David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 1 | /* |
| 2 | * QEMU float support |
| 3 | * |
| 4 | * Derived from SoftFloat. |
| 5 | */ |
| 6 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 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 | |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 41 | #if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 42 | #include <sunmath.h> |
| 43 | #endif |
| 44 | |
| 45 | #include <inttypes.h> |
| 46 | #include "config.h" |
| 47 | |
| 48 | /*---------------------------------------------------------------------------- |
| 49 | | Each of the following `typedef's defines the most convenient type that holds |
| 50 | | integers of at least as many bits as specified. For example, `uint8' should |
| 51 | | be the most convenient type that can hold unsigned integers of as many as |
| 52 | | 8 bits. The `flag' type must be able to hold either a 0 or 1. For most |
| 53 | | implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed |
| 54 | | to the same as `int'. |
| 55 | *----------------------------------------------------------------------------*/ |
| 56 | typedef uint8_t flag; |
| 57 | typedef uint8_t uint8; |
| 58 | typedef int8_t int8; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 59 | #ifndef _AIX |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 60 | typedef int uint16; |
| 61 | typedef int int16; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 62 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 63 | typedef unsigned int uint32; |
| 64 | typedef signed int int32; |
| 65 | typedef uint64_t uint64; |
| 66 | typedef int64_t int64; |
| 67 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 68 | #define LIT64( a ) a##LL |
| 69 | #define INLINE static inline |
| 70 | |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 71 | #if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32) |
| 72 | #define SNAN_BIT_IS_ONE 1 |
| 73 | #else |
| 74 | #define SNAN_BIT_IS_ONE 0 |
| 75 | #endif |
| 76 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 77 | /*---------------------------------------------------------------------------- |
| 78 | | The macro `FLOATX80' must be defined to enable the extended double-precision |
| 79 | | floating-point format `floatx80'. If this macro is not defined, the |
| 80 | | `floatx80' type will not be defined, and none of the functions that either |
| 81 | | input or output the `floatx80' type will be defined. The same applies to |
| 82 | | the `FLOAT128' macro and the quadruple-precision format `float128'. |
| 83 | *----------------------------------------------------------------------------*/ |
| 84 | #ifdef CONFIG_SOFTFLOAT |
| 85 | /* bit exact soft float support */ |
| 86 | #define FLOATX80 |
| 87 | #define FLOAT128 |
| 88 | #else |
| 89 | /* native float support */ |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 90 | #if (defined(__i386__) || defined(__x86_64__)) && !defined(CONFIG_BSD) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 91 | #define FLOATX80 |
| 92 | #endif |
| 93 | #endif /* !CONFIG_SOFTFLOAT */ |
| 94 | |
| 95 | #define STATUS_PARAM , float_status *status |
| 96 | #define STATUS(field) status->field |
| 97 | #define STATUS_VAR , status |
| 98 | |
| 99 | /*---------------------------------------------------------------------------- |
| 100 | | Software IEC/IEEE floating-point ordering relations |
| 101 | *----------------------------------------------------------------------------*/ |
| 102 | enum { |
| 103 | float_relation_less = -1, |
| 104 | float_relation_equal = 0, |
| 105 | float_relation_greater = 1, |
| 106 | float_relation_unordered = 2 |
| 107 | }; |
| 108 | |
| 109 | #ifdef CONFIG_SOFTFLOAT |
| 110 | /*---------------------------------------------------------------------------- |
| 111 | | Software IEC/IEEE floating-point types. |
| 112 | *----------------------------------------------------------------------------*/ |
| 113 | /* Use structures for soft-float types. This prevents accidentally mixing |
| 114 | them with native int/float types. A sufficiently clever compiler and |
| 115 | sane ABI should be able to see though these structs. However |
| 116 | x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */ |
| 117 | //#define USE_SOFTFLOAT_STRUCT_TYPES |
| 118 | #ifdef USE_SOFTFLOAT_STRUCT_TYPES |
| 119 | typedef struct { |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 120 | uint16_t v; |
| 121 | } float16; |
| 122 | #define float16_val(x) (((float16)(x)).v) |
| 123 | #define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; }) |
| 124 | #define const_float16(x) { x } |
| 125 | typedef struct { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 126 | uint32_t v; |
| 127 | } float32; |
| 128 | /* The cast ensures an error if the wrong type is passed. */ |
| 129 | #define float32_val(x) (((float32)(x)).v) |
| 130 | #define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; }) |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 131 | #define const_float32(x) { x } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 132 | typedef struct { |
| 133 | uint64_t v; |
| 134 | } float64; |
| 135 | #define float64_val(x) (((float64)(x)).v) |
| 136 | #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; }) |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 137 | #define const_float64(x) { x } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 138 | #else |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 139 | typedef uint16_t float16; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 140 | typedef uint32_t float32; |
| 141 | typedef uint64_t float64; |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 142 | #define float16_val(x) (x) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 143 | #define float32_val(x) (x) |
| 144 | #define float64_val(x) (x) |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 145 | #define make_float16(x) (x) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 146 | #define make_float32(x) (x) |
| 147 | #define make_float64(x) (x) |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 148 | #define const_float16(x) (x) |
| 149 | #define const_float32(x) (x) |
| 150 | #define const_float64(x) (x) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 151 | #endif |
| 152 | #ifdef FLOATX80 |
| 153 | typedef struct { |
| 154 | uint64_t low; |
| 155 | uint16_t high; |
| 156 | } floatx80; |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 157 | #define make_floatx80(exp, mant) ((floatx80) { mant, exp }) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 158 | #endif |
| 159 | #ifdef FLOAT128 |
| 160 | typedef struct { |
David 'Digit' Turner | 20894ae | 2010-05-10 17:07:36 -0700 | [diff] [blame] | 161 | #ifdef HOST_WORDS_BIGENDIAN |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 162 | uint64_t high, low; |
| 163 | #else |
| 164 | uint64_t low, high; |
| 165 | #endif |
| 166 | } float128; |
| 167 | #endif |
| 168 | |
| 169 | /*---------------------------------------------------------------------------- |
| 170 | | Software IEC/IEEE floating-point underflow tininess-detection mode. |
| 171 | *----------------------------------------------------------------------------*/ |
| 172 | enum { |
| 173 | float_tininess_after_rounding = 0, |
| 174 | float_tininess_before_rounding = 1 |
| 175 | }; |
| 176 | |
| 177 | /*---------------------------------------------------------------------------- |
| 178 | | Software IEC/IEEE floating-point rounding mode. |
| 179 | *----------------------------------------------------------------------------*/ |
| 180 | enum { |
| 181 | float_round_nearest_even = 0, |
| 182 | float_round_down = 1, |
| 183 | float_round_up = 2, |
| 184 | float_round_to_zero = 3 |
| 185 | }; |
| 186 | |
| 187 | /*---------------------------------------------------------------------------- |
| 188 | | Software IEC/IEEE floating-point exception flags. |
| 189 | *----------------------------------------------------------------------------*/ |
| 190 | enum { |
| 191 | float_flag_invalid = 1, |
| 192 | float_flag_divbyzero = 4, |
| 193 | float_flag_overflow = 8, |
| 194 | float_flag_underflow = 16, |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 195 | float_flag_inexact = 32, |
| 196 | float_flag_input_denormal = 64 |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 197 | }; |
| 198 | |
| 199 | typedef struct float_status { |
| 200 | signed char float_detect_tininess; |
| 201 | signed char float_rounding_mode; |
| 202 | signed char float_exception_flags; |
| 203 | #ifdef FLOATX80 |
| 204 | signed char floatx80_rounding_precision; |
| 205 | #endif |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 206 | /* should denormalised results go to zero and set the inexact flag? */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 207 | flag flush_to_zero; |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 208 | /* should denormalised inputs go to zero and set the input_denormal flag? */ |
| 209 | flag flush_inputs_to_zero; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 210 | flag default_nan_mode; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 211 | } float_status; |
| 212 | |
| 213 | void set_float_rounding_mode(int val STATUS_PARAM); |
| 214 | void set_float_exception_flags(int val STATUS_PARAM); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 215 | INLINE void set_float_detect_tininess(int val STATUS_PARAM) |
| 216 | { |
| 217 | STATUS(float_detect_tininess) = val; |
| 218 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 219 | INLINE void set_flush_to_zero(flag val STATUS_PARAM) |
| 220 | { |
| 221 | STATUS(flush_to_zero) = val; |
| 222 | } |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 223 | INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM) |
| 224 | { |
| 225 | STATUS(flush_inputs_to_zero) = val; |
| 226 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 227 | INLINE void set_default_nan_mode(flag val STATUS_PARAM) |
| 228 | { |
| 229 | STATUS(default_nan_mode) = val; |
| 230 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 231 | INLINE int get_float_exception_flags(float_status *status) |
| 232 | { |
| 233 | return STATUS(float_exception_flags); |
| 234 | } |
| 235 | #ifdef FLOATX80 |
| 236 | void set_floatx80_rounding_precision(int val STATUS_PARAM); |
| 237 | #endif |
| 238 | |
| 239 | /*---------------------------------------------------------------------------- |
| 240 | | Routine to raise any or all of the software IEC/IEEE floating-point |
| 241 | | exception flags. |
| 242 | *----------------------------------------------------------------------------*/ |
| 243 | void float_raise( int8 flags STATUS_PARAM); |
| 244 | |
| 245 | /*---------------------------------------------------------------------------- |
| 246 | | Software IEC/IEEE integer-to-floating-point conversion routines. |
| 247 | *----------------------------------------------------------------------------*/ |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 248 | float32 int32_to_float32( int32 STATUS_PARAM ); |
| 249 | float64 int32_to_float64( int32 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 250 | float32 uint32_to_float32( unsigned int STATUS_PARAM ); |
| 251 | float64 uint32_to_float64( unsigned int STATUS_PARAM ); |
| 252 | #ifdef FLOATX80 |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 253 | floatx80 int32_to_floatx80( int32 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 254 | #endif |
| 255 | #ifdef FLOAT128 |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 256 | float128 int32_to_float128( int32 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 257 | #endif |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 258 | float32 int64_to_float32( int64 STATUS_PARAM ); |
| 259 | float32 uint64_to_float32( uint64 STATUS_PARAM ); |
| 260 | float64 int64_to_float64( int64 STATUS_PARAM ); |
| 261 | float64 uint64_to_float64( uint64 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 262 | #ifdef FLOATX80 |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 263 | floatx80 int64_to_floatx80( int64 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 264 | #endif |
| 265 | #ifdef FLOAT128 |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 266 | float128 int64_to_float128( int64 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 267 | #endif |
| 268 | |
| 269 | /*---------------------------------------------------------------------------- |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 270 | | Software half-precision conversion routines. |
| 271 | *----------------------------------------------------------------------------*/ |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 272 | float16 float32_to_float16( float32, flag STATUS_PARAM ); |
| 273 | float32 float16_to_float32( float16, flag STATUS_PARAM ); |
| 274 | |
| 275 | /*---------------------------------------------------------------------------- |
| 276 | | Software half-precision operations. |
| 277 | *----------------------------------------------------------------------------*/ |
| 278 | int float16_is_quiet_nan( float16 ); |
| 279 | int float16_is_signaling_nan( float16 ); |
| 280 | float16 float16_maybe_silence_nan( float16 ); |
| 281 | |
| 282 | /*---------------------------------------------------------------------------- |
| 283 | | The pattern for a default generated half-precision NaN. |
| 284 | *----------------------------------------------------------------------------*/ |
| 285 | #if defined(TARGET_ARM) |
| 286 | #define float16_default_nan make_float16(0x7E00) |
| 287 | #elif SNAN_BIT_IS_ONE |
| 288 | #define float16_default_nan make_float16(0x7DFF) |
| 289 | #else |
| 290 | #define float16_default_nan make_float16(0xFE00) |
| 291 | #endif |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 292 | |
| 293 | /*---------------------------------------------------------------------------- |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 294 | | Software IEC/IEEE single-precision conversion routines. |
| 295 | *----------------------------------------------------------------------------*/ |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 296 | int16 float32_to_int16_round_to_zero( float32 STATUS_PARAM ); |
| 297 | unsigned int float32_to_uint16_round_to_zero( float32 STATUS_PARAM ); |
| 298 | int32 float32_to_int32( float32 STATUS_PARAM ); |
| 299 | int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM ); |
| 300 | uint32 float32_to_uint32( float32 STATUS_PARAM ); |
| 301 | uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM ); |
| 302 | int64 float32_to_int64( float32 STATUS_PARAM ); |
| 303 | int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 304 | float64 float32_to_float64( float32 STATUS_PARAM ); |
| 305 | #ifdef FLOATX80 |
| 306 | floatx80 float32_to_floatx80( float32 STATUS_PARAM ); |
| 307 | #endif |
| 308 | #ifdef FLOAT128 |
| 309 | float128 float32_to_float128( float32 STATUS_PARAM ); |
| 310 | #endif |
| 311 | |
| 312 | /*---------------------------------------------------------------------------- |
| 313 | | Software IEC/IEEE single-precision operations. |
| 314 | *----------------------------------------------------------------------------*/ |
| 315 | float32 float32_round_to_int( float32 STATUS_PARAM ); |
| 316 | float32 float32_add( float32, float32 STATUS_PARAM ); |
| 317 | float32 float32_sub( float32, float32 STATUS_PARAM ); |
| 318 | float32 float32_mul( float32, float32 STATUS_PARAM ); |
| 319 | float32 float32_div( float32, float32 STATUS_PARAM ); |
| 320 | float32 float32_rem( float32, float32 STATUS_PARAM ); |
| 321 | float32 float32_sqrt( float32 STATUS_PARAM ); |
David Turner | 2738c26 | 2010-09-09 17:41:26 +0200 | [diff] [blame] | 322 | float32 float32_exp2( float32 STATUS_PARAM ); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 323 | float32 float32_log2( float32 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 324 | int float32_eq( float32, float32 STATUS_PARAM ); |
| 325 | int float32_le( float32, float32 STATUS_PARAM ); |
| 326 | int float32_lt( float32, float32 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 327 | int float32_unordered( float32, float32 STATUS_PARAM ); |
| 328 | int float32_eq_quiet( float32, float32 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 329 | int float32_le_quiet( float32, float32 STATUS_PARAM ); |
| 330 | int float32_lt_quiet( float32, float32 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 331 | int float32_unordered_quiet( float32, float32 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 332 | int float32_compare( float32, float32 STATUS_PARAM ); |
| 333 | int float32_compare_quiet( float32, float32 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 334 | float32 float32_min(float32, float32 STATUS_PARAM); |
| 335 | float32 float32_max(float32, float32 STATUS_PARAM); |
| 336 | int float32_is_quiet_nan( float32 ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 337 | int float32_is_signaling_nan( float32 ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 338 | float32 float32_maybe_silence_nan( float32 ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 339 | float32 float32_scalbn( float32, int STATUS_PARAM ); |
| 340 | |
| 341 | INLINE float32 float32_abs(float32 a) |
| 342 | { |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 343 | /* Note that abs does *not* handle NaN specially, nor does |
| 344 | * it flush denormal inputs to zero. |
| 345 | */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 346 | return make_float32(float32_val(a) & 0x7fffffff); |
| 347 | } |
| 348 | |
| 349 | INLINE float32 float32_chs(float32 a) |
| 350 | { |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 351 | /* Note that chs does *not* handle NaN specially, nor does |
| 352 | * it flush denormal inputs to zero. |
| 353 | */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 354 | return make_float32(float32_val(a) ^ 0x80000000); |
| 355 | } |
| 356 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 357 | INLINE int float32_is_infinity(float32 a) |
| 358 | { |
| 359 | return (float32_val(a) & 0x7fffffff) == 0x7f800000; |
| 360 | } |
| 361 | |
| 362 | INLINE int float32_is_neg(float32 a) |
| 363 | { |
| 364 | return float32_val(a) >> 31; |
| 365 | } |
| 366 | |
| 367 | INLINE int float32_is_zero(float32 a) |
| 368 | { |
| 369 | return (float32_val(a) & 0x7fffffff) == 0; |
| 370 | } |
| 371 | |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 372 | INLINE int float32_is_any_nan(float32 a) |
| 373 | { |
| 374 | return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); |
| 375 | } |
| 376 | |
| 377 | INLINE int float32_is_zero_or_denormal(float32 a) |
| 378 | { |
| 379 | return (float32_val(a) & 0x7f800000) == 0; |
| 380 | } |
| 381 | |
| 382 | INLINE float32 float32_set_sign(float32 a, int sign) |
| 383 | { |
| 384 | return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31)); |
| 385 | } |
| 386 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 387 | #define float32_zero make_float32(0) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 388 | #define float32_one make_float32(0x3f800000) |
David Turner | 2738c26 | 2010-09-09 17:41:26 +0200 | [diff] [blame] | 389 | #define float32_ln2 make_float32(0x3f317218) |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 390 | #define float32_pi make_float32(0x40490fdb) |
| 391 | #define float32_half make_float32(0x3f000000) |
| 392 | #define float32_infinity make_float32(0x7f800000) |
| 393 | |
| 394 | |
| 395 | /*---------------------------------------------------------------------------- |
| 396 | | The pattern for a default generated single-precision NaN. |
| 397 | *----------------------------------------------------------------------------*/ |
| 398 | #if defined(TARGET_SPARC) |
| 399 | #define float32_default_nan make_float32(0x7FFFFFFF) |
| 400 | #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) |
| 401 | #define float32_default_nan make_float32(0x7FC00000) |
| 402 | #elif SNAN_BIT_IS_ONE |
| 403 | #define float32_default_nan make_float32(0x7FBFFFFF) |
| 404 | #else |
| 405 | #define float32_default_nan make_float32(0xFFC00000) |
| 406 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 407 | |
| 408 | /*---------------------------------------------------------------------------- |
| 409 | | Software IEC/IEEE double-precision conversion routines. |
| 410 | *----------------------------------------------------------------------------*/ |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 411 | int16 float64_to_int16_round_to_zero( float64 STATUS_PARAM ); |
| 412 | unsigned int float64_to_uint16_round_to_zero( float64 STATUS_PARAM ); |
| 413 | int32 float64_to_int32( float64 STATUS_PARAM ); |
| 414 | int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM ); |
| 415 | uint32 float64_to_uint32( float64 STATUS_PARAM ); |
| 416 | uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); |
| 417 | int64 float64_to_int64( float64 STATUS_PARAM ); |
| 418 | int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); |
| 419 | uint64 float64_to_uint64 (float64 a STATUS_PARAM); |
| 420 | uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 421 | float32 float64_to_float32( float64 STATUS_PARAM ); |
| 422 | #ifdef FLOATX80 |
| 423 | floatx80 float64_to_floatx80( float64 STATUS_PARAM ); |
| 424 | #endif |
| 425 | #ifdef FLOAT128 |
| 426 | float128 float64_to_float128( float64 STATUS_PARAM ); |
| 427 | #endif |
| 428 | |
| 429 | /*---------------------------------------------------------------------------- |
| 430 | | Software IEC/IEEE double-precision operations. |
| 431 | *----------------------------------------------------------------------------*/ |
| 432 | float64 float64_round_to_int( float64 STATUS_PARAM ); |
| 433 | float64 float64_trunc_to_int( float64 STATUS_PARAM ); |
| 434 | float64 float64_add( float64, float64 STATUS_PARAM ); |
| 435 | float64 float64_sub( float64, float64 STATUS_PARAM ); |
| 436 | float64 float64_mul( float64, float64 STATUS_PARAM ); |
| 437 | float64 float64_div( float64, float64 STATUS_PARAM ); |
| 438 | float64 float64_rem( float64, float64 STATUS_PARAM ); |
| 439 | float64 float64_sqrt( float64 STATUS_PARAM ); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 440 | float64 float64_log2( float64 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 441 | int float64_eq( float64, float64 STATUS_PARAM ); |
| 442 | int float64_le( float64, float64 STATUS_PARAM ); |
| 443 | int float64_lt( float64, float64 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 444 | int float64_unordered( float64, float64 STATUS_PARAM ); |
| 445 | int float64_eq_quiet( float64, float64 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 446 | int float64_le_quiet( float64, float64 STATUS_PARAM ); |
| 447 | int float64_lt_quiet( float64, float64 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 448 | int float64_unordered_quiet( float64, float64 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 449 | int float64_compare( float64, float64 STATUS_PARAM ); |
| 450 | int float64_compare_quiet( float64, float64 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 451 | float64 float64_min(float64, float64 STATUS_PARAM); |
| 452 | float64 float64_max(float64, float64 STATUS_PARAM); |
| 453 | int float64_is_quiet_nan( float64 a ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 454 | int float64_is_signaling_nan( float64 ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 455 | float64 float64_maybe_silence_nan( float64 ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 456 | float64 float64_scalbn( float64, int STATUS_PARAM ); |
| 457 | |
| 458 | INLINE float64 float64_abs(float64 a) |
| 459 | { |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 460 | /* Note that abs does *not* handle NaN specially, nor does |
| 461 | * it flush denormal inputs to zero. |
| 462 | */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 463 | return make_float64(float64_val(a) & 0x7fffffffffffffffLL); |
| 464 | } |
| 465 | |
| 466 | INLINE float64 float64_chs(float64 a) |
| 467 | { |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 468 | /* Note that chs does *not* handle NaN specially, nor does |
| 469 | * it flush denormal inputs to zero. |
| 470 | */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 471 | return make_float64(float64_val(a) ^ 0x8000000000000000LL); |
| 472 | } |
| 473 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 474 | INLINE int float64_is_infinity(float64 a) |
| 475 | { |
| 476 | return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; |
| 477 | } |
| 478 | |
| 479 | INLINE int float64_is_neg(float64 a) |
| 480 | { |
| 481 | return float64_val(a) >> 63; |
| 482 | } |
| 483 | |
| 484 | INLINE int float64_is_zero(float64 a) |
| 485 | { |
| 486 | return (float64_val(a) & 0x7fffffffffffffffLL) == 0; |
| 487 | } |
| 488 | |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 489 | INLINE int float64_is_any_nan(float64 a) |
| 490 | { |
| 491 | return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); |
| 492 | } |
| 493 | |
| 494 | INLINE float64 float64_set_sign(float64 a, int sign) |
| 495 | { |
| 496 | return make_float64((float64_val(a) & 0x7fffffffffffffffULL) |
| 497 | | ((int64_t)sign << 63)); |
| 498 | } |
| 499 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 500 | #define float64_zero make_float64(0) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 501 | #define float64_one make_float64(0x3ff0000000000000LL) |
David Turner | 2738c26 | 2010-09-09 17:41:26 +0200 | [diff] [blame] | 502 | #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 503 | #define float64_pi make_float64(0x400921fb54442d18LL) |
| 504 | #define float64_half make_float64(0x3fe0000000000000LL) |
| 505 | #define float64_infinity make_float64(0x7ff0000000000000LL) |
| 506 | |
| 507 | /*---------------------------------------------------------------------------- |
| 508 | | The pattern for a default generated double-precision NaN. |
| 509 | *----------------------------------------------------------------------------*/ |
| 510 | #if defined(TARGET_SPARC) |
| 511 | #define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF )) |
| 512 | #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) |
| 513 | #define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 )) |
| 514 | #elif SNAN_BIT_IS_ONE |
| 515 | #define float64_default_nan make_float64(LIT64( 0x7FF7FFFFFFFFFFFF )) |
| 516 | #else |
| 517 | #define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 )) |
| 518 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 519 | |
| 520 | #ifdef FLOATX80 |
| 521 | |
| 522 | /*---------------------------------------------------------------------------- |
| 523 | | Software IEC/IEEE extended double-precision conversion routines. |
| 524 | *----------------------------------------------------------------------------*/ |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 525 | int32 floatx80_to_int32( floatx80 STATUS_PARAM ); |
| 526 | int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); |
| 527 | int64 floatx80_to_int64( floatx80 STATUS_PARAM ); |
| 528 | int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 529 | float32 floatx80_to_float32( floatx80 STATUS_PARAM ); |
| 530 | float64 floatx80_to_float64( floatx80 STATUS_PARAM ); |
| 531 | #ifdef FLOAT128 |
| 532 | float128 floatx80_to_float128( floatx80 STATUS_PARAM ); |
| 533 | #endif |
| 534 | |
| 535 | /*---------------------------------------------------------------------------- |
| 536 | | Software IEC/IEEE extended double-precision operations. |
| 537 | *----------------------------------------------------------------------------*/ |
| 538 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); |
| 539 | floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM ); |
| 540 | floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM ); |
| 541 | floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM ); |
| 542 | floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM ); |
| 543 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); |
| 544 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); |
| 545 | int floatx80_eq( floatx80, floatx80 STATUS_PARAM ); |
| 546 | int floatx80_le( floatx80, floatx80 STATUS_PARAM ); |
| 547 | int floatx80_lt( floatx80, floatx80 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 548 | int floatx80_unordered( floatx80, floatx80 STATUS_PARAM ); |
| 549 | int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 550 | int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); |
| 551 | int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 552 | int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM ); |
| 553 | int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); |
| 554 | int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); |
| 555 | int floatx80_is_quiet_nan( floatx80 ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 556 | int floatx80_is_signaling_nan( floatx80 ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 557 | floatx80 floatx80_maybe_silence_nan( floatx80 ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 558 | floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); |
| 559 | |
| 560 | INLINE floatx80 floatx80_abs(floatx80 a) |
| 561 | { |
| 562 | a.high &= 0x7fff; |
| 563 | return a; |
| 564 | } |
| 565 | |
| 566 | INLINE floatx80 floatx80_chs(floatx80 a) |
| 567 | { |
| 568 | a.high ^= 0x8000; |
| 569 | return a; |
| 570 | } |
| 571 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 572 | INLINE int floatx80_is_infinity(floatx80 a) |
| 573 | { |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 574 | return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 575 | } |
| 576 | |
| 577 | INLINE int floatx80_is_neg(floatx80 a) |
| 578 | { |
| 579 | return a.high >> 15; |
| 580 | } |
| 581 | |
| 582 | INLINE int floatx80_is_zero(floatx80 a) |
| 583 | { |
| 584 | return (a.high & 0x7fff) == 0 && a.low == 0; |
| 585 | } |
| 586 | |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 587 | INLINE int floatx80_is_any_nan(floatx80 a) |
| 588 | { |
| 589 | return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); |
| 590 | } |
| 591 | |
| 592 | #define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL) |
| 593 | #define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL) |
| 594 | #define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL) |
| 595 | #define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL) |
| 596 | #define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL) |
| 597 | #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL) |
| 598 | |
| 599 | /*---------------------------------------------------------------------------- |
| 600 | | The pattern for a default generated extended double-precision NaN. The |
| 601 | | `high' and `low' values hold the most- and least-significant bits, |
| 602 | | respectively. |
| 603 | *----------------------------------------------------------------------------*/ |
| 604 | #if SNAN_BIT_IS_ONE |
| 605 | #define floatx80_default_nan_high 0x7FFF |
| 606 | #define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF ) |
| 607 | #else |
| 608 | #define floatx80_default_nan_high 0xFFFF |
| 609 | #define floatx80_default_nan_low LIT64( 0xC000000000000000 ) |
| 610 | #endif |
| 611 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 612 | #endif |
| 613 | |
| 614 | #ifdef FLOAT128 |
| 615 | |
| 616 | /*---------------------------------------------------------------------------- |
| 617 | | Software IEC/IEEE quadruple-precision conversion routines. |
| 618 | *----------------------------------------------------------------------------*/ |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 619 | int32 float128_to_int32( float128 STATUS_PARAM ); |
| 620 | int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM ); |
| 621 | int64 float128_to_int64( float128 STATUS_PARAM ); |
| 622 | int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 623 | float32 float128_to_float32( float128 STATUS_PARAM ); |
| 624 | float64 float128_to_float64( float128 STATUS_PARAM ); |
| 625 | #ifdef FLOATX80 |
| 626 | floatx80 float128_to_floatx80( float128 STATUS_PARAM ); |
| 627 | #endif |
| 628 | |
| 629 | /*---------------------------------------------------------------------------- |
| 630 | | Software IEC/IEEE quadruple-precision operations. |
| 631 | *----------------------------------------------------------------------------*/ |
| 632 | float128 float128_round_to_int( float128 STATUS_PARAM ); |
| 633 | float128 float128_add( float128, float128 STATUS_PARAM ); |
| 634 | float128 float128_sub( float128, float128 STATUS_PARAM ); |
| 635 | float128 float128_mul( float128, float128 STATUS_PARAM ); |
| 636 | float128 float128_div( float128, float128 STATUS_PARAM ); |
| 637 | float128 float128_rem( float128, float128 STATUS_PARAM ); |
| 638 | float128 float128_sqrt( float128 STATUS_PARAM ); |
| 639 | int float128_eq( float128, float128 STATUS_PARAM ); |
| 640 | int float128_le( float128, float128 STATUS_PARAM ); |
| 641 | int float128_lt( float128, float128 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 642 | int float128_unordered( float128, float128 STATUS_PARAM ); |
| 643 | int float128_eq_quiet( float128, float128 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 644 | int float128_le_quiet( float128, float128 STATUS_PARAM ); |
| 645 | int float128_lt_quiet( float128, float128 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 646 | int float128_unordered_quiet( float128, float128 STATUS_PARAM ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 647 | int float128_compare( float128, float128 STATUS_PARAM ); |
| 648 | int float128_compare_quiet( float128, float128 STATUS_PARAM ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 649 | int float128_is_quiet_nan( float128 ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 650 | int float128_is_signaling_nan( float128 ); |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 651 | float128 float128_maybe_silence_nan( float128 ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 652 | float128 float128_scalbn( float128, int STATUS_PARAM ); |
| 653 | |
| 654 | INLINE float128 float128_abs(float128 a) |
| 655 | { |
| 656 | a.high &= 0x7fffffffffffffffLL; |
| 657 | return a; |
| 658 | } |
| 659 | |
| 660 | INLINE float128 float128_chs(float128 a) |
| 661 | { |
| 662 | a.high ^= 0x8000000000000000LL; |
| 663 | return a; |
| 664 | } |
| 665 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 666 | INLINE int float128_is_infinity(float128 a) |
| 667 | { |
| 668 | return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; |
| 669 | } |
| 670 | |
| 671 | INLINE int float128_is_neg(float128 a) |
| 672 | { |
| 673 | return a.high >> 63; |
| 674 | } |
| 675 | |
| 676 | INLINE int float128_is_zero(float128 a) |
| 677 | { |
| 678 | return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; |
| 679 | } |
| 680 | |
David 'Digit' Turner | bfec547 | 2011-05-10 12:59:13 +0200 | [diff] [blame] | 681 | INLINE int float128_is_any_nan(float128 a) |
| 682 | { |
| 683 | return ((a.high >> 48) & 0x7fff) == 0x7fff && |
| 684 | ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); |
| 685 | } |
| 686 | |
| 687 | /*---------------------------------------------------------------------------- |
| 688 | | The pattern for a default generated quadruple-precision NaN. The `high' and |
| 689 | | `low' values hold the most- and least-significant bits, respectively. |
| 690 | *----------------------------------------------------------------------------*/ |
| 691 | #if SNAN_BIT_IS_ONE |
| 692 | #define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF ) |
| 693 | #define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF ) |
| 694 | #else |
| 695 | #define float128_default_nan_high LIT64( 0xFFFF800000000000 ) |
| 696 | #define float128_default_nan_low LIT64( 0x0000000000000000 ) |
| 697 | #endif |
| 698 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 699 | #endif |
| 700 | |
| 701 | #else /* CONFIG_SOFTFLOAT */ |
| 702 | |
| 703 | #include "softfloat-native.h" |
| 704 | |
| 705 | #endif /* !CONFIG_SOFTFLOAT */ |
| 706 | |
| 707 | #endif /* !SOFTFLOAT_H */ |