82 lines
4.0 KiB
C
82 lines
4.0 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, 2017 The Regents of the University of
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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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#ifndef softfloat_types_h
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#define softfloat_types_h 1
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#include <stdint.h>
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/*----------------------------------------------------------------------------
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| Types used to pass 16-bit, 32-bit, 64-bit, and 128-bit floating-point
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| arguments and results to/from functions. These types must be exactly
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| 16 bits, 32 bits, 64 bits, and 128 bits in size, respectively. Where a
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| platform has "native" support for IEEE-Standard floating-point formats,
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| the types below may, if desired, be defined as aliases for the native types
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| (typically 'float' and 'double', and possibly 'long double').
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*----------------------------------------------------------------------------*/
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typedef struct { uint16_t v; } float16_t;
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typedef struct { uint32_t v; } float32_t;
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typedef struct { uint64_t v; } float64_t;
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typedef struct { uint64_t v[2]; } float128_t;
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/*----------------------------------------------------------------------------
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| The format of an 80-bit extended floating-point number in memory. This
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| structure must contain a 16-bit field named 'signExp' and a 64-bit field
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| named 'signif'.
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*----------------------------------------------------------------------------*/
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#ifdef LITTLEENDIAN
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struct extFloat80M { uint64_t signif; uint16_t signExp; };
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#else
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struct extFloat80M { uint16_t signExp; uint64_t signif; };
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#endif
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/*----------------------------------------------------------------------------
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| The type used to pass 80-bit extended floating-point arguments and
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| results to/from functions. This type must have size identical to
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| 'struct extFloat80M'. Type 'extFloat80_t' can be defined as an alias for
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| 'struct extFloat80M'. Alternatively, if a platform has "native" support
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| for IEEE-Standard 80-bit extended floating-point, it may be possible,
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| if desired, to define 'extFloat80_t' as an alias for the native type
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| (presumably either 'long double' or a nonstandard compiler-intrinsic type).
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| In that case, the 'signif' and 'signExp' fields of 'struct extFloat80M'
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| must align exactly with the locations in memory of the sign, exponent, and
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| significand of the native type.
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*----------------------------------------------------------------------------*/
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typedef struct extFloat80M extFloat80_t;
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#endif
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