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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/libs/softfloat-3e/source/f128M_to_extF80M.c
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libs/softfloat-3e/source/f128M_to_extF80M.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"
+
+#ifdef SOFTFLOAT_FAST_INT64
+
+void f128M_to_extF80M( const float128_t *aPtr, extFloat80_t *zPtr SOFTFLOAT_STATE_DECL_COMMA )
+{
+
+ *zPtr = f128_to_extF80( *aPtr SOFTFLOAT_STATE_ARG_COMMA );
+
+}
+
+#else
+
+void f128M_to_extF80M( const float128_t *aPtr, extFloat80_t *zPtr SOFTFLOAT_STATE_DECL_COMMA )
+{
+ const uint32_t *aWPtr;
+ struct extFloat80M *zSPtr;
+ uint32_t uiA96;
+ bool sign;
+ int32_t exp;
+ struct commonNaN commonNaN;
+ uint32_t sig[4];
+
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ aWPtr = (const uint32_t *) aPtr;
+ zSPtr = (struct extFloat80M *) zPtr;
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ uiA96 = aWPtr[indexWordHi( 4 )];
+ sign = signF128UI96( uiA96 );
+ exp = expF128UI96( uiA96 );
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( exp == 0x7FFF ) {
+ if ( softfloat_isNaNF128M( aWPtr ) ) {
+ softfloat_f128MToCommonNaN( aWPtr, &commonNaN SOFTFLOAT_STATE_ARG_COMMA );
+ softfloat_commonNaNToExtF80M( &commonNaN, zSPtr );
+ return;
+ }
+ zSPtr->signExp = packToExtF80UI64( sign, 0x7FFF );
+ zSPtr->signif = UINT64_C( 0x8000000000000000 );
+ return;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ exp = softfloat_shiftNormSigF128M( aWPtr, 15, sig );
+ if ( exp == -128 ) {
+ zSPtr->signExp = packToExtF80UI64( sign, 0 );
+ zSPtr->signif = 0;
+ return;
+ }
+ if ( sig[indexWord( 4, 0 )] ) sig[indexWord( 4, 1 )] |= 1;
+ softfloat_roundPackMToExtF80M(
+ sign, exp, &sig[indexMultiwordHi( 4, 3 )], 80, zSPtr SOFTFLOAT_STATE_ARG_COMMA );
+
+}
+
+#endif
+