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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:49:04 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:49:04 +0000
commit16f504a9dca3fe3b70568f67b7d41241ae485288 (patch)
treec60f36ada0496ba928b7161059ba5ab1ab224f9d /src/libs/softfloat-3e/source/8086/s_propagateNaNF128M.c
parentInitial commit. (diff)
downloadvirtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.tar.xz
virtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.zip
Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libs/softfloat-3e/source/8086/s_propagateNaNF128M.c')
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+
+/*============================================================================
+
+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"
+
+/*----------------------------------------------------------------------------
+| Assuming at least one of the two 128-bit floating-point values pointed to by
+| `aWPtr' and `bWPtr' is a NaN, stores the combined NaN result at the location
+| pointed to by `zWPtr'. If either original floating-point value is a
+| signaling NaN, the invalid exception is raised. Each of `aWPtr', `bWPtr',
+| and `zWPtr' points to an array of four 32-bit elements that concatenate in
+| the platform's normal endian order to form a 128-bit floating-point value.
+*----------------------------------------------------------------------------*/
+void
+ softfloat_propagateNaNF128M(
+ const uint32_t *aWPtr, const uint32_t *bWPtr, uint32_t *zWPtr SOFTFLOAT_STATE_DECL_COMMA )
+{
+ bool isSigNaNA;
+ const uint32_t *ptr;
+ bool isSigNaNB;
+ uint32_t uiA96, uiB96, wordMagA, wordMagB;
+
+ isSigNaNA = f128M_isSignalingNaN( (const float128_t *) aWPtr );
+ ptr = aWPtr;
+ if ( ! bWPtr ) {
+ if ( isSigNaNA ) softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA );
+ goto copy;
+ }
+ isSigNaNB = f128M_isSignalingNaN( (const float128_t *) bWPtr );
+ if ( isSigNaNA | isSigNaNB ) {
+ softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA );
+ if ( isSigNaNA ) {
+ if ( isSigNaNB ) goto returnLargerUIMag;
+ if ( softfloat_isNaNF128M( bWPtr ) ) goto copyB;
+ goto copy;
+ } else {
+ if ( softfloat_isNaNF128M( aWPtr ) ) goto copy;
+ goto copyB;
+ }
+ }
+ returnLargerUIMag:
+ uiA96 = aWPtr[indexWordHi( 4 )];
+ uiB96 = bWPtr[indexWordHi( 4 )];
+ wordMagA = uiA96 & 0x7FFFFFFF;
+ wordMagB = uiB96 & 0x7FFFFFFF;
+ if ( wordMagA < wordMagB ) goto copyB;
+ if ( wordMagB < wordMagA ) goto copy;
+ wordMagA = aWPtr[indexWord( 4, 2 )];
+ wordMagB = bWPtr[indexWord( 4, 2 )];
+ if ( wordMagA < wordMagB ) goto copyB;
+ if ( wordMagB < wordMagA ) goto copy;
+ wordMagA = aWPtr[indexWord( 4, 1 )];
+ wordMagB = bWPtr[indexWord( 4, 1 )];
+ if ( wordMagA < wordMagB ) goto copyB;
+ if ( wordMagB < wordMagA ) goto copy;
+ wordMagA = aWPtr[indexWord( 4, 0 )];
+ wordMagB = bWPtr[indexWord( 4, 0 )];
+ if ( wordMagA < wordMagB ) goto copyB;
+ if ( wordMagB < wordMagA ) goto copy;
+ if ( uiA96 < uiB96 ) goto copy;
+ copyB:
+ ptr = bWPtr;
+ copy:
+ zWPtr[indexWordHi( 4 )] = ptr[indexWordHi( 4 )] | 0x00008000;
+ zWPtr[indexWord( 4, 2 )] = ptr[indexWord( 4, 2 )];
+ zWPtr[indexWord( 4, 1 )] = ptr[indexWord( 4, 1 )];
+ zWPtr[indexWord( 4, 0 )] = ptr[indexWord( 4, 0 )];
+
+}
+