bbcf7f0221
This patch updates fputils to the latest revision (0721843) from the upstream repository (github.com/andysan/fputils). This effectively only updates the license of the library to match gem5's 3-clause BSD license. Change-Id: I46d8a5dfac2f4a95e66ee82a15288ac424d7df90 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22125 Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com> Maintainer: Jason Lowe-Power <jason@lowepower.com> Tested-by: kokoro <noreply+kokoro@google.com>
115 lines
4.1 KiB
C
115 lines
4.1 KiB
C
/*
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* Copyright (c) 2013 Andreas Sandberg
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* All rights reserved
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*
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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
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Andreas Sandberg
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*/
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#ifndef _FPBITS_H
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#define _FPBITS_H
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#include <stdint.h>
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#define FP80_FRAC_BITS 63
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#define FP80_INT_BIT 0x8000000000000000ULL
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#define FP80_QNAN_BIT 0x4000000000000000ULL
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#define FP80_FRAC_MASK 0x7fffffffffffffffULL
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#define FP80_EXP_MASK 0x7fff
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#define FP80_SIGN_BIT 0x8000
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#define FP80_EXP_BIAS 0x3fff
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#define FP80_EXP_SPECIAL 0x7fff
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#define FP80_FRAC_SNAN 0x3fffffffffffffffULL
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#define FP80_FRAC_QNAN 0x7fffffffffffffffULL
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#define FP80_FRAC_QNANI 0x4000000000000000ULL
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#define FP64_EXP_SHIFT 52
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#define FP64_FRAC_BITS 52
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#define FP64_SIGN_BIT 0x8000000000000000ULL
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#define FP64_EXP_MASK 0x7ff0000000000000ULL
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#define FP64_FRAC_MASK 0x000fffffffffffffULL
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#define FP64_EXP_BIAS 0x3ff
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#define FP64_EXP_SPECIAL 0x7ff
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#define FP64_FRAC_SNAN 0x0007ffffffffffffULL
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#define FP64_FRAC_QNAN 0x000fffffffffffffULL
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#define FP64_FRAC_QNANI 0x0008000000000000ULL
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#define BUILD_IFP64(sign, frac, exp) \
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((sign) ? FP64_SIGN_BIT : 0) | \
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(((uint64_t)(exp) << FP64_EXP_SHIFT) & FP64_EXP_MASK) | \
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((frac) & FP64_FRAC_MASK)
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#define BUILD_FP64(sign, frac, exp) \
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{ .bits = BUILD_IFP64(sign, frac, exp) }
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static inline fp64_t
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build_fp64(int sign, uint64_t frac, int exp)
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{
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const fp64_t f = BUILD_FP64(sign, frac, exp);
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return f;
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}
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#define BUILD_FP80_SE(sign, exp) \
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((sign) ? FP80_SIGN_BIT : 0) | \
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((exp) & FP80_EXP_MASK)
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#define BUILD_FP80_FI(frac, exp) \
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((exp) ? FP80_INT_BIT : 0) | \
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((frac) & FP80_FRAC_MASK)
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#define BUILD_FP80(sign, frac, exp) \
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{ \
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.repr.pad = { 0 }, \
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.repr.se = BUILD_FP80_SE(sign, exp), \
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.repr.fi = BUILD_FP80_FI(frac, exp) \
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}
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static inline fp80_t
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build_fp80(int sign, uint64_t frac, int exp)
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{
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const fp80_t f = BUILD_FP80(sign, frac, exp);
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return f;
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}
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#define FP80_FRAC(fp80) \
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(fp80.repr.fi & FP80_FRAC_MASK)
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#define FP80_EXP(fp80) \
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(fp80.repr.se & FP80_EXP_MASK)
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#define FP64_FRAC(fp64) \
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(fp64.bits & FP64_FRAC_MASK)
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#define FP64_EXP(fp80) \
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((fp64.bits & FP64_EXP_MASK) >> FP64_EXP_SHIFT)
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#endif
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