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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 | #define STATUS_PARAM , float_status *status |
78 | #define STATUS(field) status->field | |
79 | #define STATUS_VAR , status | |
80 | ||
1d6bda35 FB |
81 | /*---------------------------------------------------------------------------- |
82 | | Software IEC/IEEE floating-point ordering relations | |
83 | *----------------------------------------------------------------------------*/ | |
84 | enum { | |
85 | float_relation_less = -1, | |
86 | float_relation_equal = 0, | |
87 | float_relation_greater = 1, | |
88 | float_relation_unordered = 2 | |
89 | }; | |
90 | ||
158142c2 FB |
91 | /*---------------------------------------------------------------------------- |
92 | | Software IEC/IEEE floating-point types. | |
93 | *----------------------------------------------------------------------------*/ | |
f090c9d4 PB |
94 | /* Use structures for soft-float types. This prevents accidentally mixing |
95 | them with native int/float types. A sufficiently clever compiler and | |
96 | sane ABI should be able to see though these structs. However | |
97 | x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */ | |
98 | //#define USE_SOFTFLOAT_STRUCT_TYPES | |
99 | #ifdef USE_SOFTFLOAT_STRUCT_TYPES | |
bb4d4bb3 PM |
100 | typedef struct { |
101 | uint16_t v; | |
102 | } float16; | |
103 | #define float16_val(x) (((float16)(x)).v) | |
104 | #define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; }) | |
d5138cf4 | 105 | #define const_float16(x) { x } |
f090c9d4 PB |
106 | typedef struct { |
107 | uint32_t v; | |
108 | } float32; | |
109 | /* The cast ensures an error if the wrong type is passed. */ | |
110 | #define float32_val(x) (((float32)(x)).v) | |
111 | #define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; }) | |
d5138cf4 | 112 | #define const_float32(x) { x } |
f090c9d4 PB |
113 | typedef struct { |
114 | uint64_t v; | |
115 | } float64; | |
116 | #define float64_val(x) (((float64)(x)).v) | |
117 | #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; }) | |
d5138cf4 | 118 | #define const_float64(x) { x } |
f090c9d4 | 119 | #else |
bb4d4bb3 | 120 | typedef uint16_t float16; |
158142c2 FB |
121 | typedef uint32_t float32; |
122 | typedef uint64_t float64; | |
bb4d4bb3 | 123 | #define float16_val(x) (x) |
f090c9d4 PB |
124 | #define float32_val(x) (x) |
125 | #define float64_val(x) (x) | |
bb4d4bb3 | 126 | #define make_float16(x) (x) |
f090c9d4 PB |
127 | #define make_float32(x) (x) |
128 | #define make_float64(x) (x) | |
d5138cf4 PM |
129 | #define const_float16(x) (x) |
130 | #define const_float32(x) (x) | |
131 | #define const_float64(x) (x) | |
f090c9d4 | 132 | #endif |
158142c2 FB |
133 | typedef struct { |
134 | uint64_t low; | |
135 | uint16_t high; | |
136 | } floatx80; | |
f3218a8d | 137 | #define make_floatx80(exp, mant) ((floatx80) { mant, exp }) |
158142c2 | 138 | typedef struct { |
e2542fe2 | 139 | #ifdef HOST_WORDS_BIGENDIAN |
158142c2 FB |
140 | uint64_t high, low; |
141 | #else | |
142 | uint64_t low, high; | |
143 | #endif | |
144 | } float128; | |
158142c2 FB |
145 | |
146 | /*---------------------------------------------------------------------------- | |
147 | | Software IEC/IEEE floating-point underflow tininess-detection mode. | |
148 | *----------------------------------------------------------------------------*/ | |
149 | enum { | |
150 | float_tininess_after_rounding = 0, | |
151 | float_tininess_before_rounding = 1 | |
152 | }; | |
153 | ||
154 | /*---------------------------------------------------------------------------- | |
155 | | Software IEC/IEEE floating-point rounding mode. | |
156 | *----------------------------------------------------------------------------*/ | |
157 | enum { | |
158 | float_round_nearest_even = 0, | |
159 | float_round_down = 1, | |
160 | float_round_up = 2, | |
161 | float_round_to_zero = 3 | |
162 | }; | |
163 | ||
164 | /*---------------------------------------------------------------------------- | |
165 | | Software IEC/IEEE floating-point exception flags. | |
166 | *----------------------------------------------------------------------------*/ | |
167 | enum { | |
168 | float_flag_invalid = 1, | |
169 | float_flag_divbyzero = 4, | |
170 | float_flag_overflow = 8, | |
171 | float_flag_underflow = 16, | |
37d18660 | 172 | float_flag_inexact = 32, |
e6afc87f PM |
173 | float_flag_input_denormal = 64, |
174 | float_flag_output_denormal = 128 | |
158142c2 FB |
175 | }; |
176 | ||
177 | typedef struct float_status { | |
178 | signed char float_detect_tininess; | |
179 | signed char float_rounding_mode; | |
180 | signed char float_exception_flags; | |
158142c2 | 181 | signed char floatx80_rounding_precision; |
37d18660 | 182 | /* should denormalised results go to zero and set the inexact flag? */ |
fe76d976 | 183 | flag flush_to_zero; |
37d18660 PM |
184 | /* should denormalised inputs go to zero and set the input_denormal flag? */ |
185 | flag flush_inputs_to_zero; | |
5c7908ed | 186 | flag default_nan_mode; |
158142c2 FB |
187 | } float_status; |
188 | ||
189 | void set_float_rounding_mode(int val STATUS_PARAM); | |
1d6bda35 | 190 | void set_float_exception_flags(int val STATUS_PARAM); |
c29aca44 PM |
191 | INLINE void set_float_detect_tininess(int val STATUS_PARAM) |
192 | { | |
193 | STATUS(float_detect_tininess) = val; | |
194 | } | |
fe76d976 PB |
195 | INLINE void set_flush_to_zero(flag val STATUS_PARAM) |
196 | { | |
197 | STATUS(flush_to_zero) = val; | |
198 | } | |
37d18660 PM |
199 | INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM) |
200 | { | |
201 | STATUS(flush_inputs_to_zero) = val; | |
202 | } | |
5c7908ed PB |
203 | INLINE void set_default_nan_mode(flag val STATUS_PARAM) |
204 | { | |
205 | STATUS(default_nan_mode) = val; | |
206 | } | |
1d6bda35 FB |
207 | INLINE int get_float_exception_flags(float_status *status) |
208 | { | |
209 | return STATUS(float_exception_flags); | |
210 | } | |
158142c2 | 211 | void set_floatx80_rounding_precision(int val STATUS_PARAM); |
158142c2 FB |
212 | |
213 | /*---------------------------------------------------------------------------- | |
214 | | Routine to raise any or all of the software IEC/IEEE floating-point | |
215 | | exception flags. | |
216 | *----------------------------------------------------------------------------*/ | |
ec530c81 | 217 | void float_raise( int8 flags STATUS_PARAM); |
158142c2 FB |
218 | |
219 | /*---------------------------------------------------------------------------- | |
220 | | Software IEC/IEEE integer-to-floating-point conversion routines. | |
221 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
222 | float32 int32_to_float32( int32 STATUS_PARAM ); |
223 | float64 int32_to_float64( int32 STATUS_PARAM ); | |
1d6bda35 FB |
224 | float32 uint32_to_float32( unsigned int STATUS_PARAM ); |
225 | float64 uint32_to_float64( unsigned int STATUS_PARAM ); | |
87b8cc3c | 226 | floatx80 int32_to_floatx80( int32 STATUS_PARAM ); |
87b8cc3c | 227 | float128 int32_to_float128( int32 STATUS_PARAM ); |
87b8cc3c AF |
228 | float32 int64_to_float32( int64 STATUS_PARAM ); |
229 | float32 uint64_to_float32( uint64 STATUS_PARAM ); | |
230 | float64 int64_to_float64( int64 STATUS_PARAM ); | |
231 | float64 uint64_to_float64( uint64 STATUS_PARAM ); | |
87b8cc3c | 232 | floatx80 int64_to_floatx80( int64 STATUS_PARAM ); |
87b8cc3c | 233 | float128 int64_to_float128( int64 STATUS_PARAM ); |
158142c2 | 234 | |
60011498 PB |
235 | /*---------------------------------------------------------------------------- |
236 | | Software half-precision conversion routines. | |
237 | *----------------------------------------------------------------------------*/ | |
bb4d4bb3 PM |
238 | float16 float32_to_float16( float32, flag STATUS_PARAM ); |
239 | float32 float16_to_float32( float16, flag STATUS_PARAM ); | |
240 | ||
241 | /*---------------------------------------------------------------------------- | |
242 | | Software half-precision operations. | |
243 | *----------------------------------------------------------------------------*/ | |
244 | int float16_is_quiet_nan( float16 ); | |
245 | int float16_is_signaling_nan( float16 ); | |
246 | float16 float16_maybe_silence_nan( float16 ); | |
60011498 | 247 | |
8559666d CL |
248 | /*---------------------------------------------------------------------------- |
249 | | The pattern for a default generated half-precision NaN. | |
250 | *----------------------------------------------------------------------------*/ | |
251 | #if defined(TARGET_ARM) | |
252 | #define float16_default_nan make_float16(0x7E00) | |
253 | #elif SNAN_BIT_IS_ONE | |
254 | #define float16_default_nan make_float16(0x7DFF) | |
255 | #else | |
256 | #define float16_default_nan make_float16(0xFE00) | |
257 | #endif | |
258 | ||
158142c2 FB |
259 | /*---------------------------------------------------------------------------- |
260 | | Software IEC/IEEE single-precision conversion routines. | |
261 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 262 | int16 float32_to_int16_round_to_zero( float32 STATUS_PARAM ); |
cbcef455 | 263 | unsigned int float32_to_uint16_round_to_zero( float32 STATUS_PARAM ); |
87b8cc3c AF |
264 | int32 float32_to_int32( float32 STATUS_PARAM ); |
265 | int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM ); | |
266 | uint32 float32_to_uint32( float32 STATUS_PARAM ); | |
267 | uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM ); | |
268 | int64 float32_to_int64( float32 STATUS_PARAM ); | |
269 | int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM ); | |
158142c2 | 270 | float64 float32_to_float64( float32 STATUS_PARAM ); |
158142c2 | 271 | floatx80 float32_to_floatx80( float32 STATUS_PARAM ); |
158142c2 | 272 | float128 float32_to_float128( float32 STATUS_PARAM ); |
158142c2 FB |
273 | |
274 | /*---------------------------------------------------------------------------- | |
275 | | Software IEC/IEEE single-precision operations. | |
276 | *----------------------------------------------------------------------------*/ | |
277 | float32 float32_round_to_int( float32 STATUS_PARAM ); | |
278 | float32 float32_add( float32, float32 STATUS_PARAM ); | |
279 | float32 float32_sub( float32, float32 STATUS_PARAM ); | |
280 | float32 float32_mul( float32, float32 STATUS_PARAM ); | |
281 | float32 float32_div( float32, float32 STATUS_PARAM ); | |
282 | float32 float32_rem( float32, float32 STATUS_PARAM ); | |
283 | float32 float32_sqrt( float32 STATUS_PARAM ); | |
8229c991 | 284 | float32 float32_exp2( float32 STATUS_PARAM ); |
374dfc33 | 285 | float32 float32_log2( float32 STATUS_PARAM ); |
b689362d | 286 | int float32_eq( float32, float32 STATUS_PARAM ); |
750afe93 FB |
287 | int float32_le( float32, float32 STATUS_PARAM ); |
288 | int float32_lt( float32, float32 STATUS_PARAM ); | |
67b7861d | 289 | int float32_unordered( float32, float32 STATUS_PARAM ); |
b689362d | 290 | int float32_eq_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
291 | int float32_le_quiet( float32, float32 STATUS_PARAM ); |
292 | int float32_lt_quiet( float32, float32 STATUS_PARAM ); | |
67b7861d | 293 | int float32_unordered_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
294 | int float32_compare( float32, float32 STATUS_PARAM ); |
295 | int float32_compare_quiet( float32, float32 STATUS_PARAM ); | |
274f1b04 PM |
296 | float32 float32_min(float32, float32 STATUS_PARAM); |
297 | float32 float32_max(float32, float32 STATUS_PARAM); | |
18569871 | 298 | int float32_is_quiet_nan( float32 ); |
750afe93 | 299 | int float32_is_signaling_nan( float32 ); |
b408dbde | 300 | float32 float32_maybe_silence_nan( float32 ); |
9ee6e8bb | 301 | float32 float32_scalbn( float32, int STATUS_PARAM ); |
158142c2 | 302 | |
1d6bda35 FB |
303 | INLINE float32 float32_abs(float32 a) |
304 | { | |
37d18660 PM |
305 | /* Note that abs does *not* handle NaN specially, nor does |
306 | * it flush denormal inputs to zero. | |
307 | */ | |
f090c9d4 | 308 | return make_float32(float32_val(a) & 0x7fffffff); |
1d6bda35 FB |
309 | } |
310 | ||
311 | INLINE float32 float32_chs(float32 a) | |
312 | { | |
37d18660 PM |
313 | /* Note that chs does *not* handle NaN specially, nor does |
314 | * it flush denormal inputs to zero. | |
315 | */ | |
f090c9d4 | 316 | return make_float32(float32_val(a) ^ 0x80000000); |
1d6bda35 FB |
317 | } |
318 | ||
c52ab6f5 AJ |
319 | INLINE int float32_is_infinity(float32 a) |
320 | { | |
dadd71a7 | 321 | return (float32_val(a) & 0x7fffffff) == 0x7f800000; |
c52ab6f5 AJ |
322 | } |
323 | ||
324 | INLINE int float32_is_neg(float32 a) | |
325 | { | |
326 | return float32_val(a) >> 31; | |
327 | } | |
328 | ||
329 | INLINE int float32_is_zero(float32 a) | |
330 | { | |
331 | return (float32_val(a) & 0x7fffffff) == 0; | |
332 | } | |
333 | ||
21d6ebde PM |
334 | INLINE int float32_is_any_nan(float32 a) |
335 | { | |
336 | return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); | |
337 | } | |
338 | ||
6f3300ad PM |
339 | INLINE int float32_is_zero_or_denormal(float32 a) |
340 | { | |
341 | return (float32_val(a) & 0x7f800000) == 0; | |
342 | } | |
343 | ||
c30fe7df CL |
344 | INLINE float32 float32_set_sign(float32 a, int sign) |
345 | { | |
346 | return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31)); | |
347 | } | |
348 | ||
f090c9d4 | 349 | #define float32_zero make_float32(0) |
196cfc89 | 350 | #define float32_one make_float32(0x3f800000) |
8229c991 | 351 | #define float32_ln2 make_float32(0x3f317218) |
c4b4c77a | 352 | #define float32_pi make_float32(0x40490fdb) |
c30fe7df CL |
353 | #define float32_half make_float32(0x3f000000) |
354 | #define float32_infinity make_float32(0x7f800000) | |
f090c9d4 | 355 | |
8559666d CL |
356 | |
357 | /*---------------------------------------------------------------------------- | |
358 | | The pattern for a default generated single-precision NaN. | |
359 | *----------------------------------------------------------------------------*/ | |
360 | #if defined(TARGET_SPARC) | |
361 | #define float32_default_nan make_float32(0x7FFFFFFF) | |
362 | #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) | |
363 | #define float32_default_nan make_float32(0x7FC00000) | |
364 | #elif SNAN_BIT_IS_ONE | |
365 | #define float32_default_nan make_float32(0x7FBFFFFF) | |
366 | #else | |
367 | #define float32_default_nan make_float32(0xFFC00000) | |
368 | #endif | |
369 | ||
158142c2 FB |
370 | /*---------------------------------------------------------------------------- |
371 | | Software IEC/IEEE double-precision conversion routines. | |
372 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 373 | int16 float64_to_int16_round_to_zero( float64 STATUS_PARAM ); |
cbcef455 | 374 | unsigned int float64_to_uint16_round_to_zero( float64 STATUS_PARAM ); |
87b8cc3c AF |
375 | int32 float64_to_int32( float64 STATUS_PARAM ); |
376 | int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM ); | |
377 | uint32 float64_to_uint32( float64 STATUS_PARAM ); | |
378 | uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); | |
379 | int64 float64_to_int64( float64 STATUS_PARAM ); | |
380 | int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); | |
381 | uint64 float64_to_uint64 (float64 a STATUS_PARAM); | |
382 | uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); | |
158142c2 | 383 | float32 float64_to_float32( float64 STATUS_PARAM ); |
158142c2 | 384 | floatx80 float64_to_floatx80( float64 STATUS_PARAM ); |
158142c2 | 385 | float128 float64_to_float128( float64 STATUS_PARAM ); |
158142c2 FB |
386 | |
387 | /*---------------------------------------------------------------------------- | |
388 | | Software IEC/IEEE double-precision operations. | |
389 | *----------------------------------------------------------------------------*/ | |
390 | float64 float64_round_to_int( float64 STATUS_PARAM ); | |
e6e5906b | 391 | float64 float64_trunc_to_int( float64 STATUS_PARAM ); |
158142c2 FB |
392 | float64 float64_add( float64, float64 STATUS_PARAM ); |
393 | float64 float64_sub( float64, float64 STATUS_PARAM ); | |
394 | float64 float64_mul( float64, float64 STATUS_PARAM ); | |
395 | float64 float64_div( float64, float64 STATUS_PARAM ); | |
396 | float64 float64_rem( float64, float64 STATUS_PARAM ); | |
397 | float64 float64_sqrt( float64 STATUS_PARAM ); | |
374dfc33 | 398 | float64 float64_log2( float64 STATUS_PARAM ); |
b689362d | 399 | int float64_eq( float64, float64 STATUS_PARAM ); |
750afe93 FB |
400 | int float64_le( float64, float64 STATUS_PARAM ); |
401 | int float64_lt( float64, float64 STATUS_PARAM ); | |
67b7861d | 402 | int float64_unordered( float64, float64 STATUS_PARAM ); |
b689362d | 403 | int float64_eq_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
404 | int float64_le_quiet( float64, float64 STATUS_PARAM ); |
405 | int float64_lt_quiet( float64, float64 STATUS_PARAM ); | |
67b7861d | 406 | int float64_unordered_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
407 | int float64_compare( float64, float64 STATUS_PARAM ); |
408 | int float64_compare_quiet( float64, float64 STATUS_PARAM ); | |
274f1b04 PM |
409 | float64 float64_min(float64, float64 STATUS_PARAM); |
410 | float64 float64_max(float64, float64 STATUS_PARAM); | |
18569871 | 411 | int float64_is_quiet_nan( float64 a ); |
750afe93 | 412 | int float64_is_signaling_nan( float64 ); |
b408dbde | 413 | float64 float64_maybe_silence_nan( float64 ); |
9ee6e8bb | 414 | float64 float64_scalbn( float64, int STATUS_PARAM ); |
158142c2 | 415 | |
1d6bda35 FB |
416 | INLINE float64 float64_abs(float64 a) |
417 | { | |
37d18660 PM |
418 | /* Note that abs does *not* handle NaN specially, nor does |
419 | * it flush denormal inputs to zero. | |
420 | */ | |
f090c9d4 | 421 | return make_float64(float64_val(a) & 0x7fffffffffffffffLL); |
1d6bda35 FB |
422 | } |
423 | ||
424 | INLINE float64 float64_chs(float64 a) | |
425 | { | |
37d18660 PM |
426 | /* Note that chs does *not* handle NaN specially, nor does |
427 | * it flush denormal inputs to zero. | |
428 | */ | |
f090c9d4 | 429 | return make_float64(float64_val(a) ^ 0x8000000000000000LL); |
1d6bda35 FB |
430 | } |
431 | ||
c52ab6f5 AJ |
432 | INLINE int float64_is_infinity(float64 a) |
433 | { | |
434 | return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; | |
435 | } | |
436 | ||
437 | INLINE int float64_is_neg(float64 a) | |
438 | { | |
439 | return float64_val(a) >> 63; | |
440 | } | |
441 | ||
442 | INLINE int float64_is_zero(float64 a) | |
443 | { | |
444 | return (float64_val(a) & 0x7fffffffffffffffLL) == 0; | |
445 | } | |
446 | ||
21d6ebde PM |
447 | INLINE int float64_is_any_nan(float64 a) |
448 | { | |
449 | return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); | |
450 | } | |
451 | ||
587eabfa AJ |
452 | INLINE int float64_is_zero_or_denormal(float64 a) |
453 | { | |
454 | return (float64_val(a) & 0x7ff0000000000000LL) == 0; | |
455 | } | |
456 | ||
c30fe7df CL |
457 | INLINE float64 float64_set_sign(float64 a, int sign) |
458 | { | |
459 | return make_float64((float64_val(a) & 0x7fffffffffffffffULL) | |
460 | | ((int64_t)sign << 63)); | |
461 | } | |
462 | ||
f090c9d4 | 463 | #define float64_zero make_float64(0) |
196cfc89 | 464 | #define float64_one make_float64(0x3ff0000000000000LL) |
8229c991 | 465 | #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) |
c4b4c77a | 466 | #define float64_pi make_float64(0x400921fb54442d18LL) |
c30fe7df CL |
467 | #define float64_half make_float64(0x3fe0000000000000LL) |
468 | #define float64_infinity make_float64(0x7ff0000000000000LL) | |
f090c9d4 | 469 | |
8559666d CL |
470 | /*---------------------------------------------------------------------------- |
471 | | The pattern for a default generated double-precision NaN. | |
472 | *----------------------------------------------------------------------------*/ | |
473 | #if defined(TARGET_SPARC) | |
474 | #define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF )) | |
475 | #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) | |
476 | #define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 )) | |
477 | #elif SNAN_BIT_IS_ONE | |
478 | #define float64_default_nan make_float64(LIT64( 0x7FF7FFFFFFFFFFFF )) | |
479 | #else | |
480 | #define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 )) | |
481 | #endif | |
482 | ||
158142c2 FB |
483 | /*---------------------------------------------------------------------------- |
484 | | Software IEC/IEEE extended double-precision conversion routines. | |
485 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
486 | int32 floatx80_to_int32( floatx80 STATUS_PARAM ); |
487 | int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); | |
488 | int64 floatx80_to_int64( floatx80 STATUS_PARAM ); | |
489 | int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); | |
158142c2 FB |
490 | float32 floatx80_to_float32( floatx80 STATUS_PARAM ); |
491 | float64 floatx80_to_float64( floatx80 STATUS_PARAM ); | |
158142c2 | 492 | float128 floatx80_to_float128( floatx80 STATUS_PARAM ); |
158142c2 FB |
493 | |
494 | /*---------------------------------------------------------------------------- | |
495 | | Software IEC/IEEE extended double-precision operations. | |
496 | *----------------------------------------------------------------------------*/ | |
497 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); | |
498 | floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM ); | |
499 | floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM ); | |
500 | floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM ); | |
501 | floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM ); | |
502 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); | |
503 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); | |
b689362d | 504 | int floatx80_eq( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
505 | int floatx80_le( floatx80, floatx80 STATUS_PARAM ); |
506 | int floatx80_lt( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 507 | int floatx80_unordered( floatx80, floatx80 STATUS_PARAM ); |
b689362d | 508 | int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
509 | int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); |
510 | int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 511 | int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM ); |
f6714d36 AJ |
512 | int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); |
513 | int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); | |
18569871 | 514 | int floatx80_is_quiet_nan( floatx80 ); |
750afe93 | 515 | int floatx80_is_signaling_nan( floatx80 ); |
f6a7d92a | 516 | floatx80 floatx80_maybe_silence_nan( floatx80 ); |
9ee6e8bb | 517 | floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); |
158142c2 | 518 | |
1d6bda35 FB |
519 | INLINE floatx80 floatx80_abs(floatx80 a) |
520 | { | |
521 | a.high &= 0x7fff; | |
522 | return a; | |
523 | } | |
524 | ||
525 | INLINE floatx80 floatx80_chs(floatx80 a) | |
526 | { | |
527 | a.high ^= 0x8000; | |
528 | return a; | |
529 | } | |
530 | ||
c52ab6f5 AJ |
531 | INLINE int floatx80_is_infinity(floatx80 a) |
532 | { | |
b76235e4 | 533 | return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL; |
c52ab6f5 AJ |
534 | } |
535 | ||
536 | INLINE int floatx80_is_neg(floatx80 a) | |
537 | { | |
538 | return a.high >> 15; | |
539 | } | |
540 | ||
541 | INLINE int floatx80_is_zero(floatx80 a) | |
542 | { | |
543 | return (a.high & 0x7fff) == 0 && a.low == 0; | |
544 | } | |
545 | ||
587eabfa AJ |
546 | INLINE int floatx80_is_zero_or_denormal(floatx80 a) |
547 | { | |
548 | return (a.high & 0x7fff) == 0; | |
549 | } | |
550 | ||
2bed652f PM |
551 | INLINE int floatx80_is_any_nan(floatx80 a) |
552 | { | |
553 | return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); | |
554 | } | |
555 | ||
f3218a8d AJ |
556 | #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL) |
557 | #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL) | |
558 | #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL) | |
c4b4c77a | 559 | #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL) |
f3218a8d AJ |
560 | #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL) |
561 | #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL) | |
562 | ||
8559666d CL |
563 | /*---------------------------------------------------------------------------- |
564 | | The pattern for a default generated extended double-precision NaN. The | |
565 | | `high' and `low' values hold the most- and least-significant bits, | |
566 | | respectively. | |
567 | *----------------------------------------------------------------------------*/ | |
568 | #if SNAN_BIT_IS_ONE | |
569 | #define floatx80_default_nan_high 0x7FFF | |
570 | #define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF ) | |
571 | #else | |
572 | #define floatx80_default_nan_high 0xFFFF | |
573 | #define floatx80_default_nan_low LIT64( 0xC000000000000000 ) | |
574 | #endif | |
575 | ||
158142c2 FB |
576 | /*---------------------------------------------------------------------------- |
577 | | Software IEC/IEEE quadruple-precision conversion routines. | |
578 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
579 | int32 float128_to_int32( float128 STATUS_PARAM ); |
580 | int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM ); | |
581 | int64 float128_to_int64( float128 STATUS_PARAM ); | |
582 | int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); | |
158142c2 FB |
583 | float32 float128_to_float32( float128 STATUS_PARAM ); |
584 | float64 float128_to_float64( float128 STATUS_PARAM ); | |
158142c2 | 585 | floatx80 float128_to_floatx80( float128 STATUS_PARAM ); |
158142c2 FB |
586 | |
587 | /*---------------------------------------------------------------------------- | |
588 | | Software IEC/IEEE quadruple-precision operations. | |
589 | *----------------------------------------------------------------------------*/ | |
590 | float128 float128_round_to_int( float128 STATUS_PARAM ); | |
591 | float128 float128_add( float128, float128 STATUS_PARAM ); | |
592 | float128 float128_sub( float128, float128 STATUS_PARAM ); | |
593 | float128 float128_mul( float128, float128 STATUS_PARAM ); | |
594 | float128 float128_div( float128, float128 STATUS_PARAM ); | |
595 | float128 float128_rem( float128, float128 STATUS_PARAM ); | |
596 | float128 float128_sqrt( float128 STATUS_PARAM ); | |
b689362d | 597 | int float128_eq( float128, float128 STATUS_PARAM ); |
750afe93 FB |
598 | int float128_le( float128, float128 STATUS_PARAM ); |
599 | int float128_lt( float128, float128 STATUS_PARAM ); | |
67b7861d | 600 | int float128_unordered( float128, float128 STATUS_PARAM ); |
b689362d | 601 | int float128_eq_quiet( float128, float128 STATUS_PARAM ); |
750afe93 FB |
602 | int float128_le_quiet( float128, float128 STATUS_PARAM ); |
603 | int float128_lt_quiet( float128, float128 STATUS_PARAM ); | |
67b7861d | 604 | int float128_unordered_quiet( float128, float128 STATUS_PARAM ); |
1f587329 BS |
605 | int float128_compare( float128, float128 STATUS_PARAM ); |
606 | int float128_compare_quiet( float128, float128 STATUS_PARAM ); | |
18569871 | 607 | int float128_is_quiet_nan( float128 ); |
750afe93 | 608 | int float128_is_signaling_nan( float128 ); |
f6a7d92a | 609 | float128 float128_maybe_silence_nan( float128 ); |
9ee6e8bb | 610 | float128 float128_scalbn( float128, int STATUS_PARAM ); |
158142c2 | 611 | |
1d6bda35 FB |
612 | INLINE float128 float128_abs(float128 a) |
613 | { | |
614 | a.high &= 0x7fffffffffffffffLL; | |
615 | return a; | |
616 | } | |
617 | ||
618 | INLINE float128 float128_chs(float128 a) | |
619 | { | |
620 | a.high ^= 0x8000000000000000LL; | |
621 | return a; | |
622 | } | |
623 | ||
c52ab6f5 AJ |
624 | INLINE int float128_is_infinity(float128 a) |
625 | { | |
626 | return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; | |
627 | } | |
628 | ||
629 | INLINE int float128_is_neg(float128 a) | |
630 | { | |
631 | return a.high >> 63; | |
632 | } | |
633 | ||
634 | INLINE int float128_is_zero(float128 a) | |
635 | { | |
636 | return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; | |
637 | } | |
638 | ||
587eabfa AJ |
639 | INLINE int float128_is_zero_or_denormal(float128 a) |
640 | { | |
641 | return (a.high & 0x7fff000000000000LL) == 0; | |
642 | } | |
643 | ||
2bed652f PM |
644 | INLINE int float128_is_any_nan(float128 a) |
645 | { | |
646 | return ((a.high >> 48) & 0x7fff) == 0x7fff && | |
647 | ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); | |
648 | } | |
649 | ||
8559666d CL |
650 | /*---------------------------------------------------------------------------- |
651 | | The pattern for a default generated quadruple-precision NaN. The `high' and | |
652 | | `low' values hold the most- and least-significant bits, respectively. | |
653 | *----------------------------------------------------------------------------*/ | |
654 | #if SNAN_BIT_IS_ONE | |
655 | #define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF ) | |
656 | #define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF ) | |
657 | #else | |
658 | #define float128_default_nan_high LIT64( 0xFFFF800000000000 ) | |
659 | #define float128_default_nan_low LIT64( 0x0000000000000000 ) | |
660 | #endif | |
661 | ||
158142c2 | 662 | #endif /* !SOFTFLOAT_H */ |