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| 2 | /*============================================================================
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| 3 |
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| 4 | This C header file is part of the SoftFloat IEEE Floating-Point Arithmetic
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| 5 | Package, Release 3e, by John R. Hauser.
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| 6 |
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| 7 | Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017 The Regents of the
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| 8 | University of California. All rights reserved.
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| 9 |
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| 10 | Redistribution and use in source and binary forms, with or without
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| 11 | modification, are permitted provided that the following conditions are met:
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| 12 |
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| 13 | 1. Redistributions of source code must retain the above copyright notice,
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| 14 | this list of conditions, and the following disclaimer.
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| 15 |
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| 16 | 2. Redistributions in binary form must reproduce the above copyright notice,
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| 17 | this list of conditions, and the following disclaimer in the documentation
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| 18 | and/or other materials provided with the distribution.
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| 19 |
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| 20 | 3. Neither the name of the University nor the names of its contributors may
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| 21 | be used to endorse or promote products derived from this software without
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| 22 | specific prior written permission.
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| 23 |
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| 24 | THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
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| 25 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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| 26 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
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| 27 | DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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| 28 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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| 29 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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| 30 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 31 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 32 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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| 33 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 34 |
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| 35 | =============================================================================*/
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| 36 |
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| 37 |
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| 38 | /*============================================================================
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| 39 | | Note: If SoftFloat is made available as a general library for programs to
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| 40 | | use, it is strongly recommended that a platform-specific version of this
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| 41 | | header, "softfloat.h", be created that folds in "softfloat_types.h" and that
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| 42 | | eliminates all dependencies on compile-time macros.
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| 43 | *============================================================================*/
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| 44 |
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| 45 |
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| 46 | #ifndef softfloat_h
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| 47 | #define softfloat_h 1
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| 48 |
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| 49 | #include <stdbool.h>
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| 50 | #include <stdint.h>
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| 51 | #include "softfloat_types.h"
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| 52 |
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| 53 | #ifndef THREAD_LOCAL
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| 54 | #define THREAD_LOCAL
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| 55 | #endif
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| 56 |
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| 57 | /*----------------------------------------------------------------------------
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| 58 | | Software floating-point underflow tininess-detection mode.
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| 59 | *----------------------------------------------------------------------------*/
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| 60 | extern THREAD_LOCAL uint_fast8_t softfloat_detectTininess;
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| 61 | enum {
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| 62 | softfloat_tininess_beforeRounding = 0,
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| 63 | softfloat_tininess_afterRounding = 1
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| 64 | };
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| 65 |
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| 66 | /*----------------------------------------------------------------------------
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| 67 | | Software floating-point rounding mode. (Mode "odd" is supported only if
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| 68 | | SoftFloat is compiled with macro 'SOFTFLOAT_ROUND_ODD' defined.)
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| 69 | *----------------------------------------------------------------------------*/
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| 70 | extern THREAD_LOCAL uint_fast8_t softfloat_roundingMode;
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| 71 | enum {
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| 72 | softfloat_round_near_even = 0,
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| 73 | softfloat_round_minMag = 1,
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| 74 | softfloat_round_min = 2,
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| 75 | softfloat_round_max = 3,
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| 76 | softfloat_round_near_maxMag = 4,
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| 77 | softfloat_round_odd = 6
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| 78 | };
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| 79 |
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| 80 | /*----------------------------------------------------------------------------
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| 81 | | Software floating-point exception flags.
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| 82 | *----------------------------------------------------------------------------*/
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| 83 | extern THREAD_LOCAL uint_fast8_t softfloat_exceptionFlags;
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| 84 | enum {
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| 85 | softfloat_flag_inexact = 1,
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| 86 | softfloat_flag_underflow = 2,
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| 87 | softfloat_flag_overflow = 4,
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| 88 | softfloat_flag_infinite = 8,
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| 89 | softfloat_flag_invalid = 16
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| 90 | };
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| 91 |
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| 92 | /*----------------------------------------------------------------------------
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| 93 | | Routine to raise any or all of the software floating-point exception flags.
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| 94 | *----------------------------------------------------------------------------*/
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| 95 | void softfloat_raiseFlags( uint_fast8_t );
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| 96 |
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| 97 | /*----------------------------------------------------------------------------
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| 98 | | Integer-to-floating-point conversion routines.
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| 99 | *----------------------------------------------------------------------------*/
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| 100 | float16_t ui32_to_f16( uint32_t );
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| 101 | float32_t ui32_to_f32( uint32_t );
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| 102 | float64_t ui32_to_f64( uint32_t );
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| 103 | #ifdef SOFTFLOAT_FAST_INT64
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| 104 | extFloat80_t ui32_to_extF80( uint32_t );
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| 105 | float128_t ui32_to_f128( uint32_t );
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| 106 | #endif
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| 107 | void ui32_to_extF80M( uint32_t, extFloat80_t * );
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| 108 | void ui32_to_f128M( uint32_t, float128_t * );
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| 109 | float16_t ui64_to_f16( uint64_t );
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| 110 | float32_t ui64_to_f32( uint64_t );
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| 111 | float64_t ui64_to_f64( uint64_t );
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| 112 | #ifdef SOFTFLOAT_FAST_INT64
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| 113 | extFloat80_t ui64_to_extF80( uint64_t );
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| 114 | float128_t ui64_to_f128( uint64_t );
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| 115 | #endif
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| 116 | void ui64_to_extF80M( uint64_t, extFloat80_t * );
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| 117 | void ui64_to_f128M( uint64_t, float128_t * );
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| 118 | float16_t i32_to_f16( int32_t );
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| 119 | float32_t i32_to_f32( int32_t );
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| 120 | float64_t i32_to_f64( int32_t );
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| 121 | #ifdef SOFTFLOAT_FAST_INT64
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| 122 | extFloat80_t i32_to_extF80( int32_t );
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| 123 | float128_t i32_to_f128( int32_t );
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| 124 | #endif
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| 125 | void i32_to_extF80M( int32_t, extFloat80_t * );
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| 126 | void i32_to_f128M( int32_t, float128_t * );
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| 127 | float16_t i64_to_f16( int64_t );
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| 128 | float32_t i64_to_f32( int64_t );
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| 129 | float64_t i64_to_f64( int64_t );
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| 130 | #ifdef SOFTFLOAT_FAST_INT64
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| 131 | extFloat80_t i64_to_extF80( int64_t );
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| 132 | float128_t i64_to_f128( int64_t );
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| 133 | #endif
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| 134 | void i64_to_extF80M( int64_t, extFloat80_t * );
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| 135 | void i64_to_f128M( int64_t, float128_t * );
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| 136 |
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| 137 | /*----------------------------------------------------------------------------
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| 138 | | 16-bit (half-precision) floating-point operations.
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| 139 | *----------------------------------------------------------------------------*/
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| 140 | uint_fast32_t f16_to_ui32( float16_t, uint_fast8_t, bool );
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| 141 | uint_fast64_t f16_to_ui64( float16_t, uint_fast8_t, bool );
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| 142 | int_fast32_t f16_to_i32( float16_t, uint_fast8_t, bool );
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| 143 | int_fast64_t f16_to_i64( float16_t, uint_fast8_t, bool );
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| 144 | uint_fast32_t f16_to_ui32_r_minMag( float16_t, bool );
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| 145 | uint_fast64_t f16_to_ui64_r_minMag( float16_t, bool );
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| 146 | int_fast32_t f16_to_i32_r_minMag( float16_t, bool );
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| 147 | int_fast64_t f16_to_i64_r_minMag( float16_t, bool );
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| 148 | float32_t f16_to_f32( float16_t );
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| 149 | float64_t f16_to_f64( float16_t );
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| 150 | #ifdef SOFTFLOAT_FAST_INT64
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| 151 | extFloat80_t f16_to_extF80( float16_t );
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| 152 | float128_t f16_to_f128( float16_t );
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| 153 | #endif
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| 154 | void f16_to_extF80M( float16_t, extFloat80_t * );
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| 155 | void f16_to_f128M( float16_t, float128_t * );
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| 156 | float16_t f16_roundToInt( float16_t, uint_fast8_t, bool );
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| 157 | float16_t f16_add( float16_t, float16_t );
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| 158 | float16_t f16_sub( float16_t, float16_t );
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| 159 | float16_t f16_mul( float16_t, float16_t );
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| 160 | float16_t f16_mulAdd( float16_t, float16_t, float16_t );
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| 161 | float16_t f16_div( float16_t, float16_t );
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| 162 | float16_t f16_rem( float16_t, float16_t );
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| 163 | float16_t f16_sqrt( float16_t );
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| 164 | bool f16_eq( float16_t, float16_t );
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| 165 | bool f16_le( float16_t, float16_t );
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| 166 | bool f16_lt( float16_t, float16_t );
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| 167 | bool f16_eq_signaling( float16_t, float16_t );
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| 168 | bool f16_le_quiet( float16_t, float16_t );
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| 169 | bool f16_lt_quiet( float16_t, float16_t );
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| 170 | bool f16_isSignalingNaN( float16_t );
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| 171 |
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| 172 | /*----------------------------------------------------------------------------
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| 173 | | 32-bit (single-precision) floating-point operations.
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| 174 | *----------------------------------------------------------------------------*/
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| 175 | uint_fast32_t f32_to_ui32( float32_t, uint_fast8_t, bool );
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| 176 | uint_fast64_t f32_to_ui64( float32_t, uint_fast8_t, bool );
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| 177 | int_fast32_t f32_to_i32( float32_t, uint_fast8_t, bool );
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| 178 | int_fast64_t f32_to_i64( float32_t, uint_fast8_t, bool );
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| 179 | uint_fast32_t f32_to_ui32_r_minMag( float32_t, bool );
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| 180 | uint_fast64_t f32_to_ui64_r_minMag( float32_t, bool );
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| 181 | int_fast32_t f32_to_i32_r_minMag( float32_t, bool );
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| 182 | int_fast64_t f32_to_i64_r_minMag( float32_t, bool );
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| 183 | float16_t f32_to_f16( float32_t );
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| 184 | float64_t f32_to_f64( float32_t );
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| 185 | #ifdef SOFTFLOAT_FAST_INT64
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| 186 | extFloat80_t f32_to_extF80( float32_t );
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| 187 | float128_t f32_to_f128( float32_t );
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| 188 | #endif
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| 189 | void f32_to_extF80M( float32_t, extFloat80_t * );
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| 190 | void f32_to_f128M( float32_t, float128_t * );
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| 191 | float32_t f32_roundToInt( float32_t, uint_fast8_t, bool );
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| 192 | float32_t f32_add( float32_t, float32_t );
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| 193 | float32_t f32_sub( float32_t, float32_t );
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| 194 | float32_t f32_mul( float32_t, float32_t );
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| 195 | float32_t f32_mulAdd( float32_t, float32_t, float32_t );
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| 196 | float32_t f32_div( float32_t, float32_t );
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| 197 | float32_t f32_rem( float32_t, float32_t );
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| 198 | float32_t f32_sqrt( float32_t );
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| 199 | bool f32_eq( float32_t, float32_t );
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| 200 | bool f32_le( float32_t, float32_t );
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| 201 | bool f32_lt( float32_t, float32_t );
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| 202 | bool f32_eq_signaling( float32_t, float32_t );
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| 203 | bool f32_le_quiet( float32_t, float32_t );
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| 204 | bool f32_lt_quiet( float32_t, float32_t );
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| 205 | bool f32_isSignalingNaN( float32_t );
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| 206 |
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| 207 | /*----------------------------------------------------------------------------
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| 208 | | 64-bit (double-precision) floating-point operations.
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| 209 | *----------------------------------------------------------------------------*/
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| 210 | uint_fast32_t f64_to_ui32( float64_t, uint_fast8_t, bool );
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| 211 | uint_fast64_t f64_to_ui64( float64_t, uint_fast8_t, bool );
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| 212 | int_fast32_t f64_to_i32( float64_t, uint_fast8_t, bool );
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| 213 | int_fast64_t f64_to_i64( float64_t, uint_fast8_t, bool );
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| 214 | uint_fast32_t f64_to_ui32_r_minMag( float64_t, bool );
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| 215 | uint_fast64_t f64_to_ui64_r_minMag( float64_t, bool );
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| 216 | int_fast32_t f64_to_i32_r_minMag( float64_t, bool );
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| 217 | int_fast64_t f64_to_i64_r_minMag( float64_t, bool );
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| 218 | float16_t f64_to_f16( float64_t );
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| 219 | float32_t f64_to_f32( float64_t );
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| 220 | #ifdef SOFTFLOAT_FAST_INT64
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| 221 | extFloat80_t f64_to_extF80( float64_t );
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| 222 | float128_t f64_to_f128( float64_t );
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| 223 | #endif
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| 224 | void f64_to_extF80M( float64_t, extFloat80_t * );
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| 225 | void f64_to_f128M( float64_t, float128_t * );
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| 226 | float64_t f64_roundToInt( float64_t, uint_fast8_t, bool );
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| 227 | float64_t f64_add( float64_t, float64_t );
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| 228 | float64_t f64_sub( float64_t, float64_t );
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| 229 | float64_t f64_mul( float64_t, float64_t );
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| 230 | float64_t f64_mulAdd( float64_t, float64_t, float64_t );
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| 231 | float64_t f64_div( float64_t, float64_t );
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| 232 | float64_t f64_rem( float64_t, float64_t );
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| 233 | float64_t f64_sqrt( float64_t );
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| 234 | bool f64_eq( float64_t, float64_t );
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| 235 | bool f64_le( float64_t, float64_t );
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| 236 | bool f64_lt( float64_t, float64_t );
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| 237 | bool f64_eq_signaling( float64_t, float64_t );
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| 238 | bool f64_le_quiet( float64_t, float64_t );
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| 239 | bool f64_lt_quiet( float64_t, float64_t );
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| 240 | bool f64_isSignalingNaN( float64_t );
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| 241 |
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| 242 | /*----------------------------------------------------------------------------
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| 243 | | Rounding precision for 80-bit extended double-precision floating-point.
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| 244 | | Valid values are 32, 64, and 80.
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| 245 | *----------------------------------------------------------------------------*/
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| 246 | extern THREAD_LOCAL uint_fast8_t extF80_roundingPrecision;
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| 247 |
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| 248 | /*----------------------------------------------------------------------------
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| 249 | | 80-bit extended double-precision floating-point operations.
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| 250 | *----------------------------------------------------------------------------*/
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| 251 | #ifdef SOFTFLOAT_FAST_INT64
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| 252 | uint_fast32_t extF80_to_ui32( extFloat80_t, uint_fast8_t, bool );
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| 253 | uint_fast64_t extF80_to_ui64( extFloat80_t, uint_fast8_t, bool );
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| 254 | int_fast32_t extF80_to_i32( extFloat80_t, uint_fast8_t, bool );
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| 255 | int_fast64_t extF80_to_i64( extFloat80_t, uint_fast8_t, bool );
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| 256 | uint_fast32_t extF80_to_ui32_r_minMag( extFloat80_t, bool );
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| 257 | uint_fast64_t extF80_to_ui64_r_minMag( extFloat80_t, bool );
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| 258 | int_fast32_t extF80_to_i32_r_minMag( extFloat80_t, bool );
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| 259 | int_fast64_t extF80_to_i64_r_minMag( extFloat80_t, bool );
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| 260 | float16_t extF80_to_f16( extFloat80_t );
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| 261 | float32_t extF80_to_f32( extFloat80_t );
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| 262 | float64_t extF80_to_f64( extFloat80_t );
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| 263 | float128_t extF80_to_f128( extFloat80_t );
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| 264 | extFloat80_t extF80_roundToInt( extFloat80_t, uint_fast8_t, bool );
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| 265 | extFloat80_t extF80_add( extFloat80_t, extFloat80_t );
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| 266 | extFloat80_t extF80_sub( extFloat80_t, extFloat80_t );
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| 267 | extFloat80_t extF80_mul( extFloat80_t, extFloat80_t );
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| 268 | extFloat80_t extF80_div( extFloat80_t, extFloat80_t );
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| 269 | extFloat80_t extF80_rem( extFloat80_t, extFloat80_t );
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| 270 | extFloat80_t extF80_sqrt( extFloat80_t );
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| 271 | bool extF80_eq( extFloat80_t, extFloat80_t );
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| 272 | bool extF80_le( extFloat80_t, extFloat80_t );
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| 273 | bool extF80_lt( extFloat80_t, extFloat80_t );
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| 274 | bool extF80_eq_signaling( extFloat80_t, extFloat80_t );
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| 275 | bool extF80_le_quiet( extFloat80_t, extFloat80_t );
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| 276 | bool extF80_lt_quiet( extFloat80_t, extFloat80_t );
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| 277 | bool extF80_isSignalingNaN( extFloat80_t );
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| 278 | #endif
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| 279 | uint_fast32_t extF80M_to_ui32( const extFloat80_t *, uint_fast8_t, bool );
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| 280 | uint_fast64_t extF80M_to_ui64( const extFloat80_t *, uint_fast8_t, bool );
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| 281 | int_fast32_t extF80M_to_i32( const extFloat80_t *, uint_fast8_t, bool );
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| 282 | int_fast64_t extF80M_to_i64( const extFloat80_t *, uint_fast8_t, bool );
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| 283 | uint_fast32_t extF80M_to_ui32_r_minMag( const extFloat80_t *, bool );
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| 284 | uint_fast64_t extF80M_to_ui64_r_minMag( const extFloat80_t *, bool );
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| 285 | int_fast32_t extF80M_to_i32_r_minMag( const extFloat80_t *, bool );
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| 286 | int_fast64_t extF80M_to_i64_r_minMag( const extFloat80_t *, bool );
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| 287 | float16_t extF80M_to_f16( const extFloat80_t * );
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| 288 | float32_t extF80M_to_f32( const extFloat80_t * );
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| 289 | float64_t extF80M_to_f64( const extFloat80_t * );
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| 290 | void extF80M_to_f128M( const extFloat80_t *, float128_t * );
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| 291 | void
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| 292 | extF80M_roundToInt(
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| 293 | const extFloat80_t *, uint_fast8_t, bool, extFloat80_t * );
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| 294 | void extF80M_add( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
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| 295 | void extF80M_sub( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
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| 296 | void extF80M_mul( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
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| 297 | void extF80M_div( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
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| 298 | void extF80M_rem( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
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| 299 | void extF80M_sqrt( const extFloat80_t *, extFloat80_t * );
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| 300 | bool extF80M_eq( const extFloat80_t *, const extFloat80_t * );
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| 301 | bool extF80M_le( const extFloat80_t *, const extFloat80_t * );
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| 302 | bool extF80M_lt( const extFloat80_t *, const extFloat80_t * );
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| 303 | bool extF80M_eq_signaling( const extFloat80_t *, const extFloat80_t * );
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| 304 | bool extF80M_le_quiet( const extFloat80_t *, const extFloat80_t * );
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| 305 | bool extF80M_lt_quiet( const extFloat80_t *, const extFloat80_t * );
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| 306 | bool extF80M_isSignalingNaN( const extFloat80_t * );
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| 307 |
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| 308 | /*----------------------------------------------------------------------------
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| 309 | | 128-bit (quadruple-precision) floating-point operations.
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| 310 | *----------------------------------------------------------------------------*/
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| 311 | #ifdef SOFTFLOAT_FAST_INT64
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| 312 | uint_fast32_t f128_to_ui32( float128_t, uint_fast8_t, bool );
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| 313 | uint_fast64_t f128_to_ui64( float128_t, uint_fast8_t, bool );
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| 314 | int_fast32_t f128_to_i32( float128_t, uint_fast8_t, bool );
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| 315 | int_fast64_t f128_to_i64( float128_t, uint_fast8_t, bool );
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| 316 | uint_fast32_t f128_to_ui32_r_minMag( float128_t, bool );
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| 317 | uint_fast64_t f128_to_ui64_r_minMag( float128_t, bool );
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| 318 | int_fast32_t f128_to_i32_r_minMag( float128_t, bool );
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| 319 | int_fast64_t f128_to_i64_r_minMag( float128_t, bool );
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| 320 | float16_t f128_to_f16( float128_t );
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| 321 | float32_t f128_to_f32( float128_t );
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| 322 | float64_t f128_to_f64( float128_t );
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| 323 | extFloat80_t f128_to_extF80( float128_t );
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| 324 | float128_t f128_roundToInt( float128_t, uint_fast8_t, bool );
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| 325 | float128_t f128_add( float128_t, float128_t );
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| 326 | float128_t f128_sub( float128_t, float128_t );
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| 327 | float128_t f128_mul( float128_t, float128_t );
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| 328 | float128_t f128_mulAdd( float128_t, float128_t, float128_t );
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| 329 | float128_t f128_div( float128_t, float128_t );
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| 330 | float128_t f128_rem( float128_t, float128_t );
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| 331 | float128_t f128_sqrt( float128_t );
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| 332 | bool f128_eq( float128_t, float128_t );
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| 333 | bool f128_le( float128_t, float128_t );
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| 334 | bool f128_lt( float128_t, float128_t );
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| 335 | bool f128_eq_signaling( float128_t, float128_t );
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| 336 | bool f128_le_quiet( float128_t, float128_t );
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| 337 | bool f128_lt_quiet( float128_t, float128_t );
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| 338 | bool f128_isSignalingNaN( float128_t );
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| 339 | #endif
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| 340 | uint_fast32_t f128M_to_ui32( const float128_t *, uint_fast8_t, bool );
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| 341 | uint_fast64_t f128M_to_ui64( const float128_t *, uint_fast8_t, bool );
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| 342 | int_fast32_t f128M_to_i32( const float128_t *, uint_fast8_t, bool );
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| 343 | int_fast64_t f128M_to_i64( const float128_t *, uint_fast8_t, bool );
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| 344 | uint_fast32_t f128M_to_ui32_r_minMag( const float128_t *, bool );
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| 345 | uint_fast64_t f128M_to_ui64_r_minMag( const float128_t *, bool );
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| 346 | int_fast32_t f128M_to_i32_r_minMag( const float128_t *, bool );
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| 347 | int_fast64_t f128M_to_i64_r_minMag( const float128_t *, bool );
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| 348 | float16_t f128M_to_f16( const float128_t * );
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| 349 | float32_t f128M_to_f32( const float128_t * );
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| 350 | float64_t f128M_to_f64( const float128_t * );
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| 351 | void f128M_to_extF80M( const float128_t *, extFloat80_t * );
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| 352 | void f128M_roundToInt( const float128_t *, uint_fast8_t, bool, float128_t * );
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| 353 | void f128M_add( const float128_t *, const float128_t *, float128_t * );
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| 354 | void f128M_sub( const float128_t *, const float128_t *, float128_t * );
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| 355 | void f128M_mul( const float128_t *, const float128_t *, float128_t * );
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| 356 | void
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| 357 | f128M_mulAdd(
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| 358 | const float128_t *, const float128_t *, const float128_t *, float128_t *
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| 359 | );
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| 360 | void f128M_div( const float128_t *, const float128_t *, float128_t * );
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| 361 | void f128M_rem( const float128_t *, const float128_t *, float128_t * );
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| 362 | void f128M_sqrt( const float128_t *, float128_t * );
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| 363 | bool f128M_eq( const float128_t *, const float128_t * );
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| 364 | bool f128M_le( const float128_t *, const float128_t * );
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| 365 | bool f128M_lt( const float128_t *, const float128_t * );
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| 366 | bool f128M_eq_signaling( const float128_t *, const float128_t * );
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| 367 | bool f128M_le_quiet( const float128_t *, const float128_t * );
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| 368 | bool f128M_lt_quiet( const float128_t *, const float128_t * );
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| 369 | bool f128M_isSignalingNaN( const float128_t * );
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| 370 |
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| 371 | #endif
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| 372 |
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