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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" |
5aea4c58 | 47 | #include "osdep.h" |
158142c2 FB |
48 | |
49 | /*---------------------------------------------------------------------------- | |
50 | | Each of the following `typedef's defines the most convenient type that holds | |
51 | | integers of at least as many bits as specified. For example, `uint8' should | |
52 | | be the most convenient type that can hold unsigned integers of as many as | |
53 | | 8 bits. The `flag' type must be able to hold either a 0 or 1. For most | |
54 | | implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed | |
55 | | to the same as `int'. | |
56 | *----------------------------------------------------------------------------*/ | |
750afe93 | 57 | typedef uint8_t flag; |
158142c2 FB |
58 | typedef uint8_t uint8; |
59 | typedef int8_t int8; | |
158142c2 FB |
60 | typedef unsigned int uint32; |
61 | typedef signed int int32; | |
62 | typedef uint64_t uint64; | |
63 | typedef int64_t int64; | |
64 | ||
158142c2 FB |
65 | #define LIT64( a ) a##LL |
66 | #define INLINE static inline | |
67 | ||
158142c2 FB |
68 | #define STATUS_PARAM , float_status *status |
69 | #define STATUS(field) status->field | |
70 | #define STATUS_VAR , status | |
71 | ||
1d6bda35 FB |
72 | /*---------------------------------------------------------------------------- |
73 | | Software IEC/IEEE floating-point ordering relations | |
74 | *----------------------------------------------------------------------------*/ | |
75 | enum { | |
76 | float_relation_less = -1, | |
77 | float_relation_equal = 0, | |
78 | float_relation_greater = 1, | |
79 | float_relation_unordered = 2 | |
80 | }; | |
81 | ||
158142c2 FB |
82 | /*---------------------------------------------------------------------------- |
83 | | Software IEC/IEEE floating-point types. | |
84 | *----------------------------------------------------------------------------*/ | |
f090c9d4 PB |
85 | /* Use structures for soft-float types. This prevents accidentally mixing |
86 | them with native int/float types. A sufficiently clever compiler and | |
87 | sane ABI should be able to see though these structs. However | |
88 | x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */ | |
89 | //#define USE_SOFTFLOAT_STRUCT_TYPES | |
90 | #ifdef USE_SOFTFLOAT_STRUCT_TYPES | |
bb4d4bb3 PM |
91 | typedef struct { |
92 | uint16_t v; | |
93 | } float16; | |
94 | #define float16_val(x) (((float16)(x)).v) | |
95 | #define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; }) | |
d5138cf4 | 96 | #define const_float16(x) { x } |
f090c9d4 PB |
97 | typedef struct { |
98 | uint32_t v; | |
99 | } float32; | |
100 | /* The cast ensures an error if the wrong type is passed. */ | |
101 | #define float32_val(x) (((float32)(x)).v) | |
102 | #define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; }) | |
d5138cf4 | 103 | #define const_float32(x) { x } |
f090c9d4 PB |
104 | typedef struct { |
105 | uint64_t v; | |
106 | } float64; | |
107 | #define float64_val(x) (((float64)(x)).v) | |
108 | #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; }) | |
d5138cf4 | 109 | #define const_float64(x) { x } |
f090c9d4 | 110 | #else |
bb4d4bb3 | 111 | typedef uint16_t float16; |
158142c2 FB |
112 | typedef uint32_t float32; |
113 | typedef uint64_t float64; | |
bb4d4bb3 | 114 | #define float16_val(x) (x) |
f090c9d4 PB |
115 | #define float32_val(x) (x) |
116 | #define float64_val(x) (x) | |
bb4d4bb3 | 117 | #define make_float16(x) (x) |
f090c9d4 PB |
118 | #define make_float32(x) (x) |
119 | #define make_float64(x) (x) | |
d5138cf4 PM |
120 | #define const_float16(x) (x) |
121 | #define const_float32(x) (x) | |
122 | #define const_float64(x) (x) | |
f090c9d4 | 123 | #endif |
158142c2 FB |
124 | typedef struct { |
125 | uint64_t low; | |
126 | uint16_t high; | |
127 | } floatx80; | |
f3218a8d | 128 | #define make_floatx80(exp, mant) ((floatx80) { mant, exp }) |
3bf7e40a | 129 | #define make_floatx80_init(exp, mant) { .low = mant, .high = exp } |
158142c2 | 130 | typedef struct { |
e2542fe2 | 131 | #ifdef HOST_WORDS_BIGENDIAN |
158142c2 FB |
132 | uint64_t high, low; |
133 | #else | |
134 | uint64_t low, high; | |
135 | #endif | |
136 | } float128; | |
789ec7ce | 137 | #define make_float128(high_, low_) ((float128) { .high = high_, .low = low_ }) |
3bf7e40a | 138 | #define make_float128_init(high_, low_) { .high = high_, .low = low_ } |
158142c2 FB |
139 | |
140 | /*---------------------------------------------------------------------------- | |
141 | | Software IEC/IEEE floating-point underflow tininess-detection mode. | |
142 | *----------------------------------------------------------------------------*/ | |
143 | enum { | |
144 | float_tininess_after_rounding = 0, | |
145 | float_tininess_before_rounding = 1 | |
146 | }; | |
147 | ||
148 | /*---------------------------------------------------------------------------- | |
149 | | Software IEC/IEEE floating-point rounding mode. | |
150 | *----------------------------------------------------------------------------*/ | |
151 | enum { | |
152 | float_round_nearest_even = 0, | |
153 | float_round_down = 1, | |
154 | float_round_up = 2, | |
155 | float_round_to_zero = 3 | |
156 | }; | |
157 | ||
158 | /*---------------------------------------------------------------------------- | |
159 | | Software IEC/IEEE floating-point exception flags. | |
160 | *----------------------------------------------------------------------------*/ | |
161 | enum { | |
162 | float_flag_invalid = 1, | |
163 | float_flag_divbyzero = 4, | |
164 | float_flag_overflow = 8, | |
165 | float_flag_underflow = 16, | |
37d18660 | 166 | float_flag_inexact = 32, |
e6afc87f PM |
167 | float_flag_input_denormal = 64, |
168 | float_flag_output_denormal = 128 | |
158142c2 FB |
169 | }; |
170 | ||
171 | typedef struct float_status { | |
172 | signed char float_detect_tininess; | |
173 | signed char float_rounding_mode; | |
174 | signed char float_exception_flags; | |
158142c2 | 175 | signed char floatx80_rounding_precision; |
37d18660 | 176 | /* should denormalised results go to zero and set the inexact flag? */ |
fe76d976 | 177 | flag flush_to_zero; |
37d18660 PM |
178 | /* should denormalised inputs go to zero and set the input_denormal flag? */ |
179 | flag flush_inputs_to_zero; | |
5c7908ed | 180 | flag default_nan_mode; |
158142c2 FB |
181 | } float_status; |
182 | ||
183 | void set_float_rounding_mode(int val STATUS_PARAM); | |
1d6bda35 | 184 | void set_float_exception_flags(int val STATUS_PARAM); |
c29aca44 PM |
185 | INLINE void set_float_detect_tininess(int val STATUS_PARAM) |
186 | { | |
187 | STATUS(float_detect_tininess) = val; | |
188 | } | |
fe76d976 PB |
189 | INLINE void set_flush_to_zero(flag val STATUS_PARAM) |
190 | { | |
191 | STATUS(flush_to_zero) = val; | |
192 | } | |
37d18660 PM |
193 | INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM) |
194 | { | |
195 | STATUS(flush_inputs_to_zero) = val; | |
196 | } | |
5c7908ed PB |
197 | INLINE void set_default_nan_mode(flag val STATUS_PARAM) |
198 | { | |
199 | STATUS(default_nan_mode) = val; | |
200 | } | |
1d6bda35 FB |
201 | INLINE int get_float_exception_flags(float_status *status) |
202 | { | |
203 | return STATUS(float_exception_flags); | |
204 | } | |
158142c2 | 205 | void set_floatx80_rounding_precision(int val STATUS_PARAM); |
158142c2 FB |
206 | |
207 | /*---------------------------------------------------------------------------- | |
208 | | Routine to raise any or all of the software IEC/IEEE floating-point | |
209 | | exception flags. | |
210 | *----------------------------------------------------------------------------*/ | |
ec530c81 | 211 | void float_raise( int8 flags STATUS_PARAM); |
158142c2 | 212 | |
369be8f6 PM |
213 | /*---------------------------------------------------------------------------- |
214 | | Options to indicate which negations to perform in float*_muladd() | |
215 | | Using these differs from negating an input or output before calling | |
216 | | the muladd function in that this means that a NaN doesn't have its | |
217 | | sign bit inverted before it is propagated. | |
218 | *----------------------------------------------------------------------------*/ | |
219 | enum { | |
220 | float_muladd_negate_c = 1, | |
221 | float_muladd_negate_product = 2, | |
222 | float_muladd_negate_result = 3, | |
223 | }; | |
224 | ||
158142c2 FB |
225 | /*---------------------------------------------------------------------------- |
226 | | Software IEC/IEEE integer-to-floating-point conversion routines. | |
227 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
228 | float32 int32_to_float32( int32 STATUS_PARAM ); |
229 | float64 int32_to_float64( int32 STATUS_PARAM ); | |
9f8d2a09 AF |
230 | float32 uint32_to_float32( uint32 STATUS_PARAM ); |
231 | float64 uint32_to_float64( uint32 STATUS_PARAM ); | |
87b8cc3c | 232 | floatx80 int32_to_floatx80( int32 STATUS_PARAM ); |
87b8cc3c | 233 | float128 int32_to_float128( int32 STATUS_PARAM ); |
87b8cc3c AF |
234 | float32 int64_to_float32( int64 STATUS_PARAM ); |
235 | float32 uint64_to_float32( uint64 STATUS_PARAM ); | |
236 | float64 int64_to_float64( int64 STATUS_PARAM ); | |
237 | float64 uint64_to_float64( uint64 STATUS_PARAM ); | |
87b8cc3c | 238 | floatx80 int64_to_floatx80( int64 STATUS_PARAM ); |
87b8cc3c | 239 | float128 int64_to_float128( int64 STATUS_PARAM ); |
158142c2 | 240 | |
60011498 PB |
241 | /*---------------------------------------------------------------------------- |
242 | | Software half-precision conversion routines. | |
243 | *----------------------------------------------------------------------------*/ | |
bb4d4bb3 PM |
244 | float16 float32_to_float16( float32, flag STATUS_PARAM ); |
245 | float32 float16_to_float32( float16, flag STATUS_PARAM ); | |
246 | ||
247 | /*---------------------------------------------------------------------------- | |
248 | | Software half-precision operations. | |
249 | *----------------------------------------------------------------------------*/ | |
250 | int float16_is_quiet_nan( float16 ); | |
251 | int float16_is_signaling_nan( float16 ); | |
252 | float16 float16_maybe_silence_nan( float16 ); | |
60011498 | 253 | |
8559666d CL |
254 | /*---------------------------------------------------------------------------- |
255 | | The pattern for a default generated half-precision NaN. | |
256 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 257 | extern const float16 float16_default_nan; |
8559666d | 258 | |
158142c2 FB |
259 | /*---------------------------------------------------------------------------- |
260 | | Software IEC/IEEE single-precision conversion routines. | |
261 | *----------------------------------------------------------------------------*/ | |
94a49d86 | 262 | int_fast16_t float32_to_int16_round_to_zero(float32 STATUS_PARAM); |
5aea4c58 | 263 | uint_fast16_t 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 ); | |
369be8f6 | 283 | float32 float32_muladd(float32, float32, float32, int STATUS_PARAM); |
158142c2 | 284 | float32 float32_sqrt( float32 STATUS_PARAM ); |
8229c991 | 285 | float32 float32_exp2( float32 STATUS_PARAM ); |
374dfc33 | 286 | float32 float32_log2( float32 STATUS_PARAM ); |
b689362d | 287 | int float32_eq( float32, float32 STATUS_PARAM ); |
750afe93 FB |
288 | int float32_le( float32, float32 STATUS_PARAM ); |
289 | int float32_lt( float32, float32 STATUS_PARAM ); | |
67b7861d | 290 | int float32_unordered( float32, float32 STATUS_PARAM ); |
b689362d | 291 | int float32_eq_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
292 | int float32_le_quiet( float32, float32 STATUS_PARAM ); |
293 | int float32_lt_quiet( float32, float32 STATUS_PARAM ); | |
67b7861d | 294 | int float32_unordered_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
295 | int float32_compare( float32, float32 STATUS_PARAM ); |
296 | int float32_compare_quiet( float32, float32 STATUS_PARAM ); | |
274f1b04 PM |
297 | float32 float32_min(float32, float32 STATUS_PARAM); |
298 | float32 float32_max(float32, float32 STATUS_PARAM); | |
18569871 | 299 | int float32_is_quiet_nan( float32 ); |
750afe93 | 300 | int float32_is_signaling_nan( float32 ); |
b408dbde | 301 | float32 float32_maybe_silence_nan( float32 ); |
9ee6e8bb | 302 | float32 float32_scalbn( float32, int STATUS_PARAM ); |
158142c2 | 303 | |
1d6bda35 FB |
304 | INLINE float32 float32_abs(float32 a) |
305 | { | |
37d18660 PM |
306 | /* Note that abs does *not* handle NaN specially, nor does |
307 | * it flush denormal inputs to zero. | |
308 | */ | |
f090c9d4 | 309 | return make_float32(float32_val(a) & 0x7fffffff); |
1d6bda35 FB |
310 | } |
311 | ||
312 | INLINE float32 float32_chs(float32 a) | |
313 | { | |
37d18660 PM |
314 | /* Note that chs does *not* handle NaN specially, nor does |
315 | * it flush denormal inputs to zero. | |
316 | */ | |
f090c9d4 | 317 | return make_float32(float32_val(a) ^ 0x80000000); |
1d6bda35 FB |
318 | } |
319 | ||
c52ab6f5 AJ |
320 | INLINE int float32_is_infinity(float32 a) |
321 | { | |
dadd71a7 | 322 | return (float32_val(a) & 0x7fffffff) == 0x7f800000; |
c52ab6f5 AJ |
323 | } |
324 | ||
325 | INLINE int float32_is_neg(float32 a) | |
326 | { | |
327 | return float32_val(a) >> 31; | |
328 | } | |
329 | ||
330 | INLINE int float32_is_zero(float32 a) | |
331 | { | |
332 | return (float32_val(a) & 0x7fffffff) == 0; | |
333 | } | |
334 | ||
21d6ebde PM |
335 | INLINE int float32_is_any_nan(float32 a) |
336 | { | |
337 | return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); | |
338 | } | |
339 | ||
6f3300ad PM |
340 | INLINE int float32_is_zero_or_denormal(float32 a) |
341 | { | |
342 | return (float32_val(a) & 0x7f800000) == 0; | |
343 | } | |
344 | ||
c30fe7df CL |
345 | INLINE float32 float32_set_sign(float32 a, int sign) |
346 | { | |
347 | return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31)); | |
348 | } | |
349 | ||
f090c9d4 | 350 | #define float32_zero make_float32(0) |
196cfc89 | 351 | #define float32_one make_float32(0x3f800000) |
8229c991 | 352 | #define float32_ln2 make_float32(0x3f317218) |
c4b4c77a | 353 | #define float32_pi make_float32(0x40490fdb) |
c30fe7df CL |
354 | #define float32_half make_float32(0x3f000000) |
355 | #define float32_infinity make_float32(0x7f800000) | |
f090c9d4 | 356 | |
8559666d CL |
357 | |
358 | /*---------------------------------------------------------------------------- | |
359 | | The pattern for a default generated single-precision NaN. | |
360 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 361 | extern const float32 float32_default_nan; |
8559666d | 362 | |
158142c2 FB |
363 | /*---------------------------------------------------------------------------- |
364 | | Software IEC/IEEE double-precision conversion routines. | |
365 | *----------------------------------------------------------------------------*/ | |
94a49d86 | 366 | int_fast16_t float64_to_int16_round_to_zero(float64 STATUS_PARAM); |
5aea4c58 | 367 | uint_fast16_t float64_to_uint16_round_to_zero(float64 STATUS_PARAM); |
87b8cc3c AF |
368 | int32 float64_to_int32( float64 STATUS_PARAM ); |
369 | int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM ); | |
370 | uint32 float64_to_uint32( float64 STATUS_PARAM ); | |
371 | uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); | |
372 | int64 float64_to_int64( float64 STATUS_PARAM ); | |
373 | int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); | |
374 | uint64 float64_to_uint64 (float64 a STATUS_PARAM); | |
375 | uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); | |
158142c2 | 376 | float32 float64_to_float32( float64 STATUS_PARAM ); |
158142c2 | 377 | floatx80 float64_to_floatx80( float64 STATUS_PARAM ); |
158142c2 | 378 | float128 float64_to_float128( float64 STATUS_PARAM ); |
158142c2 FB |
379 | |
380 | /*---------------------------------------------------------------------------- | |
381 | | Software IEC/IEEE double-precision operations. | |
382 | *----------------------------------------------------------------------------*/ | |
383 | float64 float64_round_to_int( float64 STATUS_PARAM ); | |
e6e5906b | 384 | float64 float64_trunc_to_int( float64 STATUS_PARAM ); |
158142c2 FB |
385 | float64 float64_add( float64, float64 STATUS_PARAM ); |
386 | float64 float64_sub( float64, float64 STATUS_PARAM ); | |
387 | float64 float64_mul( float64, float64 STATUS_PARAM ); | |
388 | float64 float64_div( float64, float64 STATUS_PARAM ); | |
389 | float64 float64_rem( float64, float64 STATUS_PARAM ); | |
369be8f6 | 390 | float64 float64_muladd(float64, float64, float64, int STATUS_PARAM); |
158142c2 | 391 | float64 float64_sqrt( float64 STATUS_PARAM ); |
374dfc33 | 392 | float64 float64_log2( float64 STATUS_PARAM ); |
b689362d | 393 | int float64_eq( float64, float64 STATUS_PARAM ); |
750afe93 FB |
394 | int float64_le( float64, float64 STATUS_PARAM ); |
395 | int float64_lt( float64, float64 STATUS_PARAM ); | |
67b7861d | 396 | int float64_unordered( float64, float64 STATUS_PARAM ); |
b689362d | 397 | int float64_eq_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
398 | int float64_le_quiet( float64, float64 STATUS_PARAM ); |
399 | int float64_lt_quiet( float64, float64 STATUS_PARAM ); | |
67b7861d | 400 | int float64_unordered_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
401 | int float64_compare( float64, float64 STATUS_PARAM ); |
402 | int float64_compare_quiet( float64, float64 STATUS_PARAM ); | |
274f1b04 PM |
403 | float64 float64_min(float64, float64 STATUS_PARAM); |
404 | float64 float64_max(float64, float64 STATUS_PARAM); | |
18569871 | 405 | int float64_is_quiet_nan( float64 a ); |
750afe93 | 406 | int float64_is_signaling_nan( float64 ); |
b408dbde | 407 | float64 float64_maybe_silence_nan( float64 ); |
9ee6e8bb | 408 | float64 float64_scalbn( float64, int STATUS_PARAM ); |
158142c2 | 409 | |
1d6bda35 FB |
410 | INLINE float64 float64_abs(float64 a) |
411 | { | |
37d18660 PM |
412 | /* Note that abs does *not* handle NaN specially, nor does |
413 | * it flush denormal inputs to zero. | |
414 | */ | |
f090c9d4 | 415 | return make_float64(float64_val(a) & 0x7fffffffffffffffLL); |
1d6bda35 FB |
416 | } |
417 | ||
418 | INLINE float64 float64_chs(float64 a) | |
419 | { | |
37d18660 PM |
420 | /* Note that chs does *not* handle NaN specially, nor does |
421 | * it flush denormal inputs to zero. | |
422 | */ | |
f090c9d4 | 423 | return make_float64(float64_val(a) ^ 0x8000000000000000LL); |
1d6bda35 FB |
424 | } |
425 | ||
c52ab6f5 AJ |
426 | INLINE int float64_is_infinity(float64 a) |
427 | { | |
428 | return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; | |
429 | } | |
430 | ||
431 | INLINE int float64_is_neg(float64 a) | |
432 | { | |
433 | return float64_val(a) >> 63; | |
434 | } | |
435 | ||
436 | INLINE int float64_is_zero(float64 a) | |
437 | { | |
438 | return (float64_val(a) & 0x7fffffffffffffffLL) == 0; | |
439 | } | |
440 | ||
21d6ebde PM |
441 | INLINE int float64_is_any_nan(float64 a) |
442 | { | |
443 | return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); | |
444 | } | |
445 | ||
587eabfa AJ |
446 | INLINE int float64_is_zero_or_denormal(float64 a) |
447 | { | |
448 | return (float64_val(a) & 0x7ff0000000000000LL) == 0; | |
449 | } | |
450 | ||
c30fe7df CL |
451 | INLINE float64 float64_set_sign(float64 a, int sign) |
452 | { | |
453 | return make_float64((float64_val(a) & 0x7fffffffffffffffULL) | |
454 | | ((int64_t)sign << 63)); | |
455 | } | |
456 | ||
f090c9d4 | 457 | #define float64_zero make_float64(0) |
196cfc89 | 458 | #define float64_one make_float64(0x3ff0000000000000LL) |
8229c991 | 459 | #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) |
c4b4c77a | 460 | #define float64_pi make_float64(0x400921fb54442d18LL) |
c30fe7df CL |
461 | #define float64_half make_float64(0x3fe0000000000000LL) |
462 | #define float64_infinity make_float64(0x7ff0000000000000LL) | |
f090c9d4 | 463 | |
8559666d CL |
464 | /*---------------------------------------------------------------------------- |
465 | | The pattern for a default generated double-precision NaN. | |
466 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 467 | extern const float64 float64_default_nan; |
8559666d | 468 | |
158142c2 FB |
469 | /*---------------------------------------------------------------------------- |
470 | | Software IEC/IEEE extended double-precision conversion routines. | |
471 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
472 | int32 floatx80_to_int32( floatx80 STATUS_PARAM ); |
473 | int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); | |
474 | int64 floatx80_to_int64( floatx80 STATUS_PARAM ); | |
475 | int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); | |
158142c2 FB |
476 | float32 floatx80_to_float32( floatx80 STATUS_PARAM ); |
477 | float64 floatx80_to_float64( floatx80 STATUS_PARAM ); | |
158142c2 | 478 | float128 floatx80_to_float128( floatx80 STATUS_PARAM ); |
158142c2 FB |
479 | |
480 | /*---------------------------------------------------------------------------- | |
481 | | Software IEC/IEEE extended double-precision operations. | |
482 | *----------------------------------------------------------------------------*/ | |
483 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); | |
484 | floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM ); | |
485 | floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM ); | |
486 | floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM ); | |
487 | floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM ); | |
488 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); | |
489 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); | |
b689362d | 490 | int floatx80_eq( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
491 | int floatx80_le( floatx80, floatx80 STATUS_PARAM ); |
492 | int floatx80_lt( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 493 | int floatx80_unordered( floatx80, floatx80 STATUS_PARAM ); |
b689362d | 494 | int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
495 | int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); |
496 | int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 497 | int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM ); |
f6714d36 AJ |
498 | int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); |
499 | int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); | |
18569871 | 500 | int floatx80_is_quiet_nan( floatx80 ); |
750afe93 | 501 | int floatx80_is_signaling_nan( floatx80 ); |
f6a7d92a | 502 | floatx80 floatx80_maybe_silence_nan( floatx80 ); |
9ee6e8bb | 503 | floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); |
158142c2 | 504 | |
1d6bda35 FB |
505 | INLINE floatx80 floatx80_abs(floatx80 a) |
506 | { | |
507 | a.high &= 0x7fff; | |
508 | return a; | |
509 | } | |
510 | ||
511 | INLINE floatx80 floatx80_chs(floatx80 a) | |
512 | { | |
513 | a.high ^= 0x8000; | |
514 | return a; | |
515 | } | |
516 | ||
c52ab6f5 AJ |
517 | INLINE int floatx80_is_infinity(floatx80 a) |
518 | { | |
b76235e4 | 519 | return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL; |
c52ab6f5 AJ |
520 | } |
521 | ||
522 | INLINE int floatx80_is_neg(floatx80 a) | |
523 | { | |
524 | return a.high >> 15; | |
525 | } | |
526 | ||
527 | INLINE int floatx80_is_zero(floatx80 a) | |
528 | { | |
529 | return (a.high & 0x7fff) == 0 && a.low == 0; | |
530 | } | |
531 | ||
587eabfa AJ |
532 | INLINE int floatx80_is_zero_or_denormal(floatx80 a) |
533 | { | |
534 | return (a.high & 0x7fff) == 0; | |
535 | } | |
536 | ||
2bed652f PM |
537 | INLINE int floatx80_is_any_nan(floatx80 a) |
538 | { | |
539 | return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); | |
540 | } | |
541 | ||
f3218a8d AJ |
542 | #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL) |
543 | #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL) | |
544 | #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL) | |
c4b4c77a | 545 | #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL) |
f3218a8d AJ |
546 | #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL) |
547 | #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL) | |
548 | ||
8559666d | 549 | /*---------------------------------------------------------------------------- |
789ec7ce | 550 | | The pattern for a default generated extended double-precision NaN. |
8559666d | 551 | *----------------------------------------------------------------------------*/ |
789ec7ce | 552 | extern const floatx80 floatx80_default_nan; |
8559666d | 553 | |
158142c2 FB |
554 | /*---------------------------------------------------------------------------- |
555 | | Software IEC/IEEE quadruple-precision conversion routines. | |
556 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
557 | int32 float128_to_int32( float128 STATUS_PARAM ); |
558 | int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM ); | |
559 | int64 float128_to_int64( float128 STATUS_PARAM ); | |
560 | int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); | |
158142c2 FB |
561 | float32 float128_to_float32( float128 STATUS_PARAM ); |
562 | float64 float128_to_float64( float128 STATUS_PARAM ); | |
158142c2 | 563 | floatx80 float128_to_floatx80( float128 STATUS_PARAM ); |
158142c2 FB |
564 | |
565 | /*---------------------------------------------------------------------------- | |
566 | | Software IEC/IEEE quadruple-precision operations. | |
567 | *----------------------------------------------------------------------------*/ | |
568 | float128 float128_round_to_int( float128 STATUS_PARAM ); | |
569 | float128 float128_add( float128, float128 STATUS_PARAM ); | |
570 | float128 float128_sub( float128, float128 STATUS_PARAM ); | |
571 | float128 float128_mul( float128, float128 STATUS_PARAM ); | |
572 | float128 float128_div( float128, float128 STATUS_PARAM ); | |
573 | float128 float128_rem( float128, float128 STATUS_PARAM ); | |
574 | float128 float128_sqrt( float128 STATUS_PARAM ); | |
b689362d | 575 | int float128_eq( float128, float128 STATUS_PARAM ); |
750afe93 FB |
576 | int float128_le( float128, float128 STATUS_PARAM ); |
577 | int float128_lt( float128, float128 STATUS_PARAM ); | |
67b7861d | 578 | int float128_unordered( float128, float128 STATUS_PARAM ); |
b689362d | 579 | int float128_eq_quiet( float128, float128 STATUS_PARAM ); |
750afe93 FB |
580 | int float128_le_quiet( float128, float128 STATUS_PARAM ); |
581 | int float128_lt_quiet( float128, float128 STATUS_PARAM ); | |
67b7861d | 582 | int float128_unordered_quiet( float128, float128 STATUS_PARAM ); |
1f587329 BS |
583 | int float128_compare( float128, float128 STATUS_PARAM ); |
584 | int float128_compare_quiet( float128, float128 STATUS_PARAM ); | |
18569871 | 585 | int float128_is_quiet_nan( float128 ); |
750afe93 | 586 | int float128_is_signaling_nan( float128 ); |
f6a7d92a | 587 | float128 float128_maybe_silence_nan( float128 ); |
9ee6e8bb | 588 | float128 float128_scalbn( float128, int STATUS_PARAM ); |
158142c2 | 589 | |
1d6bda35 FB |
590 | INLINE float128 float128_abs(float128 a) |
591 | { | |
592 | a.high &= 0x7fffffffffffffffLL; | |
593 | return a; | |
594 | } | |
595 | ||
596 | INLINE float128 float128_chs(float128 a) | |
597 | { | |
598 | a.high ^= 0x8000000000000000LL; | |
599 | return a; | |
600 | } | |
601 | ||
c52ab6f5 AJ |
602 | INLINE int float128_is_infinity(float128 a) |
603 | { | |
604 | return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; | |
605 | } | |
606 | ||
607 | INLINE int float128_is_neg(float128 a) | |
608 | { | |
609 | return a.high >> 63; | |
610 | } | |
611 | ||
612 | INLINE int float128_is_zero(float128 a) | |
613 | { | |
614 | return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; | |
615 | } | |
616 | ||
587eabfa AJ |
617 | INLINE int float128_is_zero_or_denormal(float128 a) |
618 | { | |
619 | return (a.high & 0x7fff000000000000LL) == 0; | |
620 | } | |
621 | ||
2bed652f PM |
622 | INLINE int float128_is_any_nan(float128 a) |
623 | { | |
624 | return ((a.high >> 48) & 0x7fff) == 0x7fff && | |
625 | ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); | |
626 | } | |
627 | ||
8559666d | 628 | /*---------------------------------------------------------------------------- |
789ec7ce | 629 | | The pattern for a default generated quadruple-precision NaN. |
8559666d | 630 | *----------------------------------------------------------------------------*/ |
789ec7ce | 631 | extern const float128 float128_default_nan; |
8559666d | 632 | |
158142c2 | 633 | #endif /* !SOFTFLOAT_H */ |