| 1 | /*============================================================================
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| 2 |
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| 3 | This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
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| 4 | Package, Release 2b.
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| 5 |
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| 6 | Written by John R. Hauser. This work was made possible in part by the
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| 7 | International Computer Science Institute, located at Suite 600, 1947 Center
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| 8 | Street, Berkeley, California 94704. Funding was partially provided by the
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| 9 | National Science Foundation under grant MIP-9311980. The original version
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| 10 | of this code was written as part of a project to build a fixed-point vector
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| 11 | processor in collaboration with the University of California at Berkeley,
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| 12 | overseen by Profs. Nelson Morgan and John Wawrzynek. More information
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| 13 | is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
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| 14 | arithmetic/SoftFloat.html'.
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| 15 |
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| 16 | THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort has
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| 17 | been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
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| 18 | RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
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| 19 | AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
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| 20 | COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
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| 21 | EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
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| 22 | INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
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| 23 | OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
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| 24 |
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| 25 | Derivative works are acceptable, even for commercial purposes, so long as
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| 26 | (1) the source code for the derivative work includes prominent notice that
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| 27 | the work is derivative, and (2) the source code includes prominent notice with
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| 28 | these four paragraphs for those parts of this code that are retained.
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| 29 |
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| 30 | =============================================================================*/
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| 31 |
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| 32 | #ifndef SOFTFLOAT_H
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| 33 | #define SOFTFLOAT_H
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| 34 |
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| 35 | #ifdef VBOX
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| 36 | #include <VBox/types.h>
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| 37 | #endif
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| 38 |
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| 39 | #if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH)
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| 40 | #include <sunmath.h>
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| 41 | #endif
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| 42 |
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| 43 | #include <inttypes.h>
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| 44 | #include "config.h"
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| 45 |
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| 46 | /*----------------------------------------------------------------------------
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| 47 | | Each of the following `typedef's defines the most convenient type that holds
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| 48 | | integers of at least as many bits as specified. For example, `uint8' should
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| 49 | | be the most convenient type that can hold unsigned integers of as many as
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| 50 | | 8 bits. The `flag' type must be able to hold either a 0 or 1. For most
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| 51 | | implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
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| 52 | | to the same as `int'.
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| 53 | *----------------------------------------------------------------------------*/
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| 54 | typedef uint8_t flag;
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| 55 | typedef uint8_t uint8;
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| 56 | typedef int8_t int8;
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| 57 | #ifndef _AIX
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| 58 | typedef int uint16;
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| 59 | typedef int int16;
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| 60 | #endif
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| 61 | typedef unsigned int uint32;
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| 62 | typedef signed int int32;
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| 63 | typedef uint64_t uint64;
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| 64 | typedef int64_t int64;
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| 65 |
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| 66 | /*----------------------------------------------------------------------------
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| 67 | | Each of the following `typedef's defines a type that holds integers
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| 68 | | of _exactly_ the number of bits specified. For instance, for most
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| 69 | | implementation of C, `bits16' and `sbits16' should be `typedef'ed to
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| 70 | | `unsigned short int' and `signed short int' (or `short int'), respectively.
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| 71 | *----------------------------------------------------------------------------*/
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| 72 | typedef uint8_t bits8;
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| 73 | typedef int8_t sbits8;
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| 74 | typedef uint16_t bits16;
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| 75 | typedef int16_t sbits16;
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| 76 | typedef uint32_t bits32;
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| 77 | typedef int32_t sbits32;
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| 78 | typedef uint64_t bits64;
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| 79 | typedef int64_t sbits64;
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| 80 |
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| 81 | #define LIT64( a ) a##LL
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| 82 | #define INLINE static inline
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| 83 |
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| 84 | /*----------------------------------------------------------------------------
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| 85 | | The macro `FLOATX80' must be defined to enable the extended double-precision
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| 86 | | floating-point format `floatx80'. If this macro is not defined, the
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| 87 | | `floatx80' type will not be defined, and none of the functions that either
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| 88 | | input or output the `floatx80' type will be defined. The same applies to
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| 89 | | the `FLOAT128' macro and the quadruple-precision format `float128'.
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| 90 | *----------------------------------------------------------------------------*/
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| 91 | #ifdef CONFIG_SOFTFLOAT
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| 92 | /* bit exact soft float support */
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| 93 | #define FLOATX80
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| 94 | #define FLOAT128
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| 95 | #else
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| 96 | /* native float support */
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| 97 | #if (defined(__i386__) || defined(__x86_64__)) && (!defined(CONFIG_BSD) || defined(VBOX)) /** @todo VBOX: not correct on windows */
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| 98 | #define FLOATX80
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| 99 | #endif
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| 100 | #endif /* !CONFIG_SOFTFLOAT */
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| 101 |
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| 102 | #if defined(VBOX) && (!defined(FLOATX80) || defined(CONFIG_SOFTFLOAT))
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| 103 | # error misconfigured
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| 104 | #endif
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| 105 |
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| 106 | #define STATUS_PARAM , float_status *status
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| 107 | #define STATUS(field) status->field
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| 108 | #define STATUS_VAR , status
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| 109 |
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| 110 | /*----------------------------------------------------------------------------
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| 111 | | Software IEC/IEEE floating-point ordering relations
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| 112 | *----------------------------------------------------------------------------*/
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| 113 | enum {
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| 114 | float_relation_less = -1,
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| 115 | float_relation_equal = 0,
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| 116 | float_relation_greater = 1,
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| 117 | float_relation_unordered = 2
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| 118 | };
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| 119 |
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| 120 | #ifdef CONFIG_SOFTFLOAT
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| 121 | /*----------------------------------------------------------------------------
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| 122 | | Software IEC/IEEE floating-point types.
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| 123 | *----------------------------------------------------------------------------*/
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| 124 | /* Use structures for soft-float types. This prevents accidentally mixing
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| 125 | them with native int/float types. A sufficiently clever compiler and
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| 126 | sane ABI should be able to see though these structs. However
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| 127 | x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */
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| 128 | //#define USE_SOFTFLOAT_STRUCT_TYPES
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| 129 | #ifdef USE_SOFTFLOAT_STRUCT_TYPES
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| 130 | typedef struct {
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| 131 | uint32_t v;
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| 132 | } float32;
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| 133 | /* The cast ensures an error if the wrong type is passed. */
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| 134 | #define float32_val(x) (((float32)(x)).v)
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| 135 | #define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; })
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| 136 | typedef struct {
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| 137 | uint64_t v;
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| 138 | } float64;
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| 139 | #define float64_val(x) (((float64)(x)).v)
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| 140 | #define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; })
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| 141 | #else
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| 142 | typedef uint32_t float32;
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| 143 | typedef uint64_t float64;
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| 144 | #define float32_val(x) (x)
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| 145 | #define float64_val(x) (x)
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| 146 | #define make_float32(x) (x)
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| 147 | #define make_float64(x) (x)
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| 148 | #endif
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| 149 | #ifdef FLOATX80
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| 150 | typedef struct {
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| 151 | uint64_t low;
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| 152 | uint16_t high;
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| 153 | } floatx80;
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| 154 | #endif
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| 155 | #ifdef FLOAT128
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| 156 | typedef struct {
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| 157 | #ifdef HOST_WORDS_BIGENDIAN
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| 158 | uint64_t high, low;
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| 159 | #else
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| 160 | uint64_t low, high;
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| 161 | #endif
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| 162 | } float128;
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| 163 | #endif
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| 164 |
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| 165 | /*----------------------------------------------------------------------------
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| 166 | | Software IEC/IEEE floating-point underflow tininess-detection mode.
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| 167 | *----------------------------------------------------------------------------*/
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| 168 | enum {
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| 169 | float_tininess_after_rounding = 0,
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| 170 | float_tininess_before_rounding = 1
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| 171 | };
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| 172 |
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| 173 | /*----------------------------------------------------------------------------
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| 174 | | Software IEC/IEEE floating-point rounding mode.
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| 175 | *----------------------------------------------------------------------------*/
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| 176 | enum {
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| 177 | float_round_nearest_even = 0,
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| 178 | float_round_down = 1,
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| 179 | float_round_up = 2,
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| 180 | float_round_to_zero = 3
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| 181 | };
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| 182 |
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| 183 | /*----------------------------------------------------------------------------
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| 184 | | Software IEC/IEEE floating-point exception flags.
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| 185 | *----------------------------------------------------------------------------*/
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| 186 | enum {
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| 187 | float_flag_invalid = 1,
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| 188 | float_flag_divbyzero = 4,
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| 189 | float_flag_overflow = 8,
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| 190 | float_flag_underflow = 16,
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| 191 | float_flag_inexact = 32
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| 192 | };
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| 193 |
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| 194 | typedef struct float_status {
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| 195 | signed char float_detect_tininess;
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| 196 | signed char float_rounding_mode;
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| 197 | signed char float_exception_flags;
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| 198 | #ifdef FLOATX80
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| 199 | signed char floatx80_rounding_precision;
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| 200 | #endif
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| 201 | flag flush_to_zero;
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| 202 | flag default_nan_mode;
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| 203 | } float_status;
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| 204 |
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| 205 | void set_float_rounding_mode(int val STATUS_PARAM);
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| 206 | void set_float_exception_flags(int val STATUS_PARAM);
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| 207 | INLINE void set_flush_to_zero(flag val STATUS_PARAM)
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| 208 | {
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| 209 | STATUS(flush_to_zero) = val;
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| 210 | }
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| 211 | INLINE void set_default_nan_mode(flag val STATUS_PARAM)
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| 212 | {
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| 213 | STATUS(default_nan_mode) = val;
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| 214 | }
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| 215 | INLINE int get_float_exception_flags(float_status *status)
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| 216 | {
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| 217 | return STATUS(float_exception_flags);
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| 218 | }
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| 219 | #ifdef FLOATX80
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| 220 | void set_floatx80_rounding_precision(int val STATUS_PARAM);
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| 221 | #endif
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| 222 |
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| 223 | /*----------------------------------------------------------------------------
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| 224 | | Routine to raise any or all of the software IEC/IEEE floating-point
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| 225 | | exception flags.
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| 226 | *----------------------------------------------------------------------------*/
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| 227 | void float_raise( int8 flags STATUS_PARAM);
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| 228 |
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| 229 | /*----------------------------------------------------------------------------
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| 230 | | Software IEC/IEEE integer-to-floating-point conversion routines.
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| 231 | *----------------------------------------------------------------------------*/
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| 232 | float32 int32_to_float32( int STATUS_PARAM );
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| 233 | float64 int32_to_float64( int STATUS_PARAM );
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| 234 | float32 uint32_to_float32( unsigned int STATUS_PARAM );
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| 235 | float64 uint32_to_float64( unsigned int STATUS_PARAM );
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| 236 | #ifdef FLOATX80
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| 237 | floatx80 int32_to_floatx80( int STATUS_PARAM );
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| 238 | #endif
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| 239 | #ifdef FLOAT128
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| 240 | float128 int32_to_float128( int STATUS_PARAM );
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| 241 | #endif
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| 242 | float32 int64_to_float32( int64_t STATUS_PARAM );
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| 243 | float32 uint64_to_float32( uint64_t STATUS_PARAM );
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| 244 | float64 int64_to_float64( int64_t STATUS_PARAM );
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| 245 | float64 uint64_to_float64( uint64_t STATUS_PARAM );
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| 246 | #ifdef FLOATX80
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| 247 | floatx80 int64_to_floatx80( int64_t STATUS_PARAM );
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| 248 | #endif
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| 249 | #ifdef FLOAT128
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| 250 | float128 int64_to_float128( int64_t STATUS_PARAM );
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| 251 | #endif
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| 252 |
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| 253 | /*----------------------------------------------------------------------------
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| 254 | | Software half-precision conversion routines.
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| 255 | *----------------------------------------------------------------------------*/
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| 256 | bits16 float32_to_float16( float32, flag STATUS_PARAM );
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| 257 | float32 float16_to_float32( bits16, flag STATUS_PARAM );
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| 258 |
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| 259 | /*----------------------------------------------------------------------------
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| 260 | | Software IEC/IEEE single-precision conversion routines.
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| 261 | *----------------------------------------------------------------------------*/
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| 262 | int float32_to_int32( float32 STATUS_PARAM );
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| 263 | int float32_to_int32_round_to_zero( float32 STATUS_PARAM );
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| 264 | unsigned int float32_to_uint32( float32 STATUS_PARAM );
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| 265 | unsigned int float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
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| 266 | int64_t float32_to_int64( float32 STATUS_PARAM );
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| 267 | int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM );
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| 268 | float64 float32_to_float64( float32 STATUS_PARAM );
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| 269 | #ifdef FLOATX80
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| 270 | floatx80 float32_to_floatx80( float32 STATUS_PARAM );
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| 271 | #endif
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| 272 | #ifdef FLOAT128
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| 273 | float128 float32_to_float128( float32 STATUS_PARAM );
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| 274 | #endif
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| 275 |
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| 276 | /*----------------------------------------------------------------------------
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| 277 | | Software IEC/IEEE single-precision operations.
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| 278 | *----------------------------------------------------------------------------*/
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| 279 | float32 float32_round_to_int( float32 STATUS_PARAM );
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| 280 | float32 float32_add( float32, float32 STATUS_PARAM );
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| 281 | float32 float32_sub( float32, float32 STATUS_PARAM );
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| 282 | float32 float32_mul( float32, float32 STATUS_PARAM );
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| 283 | float32 float32_div( float32, float32 STATUS_PARAM );
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| 284 | float32 float32_rem( float32, float32 STATUS_PARAM );
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| 285 | float32 float32_sqrt( float32 STATUS_PARAM );
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| 286 | float32 float32_exp2( float32 STATUS_PARAM );
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| 287 | float32 float32_log2( float32 STATUS_PARAM );
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| 288 | int float32_eq( float32, float32 STATUS_PARAM );
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| 289 | int float32_le( float32, float32 STATUS_PARAM );
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| 290 | int float32_lt( float32, float32 STATUS_PARAM );
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| 291 | int float32_eq_signaling( float32, float32 STATUS_PARAM );
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| 292 | int float32_le_quiet( float32, float32 STATUS_PARAM );
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| 293 | int float32_lt_quiet( float32, float32 STATUS_PARAM );
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| 294 | int float32_compare( float32, float32 STATUS_PARAM );
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| 295 | int float32_compare_quiet( float32, float32 STATUS_PARAM );
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| 296 | int float32_is_nan( float32 );
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| 297 | int float32_is_signaling_nan( float32 );
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| 298 | float32 float32_scalbn( float32, int STATUS_PARAM );
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| 299 |
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| 300 | INLINE float32 float32_abs(float32 a)
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| 301 | {
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| 302 | return make_float32(float32_val(a) & 0x7fffffff);
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| 303 | }
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| 304 |
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| 305 | INLINE float32 float32_chs(float32 a)
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| 306 | {
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| 307 | return make_float32(float32_val(a) ^ 0x80000000);
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| 308 | }
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| 309 |
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| 310 | INLINE int float32_is_infinity(float32 a)
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| 311 | {
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| 312 | return (float32_val(a) & 0x7fffffff) == 0x7f800000;
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| 313 | }
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| 314 |
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| 315 | INLINE int float32_is_neg(float32 a)
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| 316 | {
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| 317 | return float32_val(a) >> 31;
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| 318 | }
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| 319 |
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| 320 | INLINE int float32_is_zero(float32 a)
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| 321 | {
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| 322 | return (float32_val(a) & 0x7fffffff) == 0;
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| 323 | }
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| 324 |
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| 325 | #define float32_zero make_float32(0)
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| 326 | #define float32_one make_float32(0x3f800000)
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| 327 | #define float32_ln2 make_float32(0x3f317218)
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| 328 |
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| 329 | /*----------------------------------------------------------------------------
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| 330 | | Software IEC/IEEE double-precision conversion routines.
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| 331 | *----------------------------------------------------------------------------*/
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| 332 | int float64_to_int32( float64 STATUS_PARAM );
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| 333 | int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
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| 334 | unsigned int float64_to_uint32( float64 STATUS_PARAM );
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| 335 | unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
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| 336 | int64_t float64_to_int64( float64 STATUS_PARAM );
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| 337 | int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
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| 338 | uint64_t float64_to_uint64 (float64 a STATUS_PARAM);
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| 339 | uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM);
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| 340 | float32 float64_to_float32( float64 STATUS_PARAM );
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| 341 | #ifdef FLOATX80
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| 342 | floatx80 float64_to_floatx80( float64 STATUS_PARAM );
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| 343 | #endif
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| 344 | #ifdef FLOAT128
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| 345 | float128 float64_to_float128( float64 STATUS_PARAM );
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| 346 | #endif
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| 347 |
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| 348 | /*----------------------------------------------------------------------------
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| 349 | | Software IEC/IEEE double-precision operations.
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| 350 | *----------------------------------------------------------------------------*/
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| 351 | float64 float64_round_to_int( float64 STATUS_PARAM );
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| 352 | float64 float64_trunc_to_int( float64 STATUS_PARAM );
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| 353 | float64 float64_add( float64, float64 STATUS_PARAM );
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| 354 | float64 float64_sub( float64, float64 STATUS_PARAM );
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| 355 | float64 float64_mul( float64, float64 STATUS_PARAM );
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| 356 | float64 float64_div( float64, float64 STATUS_PARAM );
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| 357 | float64 float64_rem( float64, float64 STATUS_PARAM );
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| 358 | float64 float64_sqrt( float64 STATUS_PARAM );
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| 359 | float64 float64_log2( float64 STATUS_PARAM );
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| 360 | int float64_eq( float64, float64 STATUS_PARAM );
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| 361 | int float64_le( float64, float64 STATUS_PARAM );
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| 362 | int float64_lt( float64, float64 STATUS_PARAM );
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| 363 | int float64_eq_signaling( float64, float64 STATUS_PARAM );
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| 364 | int float64_le_quiet( float64, float64 STATUS_PARAM );
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| 365 | int float64_lt_quiet( float64, float64 STATUS_PARAM );
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| 366 | int float64_compare( float64, float64 STATUS_PARAM );
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| 367 | int float64_compare_quiet( float64, float64 STATUS_PARAM );
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| 368 | int float64_is_nan( float64 a );
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| 369 | int float64_is_signaling_nan( float64 );
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| 370 | float64 float64_scalbn( float64, int STATUS_PARAM );
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| 371 |
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| 372 | INLINE float64 float64_abs(float64 a)
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| 373 | {
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| 374 | return make_float64(float64_val(a) & 0x7fffffffffffffffLL);
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| 375 | }
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| 376 |
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| 377 | INLINE float64 float64_chs(float64 a)
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| 378 | {
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| 379 | return make_float64(float64_val(a) ^ 0x8000000000000000LL);
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| 380 | }
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| 381 |
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| 382 | INLINE int float64_is_infinity(float64 a)
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| 383 | {
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| 384 | return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL;
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| 385 | }
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| 386 |
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| 387 | INLINE int float64_is_neg(float64 a)
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| 388 | {
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| 389 | return float64_val(a) >> 63;
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| 390 | }
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| 391 |
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| 392 | INLINE int float64_is_zero(float64 a)
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| 393 | {
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| 394 | return (float64_val(a) & 0x7fffffffffffffffLL) == 0;
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| 395 | }
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| 396 |
|
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| 397 | #define float64_zero make_float64(0)
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| 398 | #define float64_one make_float64(0x3ff0000000000000LL)
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| 399 | #define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
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| 400 |
|
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| 401 | #ifdef FLOATX80
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|---|
| 402 |
|
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| 403 | /*----------------------------------------------------------------------------
|
|---|
| 404 | | Software IEC/IEEE extended double-precision conversion routines.
|
|---|
| 405 | *----------------------------------------------------------------------------*/
|
|---|
| 406 | int floatx80_to_int32( floatx80 STATUS_PARAM );
|
|---|
| 407 | int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
|
|---|
| 408 | int64_t floatx80_to_int64( floatx80 STATUS_PARAM );
|
|---|
| 409 | int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM );
|
|---|
| 410 | float32 floatx80_to_float32( floatx80 STATUS_PARAM );
|
|---|
| 411 | float64 floatx80_to_float64( floatx80 STATUS_PARAM );
|
|---|
| 412 | #ifdef FLOAT128
|
|---|
| 413 | float128 floatx80_to_float128( floatx80 STATUS_PARAM );
|
|---|
| 414 | #endif
|
|---|
| 415 |
|
|---|
| 416 | /*----------------------------------------------------------------------------
|
|---|
| 417 | | Software IEC/IEEE extended double-precision operations.
|
|---|
| 418 | *----------------------------------------------------------------------------*/
|
|---|
| 419 | floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
|
|---|
| 420 | floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 421 | floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 422 | floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 423 | floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 424 | floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 425 | floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
|
|---|
| 426 | int floatx80_eq( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 427 | int floatx80_le( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 428 | int floatx80_lt( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 429 | int floatx80_eq_signaling( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 430 | int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 431 | int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM );
|
|---|
| 432 | int floatx80_is_nan( floatx80 );
|
|---|
| 433 | int floatx80_is_signaling_nan( floatx80 );
|
|---|
| 434 | floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM );
|
|---|
| 435 |
|
|---|
| 436 | INLINE floatx80 floatx80_abs(floatx80 a)
|
|---|
| 437 | {
|
|---|
| 438 | a.high &= 0x7fff;
|
|---|
| 439 | return a;
|
|---|
| 440 | }
|
|---|
| 441 |
|
|---|
| 442 | INLINE floatx80 floatx80_chs(floatx80 a)
|
|---|
| 443 | {
|
|---|
| 444 | a.high ^= 0x8000;
|
|---|
| 445 | return a;
|
|---|
| 446 | }
|
|---|
| 447 |
|
|---|
| 448 | INLINE int floatx80_is_infinity(floatx80 a)
|
|---|
| 449 | {
|
|---|
| 450 | return (a.high & 0x7fff) == 0x7fff && a.low == 0;
|
|---|
| 451 | }
|
|---|
| 452 |
|
|---|
| 453 | INLINE int floatx80_is_neg(floatx80 a)
|
|---|
| 454 | {
|
|---|
| 455 | return a.high >> 15;
|
|---|
| 456 | }
|
|---|
| 457 |
|
|---|
| 458 | INLINE int floatx80_is_zero(floatx80 a)
|
|---|
| 459 | {
|
|---|
| 460 | return (a.high & 0x7fff) == 0 && a.low == 0;
|
|---|
| 461 | }
|
|---|
| 462 |
|
|---|
| 463 | #endif
|
|---|
| 464 |
|
|---|
| 465 | #ifdef FLOAT128
|
|---|
| 466 |
|
|---|
| 467 | /*----------------------------------------------------------------------------
|
|---|
| 468 | | Software IEC/IEEE quadruple-precision conversion routines.
|
|---|
| 469 | *----------------------------------------------------------------------------*/
|
|---|
| 470 | int float128_to_int32( float128 STATUS_PARAM );
|
|---|
| 471 | int float128_to_int32_round_to_zero( float128 STATUS_PARAM );
|
|---|
| 472 | int64_t float128_to_int64( float128 STATUS_PARAM );
|
|---|
| 473 | int64_t float128_to_int64_round_to_zero( float128 STATUS_PARAM );
|
|---|
| 474 | float32 float128_to_float32( float128 STATUS_PARAM );
|
|---|
| 475 | float64 float128_to_float64( float128 STATUS_PARAM );
|
|---|
| 476 | #ifdef FLOATX80
|
|---|
| 477 | floatx80 float128_to_floatx80( float128 STATUS_PARAM );
|
|---|
| 478 | #endif
|
|---|
| 479 |
|
|---|
| 480 | /*----------------------------------------------------------------------------
|
|---|
| 481 | | Software IEC/IEEE quadruple-precision operations.
|
|---|
| 482 | *----------------------------------------------------------------------------*/
|
|---|
| 483 | float128 float128_round_to_int( float128 STATUS_PARAM );
|
|---|
| 484 | float128 float128_add( float128, float128 STATUS_PARAM );
|
|---|
| 485 | float128 float128_sub( float128, float128 STATUS_PARAM );
|
|---|
| 486 | float128 float128_mul( float128, float128 STATUS_PARAM );
|
|---|
| 487 | float128 float128_div( float128, float128 STATUS_PARAM );
|
|---|
| 488 | float128 float128_rem( float128, float128 STATUS_PARAM );
|
|---|
| 489 | float128 float128_sqrt( float128 STATUS_PARAM );
|
|---|
| 490 | int float128_eq( float128, float128 STATUS_PARAM );
|
|---|
| 491 | int float128_le( float128, float128 STATUS_PARAM );
|
|---|
| 492 | int float128_lt( float128, float128 STATUS_PARAM );
|
|---|
| 493 | int float128_eq_signaling( float128, float128 STATUS_PARAM );
|
|---|
| 494 | int float128_le_quiet( float128, float128 STATUS_PARAM );
|
|---|
| 495 | int float128_lt_quiet( float128, float128 STATUS_PARAM );
|
|---|
| 496 | int float128_compare( float128, float128 STATUS_PARAM );
|
|---|
| 497 | int float128_compare_quiet( float128, float128 STATUS_PARAM );
|
|---|
| 498 | int float128_is_nan( float128 );
|
|---|
| 499 | int float128_is_signaling_nan( float128 );
|
|---|
| 500 | float128 float128_scalbn( float128, int STATUS_PARAM );
|
|---|
| 501 |
|
|---|
| 502 | INLINE float128 float128_abs(float128 a)
|
|---|
| 503 | {
|
|---|
| 504 | a.high &= 0x7fffffffffffffffLL;
|
|---|
| 505 | return a;
|
|---|
| 506 | }
|
|---|
| 507 |
|
|---|
| 508 | INLINE float128 float128_chs(float128 a)
|
|---|
| 509 | {
|
|---|
| 510 | a.high ^= 0x8000000000000000LL;
|
|---|
| 511 | return a;
|
|---|
| 512 | }
|
|---|
| 513 |
|
|---|
| 514 | INLINE int float128_is_infinity(float128 a)
|
|---|
| 515 | {
|
|---|
| 516 | return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0;
|
|---|
| 517 | }
|
|---|
| 518 |
|
|---|
| 519 | INLINE int float128_is_neg(float128 a)
|
|---|
| 520 | {
|
|---|
| 521 | return a.high >> 63;
|
|---|
| 522 | }
|
|---|
| 523 |
|
|---|
| 524 | INLINE int float128_is_zero(float128 a)
|
|---|
| 525 | {
|
|---|
| 526 | return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0;
|
|---|
| 527 | }
|
|---|
| 528 |
|
|---|
| 529 | #endif
|
|---|
| 530 |
|
|---|
| 531 | #else /* CONFIG_SOFTFLOAT */
|
|---|
| 532 |
|
|---|
| 533 | #include "softfloat-native.h"
|
|---|
| 534 |
|
|---|
| 535 | #endif /* !CONFIG_SOFTFLOAT */
|
|---|
| 536 |
|
|---|
| 537 | #endif /* !SOFTFLOAT_H */
|
|---|
