root / fpu / softfloat-native.h @ 67f36560
History | View | Annotate | Download (10 kB)
1 |
/* Native implementation of soft float functions */
|
---|---|
2 |
#include <math.h> |
3 |
|
4 |
#if (defined(_BSD) && !defined(__APPLE__)) || defined(HOST_SOLARIS)
|
5 |
#include <ieeefp.h> |
6 |
#define fabsf(f) ((float)fabs(f)) |
7 |
#else
|
8 |
#include <fenv.h> |
9 |
#endif
|
10 |
|
11 |
/*
|
12 |
* Define some C99-7.12.3 classification macros and
|
13 |
* some C99-.12.4 for Solaris systems OS less than 10,
|
14 |
* or Solaris 10 systems running GCC 3.x or less.
|
15 |
* Solaris 10 with GCC4 does not need these macros as they
|
16 |
* are defined in <iso/math_c99.h> with a compiler directive
|
17 |
*/
|
18 |
#if defined(HOST_SOLARIS) && (( HOST_SOLARIS <= 9 ) || ( ( HOST_SOLARIS >= 10 ) && ( __GNUC__ <= 4) )) |
19 |
/*
|
20 |
* C99 7.12.3 classification macros
|
21 |
* and
|
22 |
* C99 7.12.14 comparison macros
|
23 |
*
|
24 |
* ... do not work on Solaris 10 using GNU CC 3.4.x.
|
25 |
* Try to workaround the missing / broken C99 math macros.
|
26 |
*/
|
27 |
|
28 |
#define isnormal(x) (fpclass(x) >= FP_NZERO)
|
29 |
#define isgreater(x, y) ((!unordered(x, y)) && ((x) > (y)))
|
30 |
#define isgreaterequal(x, y) ((!unordered(x, y)) && ((x) >= (y)))
|
31 |
#define isless(x, y) ((!unordered(x, y)) && ((x) < (y)))
|
32 |
#define islessequal(x, y) ((!unordered(x, y)) && ((x) <= (y)))
|
33 |
#define isunordered(x,y) unordered(x, y)
|
34 |
#endif
|
35 |
|
36 |
typedef float float32; |
37 |
typedef double float64; |
38 |
#ifdef FLOATX80
|
39 |
typedef long double floatx80; |
40 |
#endif
|
41 |
|
42 |
typedef union { |
43 |
float32 f; |
44 |
uint32_t i; |
45 |
} float32u; |
46 |
typedef union { |
47 |
float64 f; |
48 |
uint64_t i; |
49 |
} float64u; |
50 |
#ifdef FLOATX80
|
51 |
typedef union { |
52 |
floatx80 f; |
53 |
struct {
|
54 |
uint64_t low; |
55 |
uint16_t high; |
56 |
} i; |
57 |
} floatx80u; |
58 |
#endif
|
59 |
|
60 |
/*----------------------------------------------------------------------------
|
61 |
| Software IEC/IEEE floating-point rounding mode.
|
62 |
*----------------------------------------------------------------------------*/
|
63 |
#if (defined(_BSD) && !defined(__APPLE__)) || defined(HOST_SOLARIS)
|
64 |
enum {
|
65 |
float_round_nearest_even = FP_RN, |
66 |
float_round_down = FP_RM, |
67 |
float_round_up = FP_RP, |
68 |
float_round_to_zero = FP_RZ |
69 |
}; |
70 |
#elif defined(__arm__)
|
71 |
enum {
|
72 |
float_round_nearest_even = 0,
|
73 |
float_round_down = 1,
|
74 |
float_round_up = 2,
|
75 |
float_round_to_zero = 3
|
76 |
}; |
77 |
#else
|
78 |
enum {
|
79 |
float_round_nearest_even = FE_TONEAREST, |
80 |
float_round_down = FE_DOWNWARD, |
81 |
float_round_up = FE_UPWARD, |
82 |
float_round_to_zero = FE_TOWARDZERO |
83 |
}; |
84 |
#endif
|
85 |
|
86 |
typedef struct float_status { |
87 |
signed char float_rounding_mode; |
88 |
#ifdef FLOATX80
|
89 |
signed char floatx80_rounding_precision; |
90 |
#endif
|
91 |
} float_status; |
92 |
|
93 |
void set_float_rounding_mode(int val STATUS_PARAM); |
94 |
#ifdef FLOATX80
|
95 |
void set_floatx80_rounding_precision(int val STATUS_PARAM); |
96 |
#endif
|
97 |
|
98 |
/*----------------------------------------------------------------------------
|
99 |
| Software IEC/IEEE integer-to-floating-point conversion routines.
|
100 |
*----------------------------------------------------------------------------*/
|
101 |
float32 int32_to_float32( int STATUS_PARAM);
|
102 |
float64 int32_to_float64( int STATUS_PARAM);
|
103 |
#ifdef FLOATX80
|
104 |
floatx80 int32_to_floatx80( int STATUS_PARAM);
|
105 |
#endif
|
106 |
#ifdef FLOAT128
|
107 |
float128 int32_to_float128( int STATUS_PARAM);
|
108 |
#endif
|
109 |
float32 int64_to_float32( int64_t STATUS_PARAM); |
110 |
float64 int64_to_float64( int64_t STATUS_PARAM); |
111 |
#ifdef FLOATX80
|
112 |
floatx80 int64_to_floatx80( int64_t STATUS_PARAM); |
113 |
#endif
|
114 |
#ifdef FLOAT128
|
115 |
float128 int64_to_float128( int64_t STATUS_PARAM); |
116 |
#endif
|
117 |
|
118 |
/*----------------------------------------------------------------------------
|
119 |
| Software IEC/IEEE single-precision conversion routines.
|
120 |
*----------------------------------------------------------------------------*/
|
121 |
int float32_to_int32( float32 STATUS_PARAM);
|
122 |
int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
|
123 |
int64_t float32_to_int64( float32 STATUS_PARAM); |
124 |
int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM); |
125 |
float64 float32_to_float64( float32 STATUS_PARAM); |
126 |
#ifdef FLOATX80
|
127 |
floatx80 float32_to_floatx80( float32 STATUS_PARAM); |
128 |
#endif
|
129 |
#ifdef FLOAT128
|
130 |
float128 float32_to_float128( float32 STATUS_PARAM); |
131 |
#endif
|
132 |
|
133 |
/*----------------------------------------------------------------------------
|
134 |
| Software IEC/IEEE single-precision operations.
|
135 |
*----------------------------------------------------------------------------*/
|
136 |
float32 float32_round_to_int( float32 STATUS_PARAM); |
137 |
INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM) |
138 |
{ |
139 |
return a + b;
|
140 |
} |
141 |
INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM) |
142 |
{ |
143 |
return a - b;
|
144 |
} |
145 |
INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM) |
146 |
{ |
147 |
return a * b;
|
148 |
} |
149 |
INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM) |
150 |
{ |
151 |
return a / b;
|
152 |
} |
153 |
float32 float32_rem( float32, float32 STATUS_PARAM); |
154 |
float32 float32_sqrt( float32 STATUS_PARAM); |
155 |
INLINE char float32_eq( float32 a, float32 b STATUS_PARAM)
|
156 |
{ |
157 |
return a == b;
|
158 |
} |
159 |
INLINE char float32_le( float32 a, float32 b STATUS_PARAM)
|
160 |
{ |
161 |
return a <= b;
|
162 |
} |
163 |
INLINE char float32_lt( float32 a, float32 b STATUS_PARAM)
|
164 |
{ |
165 |
return a < b;
|
166 |
} |
167 |
INLINE char float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
|
168 |
{ |
169 |
return a <= b && a >= b;
|
170 |
} |
171 |
INLINE char float32_le_quiet( float32 a, float32 b STATUS_PARAM)
|
172 |
{ |
173 |
return islessequal(a, b);
|
174 |
} |
175 |
INLINE char float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
|
176 |
{ |
177 |
return isless(a, b);
|
178 |
} |
179 |
INLINE char float32_unordered( float32 a, float32 b STATUS_PARAM)
|
180 |
{ |
181 |
return isunordered(a, b);
|
182 |
|
183 |
} |
184 |
char float32_compare( float32, float32 STATUS_PARAM );
|
185 |
char float32_compare_quiet( float32, float32 STATUS_PARAM );
|
186 |
char float32_is_signaling_nan( float32 );
|
187 |
|
188 |
INLINE float32 float32_abs(float32 a) |
189 |
{ |
190 |
return fabsf(a);
|
191 |
} |
192 |
|
193 |
INLINE float32 float32_chs(float32 a) |
194 |
{ |
195 |
return -a;
|
196 |
} |
197 |
|
198 |
/*----------------------------------------------------------------------------
|
199 |
| Software IEC/IEEE double-precision conversion routines.
|
200 |
*----------------------------------------------------------------------------*/
|
201 |
int float64_to_int32( float64 STATUS_PARAM );
|
202 |
int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
|
203 |
int64_t float64_to_int64( float64 STATUS_PARAM ); |
204 |
int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM ); |
205 |
float32 float64_to_float32( float64 STATUS_PARAM ); |
206 |
#ifdef FLOATX80
|
207 |
floatx80 float64_to_floatx80( float64 STATUS_PARAM ); |
208 |
#endif
|
209 |
#ifdef FLOAT128
|
210 |
float128 float64_to_float128( float64 STATUS_PARAM ); |
211 |
#endif
|
212 |
|
213 |
/*----------------------------------------------------------------------------
|
214 |
| Software IEC/IEEE double-precision operations.
|
215 |
*----------------------------------------------------------------------------*/
|
216 |
float64 float64_round_to_int( float64 STATUS_PARAM ); |
217 |
INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM) |
218 |
{ |
219 |
return a + b;
|
220 |
} |
221 |
INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM) |
222 |
{ |
223 |
return a - b;
|
224 |
} |
225 |
INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM) |
226 |
{ |
227 |
return a * b;
|
228 |
} |
229 |
INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM) |
230 |
{ |
231 |
return a / b;
|
232 |
} |
233 |
float64 float64_rem( float64, float64 STATUS_PARAM ); |
234 |
float64 float64_sqrt( float64 STATUS_PARAM ); |
235 |
INLINE char float64_eq( float64 a, float64 b STATUS_PARAM)
|
236 |
{ |
237 |
return a == b;
|
238 |
} |
239 |
INLINE char float64_le( float64 a, float64 b STATUS_PARAM)
|
240 |
{ |
241 |
return a <= b;
|
242 |
} |
243 |
INLINE char float64_lt( float64 a, float64 b STATUS_PARAM)
|
244 |
{ |
245 |
return a < b;
|
246 |
} |
247 |
INLINE char float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
|
248 |
{ |
249 |
return a <= b && a >= b;
|
250 |
} |
251 |
INLINE char float64_le_quiet( float64 a, float64 b STATUS_PARAM)
|
252 |
{ |
253 |
return islessequal(a, b);
|
254 |
} |
255 |
INLINE char float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
|
256 |
{ |
257 |
return isless(a, b);
|
258 |
|
259 |
} |
260 |
INLINE char float64_unordered( float64 a, float64 b STATUS_PARAM)
|
261 |
{ |
262 |
return isunordered(a, b);
|
263 |
|
264 |
} |
265 |
char float64_compare( float64, float64 STATUS_PARAM );
|
266 |
char float64_compare_quiet( float64, float64 STATUS_PARAM );
|
267 |
char float64_is_signaling_nan( float64 );
|
268 |
|
269 |
INLINE float64 float64_abs(float64 a) |
270 |
{ |
271 |
return fabs(a);
|
272 |
} |
273 |
|
274 |
INLINE float64 float64_chs(float64 a) |
275 |
{ |
276 |
return -a;
|
277 |
} |
278 |
|
279 |
#ifdef FLOATX80
|
280 |
|
281 |
/*----------------------------------------------------------------------------
|
282 |
| Software IEC/IEEE extended double-precision conversion routines.
|
283 |
*----------------------------------------------------------------------------*/
|
284 |
int floatx80_to_int32( floatx80 STATUS_PARAM );
|
285 |
int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
|
286 |
int64_t floatx80_to_int64( floatx80 STATUS_PARAM); |
287 |
int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM); |
288 |
float32 floatx80_to_float32( floatx80 STATUS_PARAM ); |
289 |
float64 floatx80_to_float64( floatx80 STATUS_PARAM ); |
290 |
#ifdef FLOAT128
|
291 |
float128 floatx80_to_float128( floatx80 STATUS_PARAM ); |
292 |
#endif
|
293 |
|
294 |
/*----------------------------------------------------------------------------
|
295 |
| Software IEC/IEEE extended double-precision operations.
|
296 |
*----------------------------------------------------------------------------*/
|
297 |
floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); |
298 |
INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM) |
299 |
{ |
300 |
return a + b;
|
301 |
} |
302 |
INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM) |
303 |
{ |
304 |
return a - b;
|
305 |
} |
306 |
INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM) |
307 |
{ |
308 |
return a * b;
|
309 |
} |
310 |
INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM) |
311 |
{ |
312 |
return a / b;
|
313 |
} |
314 |
floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); |
315 |
floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); |
316 |
INLINE char floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
|
317 |
{ |
318 |
return a == b;
|
319 |
} |
320 |
INLINE char floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
|
321 |
{ |
322 |
return a <= b;
|
323 |
} |
324 |
INLINE char floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
|
325 |
{ |
326 |
return a < b;
|
327 |
} |
328 |
INLINE char floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
|
329 |
{ |
330 |
return a <= b && a >= b;
|
331 |
} |
332 |
INLINE char floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
|
333 |
{ |
334 |
return islessequal(a, b);
|
335 |
} |
336 |
INLINE char floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
|
337 |
{ |
338 |
return isless(a, b);
|
339 |
|
340 |
} |
341 |
INLINE char floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
|
342 |
{ |
343 |
return isunordered(a, b);
|
344 |
|
345 |
} |
346 |
char floatx80_compare( floatx80, floatx80 STATUS_PARAM );
|
347 |
char floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
|
348 |
char floatx80_is_signaling_nan( floatx80 );
|
349 |
|
350 |
INLINE floatx80 floatx80_abs(floatx80 a) |
351 |
{ |
352 |
return fabsl(a);
|
353 |
} |
354 |
|
355 |
INLINE floatx80 floatx80_chs(floatx80 a) |
356 |
{ |
357 |
return -a;
|
358 |
} |
359 |
#endif
|