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 typedef float float32;
37 typedef double float64;
39 typedef long double floatx80;
60 /*----------------------------------------------------------------------------
61 | Software IEC/IEEE floating-point rounding mode.
62 *----------------------------------------------------------------------------*/
63 #if (defined(_BSD) && !defined(__APPLE__)) || defined(HOST_SOLARIS)
65 float_round_nearest_even = FP_RN,
66 float_round_down = FP_RM,
67 float_round_up = FP_RP,
68 float_round_to_zero = FP_RZ
70 #elif defined(__arm__)
72 float_round_nearest_even = 0,
75 float_round_to_zero = 3
79 float_round_nearest_even = FE_TONEAREST,
80 float_round_down = FE_DOWNWARD,
81 float_round_up = FE_UPWARD,
82 float_round_to_zero = FE_TOWARDZERO
86 typedef struct float_status {
87 signed char float_rounding_mode;
89 signed char floatx80_rounding_precision;
93 void set_float_rounding_mode(int val STATUS_PARAM);
95 void set_floatx80_rounding_precision(int val STATUS_PARAM);
98 /*----------------------------------------------------------------------------
99 | Software IEC/IEEE integer-to-floating-point conversion routines.
100 *----------------------------------------------------------------------------*/
101 float32 int32_to_float32( int STATUS_PARAM);
102 float64 int32_to_float64( int STATUS_PARAM);
104 floatx80 int32_to_floatx80( int STATUS_PARAM);
107 float128 int32_to_float128( int STATUS_PARAM);
109 float32 int64_to_float32( int64_t STATUS_PARAM);
110 float64 int64_to_float64( int64_t STATUS_PARAM);
112 floatx80 int64_to_floatx80( int64_t STATUS_PARAM);
115 float128 int64_to_float128( int64_t STATUS_PARAM);
118 /*----------------------------------------------------------------------------
119 | Software IEC/IEEE single-precision conversion routines.
120 *----------------------------------------------------------------------------*/
121 int float32_to_int32( float32 STATUS_PARAM);
122 int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
123 int64_t float32_to_int64( float32 STATUS_PARAM);
124 int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM);
125 float64 float32_to_float64( float32 STATUS_PARAM);
127 floatx80 float32_to_floatx80( float32 STATUS_PARAM);
130 float128 float32_to_float128( float32 STATUS_PARAM);
133 /*----------------------------------------------------------------------------
134 | Software IEC/IEEE single-precision operations.
135 *----------------------------------------------------------------------------*/
136 float32 float32_round_to_int( float32 STATUS_PARAM);
137 INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM)
141 INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM)
145 INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM)
149 INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM)
153 float32 float32_rem( float32, float32 STATUS_PARAM);
154 float32 float32_sqrt( float32 STATUS_PARAM);
155 INLINE char float32_eq( float32 a, float32 b STATUS_PARAM)
159 INLINE char float32_le( float32 a, float32 b STATUS_PARAM)
163 INLINE char float32_lt( float32 a, float32 b STATUS_PARAM)
167 INLINE char float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
169 return a <= b && a >= b;
171 INLINE char float32_le_quiet( float32 a, float32 b STATUS_PARAM)
173 return islessequal(a, b);
175 INLINE char float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
179 INLINE char float32_unordered( float32 a, float32 b STATUS_PARAM)
181 return isunordered(a, b);
184 char float32_compare( float32, float32 STATUS_PARAM );
185 char float32_compare_quiet( float32, float32 STATUS_PARAM );
186 char float32_is_signaling_nan( float32 );
188 INLINE float32 float32_abs(float32 a)
193 INLINE float32 float32_chs(float32 a)
198 /*----------------------------------------------------------------------------
199 | Software IEC/IEEE double-precision conversion routines.
200 *----------------------------------------------------------------------------*/
201 int float64_to_int32( float64 STATUS_PARAM );
202 int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
203 int64_t float64_to_int64( float64 STATUS_PARAM );
204 int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
205 float32 float64_to_float32( float64 STATUS_PARAM );
207 floatx80 float64_to_floatx80( float64 STATUS_PARAM );
210 float128 float64_to_float128( float64 STATUS_PARAM );
213 /*----------------------------------------------------------------------------
214 | Software IEC/IEEE double-precision operations.
215 *----------------------------------------------------------------------------*/
216 float64 float64_round_to_int( float64 STATUS_PARAM );
217 float64 float64_trunc_to_int( float64 STATUS_PARAM );
218 INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM)
222 INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM)
226 INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM)
230 INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM)
234 float64 float64_rem( float64, float64 STATUS_PARAM );
235 float64 float64_sqrt( float64 STATUS_PARAM );
236 INLINE char float64_eq( float64 a, float64 b STATUS_PARAM)
240 INLINE char float64_le( float64 a, float64 b STATUS_PARAM)
244 INLINE char float64_lt( float64 a, float64 b STATUS_PARAM)
248 INLINE char float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
250 return a <= b && a >= b;
252 INLINE char float64_le_quiet( float64 a, float64 b STATUS_PARAM)
254 return islessequal(a, b);
256 INLINE char float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
261 INLINE char float64_unordered( float64 a, float64 b STATUS_PARAM)
263 return isunordered(a, b);
266 char float64_compare( float64, float64 STATUS_PARAM );
267 char float64_compare_quiet( float64, float64 STATUS_PARAM );
268 char float64_is_signaling_nan( float64 );
269 flag float64_is_nan( float64 );
271 INLINE float64 float64_abs(float64 a)
276 INLINE float64 float64_chs(float64 a)
283 /*----------------------------------------------------------------------------
284 | Software IEC/IEEE extended double-precision conversion routines.
285 *----------------------------------------------------------------------------*/
286 int floatx80_to_int32( floatx80 STATUS_PARAM );
287 int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
288 int64_t floatx80_to_int64( floatx80 STATUS_PARAM);
289 int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM);
290 float32 floatx80_to_float32( floatx80 STATUS_PARAM );
291 float64 floatx80_to_float64( floatx80 STATUS_PARAM );
293 float128 floatx80_to_float128( floatx80 STATUS_PARAM );
296 /*----------------------------------------------------------------------------
297 | Software IEC/IEEE extended double-precision operations.
298 *----------------------------------------------------------------------------*/
299 floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
300 INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM)
304 INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM)
308 INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM)
312 INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM)
316 floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
317 floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
318 INLINE char floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
322 INLINE char floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
326 INLINE char floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
330 INLINE char floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
332 return a <= b && a >= b;
334 INLINE char floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
336 return islessequal(a, b);
338 INLINE char floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
343 INLINE char floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
345 return isunordered(a, b);
348 char floatx80_compare( floatx80, floatx80 STATUS_PARAM );
349 char floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
350 char floatx80_is_signaling_nan( floatx80 );
352 INLINE floatx80 floatx80_abs(floatx80 a)
357 INLINE floatx80 floatx80_chs(floatx80 a)