1 /* Native implementation of soft float functions */
4 #if (defined(CONFIG_BSD) && !defined(__APPLE__)) || defined(CONFIG_SOLARIS)
6 #define fabsf(f) ((float)fabs(f))
11 #if defined(__OpenBSD__) || defined(__NetBSD__)
12 #include <sys/param.h>
16 * Define some C99-7.12.3 classification macros and
17 * some C99-.12.4 for Solaris systems OS less than 10,
18 * or Solaris 10 systems running GCC 3.x or less.
19 * Solaris 10 with GCC4 does not need these macros as they
20 * are defined in <iso/math_c99.h> with a compiler directive
22 #if defined(CONFIG_SOLARIS) && \
23 ((CONFIG_SOLARIS_VERSION <= 9 ) || \
24 ((CONFIG_SOLARIS_VERSION >= 10) && (__GNUC__ < 4))) \
25 || (defined(__OpenBSD__) && (OpenBSD < 200811))
27 * C99 7.12.3 classification macros
29 * C99 7.12.14 comparison macros
31 * ... do not work on Solaris 10 using GNU CC 3.4.x.
32 * Try to workaround the missing / broken C99 math macros.
34 #if defined(__OpenBSD__)
35 #define unordered(x, y) (isnan(x) || isnan(y))
40 #define isgreater(x, y) __builtin_isgreater(x, y)
42 #ifndef isgreaterequal
43 #define isgreaterequal(x, y) __builtin_isgreaterequal(x, y)
46 #define isless(x, y) __builtin_isless(x, y)
49 #define islessequal(x, y) __builtin_islessequal(x, y)
52 #define isunordered(x, y) __builtin_isunordered(x, y)
57 #define isnormal(x) (fpclass(x) >= FP_NZERO)
58 #define isgreater(x, y) ((!unordered(x, y)) && ((x) > (y)))
59 #define isgreaterequal(x, y) ((!unordered(x, y)) && ((x) >= (y)))
60 #define isless(x, y) ((!unordered(x, y)) && ((x) < (y)))
61 #define islessequal(x, y) ((!unordered(x, y)) && ((x) <= (y)))
62 #define isunordered(x,y) unordered(x, y)
65 #if defined(__sun__) && !defined(NEED_LIBSUNMATH)
69 (sizeof (x) == sizeof (long double) ? isnan_ld (x) \
70 : sizeof (x) == sizeof (double) ? isnan_d (x) \
72 static inline int isnan_f (float x) { return x != x; }
73 static inline int isnan_d (double x) { return x != x; }
74 static inline int isnan_ld (long double x) { return x != x; }
79 (sizeof (x) == sizeof (long double) ? isinf_ld (x) \
80 : sizeof (x) == sizeof (double) ? isinf_d (x) \
82 static inline int isinf_f (float x) { return isnan (x - x); }
83 static inline int isinf_d (double x) { return isnan (x - x); }
84 static inline int isinf_ld (long double x) { return isnan (x - x); }
88 typedef float float32;
89 typedef double float64;
91 typedef long double floatx80;
112 /*----------------------------------------------------------------------------
113 | Software IEC/IEEE floating-point rounding mode.
114 *----------------------------------------------------------------------------*/
115 #if (defined(CONFIG_BSD) && !defined(__APPLE__)) || defined(CONFIG_SOLARIS)
116 #if defined(__OpenBSD__)
122 float_round_nearest_even = FP_RN,
123 float_round_down = FP_RM,
124 float_round_up = FP_RP,
125 float_round_to_zero = FP_RZ
127 #elif defined(__arm__)
129 float_round_nearest_even = 0,
130 float_round_down = 1,
132 float_round_to_zero = 3
136 float_round_nearest_even = FE_TONEAREST,
137 float_round_down = FE_DOWNWARD,
138 float_round_up = FE_UPWARD,
139 float_round_to_zero = FE_TOWARDZERO
143 typedef struct float_status {
144 int float_rounding_mode;
146 int floatx80_rounding_precision;
150 void set_float_rounding_mode(int val STATUS_PARAM);
152 void set_floatx80_rounding_precision(int val STATUS_PARAM);
155 /*----------------------------------------------------------------------------
156 | Software IEC/IEEE integer-to-floating-point conversion routines.
157 *----------------------------------------------------------------------------*/
158 float32 int32_to_float32( int STATUS_PARAM);
159 float32 uint32_to_float32( unsigned int STATUS_PARAM);
160 float64 int32_to_float64( int STATUS_PARAM);
161 float64 uint32_to_float64( unsigned int STATUS_PARAM);
163 floatx80 int32_to_floatx80( int STATUS_PARAM);
166 float128 int32_to_float128( int STATUS_PARAM);
168 float32 int64_to_float32( int64_t STATUS_PARAM);
169 float32 uint64_to_float32( uint64_t STATUS_PARAM);
170 float64 int64_to_float64( int64_t STATUS_PARAM);
171 float64 uint64_to_float64( uint64_t v STATUS_PARAM);
173 floatx80 int64_to_floatx80( int64_t STATUS_PARAM);
176 float128 int64_to_float128( int64_t STATUS_PARAM);
179 /*----------------------------------------------------------------------------
180 | Software IEC/IEEE single-precision conversion routines.
181 *----------------------------------------------------------------------------*/
182 int float32_to_int32( float32 STATUS_PARAM);
183 int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
184 unsigned int float32_to_uint32( float32 a STATUS_PARAM);
185 unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM);
186 int64_t float32_to_int64( float32 STATUS_PARAM);
187 int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM);
188 float64 float32_to_float64( float32 STATUS_PARAM);
190 floatx80 float32_to_floatx80( float32 STATUS_PARAM);
193 float128 float32_to_float128( float32 STATUS_PARAM);
196 /*----------------------------------------------------------------------------
197 | Software IEC/IEEE single-precision operations.
198 *----------------------------------------------------------------------------*/
199 float32 float32_round_to_int( float32 STATUS_PARAM);
200 INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM)
204 INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM)
208 INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM)
212 INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM)
216 float32 float32_rem( float32, float32 STATUS_PARAM);
217 float32 float32_sqrt( float32 STATUS_PARAM);
218 INLINE int float32_eq( float32 a, float32 b STATUS_PARAM)
222 INLINE int float32_le( float32 a, float32 b STATUS_PARAM)
226 INLINE int float32_lt( float32 a, float32 b STATUS_PARAM)
230 INLINE int float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
232 return a <= b && a >= b;
234 INLINE int float32_le_quiet( float32 a, float32 b STATUS_PARAM)
236 return islessequal(a, b);
238 INLINE int float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
242 INLINE int float32_unordered( float32 a, float32 b STATUS_PARAM)
244 return isunordered(a, b);
247 int float32_compare( float32, float32 STATUS_PARAM );
248 int float32_compare_quiet( float32, float32 STATUS_PARAM );
249 int float32_is_signaling_nan( float32 );
250 int float32_is_nan( float32 );
252 INLINE float32 float32_abs(float32 a)
257 INLINE float32 float32_chs(float32 a)
262 INLINE float32 float32_is_infinity(float32 a)
264 return fpclassify(a) == FP_INFINITE;
267 INLINE float32 float32_is_neg(float32 a)
274 INLINE float32 float32_is_zero(float32 a)
276 return fpclassify(a) == FP_ZERO;
279 INLINE float32 float32_scalbn(float32 a, int n)
281 return scalbnf(a, n);
284 /*----------------------------------------------------------------------------
285 | Software IEC/IEEE double-precision conversion routines.
286 *----------------------------------------------------------------------------*/
287 int float64_to_int32( float64 STATUS_PARAM );
288 int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
289 unsigned int float64_to_uint32( float64 STATUS_PARAM );
290 unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
291 int64_t float64_to_int64( float64 STATUS_PARAM );
292 int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
293 uint64_t float64_to_uint64( float64 STATUS_PARAM );
294 uint64_t float64_to_uint64_round_to_zero( float64 STATUS_PARAM );
295 float32 float64_to_float32( float64 STATUS_PARAM );
297 floatx80 float64_to_floatx80( float64 STATUS_PARAM );
300 float128 float64_to_float128( float64 STATUS_PARAM );
303 /*----------------------------------------------------------------------------
304 | Software IEC/IEEE double-precision operations.
305 *----------------------------------------------------------------------------*/
306 float64 float64_round_to_int( float64 STATUS_PARAM );
307 float64 float64_trunc_to_int( float64 STATUS_PARAM );
308 INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM)
312 INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM)
316 INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM)
320 INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM)
324 float64 float64_rem( float64, float64 STATUS_PARAM );
325 float64 float64_sqrt( float64 STATUS_PARAM );
326 INLINE int float64_eq( float64 a, float64 b STATUS_PARAM)
330 INLINE int float64_le( float64 a, float64 b STATUS_PARAM)
334 INLINE int float64_lt( float64 a, float64 b STATUS_PARAM)
338 INLINE int float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
340 return a <= b && a >= b;
342 INLINE int float64_le_quiet( float64 a, float64 b STATUS_PARAM)
344 return islessequal(a, b);
346 INLINE int float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
351 INLINE int float64_unordered( float64 a, float64 b STATUS_PARAM)
353 return isunordered(a, b);
356 int float64_compare( float64, float64 STATUS_PARAM );
357 int float64_compare_quiet( float64, float64 STATUS_PARAM );
358 int float64_is_signaling_nan( float64 );
359 int float64_is_nan( float64 );
361 INLINE float64 float64_abs(float64 a)
366 INLINE float64 float64_chs(float64 a)
371 INLINE float64 float64_is_infinity(float64 a)
373 return fpclassify(a) == FP_INFINITE;
376 INLINE float64 float64_is_neg(float64 a)
383 INLINE float64 float64_is_zero(float64 a)
385 return fpclassify(a) == FP_ZERO;
388 INLINE float64 float64_scalbn(float64 a, int n)
395 /*----------------------------------------------------------------------------
396 | Software IEC/IEEE extended double-precision conversion routines.
397 *----------------------------------------------------------------------------*/
398 int floatx80_to_int32( floatx80 STATUS_PARAM );
399 int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
400 int64_t floatx80_to_int64( floatx80 STATUS_PARAM);
401 int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM);
402 float32 floatx80_to_float32( floatx80 STATUS_PARAM );
403 float64 floatx80_to_float64( floatx80 STATUS_PARAM );
405 float128 floatx80_to_float128( floatx80 STATUS_PARAM );
408 /*----------------------------------------------------------------------------
409 | Software IEC/IEEE extended double-precision operations.
410 *----------------------------------------------------------------------------*/
411 floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
412 INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM)
416 INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM)
420 INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM)
424 INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM)
428 floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
429 floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
430 INLINE int floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
434 INLINE int floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
438 INLINE int floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
442 INLINE int floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
444 return a <= b && a >= b;
446 INLINE int floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
448 return islessequal(a, b);
450 INLINE int floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
455 INLINE int floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
457 return isunordered(a, b);
460 int floatx80_compare( floatx80, floatx80 STATUS_PARAM );
461 int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
462 int floatx80_is_signaling_nan( floatx80 );
463 int floatx80_is_nan( floatx80 );
465 INLINE floatx80 floatx80_abs(floatx80 a)
470 INLINE floatx80 floatx80_chs(floatx80 a)
475 INLINE floatx80 floatx80_is_infinity(floatx80 a)
477 return fpclassify(a) == FP_INFINITE;
480 INLINE floatx80 floatx80_is_neg(floatx80 a)
484 return u.i.high >> 15;
487 INLINE floatx80 floatx80_is_zero(floatx80 a)
489 return fpclassify(a) == FP_ZERO;
492 INLINE floatx80 floatx80_scalbn(floatx80 a, int n)
494 return scalbnl(a, n);