mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-21 05:41:43 +03:00
113 lines
4.4 KiB
C
113 lines
4.4 KiB
C
|
|
/*============================================================================
|
|
|
|
This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
|
|
Package, Release 3c, 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_le_quiet( const extFloat80_t *aPtr, const extFloat80_t *bPtr )
|
|
{
|
|
|
|
return extF80_le_quiet( *aPtr, *bPtr );
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
bool extF80M_le_quiet( 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;
|
|
bool signA, ltMags;
|
|
|
|
/*------------------------------------------------------------------------
|
|
*------------------------------------------------------------------------*/
|
|
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;
|
|
}
|
|
/*------------------------------------------------------------------------
|
|
*------------------------------------------------------------------------*/
|
|
signA = signExtF80UI64( uiA64 );
|
|
if ( (uiA64 ^ uiB64) & 0x8000 ) {
|
|
/*--------------------------------------------------------------------
|
|
| Signs are different.
|
|
*--------------------------------------------------------------------*/
|
|
return signA || ! (uiA0 | uiB0);
|
|
} else {
|
|
/*--------------------------------------------------------------------
|
|
| Signs are the same.
|
|
*--------------------------------------------------------------------*/
|
|
if ( ! ((uiA0 & uiB0) & UINT64_C( 0x8000000000000000 )) ) {
|
|
return (softfloat_compareNonnormExtF80M( aSPtr, bSPtr ) <= 0);
|
|
}
|
|
if ( uiA64 == uiB64 ) {
|
|
if ( uiA0 == uiB0 ) return true;
|
|
ltMags = (uiA0 < uiB0);
|
|
} else {
|
|
ltMags = (uiA64 < uiB64);
|
|
}
|
|
return signA ^ ltMags;
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|