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1.1 root 1: /*============================================================================
2:
3: This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
4: Package, Release 2b.
5:
6: Written by John R. Hauser. This work was made possible in part by the
7: International Computer Science Institute, located at Suite 600, 1947 Center
8: Street, Berkeley, California 94704. Funding was partially provided by the
9: National Science Foundation under grant MIP-9311980. The original version
10: of this code was written as part of a project to build a fixed-point vector
11: processor in collaboration with the University of California at Berkeley,
12: overseen by Profs. Nelson Morgan and John Wawrzynek. More information
13: is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
14: arithmetic/SoftFloat.html'.
15:
16: THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort has
17: been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
18: RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
19: AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
20: COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
21: EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
22: INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
23: OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
24:
25: Derivative works are acceptable, even for commercial purposes, so long as
26: (1) the source code for the derivative work includes prominent notice that
27: the work is derivative, and (2) the source code includes prominent notice with
28: these four paragraphs for those parts of this code that are retained.
29:
30: =============================================================================*/
31:
32: #ifndef SOFTFLOAT_H
33: #define SOFTFLOAT_H
34:
1.1.1.7 root 35: #if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH)
1.1.1.4 root 36: #include <sunmath.h>
37: #endif
38:
1.1 root 39: #include <inttypes.h>
40: #include "config.h"
41:
42: /*----------------------------------------------------------------------------
43: | Each of the following `typedef's defines the most convenient type that holds
44: | integers of at least as many bits as specified. For example, `uint8' should
45: | be the most convenient type that can hold unsigned integers of as many as
46: | 8 bits. The `flag' type must be able to hold either a 0 or 1. For most
47: | implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
48: | to the same as `int'.
49: *----------------------------------------------------------------------------*/
1.1.1.3 root 50: typedef uint8_t flag;
1.1 root 51: typedef uint8_t uint8;
52: typedef int8_t int8;
1.1.1.5 root 53: #ifndef _AIX
1.1 root 54: typedef int uint16;
55: typedef int int16;
1.1.1.5 root 56: #endif
1.1 root 57: typedef unsigned int uint32;
58: typedef signed int int32;
59: typedef uint64_t uint64;
60: typedef int64_t int64;
61:
62: /*----------------------------------------------------------------------------
63: | Each of the following `typedef's defines a type that holds integers
64: | of _exactly_ the number of bits specified. For instance, for most
65: | implementation of C, `bits16' and `sbits16' should be `typedef'ed to
66: | `unsigned short int' and `signed short int' (or `short int'), respectively.
67: *----------------------------------------------------------------------------*/
68: typedef uint8_t bits8;
69: typedef int8_t sbits8;
70: typedef uint16_t bits16;
71: typedef int16_t sbits16;
72: typedef uint32_t bits32;
73: typedef int32_t sbits32;
74: typedef uint64_t bits64;
75: typedef int64_t sbits64;
76:
77: #define LIT64( a ) a##LL
78: #define INLINE static inline
79:
80: /*----------------------------------------------------------------------------
81: | The macro `FLOATX80' must be defined to enable the extended double-precision
82: | floating-point format `floatx80'. If this macro is not defined, the
83: | `floatx80' type will not be defined, and none of the functions that either
84: | input or output the `floatx80' type will be defined. The same applies to
85: | the `FLOAT128' macro and the quadruple-precision format `float128'.
86: *----------------------------------------------------------------------------*/
87: #ifdef CONFIG_SOFTFLOAT
88: /* bit exact soft float support */
89: #define FLOATX80
90: #define FLOAT128
91: #else
92: /* native float support */
1.1.1.7 root 93: #if (defined(__i386__) || defined(__x86_64__)) && !defined(CONFIG_BSD)
1.1 root 94: #define FLOATX80
95: #endif
96: #endif /* !CONFIG_SOFTFLOAT */
97:
98: #define STATUS_PARAM , float_status *status
99: #define STATUS(field) status->field
100: #define STATUS_VAR , status
101:
102: /*----------------------------------------------------------------------------
103: | Software IEC/IEEE floating-point ordering relations
104: *----------------------------------------------------------------------------*/
105: enum {
106: float_relation_less = -1,
107: float_relation_equal = 0,
108: float_relation_greater = 1,
109: float_relation_unordered = 2
110: };
111:
112: #ifdef CONFIG_SOFTFLOAT
113: /*----------------------------------------------------------------------------
114: | Software IEC/IEEE floating-point types.
115: *----------------------------------------------------------------------------*/
1.1.1.4 root 116: /* Use structures for soft-float types. This prevents accidentally mixing
117: them with native int/float types. A sufficiently clever compiler and
118: sane ABI should be able to see though these structs. However
119: x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */
120: //#define USE_SOFTFLOAT_STRUCT_TYPES
121: #ifdef USE_SOFTFLOAT_STRUCT_TYPES
122: typedef struct {
123: uint32_t v;
124: } float32;
125: /* The cast ensures an error if the wrong type is passed. */
126: #define float32_val(x) (((float32)(x)).v)
127: #define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; })
128: typedef struct {
129: uint64_t v;
130: } float64;
131: #define float64_val(x) (((float64)(x)).v)
132: #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; })
133: #else
1.1 root 134: typedef uint32_t float32;
135: typedef uint64_t float64;
1.1.1.4 root 136: #define float32_val(x) (x)
137: #define float64_val(x) (x)
138: #define make_float32(x) (x)
139: #define make_float64(x) (x)
140: #endif
1.1 root 141: #ifdef FLOATX80
142: typedef struct {
143: uint64_t low;
144: uint16_t high;
145: } floatx80;
146: #endif
147: #ifdef FLOAT128
148: typedef struct {
1.1.1.7 root 149: #ifdef HOST_WORDS_BIGENDIAN
1.1 root 150: uint64_t high, low;
151: #else
152: uint64_t low, high;
153: #endif
154: } float128;
155: #endif
156:
157: /*----------------------------------------------------------------------------
158: | Software IEC/IEEE floating-point underflow tininess-detection mode.
159: *----------------------------------------------------------------------------*/
160: enum {
161: float_tininess_after_rounding = 0,
162: float_tininess_before_rounding = 1
163: };
164:
165: /*----------------------------------------------------------------------------
166: | Software IEC/IEEE floating-point rounding mode.
167: *----------------------------------------------------------------------------*/
168: enum {
169: float_round_nearest_even = 0,
170: float_round_down = 1,
171: float_round_up = 2,
172: float_round_to_zero = 3
173: };
174:
175: /*----------------------------------------------------------------------------
176: | Software IEC/IEEE floating-point exception flags.
177: *----------------------------------------------------------------------------*/
178: enum {
179: float_flag_invalid = 1,
180: float_flag_divbyzero = 4,
181: float_flag_overflow = 8,
182: float_flag_underflow = 16,
1.1.1.9 ! root 183: float_flag_inexact = 32,
! 184: float_flag_input_denormal = 64
1.1 root 185: };
186:
187: typedef struct float_status {
188: signed char float_detect_tininess;
189: signed char float_rounding_mode;
190: signed char float_exception_flags;
191: #ifdef FLOATX80
192: signed char floatx80_rounding_precision;
193: #endif
1.1.1.9 ! root 194: /* should denormalised results go to zero and set the inexact flag? */
1.1.1.5 root 195: flag flush_to_zero;
1.1.1.9 ! root 196: /* should denormalised inputs go to zero and set the input_denormal flag? */
! 197: flag flush_inputs_to_zero;
1.1.1.5 root 198: flag default_nan_mode;
1.1 root 199: } float_status;
200:
201: void set_float_rounding_mode(int val STATUS_PARAM);
202: void set_float_exception_flags(int val STATUS_PARAM);
1.1.1.5 root 203: INLINE void set_flush_to_zero(flag val STATUS_PARAM)
204: {
205: STATUS(flush_to_zero) = val;
206: }
1.1.1.9 ! root 207: INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM)
! 208: {
! 209: STATUS(flush_inputs_to_zero) = val;
! 210: }
1.1.1.5 root 211: INLINE void set_default_nan_mode(flag val STATUS_PARAM)
212: {
213: STATUS(default_nan_mode) = val;
214: }
1.1 root 215: INLINE int get_float_exception_flags(float_status *status)
216: {
217: return STATUS(float_exception_flags);
218: }
219: #ifdef FLOATX80
220: void set_floatx80_rounding_precision(int val STATUS_PARAM);
221: #endif
222:
223: /*----------------------------------------------------------------------------
224: | Routine to raise any or all of the software IEC/IEEE floating-point
225: | exception flags.
226: *----------------------------------------------------------------------------*/
1.1.1.2 root 227: void float_raise( int8 flags STATUS_PARAM);
1.1 root 228:
229: /*----------------------------------------------------------------------------
230: | Software IEC/IEEE integer-to-floating-point conversion routines.
231: *----------------------------------------------------------------------------*/
232: float32 int32_to_float32( int STATUS_PARAM );
233: float64 int32_to_float64( int STATUS_PARAM );
234: float32 uint32_to_float32( unsigned int STATUS_PARAM );
235: float64 uint32_to_float64( unsigned int STATUS_PARAM );
236: #ifdef FLOATX80
237: floatx80 int32_to_floatx80( int STATUS_PARAM );
238: #endif
239: #ifdef FLOAT128
240: float128 int32_to_float128( int STATUS_PARAM );
241: #endif
242: float32 int64_to_float32( int64_t STATUS_PARAM );
1.1.1.4 root 243: float32 uint64_to_float32( uint64_t STATUS_PARAM );
1.1 root 244: float64 int64_to_float64( int64_t STATUS_PARAM );
1.1.1.4 root 245: float64 uint64_to_float64( uint64_t STATUS_PARAM );
1.1 root 246: #ifdef FLOATX80
247: floatx80 int64_to_floatx80( int64_t STATUS_PARAM );
248: #endif
249: #ifdef FLOAT128
250: float128 int64_to_float128( int64_t STATUS_PARAM );
251: #endif
252:
253: /*----------------------------------------------------------------------------
1.1.1.7 root 254: | Software half-precision conversion routines.
255: *----------------------------------------------------------------------------*/
256: bits16 float32_to_float16( float32, flag STATUS_PARAM );
257: float32 float16_to_float32( bits16, flag STATUS_PARAM );
258:
259: /*----------------------------------------------------------------------------
1.1 root 260: | Software IEC/IEEE single-precision conversion routines.
261: *----------------------------------------------------------------------------*/
1.1.1.9 ! root 262: int float32_to_int16_round_to_zero( float32 STATUS_PARAM );
! 263: unsigned int float32_to_uint16_round_to_zero( float32 STATUS_PARAM );
1.1 root 264: int float32_to_int32( float32 STATUS_PARAM );
265: int float32_to_int32_round_to_zero( float32 STATUS_PARAM );
266: unsigned int float32_to_uint32( float32 STATUS_PARAM );
267: unsigned int float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
268: int64_t float32_to_int64( float32 STATUS_PARAM );
269: int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM );
270: float64 float32_to_float64( float32 STATUS_PARAM );
271: #ifdef FLOATX80
272: floatx80 float32_to_floatx80( float32 STATUS_PARAM );
273: #endif
274: #ifdef FLOAT128
275: float128 float32_to_float128( float32 STATUS_PARAM );
276: #endif
277:
278: /*----------------------------------------------------------------------------
279: | Software IEC/IEEE single-precision operations.
280: *----------------------------------------------------------------------------*/
281: float32 float32_round_to_int( float32 STATUS_PARAM );
282: float32 float32_add( float32, float32 STATUS_PARAM );
283: float32 float32_sub( float32, float32 STATUS_PARAM );
284: float32 float32_mul( float32, float32 STATUS_PARAM );
285: float32 float32_div( float32, float32 STATUS_PARAM );
286: float32 float32_rem( float32, float32 STATUS_PARAM );
287: float32 float32_sqrt( float32 STATUS_PARAM );
1.1.1.8 root 288: float32 float32_exp2( float32 STATUS_PARAM );
1.1.1.5 root 289: float32 float32_log2( float32 STATUS_PARAM );
1.1.1.3 root 290: int float32_eq( float32, float32 STATUS_PARAM );
291: int float32_le( float32, float32 STATUS_PARAM );
292: int float32_lt( float32, float32 STATUS_PARAM );
293: int float32_eq_signaling( float32, float32 STATUS_PARAM );
294: int float32_le_quiet( float32, float32 STATUS_PARAM );
295: int float32_lt_quiet( float32, float32 STATUS_PARAM );
296: int float32_compare( float32, float32 STATUS_PARAM );
297: int float32_compare_quiet( float32, float32 STATUS_PARAM );
1.1.1.9 ! root 298: int float32_is_quiet_nan( float32 );
1.1.1.3 root 299: int float32_is_signaling_nan( float32 );
1.1.1.9 ! root 300: float32 float32_maybe_silence_nan( float32 );
1.1.1.4 root 301: float32 float32_scalbn( float32, int STATUS_PARAM );
1.1 root 302:
303: INLINE float32 float32_abs(float32 a)
304: {
1.1.1.9 ! root 305: /* Note that abs does *not* handle NaN specially, nor does
! 306: * it flush denormal inputs to zero.
! 307: */
1.1.1.4 root 308: return make_float32(float32_val(a) & 0x7fffffff);
1.1 root 309: }
310:
311: INLINE float32 float32_chs(float32 a)
312: {
1.1.1.9 ! root 313: /* Note that chs does *not* handle NaN specially, nor does
! 314: * it flush denormal inputs to zero.
! 315: */
1.1.1.4 root 316: return make_float32(float32_val(a) ^ 0x80000000);
1.1 root 317: }
318:
1.1.1.5 root 319: INLINE int float32_is_infinity(float32 a)
320: {
321: return (float32_val(a) & 0x7fffffff) == 0x7f800000;
322: }
323:
324: INLINE int float32_is_neg(float32 a)
325: {
326: return float32_val(a) >> 31;
327: }
328:
329: INLINE int float32_is_zero(float32 a)
330: {
331: return (float32_val(a) & 0x7fffffff) == 0;
332: }
333:
1.1.1.9 ! root 334: INLINE int float32_is_any_nan(float32 a)
! 335: {
! 336: return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL);
! 337: }
! 338:
! 339: INLINE int float32_is_zero_or_denormal(float32 a)
! 340: {
! 341: return (float32_val(a) & 0x7f800000) == 0;
! 342: }
! 343:
1.1.1.4 root 344: #define float32_zero make_float32(0)
1.1.1.5 root 345: #define float32_one make_float32(0x3f800000)
1.1.1.8 root 346: #define float32_ln2 make_float32(0x3f317218)
1.1.1.4 root 347:
1.1 root 348: /*----------------------------------------------------------------------------
349: | Software IEC/IEEE double-precision conversion routines.
350: *----------------------------------------------------------------------------*/
1.1.1.9 ! root 351: int float64_to_int16_round_to_zero( float64 STATUS_PARAM );
! 352: unsigned int float64_to_uint16_round_to_zero( float64 STATUS_PARAM );
1.1 root 353: int float64_to_int32( float64 STATUS_PARAM );
354: int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
355: unsigned int float64_to_uint32( float64 STATUS_PARAM );
356: unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
357: int64_t float64_to_int64( float64 STATUS_PARAM );
358: int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
1.1.1.4 root 359: uint64_t float64_to_uint64 (float64 a STATUS_PARAM);
360: uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM);
1.1 root 361: float32 float64_to_float32( float64 STATUS_PARAM );
362: #ifdef FLOATX80
363: floatx80 float64_to_floatx80( float64 STATUS_PARAM );
364: #endif
365: #ifdef FLOAT128
366: float128 float64_to_float128( float64 STATUS_PARAM );
367: #endif
368:
369: /*----------------------------------------------------------------------------
370: | Software IEC/IEEE double-precision operations.
371: *----------------------------------------------------------------------------*/
372: float64 float64_round_to_int( float64 STATUS_PARAM );
1.1.1.3 root 373: float64 float64_trunc_to_int( float64 STATUS_PARAM );
1.1 root 374: float64 float64_add( float64, float64 STATUS_PARAM );
375: float64 float64_sub( float64, float64 STATUS_PARAM );
376: float64 float64_mul( float64, float64 STATUS_PARAM );
377: float64 float64_div( float64, float64 STATUS_PARAM );
378: float64 float64_rem( float64, float64 STATUS_PARAM );
379: float64 float64_sqrt( float64 STATUS_PARAM );
1.1.1.5 root 380: float64 float64_log2( float64 STATUS_PARAM );
1.1.1.3 root 381: int float64_eq( float64, float64 STATUS_PARAM );
382: int float64_le( float64, float64 STATUS_PARAM );
383: int float64_lt( float64, float64 STATUS_PARAM );
384: int float64_eq_signaling( float64, float64 STATUS_PARAM );
385: int float64_le_quiet( float64, float64 STATUS_PARAM );
386: int float64_lt_quiet( float64, float64 STATUS_PARAM );
387: int float64_compare( float64, float64 STATUS_PARAM );
388: int float64_compare_quiet( float64, float64 STATUS_PARAM );
1.1.1.9 ! root 389: int float64_is_quiet_nan( float64 a );
1.1.1.3 root 390: int float64_is_signaling_nan( float64 );
1.1.1.9 ! root 391: float64 float64_maybe_silence_nan( float64 );
1.1.1.4 root 392: float64 float64_scalbn( float64, int STATUS_PARAM );
1.1 root 393:
394: INLINE float64 float64_abs(float64 a)
395: {
1.1.1.9 ! root 396: /* Note that abs does *not* handle NaN specially, nor does
! 397: * it flush denormal inputs to zero.
! 398: */
1.1.1.4 root 399: return make_float64(float64_val(a) & 0x7fffffffffffffffLL);
1.1 root 400: }
401:
402: INLINE float64 float64_chs(float64 a)
403: {
1.1.1.9 ! root 404: /* Note that chs does *not* handle NaN specially, nor does
! 405: * it flush denormal inputs to zero.
! 406: */
1.1.1.4 root 407: return make_float64(float64_val(a) ^ 0x8000000000000000LL);
1.1 root 408: }
409:
1.1.1.5 root 410: INLINE int float64_is_infinity(float64 a)
411: {
412: return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL;
413: }
414:
415: INLINE int float64_is_neg(float64 a)
416: {
417: return float64_val(a) >> 63;
418: }
419:
420: INLINE int float64_is_zero(float64 a)
421: {
422: return (float64_val(a) & 0x7fffffffffffffffLL) == 0;
423: }
424:
1.1.1.9 ! root 425: INLINE int float64_is_any_nan(float64 a)
! 426: {
! 427: return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL);
! 428: }
! 429:
1.1.1.4 root 430: #define float64_zero make_float64(0)
1.1.1.5 root 431: #define float64_one make_float64(0x3ff0000000000000LL)
1.1.1.8 root 432: #define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
1.1.1.4 root 433:
1.1 root 434: #ifdef FLOATX80
435:
436: /*----------------------------------------------------------------------------
437: | Software IEC/IEEE extended double-precision conversion routines.
438: *----------------------------------------------------------------------------*/
439: int floatx80_to_int32( floatx80 STATUS_PARAM );
440: int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
441: int64_t floatx80_to_int64( floatx80 STATUS_PARAM );
442: int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM );
443: float32 floatx80_to_float32( floatx80 STATUS_PARAM );
444: float64 floatx80_to_float64( floatx80 STATUS_PARAM );
445: #ifdef FLOAT128
446: float128 floatx80_to_float128( floatx80 STATUS_PARAM );
447: #endif
448:
449: /*----------------------------------------------------------------------------
450: | Software IEC/IEEE extended double-precision operations.
451: *----------------------------------------------------------------------------*/
452: floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
453: floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM );
454: floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM );
455: floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM );
456: floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM );
457: floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
458: floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
1.1.1.3 root 459: int floatx80_eq( floatx80, floatx80 STATUS_PARAM );
460: int floatx80_le( floatx80, floatx80 STATUS_PARAM );
461: int floatx80_lt( floatx80, floatx80 STATUS_PARAM );
462: int floatx80_eq_signaling( floatx80, floatx80 STATUS_PARAM );
463: int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM );
464: int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM );
1.1.1.9 ! root 465: int floatx80_is_quiet_nan( floatx80 );
1.1.1.3 root 466: int floatx80_is_signaling_nan( floatx80 );
1.1.1.9 ! root 467: floatx80 floatx80_maybe_silence_nan( floatx80 );
1.1.1.4 root 468: floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM );
1.1 root 469:
470: INLINE floatx80 floatx80_abs(floatx80 a)
471: {
472: a.high &= 0x7fff;
473: return a;
474: }
475:
476: INLINE floatx80 floatx80_chs(floatx80 a)
477: {
478: a.high ^= 0x8000;
479: return a;
480: }
481:
1.1.1.5 root 482: INLINE int floatx80_is_infinity(floatx80 a)
483: {
484: return (a.high & 0x7fff) == 0x7fff && a.low == 0;
485: }
486:
487: INLINE int floatx80_is_neg(floatx80 a)
488: {
489: return a.high >> 15;
490: }
491:
492: INLINE int floatx80_is_zero(floatx80 a)
493: {
494: return (a.high & 0x7fff) == 0 && a.low == 0;
495: }
496:
1.1.1.9 ! root 497: INLINE int floatx80_is_any_nan(floatx80 a)
! 498: {
! 499: return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1);
! 500: }
! 501:
1.1 root 502: #endif
503:
504: #ifdef FLOAT128
505:
506: /*----------------------------------------------------------------------------
507: | Software IEC/IEEE quadruple-precision conversion routines.
508: *----------------------------------------------------------------------------*/
509: int float128_to_int32( float128 STATUS_PARAM );
510: int float128_to_int32_round_to_zero( float128 STATUS_PARAM );
511: int64_t float128_to_int64( float128 STATUS_PARAM );
512: int64_t float128_to_int64_round_to_zero( float128 STATUS_PARAM );
513: float32 float128_to_float32( float128 STATUS_PARAM );
514: float64 float128_to_float64( float128 STATUS_PARAM );
515: #ifdef FLOATX80
516: floatx80 float128_to_floatx80( float128 STATUS_PARAM );
517: #endif
518:
519: /*----------------------------------------------------------------------------
520: | Software IEC/IEEE quadruple-precision operations.
521: *----------------------------------------------------------------------------*/
522: float128 float128_round_to_int( float128 STATUS_PARAM );
523: float128 float128_add( float128, float128 STATUS_PARAM );
524: float128 float128_sub( float128, float128 STATUS_PARAM );
525: float128 float128_mul( float128, float128 STATUS_PARAM );
526: float128 float128_div( float128, float128 STATUS_PARAM );
527: float128 float128_rem( float128, float128 STATUS_PARAM );
528: float128 float128_sqrt( float128 STATUS_PARAM );
1.1.1.3 root 529: int float128_eq( float128, float128 STATUS_PARAM );
530: int float128_le( float128, float128 STATUS_PARAM );
531: int float128_lt( float128, float128 STATUS_PARAM );
532: int float128_eq_signaling( float128, float128 STATUS_PARAM );
533: int float128_le_quiet( float128, float128 STATUS_PARAM );
534: int float128_lt_quiet( float128, float128 STATUS_PARAM );
1.1.1.4 root 535: int float128_compare( float128, float128 STATUS_PARAM );
536: int float128_compare_quiet( float128, float128 STATUS_PARAM );
1.1.1.9 ! root 537: int float128_is_quiet_nan( float128 );
1.1.1.3 root 538: int float128_is_signaling_nan( float128 );
1.1.1.9 ! root 539: float128 float128_maybe_silence_nan( float128 );
1.1.1.4 root 540: float128 float128_scalbn( float128, int STATUS_PARAM );
1.1 root 541:
542: INLINE float128 float128_abs(float128 a)
543: {
544: a.high &= 0x7fffffffffffffffLL;
545: return a;
546: }
547:
548: INLINE float128 float128_chs(float128 a)
549: {
550: a.high ^= 0x8000000000000000LL;
551: return a;
552: }
553:
1.1.1.5 root 554: INLINE int float128_is_infinity(float128 a)
555: {
556: return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0;
557: }
558:
559: INLINE int float128_is_neg(float128 a)
560: {
561: return a.high >> 63;
562: }
563:
564: INLINE int float128_is_zero(float128 a)
565: {
566: return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0;
567: }
568:
1.1.1.9 ! root 569: INLINE int float128_is_any_nan(float128 a)
! 570: {
! 571: return ((a.high >> 48) & 0x7fff) == 0x7fff &&
! 572: ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0));
! 573: }
! 574:
1.1 root 575: #endif
576:
577: #else /* CONFIG_SOFTFLOAT */
578:
579: #include "softfloat-native.h"
580:
581: #endif /* !CONFIG_SOFTFLOAT */
582:
583: #endif /* !SOFTFLOAT_H */
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