![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to softfloat.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / fpu|
Return to softfloat.h CVS log | Up to [Qemu by Fabrice Bellard] / qemu / fpu |
1.1.1.10 root 1: /*
2: * QEMU float support
3: *
4: * Derived from SoftFloat.
5: */
6:
1.1 root 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:
1.1.1.7 root 41: #if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH)
1.1.1.4 root 42: #include <sunmath.h>
43: #endif
44:
1.1 root 45: #include <inttypes.h>
1.1.1.11 root 46: #include "config-host.h"
1.1.1.12! root 47: #include "osdep.h"
1.1 root 48:
49: /*----------------------------------------------------------------------------
50: | Each of the following `typedef's defines the most convenient type that holds
51: | integers of at least as many bits as specified. For example, `uint8' should
52: | be the most convenient type that can hold unsigned integers of as many as
53: | 8 bits. The `flag' type must be able to hold either a 0 or 1. For most
54: | implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
55: | to the same as `int'.
56: *----------------------------------------------------------------------------*/
1.1.1.3 root 57: typedef uint8_t flag;
1.1 root 58: typedef uint8_t uint8;
59: typedef int8_t int8;
60: typedef unsigned int uint32;
61: typedef signed int int32;
62: typedef uint64_t uint64;
63: typedef int64_t int64;
64:
65: #define LIT64( a ) a##LL
66: #define INLINE static inline
67:
68: #define STATUS_PARAM , float_status *status
69: #define STATUS(field) status->field
70: #define STATUS_VAR , status
71:
72: /*----------------------------------------------------------------------------
73: | Software IEC/IEEE floating-point ordering relations
74: *----------------------------------------------------------------------------*/
75: enum {
76: float_relation_less = -1,
77: float_relation_equal = 0,
78: float_relation_greater = 1,
79: float_relation_unordered = 2
80: };
81:
82: /*----------------------------------------------------------------------------
83: | Software IEC/IEEE floating-point types.
84: *----------------------------------------------------------------------------*/
1.1.1.4 root 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
91: typedef struct {
1.1.1.10 root 92: uint16_t v;
93: } float16;
94: #define float16_val(x) (((float16)(x)).v)
95: #define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; })
96: #define const_float16(x) { x }
97: typedef struct {
1.1.1.4 root 98: uint32_t v;
99: } float32;
100: /* The cast ensures an error if the wrong type is passed. */
101: #define float32_val(x) (((float32)(x)).v)
102: #define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; })
1.1.1.10 root 103: #define const_float32(x) { x }
1.1.1.4 root 104: typedef struct {
105: uint64_t v;
106: } float64;
107: #define float64_val(x) (((float64)(x)).v)
108: #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; })
1.1.1.10 root 109: #define const_float64(x) { x }
1.1.1.4 root 110: #else
1.1.1.10 root 111: typedef uint16_t float16;
1.1 root 112: typedef uint32_t float32;
113: typedef uint64_t float64;
1.1.1.10 root 114: #define float16_val(x) (x)
1.1.1.4 root 115: #define float32_val(x) (x)
116: #define float64_val(x) (x)
1.1.1.10 root 117: #define make_float16(x) (x)
1.1.1.4 root 118: #define make_float32(x) (x)
119: #define make_float64(x) (x)
1.1.1.10 root 120: #define const_float16(x) (x)
121: #define const_float32(x) (x)
122: #define const_float64(x) (x)
1.1.1.4 root 123: #endif
1.1 root 124: typedef struct {
125: uint64_t low;
126: uint16_t high;
127: } floatx80;
1.1.1.10 root 128: #define make_floatx80(exp, mant) ((floatx80) { mant, exp })
1.1.1.12! root 129: #define make_floatx80_init(exp, mant) { .low = mant, .high = exp }
1.1 root 130: typedef struct {
1.1.1.7 root 131: #ifdef HOST_WORDS_BIGENDIAN
1.1 root 132: uint64_t high, low;
133: #else
134: uint64_t low, high;
135: #endif
136: } float128;
1.1.1.11 root 137: #define make_float128(high_, low_) ((float128) { .high = high_, .low = low_ })
1.1.1.12! root 138: #define make_float128_init(high_, low_) { .high = high_, .low = low_ }
1.1 root 139:
140: /*----------------------------------------------------------------------------
141: | Software IEC/IEEE floating-point underflow tininess-detection mode.
142: *----------------------------------------------------------------------------*/
143: enum {
144: float_tininess_after_rounding = 0,
145: float_tininess_before_rounding = 1
146: };
147:
148: /*----------------------------------------------------------------------------
149: | Software IEC/IEEE floating-point rounding mode.
150: *----------------------------------------------------------------------------*/
151: enum {
152: float_round_nearest_even = 0,
153: float_round_down = 1,
154: float_round_up = 2,
155: float_round_to_zero = 3
156: };
157:
158: /*----------------------------------------------------------------------------
159: | Software IEC/IEEE floating-point exception flags.
160: *----------------------------------------------------------------------------*/
161: enum {
162: float_flag_invalid = 1,
163: float_flag_divbyzero = 4,
164: float_flag_overflow = 8,
165: float_flag_underflow = 16,
1.1.1.9 root 166: float_flag_inexact = 32,
1.1.1.10 root 167: float_flag_input_denormal = 64,
168: float_flag_output_denormal = 128
1.1 root 169: };
170:
171: typedef struct float_status {
172: signed char float_detect_tininess;
173: signed char float_rounding_mode;
174: signed char float_exception_flags;
175: signed char floatx80_rounding_precision;
1.1.1.9 root 176: /* should denormalised results go to zero and set the inexact flag? */
1.1.1.5 root 177: flag flush_to_zero;
1.1.1.9 root 178: /* should denormalised inputs go to zero and set the input_denormal flag? */
179: flag flush_inputs_to_zero;
1.1.1.5 root 180: flag default_nan_mode;
1.1 root 181: } float_status;
182:
183: void set_float_rounding_mode(int val STATUS_PARAM);
184: void set_float_exception_flags(int val STATUS_PARAM);
1.1.1.10 root 185: INLINE void set_float_detect_tininess(int val STATUS_PARAM)
186: {
187: STATUS(float_detect_tininess) = val;
188: }
1.1.1.5 root 189: INLINE void set_flush_to_zero(flag val STATUS_PARAM)
190: {
191: STATUS(flush_to_zero) = val;
192: }
1.1.1.9 root 193: INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM)
194: {
195: STATUS(flush_inputs_to_zero) = val;
196: }
1.1.1.5 root 197: INLINE void set_default_nan_mode(flag val STATUS_PARAM)
198: {
199: STATUS(default_nan_mode) = val;
200: }
1.1 root 201: INLINE int get_float_exception_flags(float_status *status)
202: {
203: return STATUS(float_exception_flags);
204: }
205: void set_floatx80_rounding_precision(int val STATUS_PARAM);
206:
207: /*----------------------------------------------------------------------------
208: | Routine to raise any or all of the software IEC/IEEE floating-point
209: | exception flags.
210: *----------------------------------------------------------------------------*/
1.1.1.2 root 211: void float_raise( int8 flags STATUS_PARAM);
1.1 root 212:
213: /*----------------------------------------------------------------------------
1.1.1.11 root 214: | Options to indicate which negations to perform in float*_muladd()
215: | Using these differs from negating an input or output before calling
216: | the muladd function in that this means that a NaN doesn't have its
217: | sign bit inverted before it is propagated.
218: *----------------------------------------------------------------------------*/
219: enum {
220: float_muladd_negate_c = 1,
221: float_muladd_negate_product = 2,
222: float_muladd_negate_result = 3,
223: };
224:
225: /*----------------------------------------------------------------------------
1.1 root 226: | Software IEC/IEEE integer-to-floating-point conversion routines.
227: *----------------------------------------------------------------------------*/
1.1.1.10 root 228: float32 int32_to_float32( int32 STATUS_PARAM );
229: float64 int32_to_float64( int32 STATUS_PARAM );
1.1.1.11 root 230: float32 uint32_to_float32( uint32 STATUS_PARAM );
231: float64 uint32_to_float64( uint32 STATUS_PARAM );
1.1.1.10 root 232: floatx80 int32_to_floatx80( int32 STATUS_PARAM );
233: float128 int32_to_float128( int32 STATUS_PARAM );
234: float32 int64_to_float32( int64 STATUS_PARAM );
235: float32 uint64_to_float32( uint64 STATUS_PARAM );
236: float64 int64_to_float64( int64 STATUS_PARAM );
237: float64 uint64_to_float64( uint64 STATUS_PARAM );
238: floatx80 int64_to_floatx80( int64 STATUS_PARAM );
239: float128 int64_to_float128( int64 STATUS_PARAM );
1.1 root 240:
241: /*----------------------------------------------------------------------------
1.1.1.7 root 242: | Software half-precision conversion routines.
243: *----------------------------------------------------------------------------*/
1.1.1.10 root 244: float16 float32_to_float16( float32, flag STATUS_PARAM );
245: float32 float16_to_float32( float16, flag STATUS_PARAM );
246:
247: /*----------------------------------------------------------------------------
248: | Software half-precision operations.
249: *----------------------------------------------------------------------------*/
250: int float16_is_quiet_nan( float16 );
251: int float16_is_signaling_nan( float16 );
252: float16 float16_maybe_silence_nan( float16 );
253:
254: /*----------------------------------------------------------------------------
255: | The pattern for a default generated half-precision NaN.
256: *----------------------------------------------------------------------------*/
1.1.1.11 root 257: extern const float16 float16_default_nan;
1.1.1.7 root 258:
259: /*----------------------------------------------------------------------------
1.1 root 260: | Software IEC/IEEE single-precision conversion routines.
261: *----------------------------------------------------------------------------*/
1.1.1.12! root 262: int_fast16_t float32_to_int16_round_to_zero(float32 STATUS_PARAM);
! 263: uint_fast16_t float32_to_uint16_round_to_zero(float32 STATUS_PARAM);
1.1.1.10 root 264: int32 float32_to_int32( float32 STATUS_PARAM );
265: int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM );
266: uint32 float32_to_uint32( float32 STATUS_PARAM );
267: uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
268: int64 float32_to_int64( float32 STATUS_PARAM );
269: int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM );
1.1 root 270: float64 float32_to_float64( float32 STATUS_PARAM );
271: floatx80 float32_to_floatx80( float32 STATUS_PARAM );
272: float128 float32_to_float128( float32 STATUS_PARAM );
273:
274: /*----------------------------------------------------------------------------
275: | Software IEC/IEEE single-precision operations.
276: *----------------------------------------------------------------------------*/
277: float32 float32_round_to_int( float32 STATUS_PARAM );
278: float32 float32_add( float32, float32 STATUS_PARAM );
279: float32 float32_sub( float32, float32 STATUS_PARAM );
280: float32 float32_mul( float32, float32 STATUS_PARAM );
281: float32 float32_div( float32, float32 STATUS_PARAM );
282: float32 float32_rem( float32, float32 STATUS_PARAM );
1.1.1.11 root 283: float32 float32_muladd(float32, float32, float32, int STATUS_PARAM);
1.1 root 284: float32 float32_sqrt( float32 STATUS_PARAM );
1.1.1.8 root 285: float32 float32_exp2( float32 STATUS_PARAM );
1.1.1.5 root 286: float32 float32_log2( float32 STATUS_PARAM );
1.1.1.3 root 287: int float32_eq( float32, float32 STATUS_PARAM );
288: int float32_le( float32, float32 STATUS_PARAM );
289: int float32_lt( float32, float32 STATUS_PARAM );
1.1.1.10 root 290: int float32_unordered( float32, float32 STATUS_PARAM );
291: int float32_eq_quiet( float32, float32 STATUS_PARAM );
1.1.1.3 root 292: int float32_le_quiet( float32, float32 STATUS_PARAM );
293: int float32_lt_quiet( float32, float32 STATUS_PARAM );
1.1.1.10 root 294: int float32_unordered_quiet( float32, float32 STATUS_PARAM );
1.1.1.3 root 295: int float32_compare( float32, float32 STATUS_PARAM );
296: int float32_compare_quiet( float32, float32 STATUS_PARAM );
1.1.1.10 root 297: float32 float32_min(float32, float32 STATUS_PARAM);
298: float32 float32_max(float32, float32 STATUS_PARAM);
1.1.1.9 root 299: int float32_is_quiet_nan( float32 );
1.1.1.3 root 300: int float32_is_signaling_nan( float32 );
1.1.1.9 root 301: float32 float32_maybe_silence_nan( float32 );
1.1.1.4 root 302: float32 float32_scalbn( float32, int STATUS_PARAM );
1.1 root 303:
304: INLINE float32 float32_abs(float32 a)
305: {
1.1.1.9 root 306: /* Note that abs does *not* handle NaN specially, nor does
307: * it flush denormal inputs to zero.
308: */
1.1.1.4 root 309: return make_float32(float32_val(a) & 0x7fffffff);
1.1 root 310: }
311:
312: INLINE float32 float32_chs(float32 a)
313: {
1.1.1.9 root 314: /* Note that chs does *not* handle NaN specially, nor does
315: * it flush denormal inputs to zero.
316: */
1.1.1.4 root 317: return make_float32(float32_val(a) ^ 0x80000000);
1.1 root 318: }
319:
1.1.1.5 root 320: INLINE int float32_is_infinity(float32 a)
321: {
322: return (float32_val(a) & 0x7fffffff) == 0x7f800000;
323: }
324:
325: INLINE int float32_is_neg(float32 a)
326: {
327: return float32_val(a) >> 31;
328: }
329:
330: INLINE int float32_is_zero(float32 a)
331: {
332: return (float32_val(a) & 0x7fffffff) == 0;
333: }
334:
1.1.1.9 root 335: INLINE int float32_is_any_nan(float32 a)
336: {
337: return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL);
338: }
339:
340: INLINE int float32_is_zero_or_denormal(float32 a)
341: {
342: return (float32_val(a) & 0x7f800000) == 0;
343: }
344:
1.1.1.10 root 345: INLINE float32 float32_set_sign(float32 a, int sign)
346: {
347: return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31));
348: }
349:
1.1.1.4 root 350: #define float32_zero make_float32(0)
1.1.1.5 root 351: #define float32_one make_float32(0x3f800000)
1.1.1.8 root 352: #define float32_ln2 make_float32(0x3f317218)
1.1.1.10 root 353: #define float32_pi make_float32(0x40490fdb)
354: #define float32_half make_float32(0x3f000000)
355: #define float32_infinity make_float32(0x7f800000)
356:
357:
358: /*----------------------------------------------------------------------------
359: | The pattern for a default generated single-precision NaN.
360: *----------------------------------------------------------------------------*/
1.1.1.11 root 361: extern const float32 float32_default_nan;
1.1.1.4 root 362:
1.1 root 363: /*----------------------------------------------------------------------------
364: | Software IEC/IEEE double-precision conversion routines.
365: *----------------------------------------------------------------------------*/
1.1.1.12! root 366: int_fast16_t float64_to_int16_round_to_zero(float64 STATUS_PARAM);
! 367: uint_fast16_t float64_to_uint16_round_to_zero(float64 STATUS_PARAM);
1.1.1.10 root 368: int32 float64_to_int32( float64 STATUS_PARAM );
369: int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM );
370: uint32 float64_to_uint32( float64 STATUS_PARAM );
371: uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
372: int64 float64_to_int64( float64 STATUS_PARAM );
373: int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM );
374: uint64 float64_to_uint64 (float64 a STATUS_PARAM);
375: uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM);
1.1 root 376: float32 float64_to_float32( float64 STATUS_PARAM );
377: floatx80 float64_to_floatx80( float64 STATUS_PARAM );
378: float128 float64_to_float128( float64 STATUS_PARAM );
379:
380: /*----------------------------------------------------------------------------
381: | Software IEC/IEEE double-precision operations.
382: *----------------------------------------------------------------------------*/
383: float64 float64_round_to_int( float64 STATUS_PARAM );
1.1.1.3 root 384: float64 float64_trunc_to_int( float64 STATUS_PARAM );
1.1 root 385: float64 float64_add( float64, float64 STATUS_PARAM );
386: float64 float64_sub( float64, float64 STATUS_PARAM );
387: float64 float64_mul( float64, float64 STATUS_PARAM );
388: float64 float64_div( float64, float64 STATUS_PARAM );
389: float64 float64_rem( float64, float64 STATUS_PARAM );
1.1.1.11 root 390: float64 float64_muladd(float64, float64, float64, int STATUS_PARAM);
1.1 root 391: float64 float64_sqrt( float64 STATUS_PARAM );
1.1.1.5 root 392: float64 float64_log2( float64 STATUS_PARAM );
1.1.1.3 root 393: int float64_eq( float64, float64 STATUS_PARAM );
394: int float64_le( float64, float64 STATUS_PARAM );
395: int float64_lt( float64, float64 STATUS_PARAM );
1.1.1.10 root 396: int float64_unordered( float64, float64 STATUS_PARAM );
397: int float64_eq_quiet( float64, float64 STATUS_PARAM );
1.1.1.3 root 398: int float64_le_quiet( float64, float64 STATUS_PARAM );
399: int float64_lt_quiet( float64, float64 STATUS_PARAM );
1.1.1.10 root 400: int float64_unordered_quiet( float64, float64 STATUS_PARAM );
1.1.1.3 root 401: int float64_compare( float64, float64 STATUS_PARAM );
402: int float64_compare_quiet( float64, float64 STATUS_PARAM );
1.1.1.10 root 403: float64 float64_min(float64, float64 STATUS_PARAM);
404: float64 float64_max(float64, float64 STATUS_PARAM);
1.1.1.9 root 405: int float64_is_quiet_nan( float64 a );
1.1.1.3 root 406: int float64_is_signaling_nan( float64 );
1.1.1.9 root 407: float64 float64_maybe_silence_nan( float64 );
1.1.1.4 root 408: float64 float64_scalbn( float64, int STATUS_PARAM );
1.1 root 409:
410: INLINE float64 float64_abs(float64 a)
411: {
1.1.1.9 root 412: /* Note that abs does *not* handle NaN specially, nor does
413: * it flush denormal inputs to zero.
414: */
1.1.1.4 root 415: return make_float64(float64_val(a) & 0x7fffffffffffffffLL);
1.1 root 416: }
417:
418: INLINE float64 float64_chs(float64 a)
419: {
1.1.1.9 root 420: /* Note that chs does *not* handle NaN specially, nor does
421: * it flush denormal inputs to zero.
422: */
1.1.1.4 root 423: return make_float64(float64_val(a) ^ 0x8000000000000000LL);
1.1 root 424: }
425:
1.1.1.5 root 426: INLINE int float64_is_infinity(float64 a)
427: {
428: return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL;
429: }
430:
431: INLINE int float64_is_neg(float64 a)
432: {
433: return float64_val(a) >> 63;
434: }
435:
436: INLINE int float64_is_zero(float64 a)
437: {
438: return (float64_val(a) & 0x7fffffffffffffffLL) == 0;
439: }
440:
1.1.1.9 root 441: INLINE int float64_is_any_nan(float64 a)
442: {
443: return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL);
444: }
445:
1.1.1.10 root 446: INLINE int float64_is_zero_or_denormal(float64 a)
447: {
448: return (float64_val(a) & 0x7ff0000000000000LL) == 0;
449: }
450:
451: INLINE float64 float64_set_sign(float64 a, int sign)
452: {
453: return make_float64((float64_val(a) & 0x7fffffffffffffffULL)
454: | ((int64_t)sign << 63));
455: }
456:
1.1.1.4 root 457: #define float64_zero make_float64(0)
1.1.1.5 root 458: #define float64_one make_float64(0x3ff0000000000000LL)
1.1.1.8 root 459: #define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
1.1.1.10 root 460: #define float64_pi make_float64(0x400921fb54442d18LL)
461: #define float64_half make_float64(0x3fe0000000000000LL)
462: #define float64_infinity make_float64(0x7ff0000000000000LL)
1.1.1.4 root 463:
1.1.1.10 root 464: /*----------------------------------------------------------------------------
465: | The pattern for a default generated double-precision NaN.
466: *----------------------------------------------------------------------------*/
1.1.1.11 root 467: extern const float64 float64_default_nan;
1.1 root 468:
469: /*----------------------------------------------------------------------------
470: | Software IEC/IEEE extended double-precision conversion routines.
471: *----------------------------------------------------------------------------*/
1.1.1.10 root 472: int32 floatx80_to_int32( floatx80 STATUS_PARAM );
473: int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
474: int64 floatx80_to_int64( floatx80 STATUS_PARAM );
475: int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM );
1.1 root 476: float32 floatx80_to_float32( floatx80 STATUS_PARAM );
477: float64 floatx80_to_float64( floatx80 STATUS_PARAM );
478: float128 floatx80_to_float128( floatx80 STATUS_PARAM );
479:
480: /*----------------------------------------------------------------------------
481: | Software IEC/IEEE extended double-precision operations.
482: *----------------------------------------------------------------------------*/
483: floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
484: floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM );
485: floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM );
486: floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM );
487: floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM );
488: floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
489: floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
1.1.1.3 root 490: int floatx80_eq( floatx80, floatx80 STATUS_PARAM );
491: int floatx80_le( floatx80, floatx80 STATUS_PARAM );
492: int floatx80_lt( floatx80, floatx80 STATUS_PARAM );
1.1.1.10 root 493: int floatx80_unordered( floatx80, floatx80 STATUS_PARAM );
494: int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM );
1.1.1.3 root 495: int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM );
496: int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM );
1.1.1.10 root 497: int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM );
498: int floatx80_compare( floatx80, floatx80 STATUS_PARAM );
499: int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
1.1.1.9 root 500: int floatx80_is_quiet_nan( floatx80 );
1.1.1.3 root 501: int floatx80_is_signaling_nan( floatx80 );
1.1.1.9 root 502: floatx80 floatx80_maybe_silence_nan( floatx80 );
1.1.1.4 root 503: floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM );
1.1 root 504:
505: INLINE floatx80 floatx80_abs(floatx80 a)
506: {
507: a.high &= 0x7fff;
508: return a;
509: }
510:
511: INLINE floatx80 floatx80_chs(floatx80 a)
512: {
513: a.high ^= 0x8000;
514: return a;
515: }
516:
1.1.1.5 root 517: INLINE int floatx80_is_infinity(floatx80 a)
518: {
1.1.1.10 root 519: return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL;
1.1.1.5 root 520: }
521:
522: INLINE int floatx80_is_neg(floatx80 a)
523: {
524: return a.high >> 15;
525: }
526:
527: INLINE int floatx80_is_zero(floatx80 a)
528: {
529: return (a.high & 0x7fff) == 0 && a.low == 0;
530: }
531:
1.1.1.10 root 532: INLINE int floatx80_is_zero_or_denormal(floatx80 a)
533: {
534: return (a.high & 0x7fff) == 0;
535: }
536:
1.1.1.9 root 537: INLINE int floatx80_is_any_nan(floatx80 a)
538: {
539: return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1);
540: }
541:
1.1.1.10 root 542: #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL)
543: #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL)
544: #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL)
545: #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL)
546: #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL)
547: #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL)
1.1 root 548:
1.1.1.10 root 549: /*----------------------------------------------------------------------------
1.1.1.11 root 550: | The pattern for a default generated extended double-precision NaN.
551: *----------------------------------------------------------------------------*/
552: extern const floatx80 floatx80_default_nan;
1.1 root 553:
554: /*----------------------------------------------------------------------------
555: | Software IEC/IEEE quadruple-precision conversion routines.
556: *----------------------------------------------------------------------------*/
1.1.1.10 root 557: int32 float128_to_int32( float128 STATUS_PARAM );
558: int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM );
559: int64 float128_to_int64( float128 STATUS_PARAM );
560: int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM );
1.1 root 561: float32 float128_to_float32( float128 STATUS_PARAM );
562: float64 float128_to_float64( float128 STATUS_PARAM );
563: floatx80 float128_to_floatx80( float128 STATUS_PARAM );
564:
565: /*----------------------------------------------------------------------------
566: | Software IEC/IEEE quadruple-precision operations.
567: *----------------------------------------------------------------------------*/
568: float128 float128_round_to_int( float128 STATUS_PARAM );
569: float128 float128_add( float128, float128 STATUS_PARAM );
570: float128 float128_sub( float128, float128 STATUS_PARAM );
571: float128 float128_mul( float128, float128 STATUS_PARAM );
572: float128 float128_div( float128, float128 STATUS_PARAM );
573: float128 float128_rem( float128, float128 STATUS_PARAM );
574: float128 float128_sqrt( float128 STATUS_PARAM );
1.1.1.3 root 575: int float128_eq( float128, float128 STATUS_PARAM );
576: int float128_le( float128, float128 STATUS_PARAM );
577: int float128_lt( float128, float128 STATUS_PARAM );
1.1.1.10 root 578: int float128_unordered( float128, float128 STATUS_PARAM );
579: int float128_eq_quiet( float128, float128 STATUS_PARAM );
1.1.1.3 root 580: int float128_le_quiet( float128, float128 STATUS_PARAM );
581: int float128_lt_quiet( float128, float128 STATUS_PARAM );
1.1.1.10 root 582: int float128_unordered_quiet( float128, float128 STATUS_PARAM );
1.1.1.4 root 583: int float128_compare( float128, float128 STATUS_PARAM );
584: int float128_compare_quiet( float128, float128 STATUS_PARAM );
1.1.1.9 root 585: int float128_is_quiet_nan( float128 );
1.1.1.3 root 586: int float128_is_signaling_nan( float128 );
1.1.1.9 root 587: float128 float128_maybe_silence_nan( float128 );
1.1.1.4 root 588: float128 float128_scalbn( float128, int STATUS_PARAM );
1.1 root 589:
590: INLINE float128 float128_abs(float128 a)
591: {
592: a.high &= 0x7fffffffffffffffLL;
593: return a;
594: }
595:
596: INLINE float128 float128_chs(float128 a)
597: {
598: a.high ^= 0x8000000000000000LL;
599: return a;
600: }
601:
1.1.1.5 root 602: INLINE int float128_is_infinity(float128 a)
603: {
604: return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0;
605: }
606:
607: INLINE int float128_is_neg(float128 a)
608: {
609: return a.high >> 63;
610: }
611:
612: INLINE int float128_is_zero(float128 a)
613: {
614: return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0;
615: }
616:
1.1.1.10 root 617: INLINE int float128_is_zero_or_denormal(float128 a)
618: {
619: return (a.high & 0x7fff000000000000LL) == 0;
620: }
621:
1.1.1.9 root 622: INLINE int float128_is_any_nan(float128 a)
623: {
624: return ((a.high >> 48) & 0x7fff) == 0x7fff &&
625: ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0));
626: }
627:
1.1.1.10 root 628: /*----------------------------------------------------------------------------
1.1.1.11 root 629: | The pattern for a default generated quadruple-precision NaN.
1.1.1.10 root 630: *----------------------------------------------------------------------------*/
1.1.1.11 root 631: extern const float128 float128_default_nan;
1.1 root 632:
633: #endif /* !SOFTFLOAT_H */
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.