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Commit | Line | Data |
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8d725fac AF |
1 | /* |
2 | * QEMU float support | |
3 | * | |
4 | * Derived from SoftFloat. | |
5 | */ | |
6 | ||
158142c2 FB |
7 | /*============================================================================ |
8 | ||
9 | This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic | |
10 | Package, Release 2b. | |
11 | ||
12 | Written by John R. Hauser. This work was made possible in part by the | |
13 | International Computer Science Institute, located at Suite 600, 1947 Center | |
14 | Street, Berkeley, California 94704. Funding was partially provided by the | |
15 | National Science Foundation under grant MIP-9311980. The original version | |
16 | of this code was written as part of a project to build a fixed-point vector | |
17 | processor in collaboration with the University of California at Berkeley, | |
18 | overseen by Profs. Nelson Morgan and John Wawrzynek. More information | |
19 | is available through the Web page `http://www.cs.berkeley.edu/~jhauser/ | |
20 | arithmetic/SoftFloat.html'. | |
21 | ||
22 | THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort has | |
23 | been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES | |
24 | RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS | |
25 | AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES, | |
26 | COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE | |
27 | EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE | |
28 | INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR | |
29 | OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE. | |
30 | ||
31 | Derivative works are acceptable, even for commercial purposes, so long as | |
32 | (1) the source code for the derivative work includes prominent notice that | |
33 | the work is derivative, and (2) the source code includes prominent notice with | |
34 | these four paragraphs for those parts of this code that are retained. | |
35 | ||
36 | =============================================================================*/ | |
37 | ||
38 | #ifndef SOFTFLOAT_H | |
39 | #define SOFTFLOAT_H | |
40 | ||
75b5a697 | 41 | #if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH) |
0475a5ca TS |
42 | #include <sunmath.h> |
43 | #endif | |
44 | ||
158142c2 FB |
45 | #include <inttypes.h> |
46 | #include "config.h" | |
47 | ||
48 | /*---------------------------------------------------------------------------- | |
49 | | Each of the following `typedef's defines the most convenient type that holds | |
50 | | integers of at least as many bits as specified. For example, `uint8' should | |
51 | | be the most convenient type that can hold unsigned integers of as many as | |
52 | | 8 bits. The `flag' type must be able to hold either a 0 or 1. For most | |
53 | | implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed | |
54 | | to the same as `int'. | |
55 | *----------------------------------------------------------------------------*/ | |
750afe93 | 56 | typedef uint8_t flag; |
158142c2 FB |
57 | typedef uint8_t uint8; |
58 | typedef int8_t int8; | |
b29fe3ed | 59 | #ifndef _AIX |
158142c2 FB |
60 | typedef int uint16; |
61 | typedef int int16; | |
b29fe3ed | 62 | #endif |
158142c2 FB |
63 | typedef unsigned int uint32; |
64 | typedef signed int int32; | |
65 | typedef uint64_t uint64; | |
66 | typedef int64_t int64; | |
67 | ||
158142c2 FB |
68 | #define LIT64( a ) a##LL |
69 | #define INLINE static inline | |
70 | ||
8559666d CL |
71 | #if defined(TARGET_MIPS) || defined(TARGET_SH4) |
72 | #define SNAN_BIT_IS_ONE 1 | |
73 | #else | |
74 | #define SNAN_BIT_IS_ONE 0 | |
75 | #endif | |
76 | ||
158142c2 FB |
77 | /*---------------------------------------------------------------------------- |
78 | | The macro `FLOATX80' must be defined to enable the extended double-precision | |
79 | | floating-point format `floatx80'. If this macro is not defined, the | |
80 | | `floatx80' type will not be defined, and none of the functions that either | |
81 | | input or output the `floatx80' type will be defined. The same applies to | |
82 | | the `FLOAT128' macro and the quadruple-precision format `float128'. | |
83 | *----------------------------------------------------------------------------*/ | |
84 | #ifdef CONFIG_SOFTFLOAT | |
85 | /* bit exact soft float support */ | |
86 | #define FLOATX80 | |
87 | #define FLOAT128 | |
88 | #else | |
89 | /* native float support */ | |
71e72a19 | 90 | #if (defined(__i386__) || defined(__x86_64__)) && !defined(CONFIG_BSD) |
158142c2 FB |
91 | #define FLOATX80 |
92 | #endif | |
93 | #endif /* !CONFIG_SOFTFLOAT */ | |
94 | ||
95 | #define STATUS_PARAM , float_status *status | |
96 | #define STATUS(field) status->field | |
97 | #define STATUS_VAR , status | |
98 | ||
1d6bda35 FB |
99 | /*---------------------------------------------------------------------------- |
100 | | Software IEC/IEEE floating-point ordering relations | |
101 | *----------------------------------------------------------------------------*/ | |
102 | enum { | |
103 | float_relation_less = -1, | |
104 | float_relation_equal = 0, | |
105 | float_relation_greater = 1, | |
106 | float_relation_unordered = 2 | |
107 | }; | |
108 | ||
158142c2 FB |
109 | #ifdef CONFIG_SOFTFLOAT |
110 | /*---------------------------------------------------------------------------- | |
111 | | Software IEC/IEEE floating-point types. | |
112 | *----------------------------------------------------------------------------*/ | |
f090c9d4 PB |
113 | /* Use structures for soft-float types. This prevents accidentally mixing |
114 | them with native int/float types. A sufficiently clever compiler and | |
115 | sane ABI should be able to see though these structs. However | |
116 | x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */ | |
117 | //#define USE_SOFTFLOAT_STRUCT_TYPES | |
118 | #ifdef USE_SOFTFLOAT_STRUCT_TYPES | |
bb4d4bb3 PM |
119 | typedef struct { |
120 | uint16_t v; | |
121 | } float16; | |
122 | #define float16_val(x) (((float16)(x)).v) | |
123 | #define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; }) | |
d5138cf4 | 124 | #define const_float16(x) { x } |
f090c9d4 PB |
125 | typedef struct { |
126 | uint32_t v; | |
127 | } float32; | |
128 | /* The cast ensures an error if the wrong type is passed. */ | |
129 | #define float32_val(x) (((float32)(x)).v) | |
130 | #define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; }) | |
d5138cf4 | 131 | #define const_float32(x) { x } |
f090c9d4 PB |
132 | typedef struct { |
133 | uint64_t v; | |
134 | } float64; | |
135 | #define float64_val(x) (((float64)(x)).v) | |
136 | #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; }) | |
d5138cf4 | 137 | #define const_float64(x) { x } |
f090c9d4 | 138 | #else |
bb4d4bb3 | 139 | typedef uint16_t float16; |
158142c2 FB |
140 | typedef uint32_t float32; |
141 | typedef uint64_t float64; | |
bb4d4bb3 | 142 | #define float16_val(x) (x) |
f090c9d4 PB |
143 | #define float32_val(x) (x) |
144 | #define float64_val(x) (x) | |
bb4d4bb3 | 145 | #define make_float16(x) (x) |
f090c9d4 PB |
146 | #define make_float32(x) (x) |
147 | #define make_float64(x) (x) | |
d5138cf4 PM |
148 | #define const_float16(x) (x) |
149 | #define const_float32(x) (x) | |
150 | #define const_float64(x) (x) | |
f090c9d4 | 151 | #endif |
158142c2 FB |
152 | #ifdef FLOATX80 |
153 | typedef struct { | |
154 | uint64_t low; | |
155 | uint16_t high; | |
156 | } floatx80; | |
157 | #endif | |
158 | #ifdef FLOAT128 | |
159 | typedef struct { | |
e2542fe2 | 160 | #ifdef HOST_WORDS_BIGENDIAN |
158142c2 FB |
161 | uint64_t high, low; |
162 | #else | |
163 | uint64_t low, high; | |
164 | #endif | |
165 | } float128; | |
166 | #endif | |
167 | ||
168 | /*---------------------------------------------------------------------------- | |
169 | | Software IEC/IEEE floating-point underflow tininess-detection mode. | |
170 | *----------------------------------------------------------------------------*/ | |
171 | enum { | |
172 | float_tininess_after_rounding = 0, | |
173 | float_tininess_before_rounding = 1 | |
174 | }; | |
175 | ||
176 | /*---------------------------------------------------------------------------- | |
177 | | Software IEC/IEEE floating-point rounding mode. | |
178 | *----------------------------------------------------------------------------*/ | |
179 | enum { | |
180 | float_round_nearest_even = 0, | |
181 | float_round_down = 1, | |
182 | float_round_up = 2, | |
183 | float_round_to_zero = 3 | |
184 | }; | |
185 | ||
186 | /*---------------------------------------------------------------------------- | |
187 | | Software IEC/IEEE floating-point exception flags. | |
188 | *----------------------------------------------------------------------------*/ | |
189 | enum { | |
190 | float_flag_invalid = 1, | |
191 | float_flag_divbyzero = 4, | |
192 | float_flag_overflow = 8, | |
193 | float_flag_underflow = 16, | |
37d18660 PM |
194 | float_flag_inexact = 32, |
195 | float_flag_input_denormal = 64 | |
158142c2 FB |
196 | }; |
197 | ||
198 | typedef struct float_status { | |
199 | signed char float_detect_tininess; | |
200 | signed char float_rounding_mode; | |
201 | signed char float_exception_flags; | |
202 | #ifdef FLOATX80 | |
203 | signed char floatx80_rounding_precision; | |
204 | #endif | |
37d18660 | 205 | /* should denormalised results go to zero and set the inexact flag? */ |
fe76d976 | 206 | flag flush_to_zero; |
37d18660 PM |
207 | /* should denormalised inputs go to zero and set the input_denormal flag? */ |
208 | flag flush_inputs_to_zero; | |
5c7908ed | 209 | flag default_nan_mode; |
158142c2 FB |
210 | } float_status; |
211 | ||
212 | void set_float_rounding_mode(int val STATUS_PARAM); | |
1d6bda35 | 213 | void set_float_exception_flags(int val STATUS_PARAM); |
fe76d976 PB |
214 | INLINE void set_flush_to_zero(flag val STATUS_PARAM) |
215 | { | |
216 | STATUS(flush_to_zero) = val; | |
217 | } | |
37d18660 PM |
218 | INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM) |
219 | { | |
220 | STATUS(flush_inputs_to_zero) = val; | |
221 | } | |
5c7908ed PB |
222 | INLINE void set_default_nan_mode(flag val STATUS_PARAM) |
223 | { | |
224 | STATUS(default_nan_mode) = val; | |
225 | } | |
1d6bda35 FB |
226 | INLINE int get_float_exception_flags(float_status *status) |
227 | { | |
228 | return STATUS(float_exception_flags); | |
229 | } | |
158142c2 FB |
230 | #ifdef FLOATX80 |
231 | void set_floatx80_rounding_precision(int val STATUS_PARAM); | |
232 | #endif | |
233 | ||
234 | /*---------------------------------------------------------------------------- | |
235 | | Routine to raise any or all of the software IEC/IEEE floating-point | |
236 | | exception flags. | |
237 | *----------------------------------------------------------------------------*/ | |
ec530c81 | 238 | void float_raise( int8 flags STATUS_PARAM); |
158142c2 FB |
239 | |
240 | /*---------------------------------------------------------------------------- | |
241 | | Software IEC/IEEE integer-to-floating-point conversion routines. | |
242 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
243 | float32 int32_to_float32( int32 STATUS_PARAM ); |
244 | float64 int32_to_float64( int32 STATUS_PARAM ); | |
1d6bda35 FB |
245 | float32 uint32_to_float32( unsigned int STATUS_PARAM ); |
246 | float64 uint32_to_float64( unsigned int STATUS_PARAM ); | |
158142c2 | 247 | #ifdef FLOATX80 |
87b8cc3c | 248 | floatx80 int32_to_floatx80( int32 STATUS_PARAM ); |
158142c2 FB |
249 | #endif |
250 | #ifdef FLOAT128 | |
87b8cc3c | 251 | float128 int32_to_float128( int32 STATUS_PARAM ); |
158142c2 | 252 | #endif |
87b8cc3c AF |
253 | float32 int64_to_float32( int64 STATUS_PARAM ); |
254 | float32 uint64_to_float32( uint64 STATUS_PARAM ); | |
255 | float64 int64_to_float64( int64 STATUS_PARAM ); | |
256 | float64 uint64_to_float64( uint64 STATUS_PARAM ); | |
158142c2 | 257 | #ifdef FLOATX80 |
87b8cc3c | 258 | floatx80 int64_to_floatx80( int64 STATUS_PARAM ); |
158142c2 FB |
259 | #endif |
260 | #ifdef FLOAT128 | |
87b8cc3c | 261 | float128 int64_to_float128( int64 STATUS_PARAM ); |
158142c2 FB |
262 | #endif |
263 | ||
60011498 PB |
264 | /*---------------------------------------------------------------------------- |
265 | | Software half-precision conversion routines. | |
266 | *----------------------------------------------------------------------------*/ | |
bb4d4bb3 PM |
267 | float16 float32_to_float16( float32, flag STATUS_PARAM ); |
268 | float32 float16_to_float32( float16, flag STATUS_PARAM ); | |
269 | ||
270 | /*---------------------------------------------------------------------------- | |
271 | | Software half-precision operations. | |
272 | *----------------------------------------------------------------------------*/ | |
273 | int float16_is_quiet_nan( float16 ); | |
274 | int float16_is_signaling_nan( float16 ); | |
275 | float16 float16_maybe_silence_nan( float16 ); | |
60011498 | 276 | |
8559666d CL |
277 | /*---------------------------------------------------------------------------- |
278 | | The pattern for a default generated half-precision NaN. | |
279 | *----------------------------------------------------------------------------*/ | |
280 | #if defined(TARGET_ARM) | |
281 | #define float16_default_nan make_float16(0x7E00) | |
282 | #elif SNAN_BIT_IS_ONE | |
283 | #define float16_default_nan make_float16(0x7DFF) | |
284 | #else | |
285 | #define float16_default_nan make_float16(0xFE00) | |
286 | #endif | |
287 | ||
158142c2 FB |
288 | /*---------------------------------------------------------------------------- |
289 | | Software IEC/IEEE single-precision conversion routines. | |
290 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 291 | int16 float32_to_int16_round_to_zero( float32 STATUS_PARAM ); |
cbcef455 | 292 | unsigned int float32_to_uint16_round_to_zero( float32 STATUS_PARAM ); |
87b8cc3c AF |
293 | int32 float32_to_int32( float32 STATUS_PARAM ); |
294 | int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM ); | |
295 | uint32 float32_to_uint32( float32 STATUS_PARAM ); | |
296 | uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM ); | |
297 | int64 float32_to_int64( float32 STATUS_PARAM ); | |
298 | int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM ); | |
158142c2 FB |
299 | float64 float32_to_float64( float32 STATUS_PARAM ); |
300 | #ifdef FLOATX80 | |
301 | floatx80 float32_to_floatx80( float32 STATUS_PARAM ); | |
302 | #endif | |
303 | #ifdef FLOAT128 | |
304 | float128 float32_to_float128( float32 STATUS_PARAM ); | |
305 | #endif | |
306 | ||
307 | /*---------------------------------------------------------------------------- | |
308 | | Software IEC/IEEE single-precision operations. | |
309 | *----------------------------------------------------------------------------*/ | |
310 | float32 float32_round_to_int( float32 STATUS_PARAM ); | |
311 | float32 float32_add( float32, float32 STATUS_PARAM ); | |
312 | float32 float32_sub( float32, float32 STATUS_PARAM ); | |
313 | float32 float32_mul( float32, float32 STATUS_PARAM ); | |
314 | float32 float32_div( float32, float32 STATUS_PARAM ); | |
315 | float32 float32_rem( float32, float32 STATUS_PARAM ); | |
316 | float32 float32_sqrt( float32 STATUS_PARAM ); | |
8229c991 | 317 | float32 float32_exp2( float32 STATUS_PARAM ); |
374dfc33 | 318 | float32 float32_log2( float32 STATUS_PARAM ); |
750afe93 FB |
319 | int float32_eq( float32, float32 STATUS_PARAM ); |
320 | int float32_le( float32, float32 STATUS_PARAM ); | |
321 | int float32_lt( float32, float32 STATUS_PARAM ); | |
322 | int float32_eq_signaling( float32, float32 STATUS_PARAM ); | |
323 | int float32_le_quiet( float32, float32 STATUS_PARAM ); | |
324 | int float32_lt_quiet( float32, float32 STATUS_PARAM ); | |
325 | int float32_compare( float32, float32 STATUS_PARAM ); | |
326 | int float32_compare_quiet( float32, float32 STATUS_PARAM ); | |
18569871 | 327 | int float32_is_quiet_nan( float32 ); |
750afe93 | 328 | int float32_is_signaling_nan( float32 ); |
b408dbde | 329 | float32 float32_maybe_silence_nan( float32 ); |
9ee6e8bb | 330 | float32 float32_scalbn( float32, int STATUS_PARAM ); |
158142c2 | 331 | |
1d6bda35 FB |
332 | INLINE float32 float32_abs(float32 a) |
333 | { | |
37d18660 PM |
334 | /* Note that abs does *not* handle NaN specially, nor does |
335 | * it flush denormal inputs to zero. | |
336 | */ | |
f090c9d4 | 337 | return make_float32(float32_val(a) & 0x7fffffff); |
1d6bda35 FB |
338 | } |
339 | ||
340 | INLINE float32 float32_chs(float32 a) | |
341 | { | |
37d18660 PM |
342 | /* Note that chs does *not* handle NaN specially, nor does |
343 | * it flush denormal inputs to zero. | |
344 | */ | |
f090c9d4 | 345 | return make_float32(float32_val(a) ^ 0x80000000); |
1d6bda35 FB |
346 | } |
347 | ||
c52ab6f5 AJ |
348 | INLINE int float32_is_infinity(float32 a) |
349 | { | |
dadd71a7 | 350 | return (float32_val(a) & 0x7fffffff) == 0x7f800000; |
c52ab6f5 AJ |
351 | } |
352 | ||
353 | INLINE int float32_is_neg(float32 a) | |
354 | { | |
355 | return float32_val(a) >> 31; | |
356 | } | |
357 | ||
358 | INLINE int float32_is_zero(float32 a) | |
359 | { | |
360 | return (float32_val(a) & 0x7fffffff) == 0; | |
361 | } | |
362 | ||
21d6ebde PM |
363 | INLINE int float32_is_any_nan(float32 a) |
364 | { | |
365 | return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); | |
366 | } | |
367 | ||
6f3300ad PM |
368 | INLINE int float32_is_zero_or_denormal(float32 a) |
369 | { | |
370 | return (float32_val(a) & 0x7f800000) == 0; | |
371 | } | |
372 | ||
c30fe7df CL |
373 | INLINE float32 float32_set_sign(float32 a, int sign) |
374 | { | |
375 | return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31)); | |
376 | } | |
377 | ||
f090c9d4 | 378 | #define float32_zero make_float32(0) |
196cfc89 | 379 | #define float32_one make_float32(0x3f800000) |
8229c991 | 380 | #define float32_ln2 make_float32(0x3f317218) |
c30fe7df CL |
381 | #define float32_half make_float32(0x3f000000) |
382 | #define float32_infinity make_float32(0x7f800000) | |
f090c9d4 | 383 | |
8559666d CL |
384 | |
385 | /*---------------------------------------------------------------------------- | |
386 | | The pattern for a default generated single-precision NaN. | |
387 | *----------------------------------------------------------------------------*/ | |
388 | #if defined(TARGET_SPARC) | |
389 | #define float32_default_nan make_float32(0x7FFFFFFF) | |
390 | #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) | |
391 | #define float32_default_nan make_float32(0x7FC00000) | |
392 | #elif SNAN_BIT_IS_ONE | |
393 | #define float32_default_nan make_float32(0x7FBFFFFF) | |
394 | #else | |
395 | #define float32_default_nan make_float32(0xFFC00000) | |
396 | #endif | |
397 | ||
158142c2 FB |
398 | /*---------------------------------------------------------------------------- |
399 | | Software IEC/IEEE double-precision conversion routines. | |
400 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 401 | int16 float64_to_int16_round_to_zero( float64 STATUS_PARAM ); |
cbcef455 | 402 | unsigned int float64_to_uint16_round_to_zero( float64 STATUS_PARAM ); |
87b8cc3c AF |
403 | int32 float64_to_int32( float64 STATUS_PARAM ); |
404 | int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM ); | |
405 | uint32 float64_to_uint32( float64 STATUS_PARAM ); | |
406 | uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); | |
407 | int64 float64_to_int64( float64 STATUS_PARAM ); | |
408 | int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); | |
409 | uint64 float64_to_uint64 (float64 a STATUS_PARAM); | |
410 | uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); | |
158142c2 FB |
411 | float32 float64_to_float32( float64 STATUS_PARAM ); |
412 | #ifdef FLOATX80 | |
413 | floatx80 float64_to_floatx80( float64 STATUS_PARAM ); | |
414 | #endif | |
415 | #ifdef FLOAT128 | |
416 | float128 float64_to_float128( float64 STATUS_PARAM ); | |
417 | #endif | |
418 | ||
419 | /*---------------------------------------------------------------------------- | |
420 | | Software IEC/IEEE double-precision operations. | |
421 | *----------------------------------------------------------------------------*/ | |
422 | float64 float64_round_to_int( float64 STATUS_PARAM ); | |
e6e5906b | 423 | float64 float64_trunc_to_int( float64 STATUS_PARAM ); |
158142c2 FB |
424 | float64 float64_add( float64, float64 STATUS_PARAM ); |
425 | float64 float64_sub( float64, float64 STATUS_PARAM ); | |
426 | float64 float64_mul( float64, float64 STATUS_PARAM ); | |
427 | float64 float64_div( float64, float64 STATUS_PARAM ); | |
428 | float64 float64_rem( float64, float64 STATUS_PARAM ); | |
429 | float64 float64_sqrt( float64 STATUS_PARAM ); | |
374dfc33 | 430 | float64 float64_log2( float64 STATUS_PARAM ); |
750afe93 FB |
431 | int float64_eq( float64, float64 STATUS_PARAM ); |
432 | int float64_le( float64, float64 STATUS_PARAM ); | |
433 | int float64_lt( float64, float64 STATUS_PARAM ); | |
434 | int float64_eq_signaling( float64, float64 STATUS_PARAM ); | |
435 | int float64_le_quiet( float64, float64 STATUS_PARAM ); | |
436 | int float64_lt_quiet( float64, float64 STATUS_PARAM ); | |
437 | int float64_compare( float64, float64 STATUS_PARAM ); | |
438 | int float64_compare_quiet( float64, float64 STATUS_PARAM ); | |
18569871 | 439 | int float64_is_quiet_nan( float64 a ); |
750afe93 | 440 | int float64_is_signaling_nan( float64 ); |
b408dbde | 441 | float64 float64_maybe_silence_nan( float64 ); |
9ee6e8bb | 442 | float64 float64_scalbn( float64, int STATUS_PARAM ); |
158142c2 | 443 | |
1d6bda35 FB |
444 | INLINE float64 float64_abs(float64 a) |
445 | { | |
37d18660 PM |
446 | /* Note that abs does *not* handle NaN specially, nor does |
447 | * it flush denormal inputs to zero. | |
448 | */ | |
f090c9d4 | 449 | return make_float64(float64_val(a) & 0x7fffffffffffffffLL); |
1d6bda35 FB |
450 | } |
451 | ||
452 | INLINE float64 float64_chs(float64 a) | |
453 | { | |
37d18660 PM |
454 | /* Note that chs does *not* handle NaN specially, nor does |
455 | * it flush denormal inputs to zero. | |
456 | */ | |
f090c9d4 | 457 | return make_float64(float64_val(a) ^ 0x8000000000000000LL); |
1d6bda35 FB |
458 | } |
459 | ||
c52ab6f5 AJ |
460 | INLINE int float64_is_infinity(float64 a) |
461 | { | |
462 | return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; | |
463 | } | |
464 | ||
465 | INLINE int float64_is_neg(float64 a) | |
466 | { | |
467 | return float64_val(a) >> 63; | |
468 | } | |
469 | ||
470 | INLINE int float64_is_zero(float64 a) | |
471 | { | |
472 | return (float64_val(a) & 0x7fffffffffffffffLL) == 0; | |
473 | } | |
474 | ||
21d6ebde PM |
475 | INLINE int float64_is_any_nan(float64 a) |
476 | { | |
477 | return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); | |
478 | } | |
479 | ||
c30fe7df CL |
480 | INLINE float64 float64_set_sign(float64 a, int sign) |
481 | { | |
482 | return make_float64((float64_val(a) & 0x7fffffffffffffffULL) | |
483 | | ((int64_t)sign << 63)); | |
484 | } | |
485 | ||
f090c9d4 | 486 | #define float64_zero make_float64(0) |
196cfc89 | 487 | #define float64_one make_float64(0x3ff0000000000000LL) |
8229c991 | 488 | #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) |
c30fe7df CL |
489 | #define float64_half make_float64(0x3fe0000000000000LL) |
490 | #define float64_infinity make_float64(0x7ff0000000000000LL) | |
f090c9d4 | 491 | |
8559666d CL |
492 | /*---------------------------------------------------------------------------- |
493 | | The pattern for a default generated double-precision NaN. | |
494 | *----------------------------------------------------------------------------*/ | |
495 | #if defined(TARGET_SPARC) | |
496 | #define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF )) | |
497 | #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) | |
498 | #define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 )) | |
499 | #elif SNAN_BIT_IS_ONE | |
500 | #define float64_default_nan make_float64(LIT64( 0x7FF7FFFFFFFFFFFF )) | |
501 | #else | |
502 | #define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 )) | |
503 | #endif | |
504 | ||
158142c2 FB |
505 | #ifdef FLOATX80 |
506 | ||
507 | /*---------------------------------------------------------------------------- | |
508 | | Software IEC/IEEE extended double-precision conversion routines. | |
509 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
510 | int32 floatx80_to_int32( floatx80 STATUS_PARAM ); |
511 | int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); | |
512 | int64 floatx80_to_int64( floatx80 STATUS_PARAM ); | |
513 | int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); | |
158142c2 FB |
514 | float32 floatx80_to_float32( floatx80 STATUS_PARAM ); |
515 | float64 floatx80_to_float64( floatx80 STATUS_PARAM ); | |
516 | #ifdef FLOAT128 | |
517 | float128 floatx80_to_float128( floatx80 STATUS_PARAM ); | |
518 | #endif | |
519 | ||
520 | /*---------------------------------------------------------------------------- | |
521 | | Software IEC/IEEE extended double-precision operations. | |
522 | *----------------------------------------------------------------------------*/ | |
523 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); | |
524 | floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM ); | |
525 | floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM ); | |
526 | floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM ); | |
527 | floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM ); | |
528 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); | |
529 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); | |
750afe93 FB |
530 | int floatx80_eq( floatx80, floatx80 STATUS_PARAM ); |
531 | int floatx80_le( floatx80, floatx80 STATUS_PARAM ); | |
532 | int floatx80_lt( floatx80, floatx80 STATUS_PARAM ); | |
533 | int floatx80_eq_signaling( floatx80, floatx80 STATUS_PARAM ); | |
534 | int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); | |
535 | int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); | |
18569871 | 536 | int floatx80_is_quiet_nan( floatx80 ); |
750afe93 | 537 | int floatx80_is_signaling_nan( floatx80 ); |
f6a7d92a | 538 | floatx80 floatx80_maybe_silence_nan( floatx80 ); |
9ee6e8bb | 539 | floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); |
158142c2 | 540 | |
1d6bda35 FB |
541 | INLINE floatx80 floatx80_abs(floatx80 a) |
542 | { | |
543 | a.high &= 0x7fff; | |
544 | return a; | |
545 | } | |
546 | ||
547 | INLINE floatx80 floatx80_chs(floatx80 a) | |
548 | { | |
549 | a.high ^= 0x8000; | |
550 | return a; | |
551 | } | |
552 | ||
c52ab6f5 AJ |
553 | INLINE int floatx80_is_infinity(floatx80 a) |
554 | { | |
555 | return (a.high & 0x7fff) == 0x7fff && a.low == 0; | |
556 | } | |
557 | ||
558 | INLINE int floatx80_is_neg(floatx80 a) | |
559 | { | |
560 | return a.high >> 15; | |
561 | } | |
562 | ||
563 | INLINE int floatx80_is_zero(floatx80 a) | |
564 | { | |
565 | return (a.high & 0x7fff) == 0 && a.low == 0; | |
566 | } | |
567 | ||
2bed652f PM |
568 | INLINE int floatx80_is_any_nan(floatx80 a) |
569 | { | |
570 | return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); | |
571 | } | |
572 | ||
8559666d CL |
573 | /*---------------------------------------------------------------------------- |
574 | | The pattern for a default generated extended double-precision NaN. The | |
575 | | `high' and `low' values hold the most- and least-significant bits, | |
576 | | respectively. | |
577 | *----------------------------------------------------------------------------*/ | |
578 | #if SNAN_BIT_IS_ONE | |
579 | #define floatx80_default_nan_high 0x7FFF | |
580 | #define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF ) | |
581 | #else | |
582 | #define floatx80_default_nan_high 0xFFFF | |
583 | #define floatx80_default_nan_low LIT64( 0xC000000000000000 ) | |
584 | #endif | |
585 | ||
158142c2 FB |
586 | #endif |
587 | ||
588 | #ifdef FLOAT128 | |
589 | ||
590 | /*---------------------------------------------------------------------------- | |
591 | | Software IEC/IEEE quadruple-precision conversion routines. | |
592 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
593 | int32 float128_to_int32( float128 STATUS_PARAM ); |
594 | int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM ); | |
595 | int64 float128_to_int64( float128 STATUS_PARAM ); | |
596 | int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); | |
158142c2 FB |
597 | float32 float128_to_float32( float128 STATUS_PARAM ); |
598 | float64 float128_to_float64( float128 STATUS_PARAM ); | |
599 | #ifdef FLOATX80 | |
600 | floatx80 float128_to_floatx80( float128 STATUS_PARAM ); | |
601 | #endif | |
602 | ||
603 | /*---------------------------------------------------------------------------- | |
604 | | Software IEC/IEEE quadruple-precision operations. | |
605 | *----------------------------------------------------------------------------*/ | |
606 | float128 float128_round_to_int( float128 STATUS_PARAM ); | |
607 | float128 float128_add( float128, float128 STATUS_PARAM ); | |
608 | float128 float128_sub( float128, float128 STATUS_PARAM ); | |
609 | float128 float128_mul( float128, float128 STATUS_PARAM ); | |
610 | float128 float128_div( float128, float128 STATUS_PARAM ); | |
611 | float128 float128_rem( float128, float128 STATUS_PARAM ); | |
612 | float128 float128_sqrt( float128 STATUS_PARAM ); | |
750afe93 FB |
613 | int float128_eq( float128, float128 STATUS_PARAM ); |
614 | int float128_le( float128, float128 STATUS_PARAM ); | |
615 | int float128_lt( float128, float128 STATUS_PARAM ); | |
616 | int float128_eq_signaling( float128, float128 STATUS_PARAM ); | |
617 | int float128_le_quiet( float128, float128 STATUS_PARAM ); | |
618 | int float128_lt_quiet( float128, float128 STATUS_PARAM ); | |
1f587329 BS |
619 | int float128_compare( float128, float128 STATUS_PARAM ); |
620 | int float128_compare_quiet( float128, float128 STATUS_PARAM ); | |
18569871 | 621 | int float128_is_quiet_nan( float128 ); |
750afe93 | 622 | int float128_is_signaling_nan( float128 ); |
f6a7d92a | 623 | float128 float128_maybe_silence_nan( float128 ); |
9ee6e8bb | 624 | float128 float128_scalbn( float128, int STATUS_PARAM ); |
158142c2 | 625 | |
1d6bda35 FB |
626 | INLINE float128 float128_abs(float128 a) |
627 | { | |
628 | a.high &= 0x7fffffffffffffffLL; | |
629 | return a; | |
630 | } | |
631 | ||
632 | INLINE float128 float128_chs(float128 a) | |
633 | { | |
634 | a.high ^= 0x8000000000000000LL; | |
635 | return a; | |
636 | } | |
637 | ||
c52ab6f5 AJ |
638 | INLINE int float128_is_infinity(float128 a) |
639 | { | |
640 | return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; | |
641 | } | |
642 | ||
643 | INLINE int float128_is_neg(float128 a) | |
644 | { | |
645 | return a.high >> 63; | |
646 | } | |
647 | ||
648 | INLINE int float128_is_zero(float128 a) | |
649 | { | |
650 | return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; | |
651 | } | |
652 | ||
2bed652f PM |
653 | INLINE int float128_is_any_nan(float128 a) |
654 | { | |
655 | return ((a.high >> 48) & 0x7fff) == 0x7fff && | |
656 | ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); | |
657 | } | |
658 | ||
8559666d CL |
659 | /*---------------------------------------------------------------------------- |
660 | | The pattern for a default generated quadruple-precision NaN. The `high' and | |
661 | | `low' values hold the most- and least-significant bits, respectively. | |
662 | *----------------------------------------------------------------------------*/ | |
663 | #if SNAN_BIT_IS_ONE | |
664 | #define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF ) | |
665 | #define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF ) | |
666 | #else | |
667 | #define float128_default_nan_high LIT64( 0xFFFF800000000000 ) | |
668 | #define float128_default_nan_low LIT64( 0x0000000000000000 ) | |
669 | #endif | |
670 | ||
158142c2 FB |
671 | #endif |
672 | ||
673 | #else /* CONFIG_SOFTFLOAT */ | |
674 | ||
675 | #include "softfloat-native.h" | |
676 | ||
677 | #endif /* !CONFIG_SOFTFLOAT */ | |
678 | ||
679 | #endif /* !SOFTFLOAT_H */ |