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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 | 45 | #include <inttypes.h> |
789ec7ce | 46 | #include "config-host.h" |
158142c2 FB |
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 | ||
158142c2 FB |
71 | #define STATUS_PARAM , float_status *status |
72 | #define STATUS(field) status->field | |
73 | #define STATUS_VAR , status | |
74 | ||
1d6bda35 FB |
75 | /*---------------------------------------------------------------------------- |
76 | | Software IEC/IEEE floating-point ordering relations | |
77 | *----------------------------------------------------------------------------*/ | |
78 | enum { | |
79 | float_relation_less = -1, | |
80 | float_relation_equal = 0, | |
81 | float_relation_greater = 1, | |
82 | float_relation_unordered = 2 | |
83 | }; | |
84 | ||
158142c2 FB |
85 | /*---------------------------------------------------------------------------- |
86 | | Software IEC/IEEE floating-point types. | |
87 | *----------------------------------------------------------------------------*/ | |
f090c9d4 PB |
88 | /* Use structures for soft-float types. This prevents accidentally mixing |
89 | them with native int/float types. A sufficiently clever compiler and | |
90 | sane ABI should be able to see though these structs. However | |
91 | x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */ | |
92 | //#define USE_SOFTFLOAT_STRUCT_TYPES | |
93 | #ifdef USE_SOFTFLOAT_STRUCT_TYPES | |
bb4d4bb3 PM |
94 | typedef struct { |
95 | uint16_t v; | |
96 | } float16; | |
97 | #define float16_val(x) (((float16)(x)).v) | |
98 | #define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; }) | |
d5138cf4 | 99 | #define const_float16(x) { x } |
f090c9d4 PB |
100 | typedef struct { |
101 | uint32_t v; | |
102 | } float32; | |
103 | /* The cast ensures an error if the wrong type is passed. */ | |
104 | #define float32_val(x) (((float32)(x)).v) | |
105 | #define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; }) | |
d5138cf4 | 106 | #define const_float32(x) { x } |
f090c9d4 PB |
107 | typedef struct { |
108 | uint64_t v; | |
109 | } float64; | |
110 | #define float64_val(x) (((float64)(x)).v) | |
111 | #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; }) | |
d5138cf4 | 112 | #define const_float64(x) { x } |
f090c9d4 | 113 | #else |
bb4d4bb3 | 114 | typedef uint16_t float16; |
158142c2 FB |
115 | typedef uint32_t float32; |
116 | typedef uint64_t float64; | |
bb4d4bb3 | 117 | #define float16_val(x) (x) |
f090c9d4 PB |
118 | #define float32_val(x) (x) |
119 | #define float64_val(x) (x) | |
bb4d4bb3 | 120 | #define make_float16(x) (x) |
f090c9d4 PB |
121 | #define make_float32(x) (x) |
122 | #define make_float64(x) (x) | |
d5138cf4 PM |
123 | #define const_float16(x) (x) |
124 | #define const_float32(x) (x) | |
125 | #define const_float64(x) (x) | |
f090c9d4 | 126 | #endif |
158142c2 FB |
127 | typedef struct { |
128 | uint64_t low; | |
129 | uint16_t high; | |
130 | } floatx80; | |
f3218a8d | 131 | #define make_floatx80(exp, mant) ((floatx80) { mant, exp }) |
158142c2 | 132 | typedef struct { |
e2542fe2 | 133 | #ifdef HOST_WORDS_BIGENDIAN |
158142c2 FB |
134 | uint64_t high, low; |
135 | #else | |
136 | uint64_t low, high; | |
137 | #endif | |
138 | } float128; | |
789ec7ce | 139 | #define make_float128(high_, low_) ((float128) { .high = high_, .low = low_ }) |
158142c2 FB |
140 | |
141 | /*---------------------------------------------------------------------------- | |
142 | | Software IEC/IEEE floating-point underflow tininess-detection mode. | |
143 | *----------------------------------------------------------------------------*/ | |
144 | enum { | |
145 | float_tininess_after_rounding = 0, | |
146 | float_tininess_before_rounding = 1 | |
147 | }; | |
148 | ||
149 | /*---------------------------------------------------------------------------- | |
150 | | Software IEC/IEEE floating-point rounding mode. | |
151 | *----------------------------------------------------------------------------*/ | |
152 | enum { | |
153 | float_round_nearest_even = 0, | |
154 | float_round_down = 1, | |
155 | float_round_up = 2, | |
156 | float_round_to_zero = 3 | |
157 | }; | |
158 | ||
159 | /*---------------------------------------------------------------------------- | |
160 | | Software IEC/IEEE floating-point exception flags. | |
161 | *----------------------------------------------------------------------------*/ | |
162 | enum { | |
163 | float_flag_invalid = 1, | |
164 | float_flag_divbyzero = 4, | |
165 | float_flag_overflow = 8, | |
166 | float_flag_underflow = 16, | |
37d18660 | 167 | float_flag_inexact = 32, |
e6afc87f PM |
168 | float_flag_input_denormal = 64, |
169 | float_flag_output_denormal = 128 | |
158142c2 FB |
170 | }; |
171 | ||
172 | typedef struct float_status { | |
173 | signed char float_detect_tininess; | |
174 | signed char float_rounding_mode; | |
175 | signed char float_exception_flags; | |
158142c2 | 176 | signed char floatx80_rounding_precision; |
37d18660 | 177 | /* should denormalised results go to zero and set the inexact flag? */ |
fe76d976 | 178 | flag flush_to_zero; |
37d18660 PM |
179 | /* should denormalised inputs go to zero and set the input_denormal flag? */ |
180 | flag flush_inputs_to_zero; | |
5c7908ed | 181 | flag default_nan_mode; |
158142c2 FB |
182 | } float_status; |
183 | ||
184 | void set_float_rounding_mode(int val STATUS_PARAM); | |
1d6bda35 | 185 | void set_float_exception_flags(int val STATUS_PARAM); |
c29aca44 PM |
186 | INLINE void set_float_detect_tininess(int val STATUS_PARAM) |
187 | { | |
188 | STATUS(float_detect_tininess) = val; | |
189 | } | |
fe76d976 PB |
190 | INLINE void set_flush_to_zero(flag val STATUS_PARAM) |
191 | { | |
192 | STATUS(flush_to_zero) = val; | |
193 | } | |
37d18660 PM |
194 | INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM) |
195 | { | |
196 | STATUS(flush_inputs_to_zero) = val; | |
197 | } | |
5c7908ed PB |
198 | INLINE void set_default_nan_mode(flag val STATUS_PARAM) |
199 | { | |
200 | STATUS(default_nan_mode) = val; | |
201 | } | |
1d6bda35 FB |
202 | INLINE int get_float_exception_flags(float_status *status) |
203 | { | |
204 | return STATUS(float_exception_flags); | |
205 | } | |
158142c2 | 206 | void set_floatx80_rounding_precision(int val STATUS_PARAM); |
158142c2 FB |
207 | |
208 | /*---------------------------------------------------------------------------- | |
209 | | Routine to raise any or all of the software IEC/IEEE floating-point | |
210 | | exception flags. | |
211 | *----------------------------------------------------------------------------*/ | |
ec530c81 | 212 | void float_raise( int8 flags STATUS_PARAM); |
158142c2 FB |
213 | |
214 | /*---------------------------------------------------------------------------- | |
215 | | Software IEC/IEEE integer-to-floating-point conversion routines. | |
216 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
217 | float32 int32_to_float32( int32 STATUS_PARAM ); |
218 | float64 int32_to_float64( int32 STATUS_PARAM ); | |
1d6bda35 FB |
219 | float32 uint32_to_float32( unsigned int STATUS_PARAM ); |
220 | float64 uint32_to_float64( unsigned int STATUS_PARAM ); | |
87b8cc3c | 221 | floatx80 int32_to_floatx80( int32 STATUS_PARAM ); |
87b8cc3c | 222 | float128 int32_to_float128( int32 STATUS_PARAM ); |
87b8cc3c AF |
223 | float32 int64_to_float32( int64 STATUS_PARAM ); |
224 | float32 uint64_to_float32( uint64 STATUS_PARAM ); | |
225 | float64 int64_to_float64( int64 STATUS_PARAM ); | |
226 | float64 uint64_to_float64( uint64 STATUS_PARAM ); | |
87b8cc3c | 227 | floatx80 int64_to_floatx80( int64 STATUS_PARAM ); |
87b8cc3c | 228 | float128 int64_to_float128( int64 STATUS_PARAM ); |
158142c2 | 229 | |
60011498 PB |
230 | /*---------------------------------------------------------------------------- |
231 | | Software half-precision conversion routines. | |
232 | *----------------------------------------------------------------------------*/ | |
bb4d4bb3 PM |
233 | float16 float32_to_float16( float32, flag STATUS_PARAM ); |
234 | float32 float16_to_float32( float16, flag STATUS_PARAM ); | |
235 | ||
236 | /*---------------------------------------------------------------------------- | |
237 | | Software half-precision operations. | |
238 | *----------------------------------------------------------------------------*/ | |
239 | int float16_is_quiet_nan( float16 ); | |
240 | int float16_is_signaling_nan( float16 ); | |
241 | float16 float16_maybe_silence_nan( float16 ); | |
60011498 | 242 | |
8559666d CL |
243 | /*---------------------------------------------------------------------------- |
244 | | The pattern for a default generated half-precision NaN. | |
245 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 246 | extern const float16 float16_default_nan; |
8559666d | 247 | |
158142c2 FB |
248 | /*---------------------------------------------------------------------------- |
249 | | Software IEC/IEEE single-precision conversion routines. | |
250 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 251 | int16 float32_to_int16_round_to_zero( float32 STATUS_PARAM ); |
cbcef455 | 252 | unsigned int float32_to_uint16_round_to_zero( float32 STATUS_PARAM ); |
87b8cc3c AF |
253 | int32 float32_to_int32( float32 STATUS_PARAM ); |
254 | int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM ); | |
255 | uint32 float32_to_uint32( float32 STATUS_PARAM ); | |
256 | uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM ); | |
257 | int64 float32_to_int64( float32 STATUS_PARAM ); | |
258 | int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM ); | |
158142c2 | 259 | float64 float32_to_float64( float32 STATUS_PARAM ); |
158142c2 | 260 | floatx80 float32_to_floatx80( float32 STATUS_PARAM ); |
158142c2 | 261 | float128 float32_to_float128( float32 STATUS_PARAM ); |
158142c2 FB |
262 | |
263 | /*---------------------------------------------------------------------------- | |
264 | | Software IEC/IEEE single-precision operations. | |
265 | *----------------------------------------------------------------------------*/ | |
266 | float32 float32_round_to_int( float32 STATUS_PARAM ); | |
267 | float32 float32_add( float32, float32 STATUS_PARAM ); | |
268 | float32 float32_sub( float32, float32 STATUS_PARAM ); | |
269 | float32 float32_mul( float32, float32 STATUS_PARAM ); | |
270 | float32 float32_div( float32, float32 STATUS_PARAM ); | |
271 | float32 float32_rem( float32, float32 STATUS_PARAM ); | |
272 | float32 float32_sqrt( float32 STATUS_PARAM ); | |
8229c991 | 273 | float32 float32_exp2( float32 STATUS_PARAM ); |
374dfc33 | 274 | float32 float32_log2( float32 STATUS_PARAM ); |
b689362d | 275 | int float32_eq( float32, float32 STATUS_PARAM ); |
750afe93 FB |
276 | int float32_le( float32, float32 STATUS_PARAM ); |
277 | int float32_lt( float32, float32 STATUS_PARAM ); | |
67b7861d | 278 | int float32_unordered( float32, float32 STATUS_PARAM ); |
b689362d | 279 | int float32_eq_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
280 | int float32_le_quiet( float32, float32 STATUS_PARAM ); |
281 | int float32_lt_quiet( float32, float32 STATUS_PARAM ); | |
67b7861d | 282 | int float32_unordered_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
283 | int float32_compare( float32, float32 STATUS_PARAM ); |
284 | int float32_compare_quiet( float32, float32 STATUS_PARAM ); | |
274f1b04 PM |
285 | float32 float32_min(float32, float32 STATUS_PARAM); |
286 | float32 float32_max(float32, float32 STATUS_PARAM); | |
18569871 | 287 | int float32_is_quiet_nan( float32 ); |
750afe93 | 288 | int float32_is_signaling_nan( float32 ); |
b408dbde | 289 | float32 float32_maybe_silence_nan( float32 ); |
9ee6e8bb | 290 | float32 float32_scalbn( float32, int STATUS_PARAM ); |
158142c2 | 291 | |
1d6bda35 FB |
292 | INLINE float32 float32_abs(float32 a) |
293 | { | |
37d18660 PM |
294 | /* Note that abs does *not* handle NaN specially, nor does |
295 | * it flush denormal inputs to zero. | |
296 | */ | |
f090c9d4 | 297 | return make_float32(float32_val(a) & 0x7fffffff); |
1d6bda35 FB |
298 | } |
299 | ||
300 | INLINE float32 float32_chs(float32 a) | |
301 | { | |
37d18660 PM |
302 | /* Note that chs does *not* handle NaN specially, nor does |
303 | * it flush denormal inputs to zero. | |
304 | */ | |
f090c9d4 | 305 | return make_float32(float32_val(a) ^ 0x80000000); |
1d6bda35 FB |
306 | } |
307 | ||
c52ab6f5 AJ |
308 | INLINE int float32_is_infinity(float32 a) |
309 | { | |
dadd71a7 | 310 | return (float32_val(a) & 0x7fffffff) == 0x7f800000; |
c52ab6f5 AJ |
311 | } |
312 | ||
313 | INLINE int float32_is_neg(float32 a) | |
314 | { | |
315 | return float32_val(a) >> 31; | |
316 | } | |
317 | ||
318 | INLINE int float32_is_zero(float32 a) | |
319 | { | |
320 | return (float32_val(a) & 0x7fffffff) == 0; | |
321 | } | |
322 | ||
21d6ebde PM |
323 | INLINE int float32_is_any_nan(float32 a) |
324 | { | |
325 | return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); | |
326 | } | |
327 | ||
6f3300ad PM |
328 | INLINE int float32_is_zero_or_denormal(float32 a) |
329 | { | |
330 | return (float32_val(a) & 0x7f800000) == 0; | |
331 | } | |
332 | ||
c30fe7df CL |
333 | INLINE float32 float32_set_sign(float32 a, int sign) |
334 | { | |
335 | return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31)); | |
336 | } | |
337 | ||
f090c9d4 | 338 | #define float32_zero make_float32(0) |
196cfc89 | 339 | #define float32_one make_float32(0x3f800000) |
8229c991 | 340 | #define float32_ln2 make_float32(0x3f317218) |
c4b4c77a | 341 | #define float32_pi make_float32(0x40490fdb) |
c30fe7df CL |
342 | #define float32_half make_float32(0x3f000000) |
343 | #define float32_infinity make_float32(0x7f800000) | |
f090c9d4 | 344 | |
8559666d CL |
345 | |
346 | /*---------------------------------------------------------------------------- | |
347 | | The pattern for a default generated single-precision NaN. | |
348 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 349 | extern const float32 float32_default_nan; |
8559666d | 350 | |
158142c2 FB |
351 | /*---------------------------------------------------------------------------- |
352 | | Software IEC/IEEE double-precision conversion routines. | |
353 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 354 | int16 float64_to_int16_round_to_zero( float64 STATUS_PARAM ); |
cbcef455 | 355 | unsigned int float64_to_uint16_round_to_zero( float64 STATUS_PARAM ); |
87b8cc3c AF |
356 | int32 float64_to_int32( float64 STATUS_PARAM ); |
357 | int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM ); | |
358 | uint32 float64_to_uint32( float64 STATUS_PARAM ); | |
359 | uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); | |
360 | int64 float64_to_int64( float64 STATUS_PARAM ); | |
361 | int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); | |
362 | uint64 float64_to_uint64 (float64 a STATUS_PARAM); | |
363 | uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); | |
158142c2 | 364 | float32 float64_to_float32( float64 STATUS_PARAM ); |
158142c2 | 365 | floatx80 float64_to_floatx80( float64 STATUS_PARAM ); |
158142c2 | 366 | float128 float64_to_float128( float64 STATUS_PARAM ); |
158142c2 FB |
367 | |
368 | /*---------------------------------------------------------------------------- | |
369 | | Software IEC/IEEE double-precision operations. | |
370 | *----------------------------------------------------------------------------*/ | |
371 | float64 float64_round_to_int( float64 STATUS_PARAM ); | |
e6e5906b | 372 | float64 float64_trunc_to_int( float64 STATUS_PARAM ); |
158142c2 FB |
373 | float64 float64_add( float64, float64 STATUS_PARAM ); |
374 | float64 float64_sub( float64, float64 STATUS_PARAM ); | |
375 | float64 float64_mul( float64, float64 STATUS_PARAM ); | |
376 | float64 float64_div( float64, float64 STATUS_PARAM ); | |
377 | float64 float64_rem( float64, float64 STATUS_PARAM ); | |
378 | float64 float64_sqrt( float64 STATUS_PARAM ); | |
374dfc33 | 379 | float64 float64_log2( float64 STATUS_PARAM ); |
b689362d | 380 | int float64_eq( float64, float64 STATUS_PARAM ); |
750afe93 FB |
381 | int float64_le( float64, float64 STATUS_PARAM ); |
382 | int float64_lt( float64, float64 STATUS_PARAM ); | |
67b7861d | 383 | int float64_unordered( float64, float64 STATUS_PARAM ); |
b689362d | 384 | int float64_eq_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
385 | int float64_le_quiet( float64, float64 STATUS_PARAM ); |
386 | int float64_lt_quiet( float64, float64 STATUS_PARAM ); | |
67b7861d | 387 | int float64_unordered_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
388 | int float64_compare( float64, float64 STATUS_PARAM ); |
389 | int float64_compare_quiet( float64, float64 STATUS_PARAM ); | |
274f1b04 PM |
390 | float64 float64_min(float64, float64 STATUS_PARAM); |
391 | float64 float64_max(float64, float64 STATUS_PARAM); | |
18569871 | 392 | int float64_is_quiet_nan( float64 a ); |
750afe93 | 393 | int float64_is_signaling_nan( float64 ); |
b408dbde | 394 | float64 float64_maybe_silence_nan( float64 ); |
9ee6e8bb | 395 | float64 float64_scalbn( float64, int STATUS_PARAM ); |
158142c2 | 396 | |
1d6bda35 FB |
397 | INLINE float64 float64_abs(float64 a) |
398 | { | |
37d18660 PM |
399 | /* Note that abs does *not* handle NaN specially, nor does |
400 | * it flush denormal inputs to zero. | |
401 | */ | |
f090c9d4 | 402 | return make_float64(float64_val(a) & 0x7fffffffffffffffLL); |
1d6bda35 FB |
403 | } |
404 | ||
405 | INLINE float64 float64_chs(float64 a) | |
406 | { | |
37d18660 PM |
407 | /* Note that chs does *not* handle NaN specially, nor does |
408 | * it flush denormal inputs to zero. | |
409 | */ | |
f090c9d4 | 410 | return make_float64(float64_val(a) ^ 0x8000000000000000LL); |
1d6bda35 FB |
411 | } |
412 | ||
c52ab6f5 AJ |
413 | INLINE int float64_is_infinity(float64 a) |
414 | { | |
415 | return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; | |
416 | } | |
417 | ||
418 | INLINE int float64_is_neg(float64 a) | |
419 | { | |
420 | return float64_val(a) >> 63; | |
421 | } | |
422 | ||
423 | INLINE int float64_is_zero(float64 a) | |
424 | { | |
425 | return (float64_val(a) & 0x7fffffffffffffffLL) == 0; | |
426 | } | |
427 | ||
21d6ebde PM |
428 | INLINE int float64_is_any_nan(float64 a) |
429 | { | |
430 | return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); | |
431 | } | |
432 | ||
587eabfa AJ |
433 | INLINE int float64_is_zero_or_denormal(float64 a) |
434 | { | |
435 | return (float64_val(a) & 0x7ff0000000000000LL) == 0; | |
436 | } | |
437 | ||
c30fe7df CL |
438 | INLINE float64 float64_set_sign(float64 a, int sign) |
439 | { | |
440 | return make_float64((float64_val(a) & 0x7fffffffffffffffULL) | |
441 | | ((int64_t)sign << 63)); | |
442 | } | |
443 | ||
f090c9d4 | 444 | #define float64_zero make_float64(0) |
196cfc89 | 445 | #define float64_one make_float64(0x3ff0000000000000LL) |
8229c991 | 446 | #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) |
c4b4c77a | 447 | #define float64_pi make_float64(0x400921fb54442d18LL) |
c30fe7df CL |
448 | #define float64_half make_float64(0x3fe0000000000000LL) |
449 | #define float64_infinity make_float64(0x7ff0000000000000LL) | |
f090c9d4 | 450 | |
8559666d CL |
451 | /*---------------------------------------------------------------------------- |
452 | | The pattern for a default generated double-precision NaN. | |
453 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 454 | extern const float64 float64_default_nan; |
8559666d | 455 | |
158142c2 FB |
456 | /*---------------------------------------------------------------------------- |
457 | | Software IEC/IEEE extended double-precision conversion routines. | |
458 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
459 | int32 floatx80_to_int32( floatx80 STATUS_PARAM ); |
460 | int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); | |
461 | int64 floatx80_to_int64( floatx80 STATUS_PARAM ); | |
462 | int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); | |
158142c2 FB |
463 | float32 floatx80_to_float32( floatx80 STATUS_PARAM ); |
464 | float64 floatx80_to_float64( floatx80 STATUS_PARAM ); | |
158142c2 | 465 | float128 floatx80_to_float128( floatx80 STATUS_PARAM ); |
158142c2 FB |
466 | |
467 | /*---------------------------------------------------------------------------- | |
468 | | Software IEC/IEEE extended double-precision operations. | |
469 | *----------------------------------------------------------------------------*/ | |
470 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); | |
471 | floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM ); | |
472 | floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM ); | |
473 | floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM ); | |
474 | floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM ); | |
475 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); | |
476 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); | |
b689362d | 477 | int floatx80_eq( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
478 | int floatx80_le( floatx80, floatx80 STATUS_PARAM ); |
479 | int floatx80_lt( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 480 | int floatx80_unordered( floatx80, floatx80 STATUS_PARAM ); |
b689362d | 481 | int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
482 | int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); |
483 | int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 484 | int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM ); |
f6714d36 AJ |
485 | int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); |
486 | int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); | |
18569871 | 487 | int floatx80_is_quiet_nan( floatx80 ); |
750afe93 | 488 | int floatx80_is_signaling_nan( floatx80 ); |
f6a7d92a | 489 | floatx80 floatx80_maybe_silence_nan( floatx80 ); |
9ee6e8bb | 490 | floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); |
158142c2 | 491 | |
1d6bda35 FB |
492 | INLINE floatx80 floatx80_abs(floatx80 a) |
493 | { | |
494 | a.high &= 0x7fff; | |
495 | return a; | |
496 | } | |
497 | ||
498 | INLINE floatx80 floatx80_chs(floatx80 a) | |
499 | { | |
500 | a.high ^= 0x8000; | |
501 | return a; | |
502 | } | |
503 | ||
c52ab6f5 AJ |
504 | INLINE int floatx80_is_infinity(floatx80 a) |
505 | { | |
b76235e4 | 506 | return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL; |
c52ab6f5 AJ |
507 | } |
508 | ||
509 | INLINE int floatx80_is_neg(floatx80 a) | |
510 | { | |
511 | return a.high >> 15; | |
512 | } | |
513 | ||
514 | INLINE int floatx80_is_zero(floatx80 a) | |
515 | { | |
516 | return (a.high & 0x7fff) == 0 && a.low == 0; | |
517 | } | |
518 | ||
587eabfa AJ |
519 | INLINE int floatx80_is_zero_or_denormal(floatx80 a) |
520 | { | |
521 | return (a.high & 0x7fff) == 0; | |
522 | } | |
523 | ||
2bed652f PM |
524 | INLINE int floatx80_is_any_nan(floatx80 a) |
525 | { | |
526 | return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); | |
527 | } | |
528 | ||
f3218a8d AJ |
529 | #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL) |
530 | #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL) | |
531 | #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL) | |
c4b4c77a | 532 | #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL) |
f3218a8d AJ |
533 | #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL) |
534 | #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL) | |
535 | ||
8559666d | 536 | /*---------------------------------------------------------------------------- |
789ec7ce | 537 | | The pattern for a default generated extended double-precision NaN. |
8559666d | 538 | *----------------------------------------------------------------------------*/ |
789ec7ce | 539 | extern const floatx80 floatx80_default_nan; |
8559666d | 540 | |
158142c2 FB |
541 | /*---------------------------------------------------------------------------- |
542 | | Software IEC/IEEE quadruple-precision conversion routines. | |
543 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
544 | int32 float128_to_int32( float128 STATUS_PARAM ); |
545 | int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM ); | |
546 | int64 float128_to_int64( float128 STATUS_PARAM ); | |
547 | int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); | |
158142c2 FB |
548 | float32 float128_to_float32( float128 STATUS_PARAM ); |
549 | float64 float128_to_float64( float128 STATUS_PARAM ); | |
158142c2 | 550 | floatx80 float128_to_floatx80( float128 STATUS_PARAM ); |
158142c2 FB |
551 | |
552 | /*---------------------------------------------------------------------------- | |
553 | | Software IEC/IEEE quadruple-precision operations. | |
554 | *----------------------------------------------------------------------------*/ | |
555 | float128 float128_round_to_int( float128 STATUS_PARAM ); | |
556 | float128 float128_add( float128, float128 STATUS_PARAM ); | |
557 | float128 float128_sub( float128, float128 STATUS_PARAM ); | |
558 | float128 float128_mul( float128, float128 STATUS_PARAM ); | |
559 | float128 float128_div( float128, float128 STATUS_PARAM ); | |
560 | float128 float128_rem( float128, float128 STATUS_PARAM ); | |
561 | float128 float128_sqrt( float128 STATUS_PARAM ); | |
b689362d | 562 | int float128_eq( float128, float128 STATUS_PARAM ); |
750afe93 FB |
563 | int float128_le( float128, float128 STATUS_PARAM ); |
564 | int float128_lt( float128, float128 STATUS_PARAM ); | |
67b7861d | 565 | int float128_unordered( float128, float128 STATUS_PARAM ); |
b689362d | 566 | int float128_eq_quiet( float128, float128 STATUS_PARAM ); |
750afe93 FB |
567 | int float128_le_quiet( float128, float128 STATUS_PARAM ); |
568 | int float128_lt_quiet( float128, float128 STATUS_PARAM ); | |
67b7861d | 569 | int float128_unordered_quiet( float128, float128 STATUS_PARAM ); |
1f587329 BS |
570 | int float128_compare( float128, float128 STATUS_PARAM ); |
571 | int float128_compare_quiet( float128, float128 STATUS_PARAM ); | |
18569871 | 572 | int float128_is_quiet_nan( float128 ); |
750afe93 | 573 | int float128_is_signaling_nan( float128 ); |
f6a7d92a | 574 | float128 float128_maybe_silence_nan( float128 ); |
9ee6e8bb | 575 | float128 float128_scalbn( float128, int STATUS_PARAM ); |
158142c2 | 576 | |
1d6bda35 FB |
577 | INLINE float128 float128_abs(float128 a) |
578 | { | |
579 | a.high &= 0x7fffffffffffffffLL; | |
580 | return a; | |
581 | } | |
582 | ||
583 | INLINE float128 float128_chs(float128 a) | |
584 | { | |
585 | a.high ^= 0x8000000000000000LL; | |
586 | return a; | |
587 | } | |
588 | ||
c52ab6f5 AJ |
589 | INLINE int float128_is_infinity(float128 a) |
590 | { | |
591 | return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; | |
592 | } | |
593 | ||
594 | INLINE int float128_is_neg(float128 a) | |
595 | { | |
596 | return a.high >> 63; | |
597 | } | |
598 | ||
599 | INLINE int float128_is_zero(float128 a) | |
600 | { | |
601 | return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; | |
602 | } | |
603 | ||
587eabfa AJ |
604 | INLINE int float128_is_zero_or_denormal(float128 a) |
605 | { | |
606 | return (a.high & 0x7fff000000000000LL) == 0; | |
607 | } | |
608 | ||
2bed652f PM |
609 | INLINE int float128_is_any_nan(float128 a) |
610 | { | |
611 | return ((a.high >> 48) & 0x7fff) == 0x7fff && | |
612 | ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); | |
613 | } | |
614 | ||
8559666d | 615 | /*---------------------------------------------------------------------------- |
789ec7ce | 616 | | The pattern for a default generated quadruple-precision NaN. |
8559666d | 617 | *----------------------------------------------------------------------------*/ |
789ec7ce | 618 | extern const float128 float128_default_nan; |
8559666d | 619 | |
158142c2 | 620 | #endif /* !SOFTFLOAT_H */ |