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author | Andrew Waterman <andrew@sifive.com> | 2018-07-11 01:16:28 -0700 |
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committer | Andrew Waterman <andrew@sifive.com> | 2018-07-11 01:16:28 -0700 |
commit | 5cd8d2b93fad2011fdf8f49a263d77697af35b32 (patch) | |
tree | f6fb9cb6d3bef2aa5c9903511b92e5a6e99e9519 /softfloat/extF80M_eq.c | |
parent | 8e69141749065ff957383d2112768f95a33429b6 (diff) | |
download | pk-5cd8d2b93fad2011fdf8f49a263d77697af35b32.zip pk-5cd8d2b93fad2011fdf8f49a263d77697af35b32.tar.gz pk-5cd8d2b93fad2011fdf8f49a263d77697af35b32.tar.bz2 |
Upgrade to SoftFloat 3e
Diffstat (limited to 'softfloat/extF80M_eq.c')
-rw-r--r-- | softfloat/extF80M_eq.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/softfloat/extF80M_eq.c b/softfloat/extF80M_eq.c new file mode 100644 index 0000000..2480037 --- /dev/null +++ b/softfloat/extF80M_eq.c @@ -0,0 +1,98 @@ + +/*============================================================================ + +This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic +Package, Release 3e, by John R. Hauser. + +Copyright 2011, 2012, 2013, 2014 The Regents of the University of California. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions, and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions, and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + 3. Neither the name of the University nor the names of its contributors may + be used to endorse or promote products derived from this software without + specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY +EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE +DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +=============================================================================*/ + +#include <stdbool.h> +#include <stdint.h> +#include "platform.h" +#include "internals.h" +#include "specialize.h" +#include "softfloat.h" + +#ifdef SOFTFLOAT_FAST_INT64 + +bool extF80M_eq( const extFloat80_t *aPtr, const extFloat80_t *bPtr ) +{ + + return extF80_eq( *aPtr, *bPtr ); + +} + +#else + +bool extF80M_eq( const extFloat80_t *aPtr, const extFloat80_t *bPtr ) +{ + const struct extFloat80M *aSPtr, *bSPtr; + uint_fast16_t uiA64; + uint64_t uiA0; + uint_fast16_t uiB64; + uint64_t uiB0; + + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + aSPtr = (const struct extFloat80M *) aPtr; + bSPtr = (const struct extFloat80M *) bPtr; + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + uiA64 = aSPtr->signExp; + uiA0 = aSPtr->signif; + uiB64 = bSPtr->signExp; + uiB0 = bSPtr->signif; + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + if ( isNaNExtF80UI( uiA64, uiA0 ) || isNaNExtF80UI( uiB64, uiB0 ) ) { + if ( + softfloat_isSigNaNExtF80UI( uiA64, uiA0 ) + || softfloat_isSigNaNExtF80UI( uiB64, uiB0 ) + ) { + softfloat_raiseFlags( softfloat_flag_invalid ); + } + return false; + } + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + if ( uiA0 == uiB0 ) { + return (uiA64 == uiB64) || ! uiA0; + } else { + if ( ! ((uiA0 & uiB0) & UINT64_C( 0x8000000000000000 )) ) { + return ! softfloat_compareNonnormExtF80M( aSPtr, bSPtr ); + } + return false; + } + +} + +#endif + |