bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 1 | /* Native implementation of soft float functions. Only a single status |
| 2 | context is supported */ |
| 3 | #include "softfloat.h" |
| 4 | #include <math.h> |
Juan Quintela | dfe5fff | 2009-07-27 16:12:40 +0200 | [diff] [blame] | 5 | #if defined(CONFIG_SOLARIS) |
blueswir1 | 14d483e | 2009-04-13 16:27:08 +0000 | [diff] [blame] | 6 | #include <fenv.h> |
| 7 | #endif |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 8 | |
| 9 | void set_float_rounding_mode(int val STATUS_PARAM) |
| 10 | { |
| 11 | STATUS(float_rounding_mode) = val; |
Aurelien Jarno | a167ba5 | 2009-11-29 18:00:41 +0100 | [diff] [blame] | 12 | #if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) || \ |
Juan Quintela | dfe5fff | 2009-07-27 16:12:40 +0200 | [diff] [blame] | 13 | (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10) |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 14 | fpsetround(val); |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 15 | #else |
| 16 | fesetround(val); |
| 17 | #endif |
| 18 | } |
| 19 | |
| 20 | #ifdef FLOATX80 |
| 21 | void set_floatx80_rounding_precision(int val STATUS_PARAM) |
| 22 | { |
| 23 | STATUS(floatx80_rounding_precision) = val; |
| 24 | } |
| 25 | #endif |
| 26 | |
Juan Quintela | 71e72a1 | 2009-07-27 16:12:56 +0200 | [diff] [blame] | 27 | #if defined(CONFIG_BSD) || \ |
Juan Quintela | dfe5fff | 2009-07-27 16:12:40 +0200 | [diff] [blame] | 28 | (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10) |
bellard | fdbb469 | 2006-06-14 17:32:25 +0000 | [diff] [blame] | 29 | #define lrint(d) ((int32_t)rint(d)) |
| 30 | #define llrint(d) ((int64_t)rint(d)) |
| 31 | #define lrintf(f) ((int32_t)rint(f)) |
| 32 | #define llrintf(f) ((int64_t)rint(f)) |
| 33 | #define sqrtf(f) ((float)sqrt(f)) |
| 34 | #define remainderf(fa, fb) ((float)remainder(fa, fb)) |
| 35 | #define rintf(f) ((float)rint(f)) |
Juan Quintela | dfe5fff | 2009-07-27 16:12:40 +0200 | [diff] [blame] | 36 | #if !defined(__sparc__) && \ |
| 37 | (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10) |
ths | 0475a5c | 2007-04-01 18:54:44 +0000 | [diff] [blame] | 38 | extern long double rintl(long double); |
| 39 | extern long double scalbnl(long double, int); |
| 40 | |
| 41 | long long |
| 42 | llrintl(long double x) { |
| 43 | return ((long long) rintl(x)); |
| 44 | } |
| 45 | |
| 46 | long |
| 47 | lrintl(long double x) { |
| 48 | return ((long) rintl(x)); |
| 49 | } |
| 50 | |
| 51 | long double |
| 52 | ldexpl(long double x, int n) { |
| 53 | return (scalbnl(x, n)); |
| 54 | } |
| 55 | #endif |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 56 | #endif |
| 57 | |
malc | e58ffeb | 2009-01-14 18:39:49 +0000 | [diff] [blame] | 58 | #if defined(_ARCH_PPC) |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 59 | |
| 60 | /* correct (but slow) PowerPC rint() (glibc version is incorrect) */ |
malc | 947f5fc | 2009-01-25 10:56:51 +0000 | [diff] [blame] | 61 | static double qemu_rint(double x) |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 62 | { |
| 63 | double y = 4503599627370496.0; |
| 64 | if (fabs(x) >= y) |
| 65 | return x; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 66 | if (x < 0) |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 67 | y = -y; |
| 68 | y = (x + y) - y; |
| 69 | if (y == 0.0) |
| 70 | y = copysign(y, x); |
| 71 | return y; |
| 72 | } |
| 73 | |
| 74 | #define rint qemu_rint |
| 75 | #endif |
| 76 | |
| 77 | /*---------------------------------------------------------------------------- |
| 78 | | Software IEC/IEEE integer-to-floating-point conversion routines. |
| 79 | *----------------------------------------------------------------------------*/ |
| 80 | float32 int32_to_float32(int v STATUS_PARAM) |
| 81 | { |
| 82 | return (float32)v; |
| 83 | } |
| 84 | |
j_mayer | 75d62a5 | 2007-03-20 22:10:42 +0000 | [diff] [blame] | 85 | float32 uint32_to_float32(unsigned int v STATUS_PARAM) |
| 86 | { |
| 87 | return (float32)v; |
| 88 | } |
| 89 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 90 | float64 int32_to_float64(int v STATUS_PARAM) |
| 91 | { |
| 92 | return (float64)v; |
| 93 | } |
| 94 | |
j_mayer | 75d62a5 | 2007-03-20 22:10:42 +0000 | [diff] [blame] | 95 | float64 uint32_to_float64(unsigned int v STATUS_PARAM) |
| 96 | { |
| 97 | return (float64)v; |
| 98 | } |
| 99 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 100 | #ifdef FLOATX80 |
| 101 | floatx80 int32_to_floatx80(int v STATUS_PARAM) |
| 102 | { |
| 103 | return (floatx80)v; |
| 104 | } |
| 105 | #endif |
| 106 | float32 int64_to_float32( int64_t v STATUS_PARAM) |
| 107 | { |
| 108 | return (float32)v; |
| 109 | } |
j_mayer | 75d62a5 | 2007-03-20 22:10:42 +0000 | [diff] [blame] | 110 | float32 uint64_to_float32( uint64_t v STATUS_PARAM) |
| 111 | { |
| 112 | return (float32)v; |
| 113 | } |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 114 | float64 int64_to_float64( int64_t v STATUS_PARAM) |
| 115 | { |
| 116 | return (float64)v; |
| 117 | } |
j_mayer | 75d62a5 | 2007-03-20 22:10:42 +0000 | [diff] [blame] | 118 | float64 uint64_to_float64( uint64_t v STATUS_PARAM) |
| 119 | { |
| 120 | return (float64)v; |
| 121 | } |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 122 | #ifdef FLOATX80 |
| 123 | floatx80 int64_to_floatx80( int64_t v STATUS_PARAM) |
| 124 | { |
| 125 | return (floatx80)v; |
| 126 | } |
| 127 | #endif |
| 128 | |
bellard | 1b2b0af | 2006-04-23 22:59:41 +0000 | [diff] [blame] | 129 | /* XXX: this code implements the x86 behaviour, not the IEEE one. */ |
| 130 | #if HOST_LONG_BITS == 32 |
| 131 | static inline int long_to_int32(long a) |
| 132 | { |
| 133 | return a; |
| 134 | } |
| 135 | #else |
| 136 | static inline int long_to_int32(long a) |
| 137 | { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 138 | if (a != (int32_t)a) |
bellard | 1b2b0af | 2006-04-23 22:59:41 +0000 | [diff] [blame] | 139 | a = 0x80000000; |
| 140 | return a; |
| 141 | } |
| 142 | #endif |
| 143 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 144 | /*---------------------------------------------------------------------------- |
| 145 | | Software IEC/IEEE single-precision conversion routines. |
| 146 | *----------------------------------------------------------------------------*/ |
| 147 | int float32_to_int32( float32 a STATUS_PARAM) |
| 148 | { |
bellard | 1b2b0af | 2006-04-23 22:59:41 +0000 | [diff] [blame] | 149 | return long_to_int32(lrintf(a)); |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 150 | } |
| 151 | int float32_to_int32_round_to_zero( float32 a STATUS_PARAM) |
| 152 | { |
| 153 | return (int)a; |
| 154 | } |
| 155 | int64_t float32_to_int64( float32 a STATUS_PARAM) |
| 156 | { |
| 157 | return llrintf(a); |
| 158 | } |
| 159 | |
| 160 | int64_t float32_to_int64_round_to_zero( float32 a STATUS_PARAM) |
| 161 | { |
| 162 | return (int64_t)a; |
| 163 | } |
| 164 | |
| 165 | float64 float32_to_float64( float32 a STATUS_PARAM) |
| 166 | { |
| 167 | return a; |
| 168 | } |
| 169 | #ifdef FLOATX80 |
| 170 | floatx80 float32_to_floatx80( float32 a STATUS_PARAM) |
| 171 | { |
| 172 | return a; |
| 173 | } |
| 174 | #endif |
| 175 | |
j_mayer | 75d62a5 | 2007-03-20 22:10:42 +0000 | [diff] [blame] | 176 | unsigned int float32_to_uint32( float32 a STATUS_PARAM) |
| 177 | { |
| 178 | int64_t v; |
| 179 | unsigned int res; |
| 180 | |
| 181 | v = llrintf(a); |
| 182 | if (v < 0) { |
| 183 | res = 0; |
| 184 | } else if (v > 0xffffffff) { |
| 185 | res = 0xffffffff; |
| 186 | } else { |
| 187 | res = v; |
| 188 | } |
| 189 | return res; |
| 190 | } |
| 191 | unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM) |
| 192 | { |
| 193 | int64_t v; |
| 194 | unsigned int res; |
| 195 | |
| 196 | v = (int64_t)a; |
| 197 | if (v < 0) { |
| 198 | res = 0; |
| 199 | } else if (v > 0xffffffff) { |
| 200 | res = 0xffffffff; |
| 201 | } else { |
| 202 | res = v; |
| 203 | } |
| 204 | return res; |
| 205 | } |
| 206 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 207 | /*---------------------------------------------------------------------------- |
| 208 | | Software IEC/IEEE single-precision operations. |
| 209 | *----------------------------------------------------------------------------*/ |
| 210 | float32 float32_round_to_int( float32 a STATUS_PARAM) |
| 211 | { |
| 212 | return rintf(a); |
| 213 | } |
| 214 | |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 215 | float32 float32_rem( float32 a, float32 b STATUS_PARAM) |
| 216 | { |
| 217 | return remainderf(a, b); |
| 218 | } |
| 219 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 220 | float32 float32_sqrt( float32 a STATUS_PARAM) |
| 221 | { |
| 222 | return sqrtf(a); |
| 223 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 224 | int float32_compare( float32 a, float32 b STATUS_PARAM ) |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 225 | { |
| 226 | if (a < b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 227 | return float_relation_less; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 228 | } else if (a == b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 229 | return float_relation_equal; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 230 | } else if (a > b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 231 | return float_relation_greater; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 232 | } else { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 233 | return float_relation_unordered; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 234 | } |
| 235 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 236 | int float32_compare_quiet( float32 a, float32 b STATUS_PARAM ) |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 237 | { |
| 238 | if (isless(a, b)) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 239 | return float_relation_less; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 240 | } else if (a == b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 241 | return float_relation_equal; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 242 | } else if (isgreater(a, b)) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 243 | return float_relation_greater; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 244 | } else { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 245 | return float_relation_unordered; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 246 | } |
| 247 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 248 | int float32_is_signaling_nan( float32 a1) |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 249 | { |
| 250 | float32u u; |
| 251 | uint32_t a; |
| 252 | u.f = a1; |
| 253 | a = u.i; |
| 254 | return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF ); |
| 255 | } |
| 256 | |
aurel32 | 629bd74 | 2008-12-13 11:46:15 +0000 | [diff] [blame] | 257 | int float32_is_nan( float32 a1 ) |
| 258 | { |
| 259 | float32u u; |
| 260 | uint64_t a; |
| 261 | u.f = a1; |
| 262 | a = u.i; |
| 263 | return ( 0xFF800000 < ( a<<1 ) ); |
| 264 | } |
| 265 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 266 | /*---------------------------------------------------------------------------- |
| 267 | | Software IEC/IEEE double-precision conversion routines. |
| 268 | *----------------------------------------------------------------------------*/ |
| 269 | int float64_to_int32( float64 a STATUS_PARAM) |
| 270 | { |
bellard | 1b2b0af | 2006-04-23 22:59:41 +0000 | [diff] [blame] | 271 | return long_to_int32(lrint(a)); |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 272 | } |
| 273 | int float64_to_int32_round_to_zero( float64 a STATUS_PARAM) |
| 274 | { |
| 275 | return (int)a; |
| 276 | } |
| 277 | int64_t float64_to_int64( float64 a STATUS_PARAM) |
| 278 | { |
| 279 | return llrint(a); |
| 280 | } |
| 281 | int64_t float64_to_int64_round_to_zero( float64 a STATUS_PARAM) |
| 282 | { |
| 283 | return (int64_t)a; |
| 284 | } |
| 285 | float32 float64_to_float32( float64 a STATUS_PARAM) |
| 286 | { |
| 287 | return a; |
| 288 | } |
| 289 | #ifdef FLOATX80 |
| 290 | floatx80 float64_to_floatx80( float64 a STATUS_PARAM) |
| 291 | { |
| 292 | return a; |
| 293 | } |
| 294 | #endif |
| 295 | #ifdef FLOAT128 |
| 296 | float128 float64_to_float128( float64 a STATUS_PARAM) |
| 297 | { |
| 298 | return a; |
| 299 | } |
| 300 | #endif |
| 301 | |
j_mayer | 75d62a5 | 2007-03-20 22:10:42 +0000 | [diff] [blame] | 302 | unsigned int float64_to_uint32( float64 a STATUS_PARAM) |
| 303 | { |
| 304 | int64_t v; |
| 305 | unsigned int res; |
| 306 | |
| 307 | v = llrint(a); |
| 308 | if (v < 0) { |
| 309 | res = 0; |
| 310 | } else if (v > 0xffffffff) { |
| 311 | res = 0xffffffff; |
| 312 | } else { |
| 313 | res = v; |
| 314 | } |
| 315 | return res; |
| 316 | } |
| 317 | unsigned int float64_to_uint32_round_to_zero( float64 a STATUS_PARAM) |
| 318 | { |
| 319 | int64_t v; |
| 320 | unsigned int res; |
| 321 | |
| 322 | v = (int64_t)a; |
| 323 | if (v < 0) { |
| 324 | res = 0; |
| 325 | } else if (v > 0xffffffff) { |
| 326 | res = 0xffffffff; |
| 327 | } else { |
| 328 | res = v; |
| 329 | } |
| 330 | return res; |
| 331 | } |
| 332 | uint64_t float64_to_uint64 (float64 a STATUS_PARAM) |
| 333 | { |
| 334 | int64_t v; |
| 335 | |
| 336 | v = llrint(a + (float64)INT64_MIN); |
| 337 | |
| 338 | return v - INT64_MIN; |
| 339 | } |
| 340 | uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM) |
| 341 | { |
| 342 | int64_t v; |
| 343 | |
| 344 | v = (int64_t)(a + (float64)INT64_MIN); |
| 345 | |
| 346 | return v - INT64_MIN; |
| 347 | } |
| 348 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 349 | /*---------------------------------------------------------------------------- |
| 350 | | Software IEC/IEEE double-precision operations. |
| 351 | *----------------------------------------------------------------------------*/ |
Juan Quintela | dfe5fff | 2009-07-27 16:12:40 +0200 | [diff] [blame] | 352 | #if defined(__sun__) && \ |
| 353 | (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10) |
ths | 63a654b | 2007-03-19 16:46:07 +0000 | [diff] [blame] | 354 | static inline float64 trunc(float64 x) |
| 355 | { |
| 356 | return x < 0 ? -floor(-x) : floor(x); |
| 357 | } |
| 358 | #endif |
pbrook | e6e5906 | 2006-10-22 00:18:54 +0000 | [diff] [blame] | 359 | float64 float64_trunc_to_int( float64 a STATUS_PARAM ) |
| 360 | { |
| 361 | return trunc(a); |
| 362 | } |
| 363 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 364 | float64 float64_round_to_int( float64 a STATUS_PARAM ) |
| 365 | { |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 366 | return rint(a); |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 367 | } |
| 368 | |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 369 | float64 float64_rem( float64 a, float64 b STATUS_PARAM) |
| 370 | { |
| 371 | return remainder(a, b); |
| 372 | } |
| 373 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 374 | float64 float64_sqrt( float64 a STATUS_PARAM) |
| 375 | { |
| 376 | return sqrt(a); |
| 377 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 378 | int float64_compare( float64 a, float64 b STATUS_PARAM ) |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 379 | { |
| 380 | if (a < b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 381 | return float_relation_less; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 382 | } else if (a == b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 383 | return float_relation_equal; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 384 | } else if (a > b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 385 | return float_relation_greater; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 386 | } else { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 387 | return float_relation_unordered; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 388 | } |
| 389 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 390 | int float64_compare_quiet( float64 a, float64 b STATUS_PARAM ) |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 391 | { |
| 392 | if (isless(a, b)) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 393 | return float_relation_less; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 394 | } else if (a == b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 395 | return float_relation_equal; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 396 | } else if (isgreater(a, b)) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 397 | return float_relation_greater; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 398 | } else { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 399 | return float_relation_unordered; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 400 | } |
| 401 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 402 | int float64_is_signaling_nan( float64 a1) |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 403 | { |
| 404 | float64u u; |
| 405 | uint64_t a; |
| 406 | u.f = a1; |
| 407 | a = u.i; |
| 408 | return |
| 409 | ( ( ( a>>51 ) & 0xFFF ) == 0xFFE ) |
| 410 | && ( a & LIT64( 0x0007FFFFFFFFFFFF ) ); |
| 411 | |
| 412 | } |
| 413 | |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 414 | int float64_is_nan( float64 a1 ) |
pbrook | e6e5906 | 2006-10-22 00:18:54 +0000 | [diff] [blame] | 415 | { |
| 416 | float64u u; |
| 417 | uint64_t a; |
| 418 | u.f = a1; |
| 419 | a = u.i; |
| 420 | |
aurel32 | 1b2ad2e | 2008-12-15 17:14:12 +0000 | [diff] [blame] | 421 | return ( LIT64( 0xFFF0000000000000 ) < (bits64) ( a<<1 ) ); |
pbrook | e6e5906 | 2006-10-22 00:18:54 +0000 | [diff] [blame] | 422 | |
| 423 | } |
| 424 | |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 425 | #ifdef FLOATX80 |
| 426 | |
| 427 | /*---------------------------------------------------------------------------- |
| 428 | | Software IEC/IEEE extended double-precision conversion routines. |
| 429 | *----------------------------------------------------------------------------*/ |
| 430 | int floatx80_to_int32( floatx80 a STATUS_PARAM) |
| 431 | { |
bellard | 1b2b0af | 2006-04-23 22:59:41 +0000 | [diff] [blame] | 432 | return long_to_int32(lrintl(a)); |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 433 | } |
| 434 | int floatx80_to_int32_round_to_zero( floatx80 a STATUS_PARAM) |
| 435 | { |
| 436 | return (int)a; |
| 437 | } |
| 438 | int64_t floatx80_to_int64( floatx80 a STATUS_PARAM) |
| 439 | { |
| 440 | return llrintl(a); |
| 441 | } |
| 442 | int64_t floatx80_to_int64_round_to_zero( floatx80 a STATUS_PARAM) |
| 443 | { |
| 444 | return (int64_t)a; |
| 445 | } |
| 446 | float32 floatx80_to_float32( floatx80 a STATUS_PARAM) |
| 447 | { |
| 448 | return a; |
| 449 | } |
| 450 | float64 floatx80_to_float64( floatx80 a STATUS_PARAM) |
| 451 | { |
| 452 | return a; |
| 453 | } |
| 454 | |
| 455 | /*---------------------------------------------------------------------------- |
| 456 | | Software IEC/IEEE extended double-precision operations. |
| 457 | *----------------------------------------------------------------------------*/ |
| 458 | floatx80 floatx80_round_to_int( floatx80 a STATUS_PARAM) |
| 459 | { |
| 460 | return rintl(a); |
| 461 | } |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 462 | floatx80 floatx80_rem( floatx80 a, floatx80 b STATUS_PARAM) |
| 463 | { |
| 464 | return remainderl(a, b); |
| 465 | } |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 466 | floatx80 floatx80_sqrt( floatx80 a STATUS_PARAM) |
| 467 | { |
| 468 | return sqrtl(a); |
| 469 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 470 | int floatx80_compare( floatx80 a, floatx80 b STATUS_PARAM ) |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 471 | { |
| 472 | if (a < b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 473 | return float_relation_less; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 474 | } else if (a == b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 475 | return float_relation_equal; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 476 | } else if (a > b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 477 | return float_relation_greater; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 478 | } else { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 479 | return float_relation_unordered; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 480 | } |
| 481 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 482 | int floatx80_compare_quiet( floatx80 a, floatx80 b STATUS_PARAM ) |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 483 | { |
| 484 | if (isless(a, b)) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 485 | return float_relation_less; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 486 | } else if (a == b) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 487 | return float_relation_equal; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 488 | } else if (isgreater(a, b)) { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 489 | return float_relation_greater; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 490 | } else { |
aurel32 | 30e7a22 | 2008-12-14 11:12:02 +0000 | [diff] [blame] | 491 | return float_relation_unordered; |
bellard | b109f9f | 2005-03-20 10:33:58 +0000 | [diff] [blame] | 492 | } |
| 493 | } |
bellard | 750afe9 | 2006-10-28 19:27:11 +0000 | [diff] [blame] | 494 | int floatx80_is_signaling_nan( floatx80 a1) |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 495 | { |
| 496 | floatx80u u; |
aurel32 | 1b2ad2e | 2008-12-15 17:14:12 +0000 | [diff] [blame] | 497 | uint64_t aLow; |
| 498 | u.f = a1; |
| 499 | |
| 500 | aLow = u.i.low & ~ LIT64( 0x4000000000000000 ); |
| 501 | return |
| 502 | ( ( u.i.high & 0x7FFF ) == 0x7FFF ) |
| 503 | && (bits64) ( aLow<<1 ) |
| 504 | && ( u.i.low == aLow ); |
| 505 | } |
| 506 | |
| 507 | int floatx80_is_nan( floatx80 a1 ) |
| 508 | { |
| 509 | floatx80u u; |
bellard | 158142c | 2005-03-13 16:54:06 +0000 | [diff] [blame] | 510 | u.f = a1; |
| 511 | return ( ( u.i.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( u.i.low<<1 ); |
| 512 | } |
| 513 | |
| 514 | #endif |