4 * Derived from SoftFloat.
7 /*============================================================================
9 This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
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'.
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.
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.
36 =============================================================================*/
41 #if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH)
46 #include "config-host.h"
47 #include "qemu/osdep.h"
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 *----------------------------------------------------------------------------*/
58 typedef uint8_t uint8;
60 typedef unsigned int uint32;
61 typedef signed int int32;
62 typedef uint64_t uint64;
63 typedef int64_t int64;
65 #define LIT64( a ) a##LL
66 #define INLINE static inline
68 #define STATUS_PARAM , float_status *status
69 #define STATUS(field) status->field
70 #define STATUS_VAR , status
72 /*----------------------------------------------------------------------------
73 | Software IEC/IEEE floating-point ordering relations
74 *----------------------------------------------------------------------------*/
76 float_relation_less = -1,
77 float_relation_equal = 0,
78 float_relation_greater = 1,
79 float_relation_unordered = 2
82 /*----------------------------------------------------------------------------
83 | Software IEC/IEEE floating-point types.
84 *----------------------------------------------------------------------------*/
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
94 #define float16_val(x) (((float16)(x)).v)
95 #define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; })
96 #define const_float16(x) { x }
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; })
103 #define const_float32(x) { x }
107 #define float64_val(x) (((float64)(x)).v)
108 #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; })
109 #define const_float64(x) { x }
111 typedef uint16_t float16;
112 typedef uint32_t float32;
113 typedef uint64_t float64;
114 #define float16_val(x) (x)
115 #define float32_val(x) (x)
116 #define float64_val(x) (x)
117 #define make_float16(x) (x)
118 #define make_float32(x) (x)
119 #define make_float64(x) (x)
120 #define const_float16(x) (x)
121 #define const_float32(x) (x)
122 #define const_float64(x) (x)
128 #define make_floatx80(exp, mant) ((floatx80) { mant, exp })
129 #define make_floatx80_init(exp, mant) { .low = mant, .high = exp }
131 #ifdef HOST_WORDS_BIGENDIAN
137 #define make_float128(high_, low_) ((float128) { .high = high_, .low = low_ })
138 #define make_float128_init(high_, low_) { .high = high_, .low = low_ }
140 /*----------------------------------------------------------------------------
141 | Software IEC/IEEE floating-point underflow tininess-detection mode.
142 *----------------------------------------------------------------------------*/
144 float_tininess_after_rounding = 0,
145 float_tininess_before_rounding = 1
148 /*----------------------------------------------------------------------------
149 | Software IEC/IEEE floating-point rounding mode.
150 *----------------------------------------------------------------------------*/
152 float_round_nearest_even = 0,
153 float_round_down = 1,
155 float_round_to_zero = 3,
156 float_round_ties_away = 4,
159 /*----------------------------------------------------------------------------
160 | Software IEC/IEEE floating-point exception flags.
161 *----------------------------------------------------------------------------*/
163 float_flag_invalid = 1,
164 float_flag_divbyzero = 4,
165 float_flag_overflow = 8,
166 float_flag_underflow = 16,
167 float_flag_inexact = 32,
168 float_flag_input_denormal = 64,
169 float_flag_output_denormal = 128
172 typedef struct float_status {
173 signed char float_detect_tininess;
174 signed char float_rounding_mode;
175 signed char float_exception_flags;
176 signed char floatx80_rounding_precision;
177 /* should denormalised results go to zero and set the inexact flag? */
179 /* should denormalised inputs go to zero and set the input_denormal flag? */
180 flag flush_inputs_to_zero;
181 flag default_nan_mode;
184 INLINE void set_float_detect_tininess(int val STATUS_PARAM)
186 STATUS(float_detect_tininess) = val;
188 INLINE void set_float_rounding_mode(int val STATUS_PARAM)
190 STATUS(float_rounding_mode) = val;
192 INLINE void set_float_exception_flags(int val STATUS_PARAM)
194 STATUS(float_exception_flags) = val;
196 INLINE void set_floatx80_rounding_precision(int val STATUS_PARAM)
198 STATUS(floatx80_rounding_precision) = val;
200 INLINE void set_flush_to_zero(flag val STATUS_PARAM)
202 STATUS(flush_to_zero) = val;
204 INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM)
206 STATUS(flush_inputs_to_zero) = val;
208 INLINE void set_default_nan_mode(flag val STATUS_PARAM)
210 STATUS(default_nan_mode) = val;
212 INLINE int get_float_detect_tininess(float_status *status)
214 return STATUS(float_detect_tininess);
216 INLINE int get_float_rounding_mode(float_status *status)
218 return STATUS(float_rounding_mode);
220 INLINE int get_float_exception_flags(float_status *status)
222 return STATUS(float_exception_flags);
224 INLINE int get_floatx80_rounding_precision(float_status *status)
226 return STATUS(floatx80_rounding_precision);
228 INLINE flag get_flush_to_zero(float_status *status)
230 return STATUS(flush_to_zero);
232 INLINE flag get_flush_inputs_to_zero(float_status *status)
234 return STATUS(flush_inputs_to_zero);
236 INLINE flag get_default_nan_mode(float_status *status)
238 return STATUS(default_nan_mode);
241 /*----------------------------------------------------------------------------
242 | Routine to raise any or all of the software IEC/IEEE floating-point
244 *----------------------------------------------------------------------------*/
245 void float_raise( int8 flags STATUS_PARAM);
247 /*----------------------------------------------------------------------------
248 | Options to indicate which negations to perform in float*_muladd()
249 | Using these differs from negating an input or output before calling
250 | the muladd function in that this means that a NaN doesn't have its
251 | sign bit inverted before it is propagated.
252 | We also support halving the result before rounding, as a special
253 | case to support the ARM fused-sqrt-step instruction FRSQRTS.
254 *----------------------------------------------------------------------------*/
256 float_muladd_negate_c = 1,
257 float_muladd_negate_product = 2,
258 float_muladd_negate_result = 4,
259 float_muladd_halve_result = 8,
262 /*----------------------------------------------------------------------------
263 | Software IEC/IEEE integer-to-floating-point conversion routines.
264 *----------------------------------------------------------------------------*/
265 float32 int32_to_float32(int32_t STATUS_PARAM);
266 float64 int32_to_float64(int32_t STATUS_PARAM);
267 float32 uint32_to_float32(uint32_t STATUS_PARAM);
268 float64 uint32_to_float64(uint32_t STATUS_PARAM);
269 floatx80 int32_to_floatx80(int32_t STATUS_PARAM);
270 float128 int32_to_float128(int32_t STATUS_PARAM);
271 float32 int64_to_float32(int64_t STATUS_PARAM);
272 float32 uint64_to_float32(uint64_t STATUS_PARAM);
273 float64 int64_to_float64(int64_t STATUS_PARAM);
274 float64 uint64_to_float64(uint64_t STATUS_PARAM);
275 floatx80 int64_to_floatx80(int64_t STATUS_PARAM);
276 float128 int64_to_float128(int64_t STATUS_PARAM);
277 float128 uint64_to_float128(uint64_t STATUS_PARAM);
279 /* We provide the int16 versions for symmetry of API with float-to-int */
280 INLINE float32 int16_to_float32(int16_t v STATUS_PARAM)
282 return int32_to_float32(v STATUS_VAR);
285 INLINE float32 uint16_to_float32(uint16_t v STATUS_PARAM)
287 return uint32_to_float32(v STATUS_VAR);
290 INLINE float64 int16_to_float64(int16_t v STATUS_PARAM)
292 return int32_to_float64(v STATUS_VAR);
295 INLINE float64 uint16_to_float64(uint16_t v STATUS_PARAM)
297 return uint32_to_float64(v STATUS_VAR);
300 /*----------------------------------------------------------------------------
301 | Software half-precision conversion routines.
302 *----------------------------------------------------------------------------*/
303 float16 float32_to_float16( float32, flag STATUS_PARAM );
304 float32 float16_to_float32( float16, flag STATUS_PARAM );
305 float16 float64_to_float16(float64 a, flag ieee STATUS_PARAM);
306 float64 float16_to_float64(float16 a, flag ieee STATUS_PARAM);
308 /*----------------------------------------------------------------------------
309 | Software half-precision operations.
310 *----------------------------------------------------------------------------*/
311 int float16_is_quiet_nan( float16 );
312 int float16_is_signaling_nan( float16 );
313 float16 float16_maybe_silence_nan( float16 );
315 INLINE int float16_is_any_nan(float16 a)
317 return ((float16_val(a) & ~0x8000) > 0x7c00);
320 /*----------------------------------------------------------------------------
321 | The pattern for a default generated half-precision NaN.
322 *----------------------------------------------------------------------------*/
323 extern const float16 float16_default_nan;
325 /*----------------------------------------------------------------------------
326 | Software IEC/IEEE single-precision conversion routines.
327 *----------------------------------------------------------------------------*/
328 int_fast16_t float32_to_int16(float32 STATUS_PARAM);
329 uint_fast16_t float32_to_uint16(float32 STATUS_PARAM);
330 int_fast16_t float32_to_int16_round_to_zero(float32 STATUS_PARAM);
331 uint_fast16_t float32_to_uint16_round_to_zero(float32 STATUS_PARAM);
332 int32 float32_to_int32( float32 STATUS_PARAM );
333 int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM );
334 uint32 float32_to_uint32( float32 STATUS_PARAM );
335 uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
336 int64 float32_to_int64( float32 STATUS_PARAM );
337 uint64 float32_to_uint64(float32 STATUS_PARAM);
338 int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM );
339 float64 float32_to_float64( float32 STATUS_PARAM );
340 floatx80 float32_to_floatx80( float32 STATUS_PARAM );
341 float128 float32_to_float128( float32 STATUS_PARAM );
343 /*----------------------------------------------------------------------------
344 | Software IEC/IEEE single-precision operations.
345 *----------------------------------------------------------------------------*/
346 float32 float32_round_to_int( float32 STATUS_PARAM );
347 float32 float32_add( float32, float32 STATUS_PARAM );
348 float32 float32_sub( float32, float32 STATUS_PARAM );
349 float32 float32_mul( float32, float32 STATUS_PARAM );
350 float32 float32_div( float32, float32 STATUS_PARAM );
351 float32 float32_rem( float32, float32 STATUS_PARAM );
352 float32 float32_muladd(float32, float32, float32, int STATUS_PARAM);
353 float32 float32_sqrt( float32 STATUS_PARAM );
354 float32 float32_exp2( float32 STATUS_PARAM );
355 float32 float32_log2( float32 STATUS_PARAM );
356 int float32_eq( float32, float32 STATUS_PARAM );
357 int float32_le( float32, float32 STATUS_PARAM );
358 int float32_lt( float32, float32 STATUS_PARAM );
359 int float32_unordered( float32, float32 STATUS_PARAM );
360 int float32_eq_quiet( float32, float32 STATUS_PARAM );
361 int float32_le_quiet( float32, float32 STATUS_PARAM );
362 int float32_lt_quiet( float32, float32 STATUS_PARAM );
363 int float32_unordered_quiet( float32, float32 STATUS_PARAM );
364 int float32_compare( float32, float32 STATUS_PARAM );
365 int float32_compare_quiet( float32, float32 STATUS_PARAM );
366 float32 float32_min(float32, float32 STATUS_PARAM);
367 float32 float32_max(float32, float32 STATUS_PARAM);
368 float32 float32_minnum(float32, float32 STATUS_PARAM);
369 float32 float32_maxnum(float32, float32 STATUS_PARAM);
370 int float32_is_quiet_nan( float32 );
371 int float32_is_signaling_nan( float32 );
372 float32 float32_maybe_silence_nan( float32 );
373 float32 float32_scalbn( float32, int STATUS_PARAM );
375 INLINE float32 float32_abs(float32 a)
377 /* Note that abs does *not* handle NaN specially, nor does
378 * it flush denormal inputs to zero.
380 return make_float32(float32_val(a) & 0x7fffffff);
383 INLINE float32 float32_chs(float32 a)
385 /* Note that chs does *not* handle NaN specially, nor does
386 * it flush denormal inputs to zero.
388 return make_float32(float32_val(a) ^ 0x80000000);
391 INLINE int float32_is_infinity(float32 a)
393 return (float32_val(a) & 0x7fffffff) == 0x7f800000;
396 INLINE int float32_is_neg(float32 a)
398 return float32_val(a) >> 31;
401 INLINE int float32_is_zero(float32 a)
403 return (float32_val(a) & 0x7fffffff) == 0;
406 INLINE int float32_is_any_nan(float32 a)
408 return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL);
411 INLINE int float32_is_zero_or_denormal(float32 a)
413 return (float32_val(a) & 0x7f800000) == 0;
416 INLINE float32 float32_set_sign(float32 a, int sign)
418 return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31));
421 #define float32_zero make_float32(0)
422 #define float32_one make_float32(0x3f800000)
423 #define float32_ln2 make_float32(0x3f317218)
424 #define float32_pi make_float32(0x40490fdb)
425 #define float32_half make_float32(0x3f000000)
426 #define float32_infinity make_float32(0x7f800000)
429 /*----------------------------------------------------------------------------
430 | The pattern for a default generated single-precision NaN.
431 *----------------------------------------------------------------------------*/
432 extern const float32 float32_default_nan;
434 /*----------------------------------------------------------------------------
435 | Software IEC/IEEE double-precision conversion routines.
436 *----------------------------------------------------------------------------*/
437 int_fast16_t float64_to_int16(float64 STATUS_PARAM);
438 uint_fast16_t float64_to_uint16(float64 STATUS_PARAM);
439 int_fast16_t float64_to_int16_round_to_zero(float64 STATUS_PARAM);
440 uint_fast16_t float64_to_uint16_round_to_zero(float64 STATUS_PARAM);
441 int32 float64_to_int32( float64 STATUS_PARAM );
442 int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM );
443 uint32 float64_to_uint32( float64 STATUS_PARAM );
444 uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
445 int64 float64_to_int64( float64 STATUS_PARAM );
446 int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM );
447 uint64 float64_to_uint64 (float64 a STATUS_PARAM);
448 uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM);
449 float32 float64_to_float32( float64 STATUS_PARAM );
450 floatx80 float64_to_floatx80( float64 STATUS_PARAM );
451 float128 float64_to_float128( float64 STATUS_PARAM );
453 /*----------------------------------------------------------------------------
454 | Software IEC/IEEE double-precision operations.
455 *----------------------------------------------------------------------------*/
456 float64 float64_round_to_int( float64 STATUS_PARAM );
457 float64 float64_trunc_to_int( float64 STATUS_PARAM );
458 float64 float64_add( float64, float64 STATUS_PARAM );
459 float64 float64_sub( float64, float64 STATUS_PARAM );
460 float64 float64_mul( float64, float64 STATUS_PARAM );
461 float64 float64_div( float64, float64 STATUS_PARAM );
462 float64 float64_rem( float64, float64 STATUS_PARAM );
463 float64 float64_muladd(float64, float64, float64, int STATUS_PARAM);
464 float64 float64_sqrt( float64 STATUS_PARAM );
465 float64 float64_log2( float64 STATUS_PARAM );
466 int float64_eq( float64, float64 STATUS_PARAM );
467 int float64_le( float64, float64 STATUS_PARAM );
468 int float64_lt( float64, float64 STATUS_PARAM );
469 int float64_unordered( float64, float64 STATUS_PARAM );
470 int float64_eq_quiet( float64, float64 STATUS_PARAM );
471 int float64_le_quiet( float64, float64 STATUS_PARAM );
472 int float64_lt_quiet( float64, float64 STATUS_PARAM );
473 int float64_unordered_quiet( float64, float64 STATUS_PARAM );
474 int float64_compare( float64, float64 STATUS_PARAM );
475 int float64_compare_quiet( float64, float64 STATUS_PARAM );
476 float64 float64_min(float64, float64 STATUS_PARAM);
477 float64 float64_max(float64, float64 STATUS_PARAM);
478 float64 float64_minnum(float64, float64 STATUS_PARAM);
479 float64 float64_maxnum(float64, float64 STATUS_PARAM);
480 int float64_is_quiet_nan( float64 a );
481 int float64_is_signaling_nan( float64 );
482 float64 float64_maybe_silence_nan( float64 );
483 float64 float64_scalbn( float64, int STATUS_PARAM );
485 INLINE float64 float64_abs(float64 a)
487 /* Note that abs does *not* handle NaN specially, nor does
488 * it flush denormal inputs to zero.
490 return make_float64(float64_val(a) & 0x7fffffffffffffffLL);
493 INLINE float64 float64_chs(float64 a)
495 /* Note that chs does *not* handle NaN specially, nor does
496 * it flush denormal inputs to zero.
498 return make_float64(float64_val(a) ^ 0x8000000000000000LL);
501 INLINE int float64_is_infinity(float64 a)
503 return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL;
506 INLINE int float64_is_neg(float64 a)
508 return float64_val(a) >> 63;
511 INLINE int float64_is_zero(float64 a)
513 return (float64_val(a) & 0x7fffffffffffffffLL) == 0;
516 INLINE int float64_is_any_nan(float64 a)
518 return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL);
521 INLINE int float64_is_zero_or_denormal(float64 a)
523 return (float64_val(a) & 0x7ff0000000000000LL) == 0;
526 INLINE float64 float64_set_sign(float64 a, int sign)
528 return make_float64((float64_val(a) & 0x7fffffffffffffffULL)
529 | ((int64_t)sign << 63));
532 #define float64_zero make_float64(0)
533 #define float64_one make_float64(0x3ff0000000000000LL)
534 #define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
535 #define float64_pi make_float64(0x400921fb54442d18LL)
536 #define float64_half make_float64(0x3fe0000000000000LL)
537 #define float64_infinity make_float64(0x7ff0000000000000LL)
539 /*----------------------------------------------------------------------------
540 | The pattern for a default generated double-precision NaN.
541 *----------------------------------------------------------------------------*/
542 extern const float64 float64_default_nan;
544 /*----------------------------------------------------------------------------
545 | Software IEC/IEEE extended double-precision conversion routines.
546 *----------------------------------------------------------------------------*/
547 int32 floatx80_to_int32( floatx80 STATUS_PARAM );
548 int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
549 int64 floatx80_to_int64( floatx80 STATUS_PARAM );
550 int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM );
551 float32 floatx80_to_float32( floatx80 STATUS_PARAM );
552 float64 floatx80_to_float64( floatx80 STATUS_PARAM );
553 float128 floatx80_to_float128( floatx80 STATUS_PARAM );
555 /*----------------------------------------------------------------------------
556 | Software IEC/IEEE extended double-precision operations.
557 *----------------------------------------------------------------------------*/
558 floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
559 floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM );
560 floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM );
561 floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM );
562 floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM );
563 floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
564 floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
565 int floatx80_eq( floatx80, floatx80 STATUS_PARAM );
566 int floatx80_le( floatx80, floatx80 STATUS_PARAM );
567 int floatx80_lt( floatx80, floatx80 STATUS_PARAM );
568 int floatx80_unordered( floatx80, floatx80 STATUS_PARAM );
569 int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM );
570 int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM );
571 int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM );
572 int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM );
573 int floatx80_compare( floatx80, floatx80 STATUS_PARAM );
574 int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
575 int floatx80_is_quiet_nan( floatx80 );
576 int floatx80_is_signaling_nan( floatx80 );
577 floatx80 floatx80_maybe_silence_nan( floatx80 );
578 floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM );
580 INLINE floatx80 floatx80_abs(floatx80 a)
586 INLINE floatx80 floatx80_chs(floatx80 a)
592 INLINE int floatx80_is_infinity(floatx80 a)
594 return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL;
597 INLINE int floatx80_is_neg(floatx80 a)
602 INLINE int floatx80_is_zero(floatx80 a)
604 return (a.high & 0x7fff) == 0 && a.low == 0;
607 INLINE int floatx80_is_zero_or_denormal(floatx80 a)
609 return (a.high & 0x7fff) == 0;
612 INLINE int floatx80_is_any_nan(floatx80 a)
614 return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1);
617 #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL)
618 #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL)
619 #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL)
620 #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL)
621 #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL)
622 #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL)
624 /*----------------------------------------------------------------------------
625 | The pattern for a default generated extended double-precision NaN.
626 *----------------------------------------------------------------------------*/
627 extern const floatx80 floatx80_default_nan;
629 /*----------------------------------------------------------------------------
630 | Software IEC/IEEE quadruple-precision conversion routines.
631 *----------------------------------------------------------------------------*/
632 int32 float128_to_int32( float128 STATUS_PARAM );
633 int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM );
634 int64 float128_to_int64( float128 STATUS_PARAM );
635 int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM );
636 float32 float128_to_float32( float128 STATUS_PARAM );
637 float64 float128_to_float64( float128 STATUS_PARAM );
638 floatx80 float128_to_floatx80( float128 STATUS_PARAM );
640 /*----------------------------------------------------------------------------
641 | Software IEC/IEEE quadruple-precision operations.
642 *----------------------------------------------------------------------------*/
643 float128 float128_round_to_int( float128 STATUS_PARAM );
644 float128 float128_add( float128, float128 STATUS_PARAM );
645 float128 float128_sub( float128, float128 STATUS_PARAM );
646 float128 float128_mul( float128, float128 STATUS_PARAM );
647 float128 float128_div( float128, float128 STATUS_PARAM );
648 float128 float128_rem( float128, float128 STATUS_PARAM );
649 float128 float128_sqrt( float128 STATUS_PARAM );
650 int float128_eq( float128, float128 STATUS_PARAM );
651 int float128_le( float128, float128 STATUS_PARAM );
652 int float128_lt( float128, float128 STATUS_PARAM );
653 int float128_unordered( float128, float128 STATUS_PARAM );
654 int float128_eq_quiet( float128, float128 STATUS_PARAM );
655 int float128_le_quiet( float128, float128 STATUS_PARAM );
656 int float128_lt_quiet( float128, float128 STATUS_PARAM );
657 int float128_unordered_quiet( float128, float128 STATUS_PARAM );
658 int float128_compare( float128, float128 STATUS_PARAM );
659 int float128_compare_quiet( float128, float128 STATUS_PARAM );
660 int float128_is_quiet_nan( float128 );
661 int float128_is_signaling_nan( float128 );
662 float128 float128_maybe_silence_nan( float128 );
663 float128 float128_scalbn( float128, int STATUS_PARAM );
665 INLINE float128 float128_abs(float128 a)
667 a.high &= 0x7fffffffffffffffLL;
671 INLINE float128 float128_chs(float128 a)
673 a.high ^= 0x8000000000000000LL;
677 INLINE int float128_is_infinity(float128 a)
679 return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0;
682 INLINE int float128_is_neg(float128 a)
687 INLINE int float128_is_zero(float128 a)
689 return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0;
692 INLINE int float128_is_zero_or_denormal(float128 a)
694 return (a.high & 0x7fff000000000000LL) == 0;
697 INLINE int float128_is_any_nan(float128 a)
699 return ((a.high >> 48) & 0x7fff) == 0x7fff &&
700 ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0));
703 #define float128_zero make_float128(0, 0)
705 /*----------------------------------------------------------------------------
706 | The pattern for a default generated quadruple-precision NaN.
707 *----------------------------------------------------------------------------*/
708 extern const float128 float128_default_nan;
710 #endif /* !SOFTFLOAT_H */