373 lines
17 KiB
C
373 lines
17 KiB
C
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/*============================================================================
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This C header file is part of the SoftFloat IEEE Floating-Point Arithmetic
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Package, Release 3e, by John R. Hauser.
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Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017 The Regents of the
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University of California. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions, and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions, and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the University nor the names of its contributors may
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be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
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DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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=============================================================================*/
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/*============================================================================
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| Note: If SoftFloat is made available as a general library for programs to
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| use, it is strongly recommended that a platform-specific version of this
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| header, "softfloat.h", be created that folds in "softfloat_types.h" and that
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| eliminates all dependencies on compile-time macros.
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*============================================================================*/
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#ifndef softfloat_h
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#define softfloat_h 1
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#include <stdbool.h>
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#include <stdint.h>
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#include "softfloat_types.h"
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#ifndef THREAD_LOCAL
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#define THREAD_LOCAL
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#endif
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/*----------------------------------------------------------------------------
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| Software floating-point underflow tininess-detection mode.
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*----------------------------------------------------------------------------*/
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extern THREAD_LOCAL uint_fast8_t softfloat_detectTininess;
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enum {
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softfloat_tininess_beforeRounding = 0,
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softfloat_tininess_afterRounding = 1
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};
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/*----------------------------------------------------------------------------
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| Software floating-point rounding mode. (Mode "odd" is supported only if
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| SoftFloat is compiled with macro 'SOFTFLOAT_ROUND_ODD' defined.)
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*----------------------------------------------------------------------------*/
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extern THREAD_LOCAL uint_fast8_t softfloat_roundingMode;
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enum {
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softfloat_round_near_even = 0,
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softfloat_round_minMag = 1,
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softfloat_round_min = 2,
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softfloat_round_max = 3,
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softfloat_round_near_maxMag = 4,
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softfloat_round_odd = 6
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};
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/*----------------------------------------------------------------------------
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| Software floating-point exception flags.
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*----------------------------------------------------------------------------*/
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extern THREAD_LOCAL uint_fast8_t softfloat_exceptionFlags;
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enum {
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softfloat_flag_inexact = 1,
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softfloat_flag_underflow = 2,
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softfloat_flag_overflow = 4,
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softfloat_flag_infinite = 8,
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softfloat_flag_invalid = 16
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};
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/*----------------------------------------------------------------------------
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| Routine to raise any or all of the software floating-point exception flags.
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*----------------------------------------------------------------------------*/
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void softfloat_raiseFlags( uint_fast8_t );
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/*----------------------------------------------------------------------------
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| Integer-to-floating-point conversion routines.
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*----------------------------------------------------------------------------*/
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float16_t ui32_to_f16( uint32_t );
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float32_t ui32_to_f32( uint32_t );
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float64_t ui32_to_f64( uint32_t );
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#ifdef SOFTFLOAT_FAST_INT64
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extFloat80_t ui32_to_extF80( uint32_t );
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float128_t ui32_to_f128( uint32_t );
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#endif
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void ui32_to_extF80M( uint32_t, extFloat80_t * );
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void ui32_to_f128M( uint32_t, float128_t * );
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float16_t ui64_to_f16( uint64_t );
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float32_t ui64_to_f32( uint64_t );
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float64_t ui64_to_f64( uint64_t );
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#ifdef SOFTFLOAT_FAST_INT64
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extFloat80_t ui64_to_extF80( uint64_t );
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float128_t ui64_to_f128( uint64_t );
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#endif
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void ui64_to_extF80M( uint64_t, extFloat80_t * );
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void ui64_to_f128M( uint64_t, float128_t * );
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float16_t i32_to_f16( int32_t );
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float32_t i32_to_f32( int32_t );
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float64_t i32_to_f64( int32_t );
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#ifdef SOFTFLOAT_FAST_INT64
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extFloat80_t i32_to_extF80( int32_t );
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float128_t i32_to_f128( int32_t );
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#endif
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void i32_to_extF80M( int32_t, extFloat80_t * );
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void i32_to_f128M( int32_t, float128_t * );
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float16_t i64_to_f16( int64_t );
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float32_t i64_to_f32( int64_t );
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float64_t i64_to_f64( int64_t );
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#ifdef SOFTFLOAT_FAST_INT64
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extFloat80_t i64_to_extF80( int64_t );
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float128_t i64_to_f128( int64_t );
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#endif
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void i64_to_extF80M( int64_t, extFloat80_t * );
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void i64_to_f128M( int64_t, float128_t * );
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/*----------------------------------------------------------------------------
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| 16-bit (half-precision) floating-point operations.
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*----------------------------------------------------------------------------*/
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uint_fast32_t f16_to_ui32( float16_t, uint_fast8_t, bool );
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uint_fast64_t f16_to_ui64( float16_t, uint_fast8_t, bool );
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int_fast32_t f16_to_i32( float16_t, uint_fast8_t, bool );
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int_fast64_t f16_to_i64( float16_t, uint_fast8_t, bool );
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uint_fast32_t f16_to_ui32_r_minMag( float16_t, bool );
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uint_fast64_t f16_to_ui64_r_minMag( float16_t, bool );
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int_fast32_t f16_to_i32_r_minMag( float16_t, bool );
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int_fast64_t f16_to_i64_r_minMag( float16_t, bool );
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float32_t f16_to_f32( float16_t );
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float64_t f16_to_f64( float16_t );
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#ifdef SOFTFLOAT_FAST_INT64
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extFloat80_t f16_to_extF80( float16_t );
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float128_t f16_to_f128( float16_t );
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#endif
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void f16_to_extF80M( float16_t, extFloat80_t * );
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void f16_to_f128M( float16_t, float128_t * );
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float16_t f16_roundToInt( float16_t, uint_fast8_t, bool );
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float16_t f16_add( float16_t, float16_t );
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float16_t f16_sub( float16_t, float16_t );
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float16_t f16_mul( float16_t, float16_t );
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float16_t f16_mulAdd( float16_t, float16_t, float16_t );
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float16_t f16_div( float16_t, float16_t );
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float16_t f16_rem( float16_t, float16_t );
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float16_t f16_sqrt( float16_t );
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bool f16_eq( float16_t, float16_t );
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bool f16_le( float16_t, float16_t );
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bool f16_lt( float16_t, float16_t );
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bool f16_eq_signaling( float16_t, float16_t );
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bool f16_le_quiet( float16_t, float16_t );
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bool f16_lt_quiet( float16_t, float16_t );
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bool f16_isSignalingNaN( float16_t );
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/*----------------------------------------------------------------------------
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| 32-bit (single-precision) floating-point operations.
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*----------------------------------------------------------------------------*/
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uint_fast32_t f32_to_ui32( float32_t, uint_fast8_t, bool );
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uint_fast64_t f32_to_ui64( float32_t, uint_fast8_t, bool );
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int_fast32_t f32_to_i32( float32_t, uint_fast8_t, bool );
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int_fast64_t f32_to_i64( float32_t, uint_fast8_t, bool );
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uint_fast32_t f32_to_ui32_r_minMag( float32_t, bool );
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uint_fast64_t f32_to_ui64_r_minMag( float32_t, bool );
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int_fast32_t f32_to_i32_r_minMag( float32_t, bool );
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int_fast64_t f32_to_i64_r_minMag( float32_t, bool );
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float16_t f32_to_f16( float32_t );
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float64_t f32_to_f64( float32_t );
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#ifdef SOFTFLOAT_FAST_INT64
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extFloat80_t f32_to_extF80( float32_t );
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float128_t f32_to_f128( float32_t );
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#endif
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void f32_to_extF80M( float32_t, extFloat80_t * );
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void f32_to_f128M( float32_t, float128_t * );
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float32_t f32_roundToInt( float32_t, uint_fast8_t, bool );
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float32_t f32_add( float32_t, float32_t );
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float32_t f32_sub( float32_t, float32_t );
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float32_t f32_mul( float32_t, float32_t );
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float32_t f32_mulAdd( float32_t, float32_t, float32_t );
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float32_t f32_div( float32_t, float32_t );
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float32_t f32_rem( float32_t, float32_t );
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float32_t f32_sqrt( float32_t );
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bool f32_eq( float32_t, float32_t );
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bool f32_le( float32_t, float32_t );
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bool f32_lt( float32_t, float32_t );
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bool f32_eq_signaling( float32_t, float32_t );
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bool f32_le_quiet( float32_t, float32_t );
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bool f32_lt_quiet( float32_t, float32_t );
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bool f32_isSignalingNaN( float32_t );
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/*----------------------------------------------------------------------------
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| 64-bit (double-precision) floating-point operations.
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*----------------------------------------------------------------------------*/
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uint_fast32_t f64_to_ui32( float64_t, uint_fast8_t, bool );
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uint_fast64_t f64_to_ui64( float64_t, uint_fast8_t, bool );
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int_fast32_t f64_to_i32( float64_t, uint_fast8_t, bool );
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int_fast64_t f64_to_i64( float64_t, uint_fast8_t, bool );
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uint_fast32_t f64_to_ui32_r_minMag( float64_t, bool );
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uint_fast64_t f64_to_ui64_r_minMag( float64_t, bool );
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int_fast32_t f64_to_i32_r_minMag( float64_t, bool );
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int_fast64_t f64_to_i64_r_minMag( float64_t, bool );
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float16_t f64_to_f16( float64_t );
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float32_t f64_to_f32( float64_t );
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#ifdef SOFTFLOAT_FAST_INT64
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extFloat80_t f64_to_extF80( float64_t );
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float128_t f64_to_f128( float64_t );
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#endif
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void f64_to_extF80M( float64_t, extFloat80_t * );
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void f64_to_f128M( float64_t, float128_t * );
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float64_t f64_roundToInt( float64_t, uint_fast8_t, bool );
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float64_t f64_add( float64_t, float64_t );
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float64_t f64_sub( float64_t, float64_t );
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float64_t f64_mul( float64_t, float64_t );
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float64_t f64_mulAdd( float64_t, float64_t, float64_t );
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float64_t f64_div( float64_t, float64_t );
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float64_t f64_rem( float64_t, float64_t );
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float64_t f64_sqrt( float64_t );
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bool f64_eq( float64_t, float64_t );
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bool f64_le( float64_t, float64_t );
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bool f64_lt( float64_t, float64_t );
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bool f64_eq_signaling( float64_t, float64_t );
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bool f64_le_quiet( float64_t, float64_t );
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bool f64_lt_quiet( float64_t, float64_t );
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bool f64_isSignalingNaN( float64_t );
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/*----------------------------------------------------------------------------
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| Rounding precision for 80-bit extended double-precision floating-point.
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| Valid values are 32, 64, and 80.
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*----------------------------------------------------------------------------*/
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extern THREAD_LOCAL uint_fast8_t extF80_roundingPrecision;
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/*----------------------------------------------------------------------------
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| 80-bit extended double-precision floating-point operations.
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*----------------------------------------------------------------------------*/
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#ifdef SOFTFLOAT_FAST_INT64
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uint_fast32_t extF80_to_ui32( extFloat80_t, uint_fast8_t, bool );
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uint_fast64_t extF80_to_ui64( extFloat80_t, uint_fast8_t, bool );
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int_fast32_t extF80_to_i32( extFloat80_t, uint_fast8_t, bool );
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int_fast64_t extF80_to_i64( extFloat80_t, uint_fast8_t, bool );
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uint_fast32_t extF80_to_ui32_r_minMag( extFloat80_t, bool );
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uint_fast64_t extF80_to_ui64_r_minMag( extFloat80_t, bool );
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int_fast32_t extF80_to_i32_r_minMag( extFloat80_t, bool );
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int_fast64_t extF80_to_i64_r_minMag( extFloat80_t, bool );
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float16_t extF80_to_f16( extFloat80_t );
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float32_t extF80_to_f32( extFloat80_t );
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float64_t extF80_to_f64( extFloat80_t );
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float128_t extF80_to_f128( extFloat80_t );
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extFloat80_t extF80_roundToInt( extFloat80_t, uint_fast8_t, bool );
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extFloat80_t extF80_add( extFloat80_t, extFloat80_t );
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extFloat80_t extF80_sub( extFloat80_t, extFloat80_t );
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extFloat80_t extF80_mul( extFloat80_t, extFloat80_t );
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extFloat80_t extF80_div( extFloat80_t, extFloat80_t );
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extFloat80_t extF80_rem( extFloat80_t, extFloat80_t );
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extFloat80_t extF80_sqrt( extFloat80_t );
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bool extF80_eq( extFloat80_t, extFloat80_t );
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bool extF80_le( extFloat80_t, extFloat80_t );
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bool extF80_lt( extFloat80_t, extFloat80_t );
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bool extF80_eq_signaling( extFloat80_t, extFloat80_t );
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bool extF80_le_quiet( extFloat80_t, extFloat80_t );
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bool extF80_lt_quiet( extFloat80_t, extFloat80_t );
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bool extF80_isSignalingNaN( extFloat80_t );
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#endif
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uint_fast32_t extF80M_to_ui32( const extFloat80_t *, uint_fast8_t, bool );
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uint_fast64_t extF80M_to_ui64( const extFloat80_t *, uint_fast8_t, bool );
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int_fast32_t extF80M_to_i32( const extFloat80_t *, uint_fast8_t, bool );
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int_fast64_t extF80M_to_i64( const extFloat80_t *, uint_fast8_t, bool );
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uint_fast32_t extF80M_to_ui32_r_minMag( const extFloat80_t *, bool );
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uint_fast64_t extF80M_to_ui64_r_minMag( const extFloat80_t *, bool );
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int_fast32_t extF80M_to_i32_r_minMag( const extFloat80_t *, bool );
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int_fast64_t extF80M_to_i64_r_minMag( const extFloat80_t *, bool );
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||
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|
float16_t extF80M_to_f16( const extFloat80_t * );
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||
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float32_t extF80M_to_f32( const extFloat80_t * );
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||
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|
float64_t extF80M_to_f64( const extFloat80_t * );
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|
void extF80M_to_f128M( const extFloat80_t *, float128_t * );
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||
|
|
void
|
||
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|
extF80M_roundToInt(
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||
|
|
const extFloat80_t *, uint_fast8_t, bool, extFloat80_t * );
|
||
|
|
void extF80M_add( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
|
||
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|
void extF80M_sub( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
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||
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|
void extF80M_mul( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
|
||
|
|
void extF80M_div( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
|
||
|
|
void extF80M_rem( const extFloat80_t *, const extFloat80_t *, extFloat80_t * );
|
||
|
|
void extF80M_sqrt( const extFloat80_t *, extFloat80_t * );
|
||
|
|
bool extF80M_eq( const extFloat80_t *, const extFloat80_t * );
|
||
|
|
bool extF80M_le( const extFloat80_t *, const extFloat80_t * );
|
||
|
|
bool extF80M_lt( const extFloat80_t *, const extFloat80_t * );
|
||
|
|
bool extF80M_eq_signaling( const extFloat80_t *, const extFloat80_t * );
|
||
|
|
bool extF80M_le_quiet( const extFloat80_t *, const extFloat80_t * );
|
||
|
|
bool extF80M_lt_quiet( const extFloat80_t *, const extFloat80_t * );
|
||
|
|
bool extF80M_isSignalingNaN( const extFloat80_t * );
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
| 128-bit (quadruple-precision) floating-point operations.
|
||
|
|
*----------------------------------------------------------------------------*/
|
||
|
|
#ifdef SOFTFLOAT_FAST_INT64
|
||
|
|
uint_fast32_t f128_to_ui32( float128_t, uint_fast8_t, bool );
|
||
|
|
uint_fast64_t f128_to_ui64( float128_t, uint_fast8_t, bool );
|
||
|
|
int_fast32_t f128_to_i32( float128_t, uint_fast8_t, bool );
|
||
|
|
int_fast64_t f128_to_i64( float128_t, uint_fast8_t, bool );
|
||
|
|
uint_fast32_t f128_to_ui32_r_minMag( float128_t, bool );
|
||
|
|
uint_fast64_t f128_to_ui64_r_minMag( float128_t, bool );
|
||
|
|
int_fast32_t f128_to_i32_r_minMag( float128_t, bool );
|
||
|
|
int_fast64_t f128_to_i64_r_minMag( float128_t, bool );
|
||
|
|
float16_t f128_to_f16( float128_t );
|
||
|
|
float32_t f128_to_f32( float128_t );
|
||
|
|
float64_t f128_to_f64( float128_t );
|
||
|
|
extFloat80_t f128_to_extF80( float128_t );
|
||
|
|
float128_t f128_roundToInt( float128_t, uint_fast8_t, bool );
|
||
|
|
float128_t f128_add( float128_t, float128_t );
|
||
|
|
float128_t f128_sub( float128_t, float128_t );
|
||
|
|
float128_t f128_mul( float128_t, float128_t );
|
||
|
|
float128_t f128_mulAdd( float128_t, float128_t, float128_t );
|
||
|
|
float128_t f128_div( float128_t, float128_t );
|
||
|
|
float128_t f128_rem( float128_t, float128_t );
|
||
|
|
float128_t f128_sqrt( float128_t );
|
||
|
|
bool f128_eq( float128_t, float128_t );
|
||
|
|
bool f128_le( float128_t, float128_t );
|
||
|
|
bool f128_lt( float128_t, float128_t );
|
||
|
|
bool f128_eq_signaling( float128_t, float128_t );
|
||
|
|
bool f128_le_quiet( float128_t, float128_t );
|
||
|
|
bool f128_lt_quiet( float128_t, float128_t );
|
||
|
|
bool f128_isSignalingNaN( float128_t );
|
||
|
|
#endif
|
||
|
|
uint_fast32_t f128M_to_ui32( const float128_t *, uint_fast8_t, bool );
|
||
|
|
uint_fast64_t f128M_to_ui64( const float128_t *, uint_fast8_t, bool );
|
||
|
|
int_fast32_t f128M_to_i32( const float128_t *, uint_fast8_t, bool );
|
||
|
|
int_fast64_t f128M_to_i64( const float128_t *, uint_fast8_t, bool );
|
||
|
|
uint_fast32_t f128M_to_ui32_r_minMag( const float128_t *, bool );
|
||
|
|
uint_fast64_t f128M_to_ui64_r_minMag( const float128_t *, bool );
|
||
|
|
int_fast32_t f128M_to_i32_r_minMag( const float128_t *, bool );
|
||
|
|
int_fast64_t f128M_to_i64_r_minMag( const float128_t *, bool );
|
||
|
|
float16_t f128M_to_f16( const float128_t * );
|
||
|
|
float32_t f128M_to_f32( const float128_t * );
|
||
|
|
float64_t f128M_to_f64( const float128_t * );
|
||
|
|
void f128M_to_extF80M( const float128_t *, extFloat80_t * );
|
||
|
|
void f128M_roundToInt( const float128_t *, uint_fast8_t, bool, float128_t * );
|
||
|
|
void f128M_add( const float128_t *, const float128_t *, float128_t * );
|
||
|
|
void f128M_sub( const float128_t *, const float128_t *, float128_t * );
|
||
|
|
void f128M_mul( const float128_t *, const float128_t *, float128_t * );
|
||
|
|
void
|
||
|
|
f128M_mulAdd(
|
||
|
|
const float128_t *, const float128_t *, const float128_t *, float128_t *
|
||
|
|
);
|
||
|
|
void f128M_div( const float128_t *, const float128_t *, float128_t * );
|
||
|
|
void f128M_rem( const float128_t *, const float128_t *, float128_t * );
|
||
|
|
void f128M_sqrt( const float128_t *, float128_t * );
|
||
|
|
bool f128M_eq( const float128_t *, const float128_t * );
|
||
|
|
bool f128M_le( const float128_t *, const float128_t * );
|
||
|
|
bool f128M_lt( const float128_t *, const float128_t * );
|
||
|
|
bool f128M_eq_signaling( const float128_t *, const float128_t * );
|
||
|
|
bool f128M_le_quiet( const float128_t *, const float128_t * );
|
||
|
|
bool f128M_lt_quiet( const float128_t *, const float128_t * );
|
||
|
|
bool f128M_isSignalingNaN( const float128_t * );
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|