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 *----------------------------------------------------------------------------*/
254 float_muladd_negate_c
= 1,
255 float_muladd_negate_product
= 2,
256 float_muladd_negate_result
= 4,
259 /*----------------------------------------------------------------------------
260 | Software IEC/IEEE integer-to-floating-point conversion routines.
261 *----------------------------------------------------------------------------*/
262 float32
int32_to_float32(int32_t STATUS_PARAM
);
263 float64
int32_to_float64(int32_t STATUS_PARAM
);
264 float32
uint32_to_float32(uint32_t STATUS_PARAM
);
265 float64
uint32_to_float64(uint32_t STATUS_PARAM
);
266 floatx80
int32_to_floatx80(int32_t STATUS_PARAM
);
267 float128
int32_to_float128(int32_t STATUS_PARAM
);
268 float32
int64_to_float32(int64_t STATUS_PARAM
);
269 float32
uint64_to_float32(uint64_t STATUS_PARAM
);
270 float64
int64_to_float64(int64_t STATUS_PARAM
);
271 float64
uint64_to_float64(uint64_t STATUS_PARAM
);
272 floatx80
int64_to_floatx80(int64_t STATUS_PARAM
);
273 float128
int64_to_float128(int64_t STATUS_PARAM
);
274 float128
uint64_to_float128(uint64_t STATUS_PARAM
);
276 /* We provide the int16 versions for symmetry of API with float-to-int */
277 INLINE float32
int16_to_float32(int16_t v STATUS_PARAM
)
279 return int32_to_float32(v STATUS_VAR
);
282 INLINE float32
uint16_to_float32(uint16_t v STATUS_PARAM
)
284 return uint32_to_float32(v STATUS_VAR
);
287 INLINE float64
int16_to_float64(int16_t v STATUS_PARAM
)
289 return int32_to_float64(v STATUS_VAR
);
292 INLINE float64
uint16_to_float64(uint16_t v STATUS_PARAM
)
294 return uint32_to_float64(v STATUS_VAR
);
297 /*----------------------------------------------------------------------------
298 | Software half-precision conversion routines.
299 *----------------------------------------------------------------------------*/
300 float16
float32_to_float16( float32
, flag STATUS_PARAM
);
301 float32
float16_to_float32( float16
, flag STATUS_PARAM
);
302 float16
float64_to_float16(float64 a
, flag ieee STATUS_PARAM
);
303 float64
float16_to_float64(float16 a
, flag ieee STATUS_PARAM
);
305 /*----------------------------------------------------------------------------
306 | Software half-precision operations.
307 *----------------------------------------------------------------------------*/
308 int float16_is_quiet_nan( float16
);
309 int float16_is_signaling_nan( float16
);
310 float16
float16_maybe_silence_nan( float16
);
312 INLINE
int float16_is_any_nan(float16 a
)
314 return ((float16_val(a
) & ~0x8000) > 0x7c00);
317 /*----------------------------------------------------------------------------
318 | The pattern for a default generated half-precision NaN.
319 *----------------------------------------------------------------------------*/
320 extern const float16 float16_default_nan
;
322 /*----------------------------------------------------------------------------
323 | Software IEC/IEEE single-precision conversion routines.
324 *----------------------------------------------------------------------------*/
325 int_fast16_t float32_to_int16(float32 STATUS_PARAM
);
326 uint_fast16_t float32_to_uint16(float32 STATUS_PARAM
);
327 int_fast16_t float32_to_int16_round_to_zero(float32 STATUS_PARAM
);
328 uint_fast16_t float32_to_uint16_round_to_zero(float32 STATUS_PARAM
);
329 int32
float32_to_int32( float32 STATUS_PARAM
);
330 int32
float32_to_int32_round_to_zero( float32 STATUS_PARAM
);
331 uint32
float32_to_uint32( float32 STATUS_PARAM
);
332 uint32
float32_to_uint32_round_to_zero( float32 STATUS_PARAM
);
333 int64
float32_to_int64( float32 STATUS_PARAM
);
334 uint64
float32_to_uint64(float32 STATUS_PARAM
);
335 int64
float32_to_int64_round_to_zero( float32 STATUS_PARAM
);
336 float64
float32_to_float64( float32 STATUS_PARAM
);
337 floatx80
float32_to_floatx80( float32 STATUS_PARAM
);
338 float128
float32_to_float128( float32 STATUS_PARAM
);
340 /*----------------------------------------------------------------------------
341 | Software IEC/IEEE single-precision operations.
342 *----------------------------------------------------------------------------*/
343 float32
float32_round_to_int( float32 STATUS_PARAM
);
344 float32
float32_add( float32
, float32 STATUS_PARAM
);
345 float32
float32_sub( float32
, float32 STATUS_PARAM
);
346 float32
float32_mul( float32
, float32 STATUS_PARAM
);
347 float32
float32_div( float32
, float32 STATUS_PARAM
);
348 float32
float32_rem( float32
, float32 STATUS_PARAM
);
349 float32
float32_muladd(float32
, float32
, float32
, int STATUS_PARAM
);
350 float32
float32_sqrt( float32 STATUS_PARAM
);
351 float32
float32_exp2( float32 STATUS_PARAM
);
352 float32
float32_log2( float32 STATUS_PARAM
);
353 int float32_eq( float32
, float32 STATUS_PARAM
);
354 int float32_le( float32
, float32 STATUS_PARAM
);
355 int float32_lt( float32
, float32 STATUS_PARAM
);
356 int float32_unordered( float32
, float32 STATUS_PARAM
);
357 int float32_eq_quiet( float32
, float32 STATUS_PARAM
);
358 int float32_le_quiet( float32
, float32 STATUS_PARAM
);
359 int float32_lt_quiet( float32
, float32 STATUS_PARAM
);
360 int float32_unordered_quiet( float32
, float32 STATUS_PARAM
);
361 int float32_compare( float32
, float32 STATUS_PARAM
);
362 int float32_compare_quiet( float32
, float32 STATUS_PARAM
);
363 float32
float32_min(float32
, float32 STATUS_PARAM
);
364 float32
float32_max(float32
, float32 STATUS_PARAM
);
365 float32
float32_minnum(float32
, float32 STATUS_PARAM
);
366 float32
float32_maxnum(float32
, float32 STATUS_PARAM
);
367 int float32_is_quiet_nan( float32
);
368 int float32_is_signaling_nan( float32
);
369 float32
float32_maybe_silence_nan( float32
);
370 float32
float32_scalbn( float32
, int STATUS_PARAM
);
372 INLINE float32
float32_abs(float32 a
)
374 /* Note that abs does *not* handle NaN specially, nor does
375 * it flush denormal inputs to zero.
377 return make_float32(float32_val(a
) & 0x7fffffff);
380 INLINE float32
float32_chs(float32 a
)
382 /* Note that chs does *not* handle NaN specially, nor does
383 * it flush denormal inputs to zero.
385 return make_float32(float32_val(a
) ^ 0x80000000);
388 INLINE
int float32_is_infinity(float32 a
)
390 return (float32_val(a
) & 0x7fffffff) == 0x7f800000;
393 INLINE
int float32_is_neg(float32 a
)
395 return float32_val(a
) >> 31;
398 INLINE
int float32_is_zero(float32 a
)
400 return (float32_val(a
) & 0x7fffffff) == 0;
403 INLINE
int float32_is_any_nan(float32 a
)
405 return ((float32_val(a
) & ~(1 << 31)) > 0x7f800000UL
);
408 INLINE
int float32_is_zero_or_denormal(float32 a
)
410 return (float32_val(a
) & 0x7f800000) == 0;
413 INLINE float32
float32_set_sign(float32 a
, int sign
)
415 return make_float32((float32_val(a
) & 0x7fffffff) | (sign
<< 31));
418 #define float32_zero make_float32(0)
419 #define float32_one make_float32(0x3f800000)
420 #define float32_ln2 make_float32(0x3f317218)
421 #define float32_pi make_float32(0x40490fdb)
422 #define float32_half make_float32(0x3f000000)
423 #define float32_infinity make_float32(0x7f800000)
426 /*----------------------------------------------------------------------------
427 | The pattern for a default generated single-precision NaN.
428 *----------------------------------------------------------------------------*/
429 extern const float32 float32_default_nan
;
431 /*----------------------------------------------------------------------------
432 | Software IEC/IEEE double-precision conversion routines.
433 *----------------------------------------------------------------------------*/
434 int_fast16_t float64_to_int16(float64 STATUS_PARAM
);
435 uint_fast16_t float64_to_uint16(float64 STATUS_PARAM
);
436 int_fast16_t float64_to_int16_round_to_zero(float64 STATUS_PARAM
);
437 uint_fast16_t float64_to_uint16_round_to_zero(float64 STATUS_PARAM
);
438 int32
float64_to_int32( float64 STATUS_PARAM
);
439 int32
float64_to_int32_round_to_zero( float64 STATUS_PARAM
);
440 uint32
float64_to_uint32( float64 STATUS_PARAM
);
441 uint32
float64_to_uint32_round_to_zero( float64 STATUS_PARAM
);
442 int64
float64_to_int64( float64 STATUS_PARAM
);
443 int64
float64_to_int64_round_to_zero( float64 STATUS_PARAM
);
444 uint64
float64_to_uint64 (float64 a STATUS_PARAM
);
445 uint64
float64_to_uint64_round_to_zero (float64 a STATUS_PARAM
);
446 float32
float64_to_float32( float64 STATUS_PARAM
);
447 floatx80
float64_to_floatx80( float64 STATUS_PARAM
);
448 float128
float64_to_float128( float64 STATUS_PARAM
);
450 /*----------------------------------------------------------------------------
451 | Software IEC/IEEE double-precision operations.
452 *----------------------------------------------------------------------------*/
453 float64
float64_round_to_int( float64 STATUS_PARAM
);
454 float64
float64_trunc_to_int( float64 STATUS_PARAM
);
455 float64
float64_add( float64
, float64 STATUS_PARAM
);
456 float64
float64_sub( float64
, float64 STATUS_PARAM
);
457 float64
float64_mul( float64
, float64 STATUS_PARAM
);
458 float64
float64_div( float64
, float64 STATUS_PARAM
);
459 float64
float64_rem( float64
, float64 STATUS_PARAM
);
460 float64
float64_muladd(float64
, float64
, float64
, int STATUS_PARAM
);
461 float64
float64_sqrt( float64 STATUS_PARAM
);
462 float64
float64_log2( float64 STATUS_PARAM
);
463 int float64_eq( float64
, float64 STATUS_PARAM
);
464 int float64_le( float64
, float64 STATUS_PARAM
);
465 int float64_lt( float64
, float64 STATUS_PARAM
);
466 int float64_unordered( float64
, float64 STATUS_PARAM
);
467 int float64_eq_quiet( float64
, float64 STATUS_PARAM
);
468 int float64_le_quiet( float64
, float64 STATUS_PARAM
);
469 int float64_lt_quiet( float64
, float64 STATUS_PARAM
);
470 int float64_unordered_quiet( float64
, float64 STATUS_PARAM
);
471 int float64_compare( float64
, float64 STATUS_PARAM
);
472 int float64_compare_quiet( float64
, float64 STATUS_PARAM
);
473 float64
float64_min(float64
, float64 STATUS_PARAM
);
474 float64
float64_max(float64
, float64 STATUS_PARAM
);
475 float64
float64_minnum(float64
, float64 STATUS_PARAM
);
476 float64
float64_maxnum(float64
, float64 STATUS_PARAM
);
477 int float64_is_quiet_nan( float64 a
);
478 int float64_is_signaling_nan( float64
);
479 float64
float64_maybe_silence_nan( float64
);
480 float64
float64_scalbn( float64
, int STATUS_PARAM
);
482 INLINE float64
float64_abs(float64 a
)
484 /* Note that abs does *not* handle NaN specially, nor does
485 * it flush denormal inputs to zero.
487 return make_float64(float64_val(a
) & 0x7fffffffffffffffLL
);
490 INLINE float64
float64_chs(float64 a
)
492 /* Note that chs does *not* handle NaN specially, nor does
493 * it flush denormal inputs to zero.
495 return make_float64(float64_val(a
) ^ 0x8000000000000000LL
);
498 INLINE
int float64_is_infinity(float64 a
)
500 return (float64_val(a
) & 0x7fffffffffffffffLL
) == 0x7ff0000000000000LL
;
503 INLINE
int float64_is_neg(float64 a
)
505 return float64_val(a
) >> 63;
508 INLINE
int float64_is_zero(float64 a
)
510 return (float64_val(a
) & 0x7fffffffffffffffLL
) == 0;
513 INLINE
int float64_is_any_nan(float64 a
)
515 return ((float64_val(a
) & ~(1ULL << 63)) > 0x7ff0000000000000ULL
);
518 INLINE
int float64_is_zero_or_denormal(float64 a
)
520 return (float64_val(a
) & 0x7ff0000000000000LL
) == 0;
523 INLINE float64
float64_set_sign(float64 a
, int sign
)
525 return make_float64((float64_val(a
) & 0x7fffffffffffffffULL
)
526 | ((int64_t)sign
<< 63));
529 #define float64_zero make_float64(0)
530 #define float64_one make_float64(0x3ff0000000000000LL)
531 #define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
532 #define float64_pi make_float64(0x400921fb54442d18LL)
533 #define float64_half make_float64(0x3fe0000000000000LL)
534 #define float64_infinity make_float64(0x7ff0000000000000LL)
536 /*----------------------------------------------------------------------------
537 | The pattern for a default generated double-precision NaN.
538 *----------------------------------------------------------------------------*/
539 extern const float64 float64_default_nan
;
541 /*----------------------------------------------------------------------------
542 | Software IEC/IEEE extended double-precision conversion routines.
543 *----------------------------------------------------------------------------*/
544 int32
floatx80_to_int32( floatx80 STATUS_PARAM
);
545 int32
floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM
);
546 int64
floatx80_to_int64( floatx80 STATUS_PARAM
);
547 int64
floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM
);
548 float32
floatx80_to_float32( floatx80 STATUS_PARAM
);
549 float64
floatx80_to_float64( floatx80 STATUS_PARAM
);
550 float128
floatx80_to_float128( floatx80 STATUS_PARAM
);
552 /*----------------------------------------------------------------------------
553 | Software IEC/IEEE extended double-precision operations.
554 *----------------------------------------------------------------------------*/
555 floatx80
floatx80_round_to_int( floatx80 STATUS_PARAM
);
556 floatx80
floatx80_add( floatx80
, floatx80 STATUS_PARAM
);
557 floatx80
floatx80_sub( floatx80
, floatx80 STATUS_PARAM
);
558 floatx80
floatx80_mul( floatx80
, floatx80 STATUS_PARAM
);
559 floatx80
floatx80_div( floatx80
, floatx80 STATUS_PARAM
);
560 floatx80
floatx80_rem( floatx80
, floatx80 STATUS_PARAM
);
561 floatx80
floatx80_sqrt( floatx80 STATUS_PARAM
);
562 int floatx80_eq( floatx80
, floatx80 STATUS_PARAM
);
563 int floatx80_le( floatx80
, floatx80 STATUS_PARAM
);
564 int floatx80_lt( floatx80
, floatx80 STATUS_PARAM
);
565 int floatx80_unordered( floatx80
, floatx80 STATUS_PARAM
);
566 int floatx80_eq_quiet( floatx80
, floatx80 STATUS_PARAM
);
567 int floatx80_le_quiet( floatx80
, floatx80 STATUS_PARAM
);
568 int floatx80_lt_quiet( floatx80
, floatx80 STATUS_PARAM
);
569 int floatx80_unordered_quiet( floatx80
, floatx80 STATUS_PARAM
);
570 int floatx80_compare( floatx80
, floatx80 STATUS_PARAM
);
571 int floatx80_compare_quiet( floatx80
, floatx80 STATUS_PARAM
);
572 int floatx80_is_quiet_nan( floatx80
);
573 int floatx80_is_signaling_nan( floatx80
);
574 floatx80
floatx80_maybe_silence_nan( floatx80
);
575 floatx80
floatx80_scalbn( floatx80
, int STATUS_PARAM
);
577 INLINE floatx80
floatx80_abs(floatx80 a
)
583 INLINE floatx80
floatx80_chs(floatx80 a
)
589 INLINE
int floatx80_is_infinity(floatx80 a
)
591 return (a
.high
& 0x7fff) == 0x7fff && a
.low
== 0x8000000000000000LL
;
594 INLINE
int floatx80_is_neg(floatx80 a
)
599 INLINE
int floatx80_is_zero(floatx80 a
)
601 return (a
.high
& 0x7fff) == 0 && a
.low
== 0;
604 INLINE
int floatx80_is_zero_or_denormal(floatx80 a
)
606 return (a
.high
& 0x7fff) == 0;
609 INLINE
int floatx80_is_any_nan(floatx80 a
)
611 return ((a
.high
& 0x7fff) == 0x7fff) && (a
.low
<<1);
614 #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL)
615 #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL)
616 #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL)
617 #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL)
618 #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL)
619 #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL)
621 /*----------------------------------------------------------------------------
622 | The pattern for a default generated extended double-precision NaN.
623 *----------------------------------------------------------------------------*/
624 extern const floatx80 floatx80_default_nan
;
626 /*----------------------------------------------------------------------------
627 | Software IEC/IEEE quadruple-precision conversion routines.
628 *----------------------------------------------------------------------------*/
629 int32
float128_to_int32( float128 STATUS_PARAM
);
630 int32
float128_to_int32_round_to_zero( float128 STATUS_PARAM
);
631 int64
float128_to_int64( float128 STATUS_PARAM
);
632 int64
float128_to_int64_round_to_zero( float128 STATUS_PARAM
);
633 float32
float128_to_float32( float128 STATUS_PARAM
);
634 float64
float128_to_float64( float128 STATUS_PARAM
);
635 floatx80
float128_to_floatx80( float128 STATUS_PARAM
);
637 /*----------------------------------------------------------------------------
638 | Software IEC/IEEE quadruple-precision operations.
639 *----------------------------------------------------------------------------*/
640 float128
float128_round_to_int( float128 STATUS_PARAM
);
641 float128
float128_add( float128
, float128 STATUS_PARAM
);
642 float128
float128_sub( float128
, float128 STATUS_PARAM
);
643 float128
float128_mul( float128
, float128 STATUS_PARAM
);
644 float128
float128_div( float128
, float128 STATUS_PARAM
);
645 float128
float128_rem( float128
, float128 STATUS_PARAM
);
646 float128
float128_sqrt( float128 STATUS_PARAM
);
647 int float128_eq( float128
, float128 STATUS_PARAM
);
648 int float128_le( float128
, float128 STATUS_PARAM
);
649 int float128_lt( float128
, float128 STATUS_PARAM
);
650 int float128_unordered( float128
, float128 STATUS_PARAM
);
651 int float128_eq_quiet( float128
, float128 STATUS_PARAM
);
652 int float128_le_quiet( float128
, float128 STATUS_PARAM
);
653 int float128_lt_quiet( float128
, float128 STATUS_PARAM
);
654 int float128_unordered_quiet( float128
, float128 STATUS_PARAM
);
655 int float128_compare( float128
, float128 STATUS_PARAM
);
656 int float128_compare_quiet( float128
, float128 STATUS_PARAM
);
657 int float128_is_quiet_nan( float128
);
658 int float128_is_signaling_nan( float128
);
659 float128
float128_maybe_silence_nan( float128
);
660 float128
float128_scalbn( float128
, int STATUS_PARAM
);
662 INLINE float128
float128_abs(float128 a
)
664 a
.high
&= 0x7fffffffffffffffLL
;
668 INLINE float128
float128_chs(float128 a
)
670 a
.high
^= 0x8000000000000000LL
;
674 INLINE
int float128_is_infinity(float128 a
)
676 return (a
.high
& 0x7fffffffffffffffLL
) == 0x7fff000000000000LL
&& a
.low
== 0;
679 INLINE
int float128_is_neg(float128 a
)
684 INLINE
int float128_is_zero(float128 a
)
686 return (a
.high
& 0x7fffffffffffffffLL
) == 0 && a
.low
== 0;
689 INLINE
int float128_is_zero_or_denormal(float128 a
)
691 return (a
.high
& 0x7fff000000000000LL
) == 0;
694 INLINE
int float128_is_any_nan(float128 a
)
696 return ((a
.high
>> 48) & 0x7fff) == 0x7fff &&
697 ((a
.low
!= 0) || ((a
.high
& 0xffffffffffffLL
) != 0));
700 #define float128_zero make_float128(0, 0)
702 /*----------------------------------------------------------------------------
703 | The pattern for a default generated quadruple-precision NaN.
704 *----------------------------------------------------------------------------*/
705 extern const float128 float128_default_nan
;
707 #endif /* !SOFTFLOAT_H */