1 /* Native implementation of soft float functions */
4 #if (defined(_BSD) && !defined(__APPLE__)) || defined(HOST_SOLARIS)
6 #define fabsf(f) ((float)fabs(f))
12 * Define some C99-7.12.3 classification macros and
13 * some C99-.12.4 for Solaris systems OS less than 10,
14 * or Solaris 10 systems running GCC 3.x or less.
15 * Solaris 10 with GCC4 does not need these macros as they
16 * are defined in <iso/math_c99.h> with a compiler directive
18 #if defined(HOST_SOLARIS) && (( HOST_SOLARIS <= 9 ) || ((HOST_SOLARIS >= 10) && (__GNUC__ <= 4)))
20 * C99 7.12.3 classification macros
22 * C99 7.12.14 comparison macros
24 * ... do not work on Solaris 10 using GNU CC 3.4.x.
25 * Try to workaround the missing / broken C99 math macros.
28 #define isnormal(x) (fpclass(x) >= FP_NZERO)
29 #define isgreater(x, y) ((!unordered(x, y)) && ((x) > (y)))
30 #define isgreaterequal(x, y) ((!unordered(x, y)) && ((x) >= (y)))
31 #define isless(x, y) ((!unordered(x, y)) && ((x) < (y)))
32 #define islessequal(x, y) ((!unordered(x, y)) && ((x) <= (y)))
33 #define isunordered(x,y) unordered(x, y)
36 #if defined(__sun__) && !defined(NEED_LIBSUNMATH)
40 (sizeof (x) == sizeof (long double) ? isnan_ld (x) \
41 : sizeof (x) == sizeof (double) ? isnan_d (x) \
43 static inline int isnan_f (float x) { return x != x; }
44 static inline int isnan_d (double x) { return x != x; }
45 static inline int isnan_ld (long double x) { return x != x; }
50 (sizeof (x) == sizeof (long double) ? isinf_ld (x) \
51 : sizeof (x) == sizeof (double) ? isinf_d (x) \
53 static inline int isinf_f (float x) { return isnan (x - x); }
54 static inline int isinf_d (double x) { return isnan (x - x); }
55 static inline int isinf_ld (long double x) { return isnan (x - x); }
59 typedef float float32;
60 typedef double float64;
62 typedef long double floatx80;
83 /*----------------------------------------------------------------------------
84 | Software IEC/IEEE floating-point rounding mode.
85 *----------------------------------------------------------------------------*/
86 #if (defined(_BSD) && !defined(__APPLE__)) || defined(HOST_SOLARIS)
88 float_round_nearest_even = FP_RN,
89 float_round_down = FP_RM,
90 float_round_up = FP_RP,
91 float_round_to_zero = FP_RZ
93 #elif defined(__arm__)
95 float_round_nearest_even = 0,
98 float_round_to_zero = 3
102 float_round_nearest_even = FE_TONEAREST,
103 float_round_down = FE_DOWNWARD,
104 float_round_up = FE_UPWARD,
105 float_round_to_zero = FE_TOWARDZERO
109 typedef struct float_status {
110 signed char float_rounding_mode;
112 signed char floatx80_rounding_precision;
116 void set_float_rounding_mode(int val STATUS_PARAM);
118 void set_floatx80_rounding_precision(int val STATUS_PARAM);
121 /*----------------------------------------------------------------------------
122 | Software IEC/IEEE integer-to-floating-point conversion routines.
123 *----------------------------------------------------------------------------*/
124 float32 int32_to_float32( int STATUS_PARAM);
125 float32 uint32_to_float32( unsigned int STATUS_PARAM);
126 float64 int32_to_float64( int STATUS_PARAM);
127 float64 uint32_to_float64( unsigned int STATUS_PARAM);
129 floatx80 int32_to_floatx80( int STATUS_PARAM);
132 float128 int32_to_float128( int STATUS_PARAM);
134 float32 int64_to_float32( int64_t STATUS_PARAM);
135 float32 uint64_to_float32( uint64_t STATUS_PARAM);
136 float64 int64_to_float64( int64_t STATUS_PARAM);
137 float64 uint64_to_float64( uint64_t v STATUS_PARAM);
139 floatx80 int64_to_floatx80( int64_t STATUS_PARAM);
142 float128 int64_to_float128( int64_t STATUS_PARAM);
145 /*----------------------------------------------------------------------------
146 | Software IEC/IEEE single-precision conversion routines.
147 *----------------------------------------------------------------------------*/
148 int float32_to_int32( float32 STATUS_PARAM);
149 int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
150 unsigned int float32_to_uint32( float32 a STATUS_PARAM);
151 unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM);
152 int64_t float32_to_int64( float32 STATUS_PARAM);
153 int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM);
154 float64 float32_to_float64( float32 STATUS_PARAM);
156 floatx80 float32_to_floatx80( float32 STATUS_PARAM);
159 float128 float32_to_float128( float32 STATUS_PARAM);
162 /*----------------------------------------------------------------------------
163 | Software IEC/IEEE single-precision operations.
164 *----------------------------------------------------------------------------*/
165 float32 float32_round_to_int( float32 STATUS_PARAM);
166 INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM)
170 INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM)
174 INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM)
178 INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM)
182 float32 float32_rem( float32, float32 STATUS_PARAM);
183 float32 float32_sqrt( float32 STATUS_PARAM);
184 INLINE int float32_eq( float32 a, float32 b STATUS_PARAM)
188 INLINE int float32_le( float32 a, float32 b STATUS_PARAM)
192 INLINE int float32_lt( float32 a, float32 b STATUS_PARAM)
196 INLINE int float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
198 return a <= b && a >= b;
200 INLINE int float32_le_quiet( float32 a, float32 b STATUS_PARAM)
202 return islessequal(a, b);
204 INLINE int float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
208 INLINE int float32_unordered( float32 a, float32 b STATUS_PARAM)
210 return isunordered(a, b);
213 int float32_compare( float32, float32 STATUS_PARAM );
214 int float32_compare_quiet( float32, float32 STATUS_PARAM );
215 int float32_is_signaling_nan( float32 );
217 INLINE float32 float32_abs(float32 a)
222 INLINE float32 float32_chs(float32 a)
227 INLINE float32 float32_scalbn(float32 a, int n)
229 return scalbnf(a, n);
232 /*----------------------------------------------------------------------------
233 | Software IEC/IEEE double-precision conversion routines.
234 *----------------------------------------------------------------------------*/
235 int float64_to_int32( float64 STATUS_PARAM );
236 int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
237 unsigned int float64_to_uint32( float64 STATUS_PARAM );
238 unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
239 int64_t float64_to_int64( float64 STATUS_PARAM );
240 int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
241 uint64_t float64_to_uint64( float64 STATUS_PARAM );
242 uint64_t float64_to_uint64_round_to_zero( float64 STATUS_PARAM );
243 float32 float64_to_float32( float64 STATUS_PARAM );
245 floatx80 float64_to_floatx80( float64 STATUS_PARAM );
248 float128 float64_to_float128( float64 STATUS_PARAM );
251 /*----------------------------------------------------------------------------
252 | Software IEC/IEEE double-precision operations.
253 *----------------------------------------------------------------------------*/
254 float64 float64_round_to_int( float64 STATUS_PARAM );
255 float64 float64_trunc_to_int( float64 STATUS_PARAM );
256 INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM)
260 INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM)
264 INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM)
268 INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM)
272 float64 float64_rem( float64, float64 STATUS_PARAM );
273 float64 float64_sqrt( float64 STATUS_PARAM );
274 INLINE int float64_eq( float64 a, float64 b STATUS_PARAM)
278 INLINE int float64_le( float64 a, float64 b STATUS_PARAM)
282 INLINE int float64_lt( float64 a, float64 b STATUS_PARAM)
286 INLINE int float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
288 return a <= b && a >= b;
290 INLINE int float64_le_quiet( float64 a, float64 b STATUS_PARAM)
292 return islessequal(a, b);
294 INLINE int float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
299 INLINE int float64_unordered( float64 a, float64 b STATUS_PARAM)
301 return isunordered(a, b);
304 int float64_compare( float64, float64 STATUS_PARAM );
305 int float64_compare_quiet( float64, float64 STATUS_PARAM );
306 int float64_is_signaling_nan( float64 );
307 int float64_is_nan( float64 );
309 INLINE float64 float64_abs(float64 a)
314 INLINE float64 float64_chs(float64 a)
319 INLINE float64 float64_scalbn(float64 a, int n)
326 /*----------------------------------------------------------------------------
327 | Software IEC/IEEE extended double-precision conversion routines.
328 *----------------------------------------------------------------------------*/
329 int floatx80_to_int32( floatx80 STATUS_PARAM );
330 int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
331 int64_t floatx80_to_int64( floatx80 STATUS_PARAM);
332 int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM);
333 float32 floatx80_to_float32( floatx80 STATUS_PARAM );
334 float64 floatx80_to_float64( floatx80 STATUS_PARAM );
336 float128 floatx80_to_float128( floatx80 STATUS_PARAM );
339 /*----------------------------------------------------------------------------
340 | Software IEC/IEEE extended double-precision operations.
341 *----------------------------------------------------------------------------*/
342 floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
343 INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM)
347 INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM)
351 INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM)
355 INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM)
359 floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
360 floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
361 INLINE int floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
365 INLINE int floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
369 INLINE int floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
373 INLINE int floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
375 return a <= b && a >= b;
377 INLINE int floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
379 return islessequal(a, b);
381 INLINE int floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
386 INLINE int floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
388 return isunordered(a, b);
391 int floatx80_compare( floatx80, floatx80 STATUS_PARAM );
392 int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
393 int floatx80_is_signaling_nan( floatx80 );
395 INLINE floatx80 floatx80_abs(floatx80 a)
400 INLINE floatx80 floatx80_chs(floatx80 a)
405 INLINE floatx80 floatx80_scalbn(floatx80 a, int n)
407 return scalbnl(a, n);