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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 | 213 | |
369be8f6 PM |
214 | /*---------------------------------------------------------------------------- |
215 | | Options to indicate which negations to perform in float*_muladd() | |
216 | | Using these differs from negating an input or output before calling | |
217 | | the muladd function in that this means that a NaN doesn't have its | |
218 | | sign bit inverted before it is propagated. | |
219 | *----------------------------------------------------------------------------*/ | |
220 | enum { | |
221 | float_muladd_negate_c = 1, | |
222 | float_muladd_negate_product = 2, | |
223 | float_muladd_negate_result = 3, | |
224 | }; | |
225 | ||
158142c2 FB |
226 | /*---------------------------------------------------------------------------- |
227 | | Software IEC/IEEE integer-to-floating-point conversion routines. | |
228 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
229 | float32 int32_to_float32( int32 STATUS_PARAM ); |
230 | float64 int32_to_float64( int32 STATUS_PARAM ); | |
9f8d2a09 AF |
231 | float32 uint32_to_float32( uint32 STATUS_PARAM ); |
232 | float64 uint32_to_float64( uint32 STATUS_PARAM ); | |
87b8cc3c | 233 | floatx80 int32_to_floatx80( int32 STATUS_PARAM ); |
87b8cc3c | 234 | float128 int32_to_float128( int32 STATUS_PARAM ); |
87b8cc3c AF |
235 | float32 int64_to_float32( int64 STATUS_PARAM ); |
236 | float32 uint64_to_float32( uint64 STATUS_PARAM ); | |
237 | float64 int64_to_float64( int64 STATUS_PARAM ); | |
238 | float64 uint64_to_float64( uint64 STATUS_PARAM ); | |
87b8cc3c | 239 | floatx80 int64_to_floatx80( int64 STATUS_PARAM ); |
87b8cc3c | 240 | float128 int64_to_float128( int64 STATUS_PARAM ); |
158142c2 | 241 | |
60011498 PB |
242 | /*---------------------------------------------------------------------------- |
243 | | Software half-precision conversion routines. | |
244 | *----------------------------------------------------------------------------*/ | |
bb4d4bb3 PM |
245 | float16 float32_to_float16( float32, flag STATUS_PARAM ); |
246 | float32 float16_to_float32( float16, flag STATUS_PARAM ); | |
247 | ||
248 | /*---------------------------------------------------------------------------- | |
249 | | Software half-precision operations. | |
250 | *----------------------------------------------------------------------------*/ | |
251 | int float16_is_quiet_nan( float16 ); | |
252 | int float16_is_signaling_nan( float16 ); | |
253 | float16 float16_maybe_silence_nan( float16 ); | |
60011498 | 254 | |
8559666d CL |
255 | /*---------------------------------------------------------------------------- |
256 | | The pattern for a default generated half-precision NaN. | |
257 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 258 | extern const float16 float16_default_nan; |
8559666d | 259 | |
158142c2 FB |
260 | /*---------------------------------------------------------------------------- |
261 | | Software IEC/IEEE single-precision conversion routines. | |
262 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 263 | int16 float32_to_int16_round_to_zero( float32 STATUS_PARAM ); |
38641f8f | 264 | uint16 float32_to_uint16_round_to_zero( float32 STATUS_PARAM ); |
87b8cc3c AF |
265 | int32 float32_to_int32( float32 STATUS_PARAM ); |
266 | int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM ); | |
267 | uint32 float32_to_uint32( float32 STATUS_PARAM ); | |
268 | uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM ); | |
269 | int64 float32_to_int64( float32 STATUS_PARAM ); | |
270 | int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM ); | |
158142c2 | 271 | float64 float32_to_float64( float32 STATUS_PARAM ); |
158142c2 | 272 | floatx80 float32_to_floatx80( float32 STATUS_PARAM ); |
158142c2 | 273 | float128 float32_to_float128( float32 STATUS_PARAM ); |
158142c2 FB |
274 | |
275 | /*---------------------------------------------------------------------------- | |
276 | | Software IEC/IEEE single-precision operations. | |
277 | *----------------------------------------------------------------------------*/ | |
278 | float32 float32_round_to_int( float32 STATUS_PARAM ); | |
279 | float32 float32_add( float32, float32 STATUS_PARAM ); | |
280 | float32 float32_sub( float32, float32 STATUS_PARAM ); | |
281 | float32 float32_mul( float32, float32 STATUS_PARAM ); | |
282 | float32 float32_div( float32, float32 STATUS_PARAM ); | |
283 | float32 float32_rem( float32, float32 STATUS_PARAM ); | |
369be8f6 | 284 | float32 float32_muladd(float32, float32, float32, int STATUS_PARAM); |
158142c2 | 285 | float32 float32_sqrt( float32 STATUS_PARAM ); |
8229c991 | 286 | float32 float32_exp2( float32 STATUS_PARAM ); |
374dfc33 | 287 | float32 float32_log2( float32 STATUS_PARAM ); |
b689362d | 288 | int float32_eq( float32, float32 STATUS_PARAM ); |
750afe93 FB |
289 | int float32_le( float32, float32 STATUS_PARAM ); |
290 | int float32_lt( float32, float32 STATUS_PARAM ); | |
67b7861d | 291 | int float32_unordered( float32, float32 STATUS_PARAM ); |
b689362d | 292 | int float32_eq_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
293 | int float32_le_quiet( float32, float32 STATUS_PARAM ); |
294 | int float32_lt_quiet( float32, float32 STATUS_PARAM ); | |
67b7861d | 295 | int float32_unordered_quiet( float32, float32 STATUS_PARAM ); |
750afe93 FB |
296 | int float32_compare( float32, float32 STATUS_PARAM ); |
297 | int float32_compare_quiet( float32, float32 STATUS_PARAM ); | |
274f1b04 PM |
298 | float32 float32_min(float32, float32 STATUS_PARAM); |
299 | float32 float32_max(float32, float32 STATUS_PARAM); | |
18569871 | 300 | int float32_is_quiet_nan( float32 ); |
750afe93 | 301 | int float32_is_signaling_nan( float32 ); |
b408dbde | 302 | float32 float32_maybe_silence_nan( float32 ); |
9ee6e8bb | 303 | float32 float32_scalbn( float32, int STATUS_PARAM ); |
158142c2 | 304 | |
1d6bda35 FB |
305 | INLINE float32 float32_abs(float32 a) |
306 | { | |
37d18660 PM |
307 | /* Note that abs does *not* handle NaN specially, nor does |
308 | * it flush denormal inputs to zero. | |
309 | */ | |
f090c9d4 | 310 | return make_float32(float32_val(a) & 0x7fffffff); |
1d6bda35 FB |
311 | } |
312 | ||
313 | INLINE float32 float32_chs(float32 a) | |
314 | { | |
37d18660 PM |
315 | /* Note that chs does *not* handle NaN specially, nor does |
316 | * it flush denormal inputs to zero. | |
317 | */ | |
f090c9d4 | 318 | return make_float32(float32_val(a) ^ 0x80000000); |
1d6bda35 FB |
319 | } |
320 | ||
c52ab6f5 AJ |
321 | INLINE int float32_is_infinity(float32 a) |
322 | { | |
dadd71a7 | 323 | return (float32_val(a) & 0x7fffffff) == 0x7f800000; |
c52ab6f5 AJ |
324 | } |
325 | ||
326 | INLINE int float32_is_neg(float32 a) | |
327 | { | |
328 | return float32_val(a) >> 31; | |
329 | } | |
330 | ||
331 | INLINE int float32_is_zero(float32 a) | |
332 | { | |
333 | return (float32_val(a) & 0x7fffffff) == 0; | |
334 | } | |
335 | ||
21d6ebde PM |
336 | INLINE int float32_is_any_nan(float32 a) |
337 | { | |
338 | return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); | |
339 | } | |
340 | ||
6f3300ad PM |
341 | INLINE int float32_is_zero_or_denormal(float32 a) |
342 | { | |
343 | return (float32_val(a) & 0x7f800000) == 0; | |
344 | } | |
345 | ||
c30fe7df CL |
346 | INLINE float32 float32_set_sign(float32 a, int sign) |
347 | { | |
348 | return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31)); | |
349 | } | |
350 | ||
f090c9d4 | 351 | #define float32_zero make_float32(0) |
196cfc89 | 352 | #define float32_one make_float32(0x3f800000) |
8229c991 | 353 | #define float32_ln2 make_float32(0x3f317218) |
c4b4c77a | 354 | #define float32_pi make_float32(0x40490fdb) |
c30fe7df CL |
355 | #define float32_half make_float32(0x3f000000) |
356 | #define float32_infinity make_float32(0x7f800000) | |
f090c9d4 | 357 | |
8559666d CL |
358 | |
359 | /*---------------------------------------------------------------------------- | |
360 | | The pattern for a default generated single-precision NaN. | |
361 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 362 | extern const float32 float32_default_nan; |
8559666d | 363 | |
158142c2 FB |
364 | /*---------------------------------------------------------------------------- |
365 | | Software IEC/IEEE double-precision conversion routines. | |
366 | *----------------------------------------------------------------------------*/ | |
87b8cc3c | 367 | int16 float64_to_int16_round_to_zero( float64 STATUS_PARAM ); |
38641f8f | 368 | uint16 float64_to_uint16_round_to_zero( float64 STATUS_PARAM ); |
87b8cc3c AF |
369 | int32 float64_to_int32( float64 STATUS_PARAM ); |
370 | int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM ); | |
371 | uint32 float64_to_uint32( float64 STATUS_PARAM ); | |
372 | uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); | |
373 | int64 float64_to_int64( float64 STATUS_PARAM ); | |
374 | int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); | |
375 | uint64 float64_to_uint64 (float64 a STATUS_PARAM); | |
376 | uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); | |
158142c2 | 377 | float32 float64_to_float32( float64 STATUS_PARAM ); |
158142c2 | 378 | floatx80 float64_to_floatx80( float64 STATUS_PARAM ); |
158142c2 | 379 | float128 float64_to_float128( float64 STATUS_PARAM ); |
158142c2 FB |
380 | |
381 | /*---------------------------------------------------------------------------- | |
382 | | Software IEC/IEEE double-precision operations. | |
383 | *----------------------------------------------------------------------------*/ | |
384 | float64 float64_round_to_int( float64 STATUS_PARAM ); | |
e6e5906b | 385 | float64 float64_trunc_to_int( float64 STATUS_PARAM ); |
158142c2 FB |
386 | float64 float64_add( float64, float64 STATUS_PARAM ); |
387 | float64 float64_sub( float64, float64 STATUS_PARAM ); | |
388 | float64 float64_mul( float64, float64 STATUS_PARAM ); | |
389 | float64 float64_div( float64, float64 STATUS_PARAM ); | |
390 | float64 float64_rem( float64, float64 STATUS_PARAM ); | |
369be8f6 | 391 | float64 float64_muladd(float64, float64, float64, int STATUS_PARAM); |
158142c2 | 392 | float64 float64_sqrt( float64 STATUS_PARAM ); |
374dfc33 | 393 | float64 float64_log2( float64 STATUS_PARAM ); |
b689362d | 394 | int float64_eq( float64, float64 STATUS_PARAM ); |
750afe93 FB |
395 | int float64_le( float64, float64 STATUS_PARAM ); |
396 | int float64_lt( float64, float64 STATUS_PARAM ); | |
67b7861d | 397 | int float64_unordered( float64, float64 STATUS_PARAM ); |
b689362d | 398 | int float64_eq_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
399 | int float64_le_quiet( float64, float64 STATUS_PARAM ); |
400 | int float64_lt_quiet( float64, float64 STATUS_PARAM ); | |
67b7861d | 401 | int float64_unordered_quiet( float64, float64 STATUS_PARAM ); |
750afe93 FB |
402 | int float64_compare( float64, float64 STATUS_PARAM ); |
403 | int float64_compare_quiet( float64, float64 STATUS_PARAM ); | |
274f1b04 PM |
404 | float64 float64_min(float64, float64 STATUS_PARAM); |
405 | float64 float64_max(float64, float64 STATUS_PARAM); | |
18569871 | 406 | int float64_is_quiet_nan( float64 a ); |
750afe93 | 407 | int float64_is_signaling_nan( float64 ); |
b408dbde | 408 | float64 float64_maybe_silence_nan( float64 ); |
9ee6e8bb | 409 | float64 float64_scalbn( float64, int STATUS_PARAM ); |
158142c2 | 410 | |
1d6bda35 FB |
411 | INLINE float64 float64_abs(float64 a) |
412 | { | |
37d18660 PM |
413 | /* Note that abs does *not* handle NaN specially, nor does |
414 | * it flush denormal inputs to zero. | |
415 | */ | |
f090c9d4 | 416 | return make_float64(float64_val(a) & 0x7fffffffffffffffLL); |
1d6bda35 FB |
417 | } |
418 | ||
419 | INLINE float64 float64_chs(float64 a) | |
420 | { | |
37d18660 PM |
421 | /* Note that chs does *not* handle NaN specially, nor does |
422 | * it flush denormal inputs to zero. | |
423 | */ | |
f090c9d4 | 424 | return make_float64(float64_val(a) ^ 0x8000000000000000LL); |
1d6bda35 FB |
425 | } |
426 | ||
c52ab6f5 AJ |
427 | INLINE int float64_is_infinity(float64 a) |
428 | { | |
429 | return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; | |
430 | } | |
431 | ||
432 | INLINE int float64_is_neg(float64 a) | |
433 | { | |
434 | return float64_val(a) >> 63; | |
435 | } | |
436 | ||
437 | INLINE int float64_is_zero(float64 a) | |
438 | { | |
439 | return (float64_val(a) & 0x7fffffffffffffffLL) == 0; | |
440 | } | |
441 | ||
21d6ebde PM |
442 | INLINE int float64_is_any_nan(float64 a) |
443 | { | |
444 | return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); | |
445 | } | |
446 | ||
587eabfa AJ |
447 | INLINE int float64_is_zero_or_denormal(float64 a) |
448 | { | |
449 | return (float64_val(a) & 0x7ff0000000000000LL) == 0; | |
450 | } | |
451 | ||
c30fe7df CL |
452 | INLINE float64 float64_set_sign(float64 a, int sign) |
453 | { | |
454 | return make_float64((float64_val(a) & 0x7fffffffffffffffULL) | |
455 | | ((int64_t)sign << 63)); | |
456 | } | |
457 | ||
f090c9d4 | 458 | #define float64_zero make_float64(0) |
196cfc89 | 459 | #define float64_one make_float64(0x3ff0000000000000LL) |
8229c991 | 460 | #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) |
c4b4c77a | 461 | #define float64_pi make_float64(0x400921fb54442d18LL) |
c30fe7df CL |
462 | #define float64_half make_float64(0x3fe0000000000000LL) |
463 | #define float64_infinity make_float64(0x7ff0000000000000LL) | |
f090c9d4 | 464 | |
8559666d CL |
465 | /*---------------------------------------------------------------------------- |
466 | | The pattern for a default generated double-precision NaN. | |
467 | *----------------------------------------------------------------------------*/ | |
789ec7ce | 468 | extern const float64 float64_default_nan; |
8559666d | 469 | |
158142c2 FB |
470 | /*---------------------------------------------------------------------------- |
471 | | Software IEC/IEEE extended double-precision conversion routines. | |
472 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
473 | int32 floatx80_to_int32( floatx80 STATUS_PARAM ); |
474 | int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); | |
475 | int64 floatx80_to_int64( floatx80 STATUS_PARAM ); | |
476 | int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); | |
158142c2 FB |
477 | float32 floatx80_to_float32( floatx80 STATUS_PARAM ); |
478 | float64 floatx80_to_float64( floatx80 STATUS_PARAM ); | |
158142c2 | 479 | float128 floatx80_to_float128( floatx80 STATUS_PARAM ); |
158142c2 FB |
480 | |
481 | /*---------------------------------------------------------------------------- | |
482 | | Software IEC/IEEE extended double-precision operations. | |
483 | *----------------------------------------------------------------------------*/ | |
484 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); | |
485 | floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM ); | |
486 | floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM ); | |
487 | floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM ); | |
488 | floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM ); | |
489 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); | |
490 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); | |
b689362d | 491 | int floatx80_eq( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
492 | int floatx80_le( floatx80, floatx80 STATUS_PARAM ); |
493 | int floatx80_lt( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 494 | int floatx80_unordered( floatx80, floatx80 STATUS_PARAM ); |
b689362d | 495 | int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM ); |
750afe93 FB |
496 | int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); |
497 | int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); | |
67b7861d | 498 | int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM ); |
f6714d36 AJ |
499 | int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); |
500 | int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); | |
18569871 | 501 | int floatx80_is_quiet_nan( floatx80 ); |
750afe93 | 502 | int floatx80_is_signaling_nan( floatx80 ); |
f6a7d92a | 503 | floatx80 floatx80_maybe_silence_nan( floatx80 ); |
9ee6e8bb | 504 | floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); |
158142c2 | 505 | |
1d6bda35 FB |
506 | INLINE floatx80 floatx80_abs(floatx80 a) |
507 | { | |
508 | a.high &= 0x7fff; | |
509 | return a; | |
510 | } | |
511 | ||
512 | INLINE floatx80 floatx80_chs(floatx80 a) | |
513 | { | |
514 | a.high ^= 0x8000; | |
515 | return a; | |
516 | } | |
517 | ||
c52ab6f5 AJ |
518 | INLINE int floatx80_is_infinity(floatx80 a) |
519 | { | |
b76235e4 | 520 | return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL; |
c52ab6f5 AJ |
521 | } |
522 | ||
523 | INLINE int floatx80_is_neg(floatx80 a) | |
524 | { | |
525 | return a.high >> 15; | |
526 | } | |
527 | ||
528 | INLINE int floatx80_is_zero(floatx80 a) | |
529 | { | |
530 | return (a.high & 0x7fff) == 0 && a.low == 0; | |
531 | } | |
532 | ||
587eabfa AJ |
533 | INLINE int floatx80_is_zero_or_denormal(floatx80 a) |
534 | { | |
535 | return (a.high & 0x7fff) == 0; | |
536 | } | |
537 | ||
2bed652f PM |
538 | INLINE int floatx80_is_any_nan(floatx80 a) |
539 | { | |
540 | return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); | |
541 | } | |
542 | ||
f3218a8d AJ |
543 | #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL) |
544 | #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL) | |
545 | #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL) | |
c4b4c77a | 546 | #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL) |
f3218a8d AJ |
547 | #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL) |
548 | #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL) | |
549 | ||
8559666d | 550 | /*---------------------------------------------------------------------------- |
789ec7ce | 551 | | The pattern for a default generated extended double-precision NaN. |
8559666d | 552 | *----------------------------------------------------------------------------*/ |
789ec7ce | 553 | extern const floatx80 floatx80_default_nan; |
8559666d | 554 | |
158142c2 FB |
555 | /*---------------------------------------------------------------------------- |
556 | | Software IEC/IEEE quadruple-precision conversion routines. | |
557 | *----------------------------------------------------------------------------*/ | |
87b8cc3c AF |
558 | int32 float128_to_int32( float128 STATUS_PARAM ); |
559 | int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM ); | |
560 | int64 float128_to_int64( float128 STATUS_PARAM ); | |
561 | int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); | |
158142c2 FB |
562 | float32 float128_to_float32( float128 STATUS_PARAM ); |
563 | float64 float128_to_float64( float128 STATUS_PARAM ); | |
158142c2 | 564 | floatx80 float128_to_floatx80( float128 STATUS_PARAM ); |
158142c2 FB |
565 | |
566 | /*---------------------------------------------------------------------------- | |
567 | | Software IEC/IEEE quadruple-precision operations. | |
568 | *----------------------------------------------------------------------------*/ | |
569 | float128 float128_round_to_int( float128 STATUS_PARAM ); | |
570 | float128 float128_add( float128, float128 STATUS_PARAM ); | |
571 | float128 float128_sub( float128, float128 STATUS_PARAM ); | |
572 | float128 float128_mul( float128, float128 STATUS_PARAM ); | |
573 | float128 float128_div( float128, float128 STATUS_PARAM ); | |
574 | float128 float128_rem( float128, float128 STATUS_PARAM ); | |
575 | float128 float128_sqrt( float128 STATUS_PARAM ); | |
b689362d | 576 | int float128_eq( float128, float128 STATUS_PARAM ); |
750afe93 FB |
577 | int float128_le( float128, float128 STATUS_PARAM ); |
578 | int float128_lt( float128, float128 STATUS_PARAM ); | |
67b7861d | 579 | int float128_unordered( float128, float128 STATUS_PARAM ); |
b689362d | 580 | int float128_eq_quiet( float128, float128 STATUS_PARAM ); |
750afe93 FB |
581 | int float128_le_quiet( float128, float128 STATUS_PARAM ); |
582 | int float128_lt_quiet( float128, float128 STATUS_PARAM ); | |
67b7861d | 583 | int float128_unordered_quiet( float128, float128 STATUS_PARAM ); |
1f587329 BS |
584 | int float128_compare( float128, float128 STATUS_PARAM ); |
585 | int float128_compare_quiet( float128, float128 STATUS_PARAM ); | |
18569871 | 586 | int float128_is_quiet_nan( float128 ); |
750afe93 | 587 | int float128_is_signaling_nan( float128 ); |
f6a7d92a | 588 | float128 float128_maybe_silence_nan( float128 ); |
9ee6e8bb | 589 | float128 float128_scalbn( float128, int STATUS_PARAM ); |
158142c2 | 590 | |
1d6bda35 FB |
591 | INLINE float128 float128_abs(float128 a) |
592 | { | |
593 | a.high &= 0x7fffffffffffffffLL; | |
594 | return a; | |
595 | } | |
596 | ||
597 | INLINE float128 float128_chs(float128 a) | |
598 | { | |
599 | a.high ^= 0x8000000000000000LL; | |
600 | return a; | |
601 | } | |
602 | ||
c52ab6f5 AJ |
603 | INLINE int float128_is_infinity(float128 a) |
604 | { | |
605 | return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; | |
606 | } | |
607 | ||
608 | INLINE int float128_is_neg(float128 a) | |
609 | { | |
610 | return a.high >> 63; | |
611 | } | |
612 | ||
613 | INLINE int float128_is_zero(float128 a) | |
614 | { | |
615 | return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; | |
616 | } | |
617 | ||
587eabfa AJ |
618 | INLINE int float128_is_zero_or_denormal(float128 a) |
619 | { | |
620 | return (a.high & 0x7fff000000000000LL) == 0; | |
621 | } | |
622 | ||
2bed652f PM |
623 | INLINE int float128_is_any_nan(float128 a) |
624 | { | |
625 | return ((a.high >> 48) & 0x7fff) == 0x7fff && | |
626 | ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); | |
627 | } | |
628 | ||
8559666d | 629 | /*---------------------------------------------------------------------------- |
789ec7ce | 630 | | The pattern for a default generated quadruple-precision NaN. |
8559666d | 631 | *----------------------------------------------------------------------------*/ |
789ec7ce | 632 | extern const float128 float128_default_nan; |
8559666d | 633 | |
158142c2 | 634 | #endif /* !SOFTFLOAT_H */ |