFIG_BSD) || \
28 (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10)
29#define lrint(d) ((int32_t)rint(d))
30#define llrint(d) ((int64_t)rint(d))
31#define lrintf(f) ((int32_t)rint(f))
32#define llrintf(f) ((int64_t)rint(f))
33#define sqrtf(f) ((float)sqrt(f))
34#define remainderf(fa, fb) ((float)remainder(fa, fb))
35#define rintf(f) ((float)rint(f))
36#if !defined(__sparc__) && \
37 (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10)
38extern long double rintl(long double);
39extern long double scalbnl(long double, int);
40
41long long
42llrintl(long double x) {
43 return ((long long) rintl(x));
44}
45
46long
47lrintl(long double x) {
48 return ((long) rintl(x));
49}
50
51long double
52ldexpl(long double x, int n) {
53 return (scalbnl(x, n));
54}
55#endif
56#endif
57
58#if defined(_ARCH_PPC)
59
60
61static double qemu_rint(double x)
62{
63 double y = 4503599627370496.0;
64 if (fabs(x) >= y)
65 return x;
66 if (x < 0)
67 y = -y;
68 y = (x + y) - y;
69 if (y == 0.0)
70 y = copysign(y, x);
71 return y;
72}
73
74#define rint qemu_rint
75#endif
76
77
78
79
80float32 int32_to_float32(int v STATUS_PARAM)
81{
82 return (float32)v;
83}
84
85float32 uint32_to_float32(unsigned int v STATUS_PARAM)
86{
87 return (float32)v;
88}
89
90float64 int32_to_float64(int v STATUS_PARAM)
91{
92 return (float64)v;
93}
94
95float64 uint32_to_float64(unsigned int v STATUS_PARAM)
96{
97 return (float64)v;
98}
99
100#ifdef FLOATX80
101floatx80 int32_to_floatx80(int v STATUS_PARAM)
102{
103 return (floatx80)v;
104}
105#endif
106float32 int64_to_float32( int64_t v STATUS_PARAM)
107{
108 return (float32)v;
109}
110float32 uint64_to_float32( uint64_t v STATUS_PARAM)
111{
112 return (float32)v;
113}
114float64 int64_to_float64( int64_t v STATUS_PARAM)
115{
116 return (float64)v;
117}
118float64 uint64_to_float64( uint64_t v STATUS_PARAM)
119{
120 return (float64)v;
121}
122#ifdef FLOATX80
123floatx80 int64_to_floatx80( int64_t v STATUS_PARAM)
124{
125 return (floatx80)v;
126}
127#endif
128
129
130#if HOST_LONG_BITS == 32
131static inline int long_to_int32(long a)
132{
133 return a;
134}
135#else
136static inline int long_to_int32(long a)
137{
138 if (a != (int32_t)a)
139 a = 0x80000000;
140 return a;
141}
142#endif
143
144
145
146
147int float32_to_int32( float32 a STATUS_PARAM)
148{
149 return long_to_int32(lrintf(a));
150}
151int float32_to_int32_round_to_zero( float32 a STATUS_PARAM)
152{
153 return (int)a;
154}
155int64_t float32_to_int64( float32 a STATUS_PARAM)
156{
157 return llrintf(a);
158}
159
160int64_t float32_to_int64_round_to_zero( float32 a STATUS_PARAM)
161{
162 return (int64_t)a;
163}
164
165float64 float32_to_float64( float32 a STATUS_PARAM)
166{
167 return a;
168}
169#ifdef FLOATX80
170floatx80 float32_to_floatx80( float32 a STATUS_PARAM)
171{
172 return a;
173}
174#endif
175
176unsigned int float32_to_uint32( float32 a STATUS_PARAM)
177{
178 int64_t v;
179 unsigned int res;
180
181 v = llrintf(a);
182 if (v < 0) {
183 res = 0;
184 } else if (v > 0xffffffff) {
185 res = 0xffffffff;
186 } else {
187 res = v;
188 }
189 return res;
190}
191unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM)
192{
193 int64_t v;
194 unsigned int res;
195
196 v = (int64_t)a;
197 if (v < 0) {
198 res = 0;
199 } else if (v > 0xffffffff) {
200 res = 0xffffffff;
201 } else {
202 res = v;
203 }
204 return res;
205}
206
207
208
209
210float32 float32_round_to_int( float32 a STATUS_PARAM)
211{
212 return rintf(a);
213}
214
215float32 float32_rem( float32 a, float32 b STATUS_PARAM)
216{
217 return remainderf(a, b);
218}
219
220float32 float32_sqrt( float32 a STATUS_PARAM)
221{
222 return sqrtf(a);
223}
224int float32_compare( float32 a, float32 b STATUS_PARAM )
225{
226 if (a < b) {
227 return float_relation_less;
228 } else if (a == b) {
229 return float_relation_equal;
230 } else if (a > b) {
231 return float_relation_greater;
232 } else {
233 return float_relation_unordered;
234 }
235}
236int float32_compare_quiet( float32 a, float32 b STATUS_PARAM )
237{
238 if (isless(a, b)) {
239 return float_relation_less;
240 } else if (a == b) {
241 return float_relation_equal;
242 } else if (isgreater(a, b)) {
243 return float_relation_greater;
244 } else {
245 return float_relation_unordered;
246 }
247}
248int float32_is_signaling_nan( float32 a1)
249{
250 float32u u;
251 uint32_t a;
252 u.f = a1;
253 a = u.i;
254 return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF );
255}
256
257int float32_is_quiet_nan( float32 a1 )
258{
259 float32u u;
260 uint64_t a;
261 u.f = a1;
262 a = u.i;
263 return ( 0xFF800000 < ( a<<1 ) );
264}
265
266
267
268
269int float64_to_int32( float64 a STATUS_PARAM)
270{
271 return long_to_int32(lrint(a));
272}
273int float64_to_int32_round_to_zero( float64 a STATUS_PARAM)
274{
275 return (int)a;
276}
277int64_t float64_to_int64( float64 a STATUS_PARAM)
278{
279 return llrint(a);
280}
281int64_t float64_to_int64_round_to_zero( float64 a STATUS_PARAM)
282{
283 return (int64_t)a;
284}
285float32 float64_to_float32( float64 a STATUS_PARAM)
286{
287 return a;
288}
289#ifdef FLOATX80
290floatx80 float64_to_floatx80( float64 a STATUS_PARAM)
291{
292 return a;
293}
294#endif
295#ifdef FLOAT128
296float128 float64_to_float128( float64 a STATUS_PARAM)
297{
298 return a;
299}
300#endif
301
302unsigned int float64_to_uint32( float64 a STATUS_PARAM)
303{
304 int64_t v;
305 unsigned int res;
306
307 v = llrint(a);
308 if (v < 0) {
309 res = 0;
310 } else if (v > 0xffffffff) {
311 res = 0xffffffff;
312 } else {
313 res = v;
314 }
315 return res;
316}
317unsigned int float64_to_uint32_round_to_zero( float64 a STATUS_PARAM)
318{
319 int64_t v;
320 unsigned int res;
321
322 v = (int64_t)a;
323 if (v < 0) {
324 res = 0;
325 } else if (v > 0xffffffff) {
326 res = 0xffffffff;
327 } else {
328 res = v;
329 }
330 return res;
331}
332uint64_t float64_to_uint64 (float64 a STATUS_PARAM)
333{
334 int64_t v;
335
336 v = llrint(a + (float64)INT64_MIN);
337
338 return v - INT64_MIN;
339}
340uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM)
341{
342 int64_t v;
343
344 v = (int64_t)(a + (float64)INT64_MIN);
345
346 return v - INT64_MIN;
347}
348
349
350
351
352#if defined(__sun__) && \
353 (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10)
354static inline float64 trunc(float64 x)
355{
356 return x < 0 ? -floor(-x) : floor(x);
357}
358#endif
359float64 float64_trunc_to_int( float64 a STATUS_PARAM )
360{
361 return trunc(a);
362}
363
364float64 float64_round_to_int( float64 a STATUS_PARAM )
365{
366 return rint(a);
367}
368
369float64 float64_rem( float64 a, float64 b STATUS_PARAM)
370{
371 return remainder(a, b);
372}
373
374float64 float64_sqrt( float64 a STATUS_PARAM)
375{
376 return sqrt(a);
377}
378int float64_compare( float64 a, float64 b STATUS_PARAM )
379{
380 if (a < b) {
381 return float_relation_less;
382 } else if (a == b) {
383 return float_relation_equal;
384 } else if (a > b) {
385 return float_relation_greater;
386 } else {
387 return float_relation_unordered;
388 }
389}
390int float64_compare_quiet( float64 a, float64 b STATUS_PARAM )
391{
392 if (isless(a, b)) {
393 return float_relation_less;
394 } else if (a == b) {
395 return float_relation_equal;
396 } else if (isgreater(a, b)) {
397 return float_relation_greater;
398 } else {
399 return float_relation_unordered;
400 }
401}
402int float64_is_signaling_nan( float64 a1)
403{
404 float64u u;
405 uint64_t a;
406 u.f = a1;
407 a = u.i;
408 return
409 ( ( ( a>>51 ) & 0xFFF ) == 0xFFE )
410 && ( a & LIT64( 0x0007FFFFFFFFFFFF ) );
411
412}
413
414int float64_is_quiet_nan( float64 a1 )
415{
416 float64u u;
417 uint64_t a;
418 u.f = a1;
419 a = u.i;
420
421 return ( LIT64( 0xFFF0000000000000 ) < (bits64) ( a<<1 ) );
422
423}
424
425#ifdef FLOATX80
426
427
428
429
430int floatx80_to_int32( floatx80 a STATUS_PARAM)
431{
432 return long_to_int32(lrintl(a));
433}
434int floatx80_to_int32_round_to_zero( floatx80 a STATUS_PARAM)
435{
436 return (int)a;
437}
438int64_t floatx80_to_int64( floatx80 a STATUS_PARAM)
439{
440 return llrintl(a);
441}
442int64_t floatx80_to_int64_round_to_zero( floatx80 a STATUS_PARAM)
443{
444 return (int64_t)a;
445}
446float32 floatx80_to_float32( floatx80 a STATUS_PARAM)
447{
448 return a;
449}
450float64 floatx80_to_float64( floatx80 a STATUS_PARAM)
451{
452 return a;
453}
454
455
456
457
458floatx80 floatx80_round_to_int( floatx80 a STATUS_PARAM)
459{
460 return rintl(a);
461}
462floatx80 floatx80_rem( floatx80 a, floatx80 b STATUS_PARAM)
463{
464 return remainderl(a, b);
465}
466floatx80 floatx80_sqrt( floatx80 a STATUS_PARAM)
467{
468 return sqrtl(a);
469}
470int floatx80_compare( floatx80 a, floatx80 b STATUS_PARAM )
471{
472 if (a < b) {
473 return float_relation_less;
474 } else if (a == b) {
475 return float_relation_equal;
476 } else if (a > b) {
477 return float_relation_greater;
478 } else {
479 return float_relation_unordered;
480 }
481}
482int floatx80_compare_quiet( floatx80 a, floatx80 b STATUS_PARAM )
483{
484 if (isless(a, b)) {
485 return float_relation_less;
486 } else if (a == b) {
487 return float_relation_equal;
488 } else if (isgreater(a, b)) {
489 return float_relation_greater;
490 } else {
491 return float_relation_unordered;
492 }
493}
494int floatx80_is_signaling_nan( floatx80 a1)
495{
496 floatx80u u;
497 uint64_t aLow;
498 u.f = a1;
499
500 aLow = u.i.low & ~ LIT64( 0x4000000000000000 );
501 return
502 ( ( u.i.high & 0x7FFF ) == 0x7FFF )
503 && (bits64) ( aLow<<1 )
504 && ( u.i.low == aLow );
505}
506
507int floatx80_is_quiet_nan( floatx80 a1 )
508{
509 floatx80u u;
510 u.f = a1;
511 return ( ( u.i.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( u.i.low<<1 );
512}
513
514#endif
515
