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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 | ||
d2fbca94 | 71 | #if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32) |
8559666d CL |
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; | |
f3218a8d | 157 | #define make_floatx80(exp, mant) ((floatx80) { mant, exp }) |
158142c2 FB |
158 | #endif |
159 | #ifdef FLOAT128 | |
160 | typedef struct { | |
e2542fe2 | 161 | #ifdef HOST_WORDS_BIGENDIAN |
158142c2 FB |
162 | uint64_t high, low; |
163 | #else | |
164 | uint64_t low, high; | |
165 | #endif | |
166 | } float128; | |
167 | #endif | |
168 | ||
169 | /*---------------------------------------------------------------------------- | |
170 | | Software IEC/IEEE floating-point underflow tininess-detection mode. | |
171 | *----------------------------------------------------------------------------*/ | |
172 | enum { | |
173 | float_tininess_after_rounding = 0, | |
174 | float_tininess_before_rounding = 1 | |
175 | }; | |
176 | ||
177 | /*---------------------------------------------------------------------------- | |
178 | | Software IEC/IEEE floating-point rounding mode. | |
179 | *----------------------------------------------------------------------------*/ | |
180 | enum { | |
181 | float_round_nearest_even = 0, | |
182 | float_round_down = 1, | |
183 | float_round_up = 2, | |
184 | float_round_to_zero = 3 | |
185 | }; | |
186 | ||
187 | /*---------------------------------------------------------------------------- | |
188 | | Software IEC/IEEE floating-point exception flags. | |
189 | *----------------------------------------------------------------------------*/ | |
190 | enum { | |
191 | float_flag_invalid = 1, | |
192 | float_flag_divbyzero = 4, | |
193 | float_flag_overflow = 8, | |
194 | float_flag_underflow = 16, | |
37d18660 | 195 | float_flag_inexact = 32, |
e6afc87f PM |
196 | float_flag_input_denormal = 64, |
197 | float_flag_output_denormal = 128 | |
158142c2 FB |
198 | }; |
199 | ||
200 | typedef struct float_status { | |
201 | signed char float_detect_tininess; | |
202 | signed char float_rounding_mode; | |
203 | signed char float_exception_flags; | |
204 | #ifdef FLOATX80 | |
205 | signed char floatx80_rounding_precision; | |
206 | #endif | |
37d18660 | 207 | /* should denormalised results go to zero and set the inexact flag? */ |
fe76d976 | 208 | flag flush_to_zero; |
37d18660 PM |
209 | /* should denormalised inputs go to zero and set the input_denormal flag? */ |
210 | flag flush_inputs_to_zero; | |
5c7908ed | 211 | flag default_nan_mode; |
158142c2 FB |
212 | } float_status; |
213 | ||
214 | void set_float_rounding_mode(int val STATUS_PARAM); | |
1d6bda35 | 215 | void set_float_exception_flags(int val STATUS_PARAM); |
c29aca44 PM |
216 | INLINE void set_float_detect_tininess(int val STATUS_PARAM) |
217 | { | |
218 | STATUS(float_detect_tininess) = val; | |
219 | } | |
fe76d976 PB |
220 | INLINE void set_flush_to_zero(flag val STATUS_PARAM) |
221 | { | |
222 | STATUS(flush_to_zero) = val; | |
223 | } | |
37d18660 PM |
224 | INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM) |
225 | { | |
226 | STATUS(flush_inputs_to_zero) = val; | |
227 | } | |
5c7908ed PB |
228 | INLINE void set_default_nan_mode(flag val STATUS_PARAM) |
229 | { | |
230 | STATUS(default_nan_mode) = val; | |
231 | } | |
1d6bda35 FB |
232 | INLINE int get_float_exception_flags(float_status *status) |
233 | { | |
234 | return STATUS(float_exception_flags); | |
235 | } | |
158142c2 FB |
236 | #ifdef FLOATX80 |
237 | void set_floatx80_rounding_precision(int val STATUS_PARAM); | |
238 | #endif | |
239 | ||
240 | /*---------------------------------------------------------------------------- | |
241 | | Routine to raise any or all of the software IEC/IEEE floating-point | |
242 | | exception flags. | |
243 | *----------------------------------------------------------------------------*/ | |
ec530c81 | 244 | void float_raise( int8 flags STATUS_PARAM); |
158142c2 FB |
245 | |
246 | /*---------------------------------------------------------------------------- | |
247 | | Software IEC/IEEE integer-to-floating-point conversion routines. | |
248 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
249 | float32 int32_to_float32( int32 STATUS_PARAM ); |
250 | float64 int32_to_float64( int32 STATUS_PARAM ); | |
1d6bda35 FB |
251 | float32 uint32_to_float32( unsigned int STATUS_PARAM ); |
252 | float64 uint32_to_float64( unsigned int STATUS_PARAM ); | |
158142c2 | 253 | #ifdef FLOATX80 |
87b8cc3c | 254 | floatx80 int32_to_floatx80( int32 STATUS_PARAM ); |
158142c2 FB |
255 | #endif |
256 | #ifdef FLOAT128 | |
87b8cc3c | 257 | float128 int32_to_float128( int32 STATUS_PARAM ); |
158142c2 | 258 | #endif |
87b8cc3c AF |
259 | float32 int64_to_float32( int64 STATUS_PARAM ); |
260 | float32 uint64_to_float32( uint64 STATUS_PARAM ); | |
261 | float64 int64_to_float64( int64 STATUS_PARAM ); | |
262 | float64 uint64_to_float64( uint64 STATUS_PARAM ); | |
158142c2 | 263 | #ifdef FLOATX80 |
87b8cc3c | 264 | floatx80 int64_to_floatx80( int64 STATUS_PARAM ); |
158142c2 FB |
265 | #endif |
266 | #ifdef FLOAT128 | |
87b8cc3c | 267 | float128 int64_to_float128( int64 STATUS_PARAM ); |
158142c2 FB |
268 | #endif |
269 | ||
60011498 PB |
270 | /*---------------------------------------------------------------------------- |
271 | | Software half-precision conversion routines. | |
272 | *----------------------------------------------------------------------------*/ | |
bb4d4bb3 PM |
273 | float16 float32_to_float16( float32, flag STATUS_PARAM ); |
274 | float32 float16_to_float32( float16, flag STATUS_PARAM ); | |
275 | ||
276 | /*---------------------------------------------------------------------------- | |
277 | | Software half-precision operations. | |
278 | *----------------------------------------------------------------------------*/ | |
279 | int float16_is_quiet_nan( float16 ); | |
280 | int float16_is_signaling_nan( float16 ); | |
281 | float16 float16_maybe_silence_nan( float16 ); | |
60011498 | 282 | |
8559666d CL |
283 | /*---------------------------------------------------------------------------- |
284 | | The pattern for a default generated half-precision NaN. | |
285 | *----------------------------------------------------------------------------*/ | |
286 | #if defined(TARGET_ARM) | |
287 | #define float16_default_nan make_float16(0x7E00) | |
288 | #elif SNAN_BIT_IS_ONE | |
289 | #define float16_default_nan make_float16(0x7DFF) | |
290 | #else | |
291 | #define float16_default_nan make_float16(0xFE00) | |
292 | #endif | |
293 | ||
158142c2 FB |
294 | /*---------------------------------------------------------------------------- |
295 | | Software IEC/IEEE single-precision conversion routines. | |
296 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 297 | int16 float32_to_int16_round_to_zero( float32 STATUS_PARAM ); |
cbcef455 | 298 | unsigned int float32_to_uint16_round_to_zero( float32 STATUS_PARAM ); |
87b8cc3c AF |
299 | int32 float32_to_int32( float32 STATUS_PARAM ); |
300 | int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM ); | |
301 | uint32 float32_to_uint32( float32 STATUS_PARAM ); | |
302 | uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM ); | |
303 | int64 float32_to_int64( float32 STATUS_PARAM ); | |
304 | int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM ); | |
158142c2 FB |
305 | float64 float32_to_float64( float32 STATUS_PARAM ); |
306 | #ifdef FLOATX80 | |
307 | floatx80 float32_to_floatx80( float32 STATUS_PARAM ); | |
308 | #endif | |
309 | #ifdef FLOAT128 | |
310 | float128 float32_to_float128( float32 STATUS_PARAM ); | |
311 | #endif | |
312 | ||
313 | /*---------------------------------------------------------------------------- | |
314 | | Software IEC/IEEE single-precision operations. | |
315 | *----------------------------------------------------------------------------*/ | |
316 | float32 float32_round_to_int( float32 STATUS_PARAM ); | |
317 | float32 float32_add( float32, float32 STATUS_PARAM ); | |
318 | float32 float32_sub( float32, float32 STATUS_PARAM ); | |
319 | float32 float32_mul( float32, float32 STATUS_PARAM ); | |
320 | float32 float32_div( float32, float32 STATUS_PARAM ); | |
321 | float32 float32_rem( float32, float32 STATUS_PARAM ); | |
322 | float32 float32_sqrt( float32 STATUS_PARAM ); | |
8229c991 | 323 | float32 float32_exp2( float32 STATUS_PARAM ); |
374dfc33 | 324 | float32 float32_log2( float32 STATUS_PARAM ); |
b689362d | 325 | int float32_eq( float32, float32 STATUS_PARAM ); |
750afe93 FB |
326 | int float32_le( float32, float32 STATUS_PARAM ); |
327 | int float32_lt( float32, float32 STATUS_PARAM ); | |
67b7861d | 328 | int float32_unordered( float32, float32 STATUS_PARAM ); |
b689362d | 329 | int float32_eq_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
330 | int float32_le_quiet( float32, float32 STATUS_PARAM ); |
331 | int float32_lt_quiet( float32, float32 STATUS_PARAM ); | |
67b7861d | 332 | int float32_unordered_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
333 | int float32_compare( float32, float32 STATUS_PARAM ); |
334 | int float32_compare_quiet( float32, float32 STATUS_PARAM ); | |
274f1b04 PM |
335 | float32 float32_min(float32, float32 STATUS_PARAM); |
336 | float32 float32_max(float32, float32 STATUS_PARAM); | |
18569871 | 337 | int float32_is_quiet_nan( float32 ); |
750afe93 | 338 | int float32_is_signaling_nan( float32 ); |
b408dbde | 339 | float32 float32_maybe_silence_nan( float32 ); |
9ee6e8bb | 340 | float32 float32_scalbn( float32, int STATUS_PARAM ); |
158142c2 | 341 | |
1d6bda35 FB |
342 | INLINE float32 float32_abs(float32 a) |
343 | { | |
37d18660 PM |
344 | /* Note that abs does *not* handle NaN specially, nor does |
345 | * it flush denormal inputs to zero. | |
346 | */ | |
f090c9d4 | 347 | return make_float32(float32_val(a) & 0x7fffffff); |
1d6bda35 FB |
348 | } |
349 | ||
350 | INLINE float32 float32_chs(float32 a) | |
351 | { | |
37d18660 PM |
352 | /* Note that chs does *not* handle NaN specially, nor does |
353 | * it flush denormal inputs to zero. | |
354 | */ | |
f090c9d4 | 355 | return make_float32(float32_val(a) ^ 0x80000000); |
1d6bda35 FB |
356 | } |
357 | ||
c52ab6f5 AJ |
358 | INLINE int float32_is_infinity(float32 a) |
359 | { | |
dadd71a7 | 360 | return (float32_val(a) & 0x7fffffff) == 0x7f800000; |
c52ab6f5 AJ |
361 | } |
362 | ||
363 | INLINE int float32_is_neg(float32 a) | |
364 | { | |
365 | return float32_val(a) >> 31; | |
366 | } | |
367 | ||
368 | INLINE int float32_is_zero(float32 a) | |
369 | { | |
370 | return (float32_val(a) & 0x7fffffff) == 0; | |
371 | } | |
372 | ||
21d6ebde PM |
373 | INLINE int float32_is_any_nan(float32 a) |
374 | { | |
375 | return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); | |
376 | } | |
377 | ||
6f3300ad PM |
378 | INLINE int float32_is_zero_or_denormal(float32 a) |
379 | { | |
380 | return (float32_val(a) & 0x7f800000) == 0; | |
381 | } | |
382 | ||
c30fe7df CL |
383 | INLINE float32 float32_set_sign(float32 a, int sign) |
384 | { | |
385 | return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31)); | |
386 | } | |
387 | ||
f090c9d4 | 388 | #define float32_zero make_float32(0) |
196cfc89 | 389 | #define float32_one make_float32(0x3f800000) |
8229c991 | 390 | #define float32_ln2 make_float32(0x3f317218) |
c4b4c77a | 391 | #define float32_pi make_float32(0x40490fdb) |
c30fe7df CL |
392 | #define float32_half make_float32(0x3f000000) |
393 | #define float32_infinity make_float32(0x7f800000) | |
f090c9d4 | 394 | |
8559666d CL |
395 | |
396 | /*---------------------------------------------------------------------------- | |
397 | | The pattern for a default generated single-precision NaN. | |
398 | *----------------------------------------------------------------------------*/ | |
399 | #if defined(TARGET_SPARC) | |
400 | #define float32_default_nan make_float32(0x7FFFFFFF) | |
401 | #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) | |
402 | #define float32_default_nan make_float32(0x7FC00000) | |
403 | #elif SNAN_BIT_IS_ONE | |
404 | #define float32_default_nan make_float32(0x7FBFFFFF) | |
405 | #else | |
406 | #define float32_default_nan make_float32(0xFFC00000) | |
407 | #endif | |
408 | ||
158142c2 FB |
409 | /*---------------------------------------------------------------------------- |
410 | | Software IEC/IEEE double-precision conversion routines. | |
411 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 412 | int16 float64_to_int16_round_to_zero( float64 STATUS_PARAM ); |
cbcef455 | 413 | unsigned int float64_to_uint16_round_to_zero( float64 STATUS_PARAM ); |
87b8cc3c AF |
414 | int32 float64_to_int32( float64 STATUS_PARAM ); |
415 | int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM ); | |
416 | uint32 float64_to_uint32( float64 STATUS_PARAM ); | |
417 | uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); | |
418 | int64 float64_to_int64( float64 STATUS_PARAM ); | |
419 | int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); | |
420 | uint64 float64_to_uint64 (float64 a STATUS_PARAM); | |
421 | uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); | |
158142c2 FB |
422 | float32 float64_to_float32( float64 STATUS_PARAM ); |
423 | #ifdef FLOATX80 | |
424 | floatx80 float64_to_floatx80( float64 STATUS_PARAM ); | |
425 | #endif | |
426 | #ifdef FLOAT128 | |
427 | float128 float64_to_float128( float64 STATUS_PARAM ); | |
428 | #endif | |
429 | ||
430 | /*---------------------------------------------------------------------------- | |
431 | | Software IEC/IEEE double-precision operations. | |
432 | *----------------------------------------------------------------------------*/ | |
433 | float64 float64_round_to_int( float64 STATUS_PARAM ); | |
e6e5906b | 434 | float64 float64_trunc_to_int( float64 STATUS_PARAM ); |
158142c2 FB |
435 | float64 float64_add( float64, float64 STATUS_PARAM ); |
436 | float64 float64_sub( float64, float64 STATUS_PARAM ); | |
437 | float64 float64_mul( float64, float64 STATUS_PARAM ); | |
438 | float64 float64_div( float64, float64 STATUS_PARAM ); | |
439 | float64 float64_rem( float64, float64 STATUS_PARAM ); | |
440 | float64 float64_sqrt( float64 STATUS_PARAM ); | |
374dfc33 | 441 | float64 float64_log2( float64 STATUS_PARAM ); |
b689362d | 442 | int float64_eq( float64, float64 STATUS_PARAM ); |
750afe93 FB |
443 | int float64_le( float64, float64 STATUS_PARAM ); |
444 | int float64_lt( float64, float64 STATUS_PARAM ); | |
67b7861d | 445 | int float64_unordered( float64, float64 STATUS_PARAM ); |
b689362d | 446 | int float64_eq_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
447 | int float64_le_quiet( float64, float64 STATUS_PARAM ); |
448 | int float64_lt_quiet( float64, float64 STATUS_PARAM ); | |
67b7861d | 449 | int float64_unordered_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
450 | int float64_compare( float64, float64 STATUS_PARAM ); |
451 | int float64_compare_quiet( float64, float64 STATUS_PARAM ); | |
274f1b04 PM |
452 | float64 float64_min(float64, float64 STATUS_PARAM); |
453 | float64 float64_max(float64, float64 STATUS_PARAM); | |
18569871 | 454 | int float64_is_quiet_nan( float64 a ); |
750afe93 | 455 | int float64_is_signaling_nan( float64 ); |
b408dbde | 456 | float64 float64_maybe_silence_nan( float64 ); |
9ee6e8bb | 457 | float64 float64_scalbn( float64, int STATUS_PARAM ); |
158142c2 | 458 | |
1d6bda35 FB |
459 | INLINE float64 float64_abs(float64 a) |
460 | { | |
37d18660 PM |
461 | /* Note that abs does *not* handle NaN specially, nor does |
462 | * it flush denormal inputs to zero. | |
463 | */ | |
f090c9d4 | 464 | return make_float64(float64_val(a) & 0x7fffffffffffffffLL); |
1d6bda35 FB |
465 | } |
466 | ||
467 | INLINE float64 float64_chs(float64 a) | |
468 | { | |
37d18660 PM |
469 | /* Note that chs does *not* handle NaN specially, nor does |
470 | * it flush denormal inputs to zero. | |
471 | */ | |
f090c9d4 | 472 | return make_float64(float64_val(a) ^ 0x8000000000000000LL); |
1d6bda35 FB |
473 | } |
474 | ||
c52ab6f5 AJ |
475 | INLINE int float64_is_infinity(float64 a) |
476 | { | |
477 | return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; | |
478 | } | |
479 | ||
480 | INLINE int float64_is_neg(float64 a) | |
481 | { | |
482 | return float64_val(a) >> 63; | |
483 | } | |
484 | ||
485 | INLINE int float64_is_zero(float64 a) | |
486 | { | |
487 | return (float64_val(a) & 0x7fffffffffffffffLL) == 0; | |
488 | } | |
489 | ||
21d6ebde PM |
490 | INLINE int float64_is_any_nan(float64 a) |
491 | { | |
492 | return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); | |
493 | } | |
494 | ||
c30fe7df CL |
495 | INLINE float64 float64_set_sign(float64 a, int sign) |
496 | { | |
497 | return make_float64((float64_val(a) & 0x7fffffffffffffffULL) | |
498 | | ((int64_t)sign << 63)); | |
499 | } | |
500 | ||
f090c9d4 | 501 | #define float64_zero make_float64(0) |
196cfc89 | 502 | #define float64_one make_float64(0x3ff0000000000000LL) |
8229c991 | 503 | #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) |
c4b4c77a | 504 | #define float64_pi make_float64(0x400921fb54442d18LL) |
c30fe7df CL |
505 | #define float64_half make_float64(0x3fe0000000000000LL) |
506 | #define float64_infinity make_float64(0x7ff0000000000000LL) | |
f090c9d4 | 507 | |
8559666d CL |
508 | /*---------------------------------------------------------------------------- |
509 | | The pattern for a default generated double-precision NaN. | |
510 | *----------------------------------------------------------------------------*/ | |
511 | #if defined(TARGET_SPARC) | |
512 | #define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF )) | |
513 | #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) | |
514 | #define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 )) | |
515 | #elif SNAN_BIT_IS_ONE | |
516 | #define float64_default_nan make_float64(LIT64( 0x7FF7FFFFFFFFFFFF )) | |
517 | #else | |
518 | #define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 )) | |
519 | #endif | |
520 | ||
158142c2 FB |
521 | #ifdef FLOATX80 |
522 | ||
523 | /*---------------------------------------------------------------------------- | |
524 | | Software IEC/IEEE extended double-precision conversion routines. | |
525 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
526 | int32 floatx80_to_int32( floatx80 STATUS_PARAM ); |
527 | int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); | |
528 | int64 floatx80_to_int64( floatx80 STATUS_PARAM ); | |
529 | int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); | |
158142c2 FB |
530 | float32 floatx80_to_float32( floatx80 STATUS_PARAM ); |
531 | float64 floatx80_to_float64( floatx80 STATUS_PARAM ); | |
532 | #ifdef FLOAT128 | |
533 | float128 floatx80_to_float128( floatx80 STATUS_PARAM ); | |
534 | #endif | |
535 | ||
536 | /*---------------------------------------------------------------------------- | |
537 | | Software IEC/IEEE extended double-precision operations. | |
538 | *----------------------------------------------------------------------------*/ | |
539 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); | |
540 | floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM ); | |
541 | floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM ); | |
542 | floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM ); | |
543 | floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM ); | |
544 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); | |
545 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); | |
b689362d | 546 | int floatx80_eq( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
547 | int floatx80_le( floatx80, floatx80 STATUS_PARAM ); |
548 | int floatx80_lt( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 549 | int floatx80_unordered( floatx80, floatx80 STATUS_PARAM ); |
b689362d | 550 | int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
551 | int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); |
552 | int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 553 | int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM ); |
f6714d36 AJ |
554 | int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); |
555 | int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); | |
18569871 | 556 | int floatx80_is_quiet_nan( floatx80 ); |
750afe93 | 557 | int floatx80_is_signaling_nan( floatx80 ); |
f6a7d92a | 558 | floatx80 floatx80_maybe_silence_nan( floatx80 ); |
9ee6e8bb | 559 | floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); |
158142c2 | 560 | |
1d6bda35 FB |
561 | INLINE floatx80 floatx80_abs(floatx80 a) |
562 | { | |
563 | a.high &= 0x7fff; | |
564 | return a; | |
565 | } | |
566 | ||
567 | INLINE floatx80 floatx80_chs(floatx80 a) | |
568 | { | |
569 | a.high ^= 0x8000; | |
570 | return a; | |
571 | } | |
572 | ||
c52ab6f5 AJ |
573 | INLINE int floatx80_is_infinity(floatx80 a) |
574 | { | |
b76235e4 | 575 | return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL; |
c52ab6f5 AJ |
576 | } |
577 | ||
578 | INLINE int floatx80_is_neg(floatx80 a) | |
579 | { | |
580 | return a.high >> 15; | |
581 | } | |
582 | ||
583 | INLINE int floatx80_is_zero(floatx80 a) | |
584 | { | |
585 | return (a.high & 0x7fff) == 0 && a.low == 0; | |
586 | } | |
587 | ||
2bed652f PM |
588 | INLINE int floatx80_is_any_nan(floatx80 a) |
589 | { | |
590 | return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); | |
591 | } | |
592 | ||
f3218a8d AJ |
593 | #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL) |
594 | #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL) | |
595 | #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL) | |
c4b4c77a | 596 | #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL) |
f3218a8d AJ |
597 | #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL) |
598 | #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL) | |
599 | ||
8559666d CL |
600 | /*---------------------------------------------------------------------------- |
601 | | The pattern for a default generated extended double-precision NaN. The | |
602 | | `high' and `low' values hold the most- and least-significant bits, | |
603 | | respectively. | |
604 | *----------------------------------------------------------------------------*/ | |
605 | #if SNAN_BIT_IS_ONE | |
606 | #define floatx80_default_nan_high 0x7FFF | |
607 | #define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF ) | |
608 | #else | |
609 | #define floatx80_default_nan_high 0xFFFF | |
610 | #define floatx80_default_nan_low LIT64( 0xC000000000000000 ) | |
611 | #endif | |
612 | ||
158142c2 FB |
613 | #endif |
614 | ||
615 | #ifdef FLOAT128 | |
616 | ||
617 | /*---------------------------------------------------------------------------- | |
618 | | Software IEC/IEEE quadruple-precision conversion routines. | |
619 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
620 | int32 float128_to_int32( float128 STATUS_PARAM ); |
621 | int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM ); | |
622 | int64 float128_to_int64( float128 STATUS_PARAM ); | |
623 | int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); | |
158142c2 FB |
624 | float32 float128_to_float32( float128 STATUS_PARAM ); |
625 | float64 float128_to_float64( float128 STATUS_PARAM ); | |
626 | #ifdef FLOATX80 | |
627 | floatx80 float128_to_floatx80( float128 STATUS_PARAM ); | |
628 | #endif | |
629 | ||
630 | /*---------------------------------------------------------------------------- | |
631 | | Software IEC/IEEE quadruple-precision operations. | |
632 | *----------------------------------------------------------------------------*/ | |
633 | float128 float128_round_to_int( float128 STATUS_PARAM ); | |
634 | float128 float128_add( float128, float128 STATUS_PARAM ); | |
635 | float128 float128_sub( float128, float128 STATUS_PARAM ); | |
636 | float128 float128_mul( float128, float128 STATUS_PARAM ); | |
637 | float128 float128_div( float128, float128 STATUS_PARAM ); | |
638 | float128 float128_rem( float128, float128 STATUS_PARAM ); | |
639 | float128 float128_sqrt( float128 STATUS_PARAM ); | |
b689362d | 640 | int float128_eq( float128, float128 STATUS_PARAM ); |
750afe93 FB |
641 | int float128_le( float128, float128 STATUS_PARAM ); |
642 | int float128_lt( float128, float128 STATUS_PARAM ); | |
67b7861d | 643 | int float128_unordered( float128, float128 STATUS_PARAM ); |
b689362d | 644 | int float128_eq_quiet( float128, float128 STATUS_PARAM ); |
750afe93 FB |
645 | int float128_le_quiet( float128, float128 STATUS_PARAM ); |
646 | int float128_lt_quiet( float128, float128 STATUS_PARAM ); | |
67b7861d | 647 | int float128_unordered_quiet( float128, float128 STATUS_PARAM ); |
1f587329 BS |
648 | int float128_compare( float128, float128 STATUS_PARAM ); |
649 | int float128_compare_quiet( float128, float128 STATUS_PARAM ); | |
18569871 | 650 | int float128_is_quiet_nan( float128 ); |
750afe93 | 651 | int float128_is_signaling_nan( float128 ); |
f6a7d92a | 652 | float128 float128_maybe_silence_nan( float128 ); |
9ee6e8bb | 653 | float128 float128_scalbn( float128, int STATUS_PARAM ); |
158142c2 | 654 | |
1d6bda35 FB |
655 | INLINE float128 float128_abs(float128 a) |
656 | { | |
657 | a.high &= 0x7fffffffffffffffLL; | |
658 | return a; | |
659 | } | |
660 | ||
661 | INLINE float128 float128_chs(float128 a) | |
662 | { | |
663 | a.high ^= 0x8000000000000000LL; | |
664 | return a; | |
665 | } | |
666 | ||
c52ab6f5 AJ |
667 | INLINE int float128_is_infinity(float128 a) |
668 | { | |
669 | return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; | |
670 | } | |
671 | ||
672 | INLINE int float128_is_neg(float128 a) | |
673 | { | |
674 | return a.high >> 63; | |
675 | } | |
676 | ||
677 | INLINE int float128_is_zero(float128 a) | |
678 | { | |
679 | return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; | |
680 | } | |
681 | ||
2bed652f PM |
682 | INLINE int float128_is_any_nan(float128 a) |
683 | { | |
684 | return ((a.high >> 48) & 0x7fff) == 0x7fff && | |
685 | ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); | |
686 | } | |
687 | ||
8559666d CL |
688 | /*---------------------------------------------------------------------------- |
689 | | The pattern for a default generated quadruple-precision NaN. The `high' and | |
690 | | `low' values hold the most- and least-significant bits, respectively. | |
691 | *----------------------------------------------------------------------------*/ | |
692 | #if SNAN_BIT_IS_ONE | |
693 | #define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF ) | |
694 | #define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF ) | |
695 | #else | |
696 | #define float128_default_nan_high LIT64( 0xFFFF800000000000 ) | |
697 | #define float128_default_nan_low LIT64( 0x0000000000000000 ) | |
698 | #endif | |
699 | ||
158142c2 FB |
700 | #endif |
701 | ||
702 | #else /* CONFIG_SOFTFLOAT */ | |
703 | ||
704 | #include "softfloat-native.h" | |
705 | ||
706 | #endif /* !CONFIG_SOFTFLOAT */ | |
707 | ||
708 | #endif /* !SOFTFLOAT_H */ |