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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_i32.c
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
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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_i32.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, 2015, 2016, 2017 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
+
+int_fast32_t
+ f128M_to_i32( const float128_t *aPtr, uint_fast8_t roundingMode, bool exact SOFTFLOAT_STATE_DECL_COMMA )
+{
+
+ return f128_to_i32( *aPtr, roundingMode, exact SOFTFLOAT_STATE_ARG_COMMA );
+
+}
+
+#else
+
+int_fast32_t
+ f128M_to_i32( const float128_t *aPtr, uint_fast8_t roundingMode, bool exact SOFTFLOAT_STATE_DECL_COMMA )
+{
+ const uint32_t *aWPtr;
+ uint32_t uiA96;
+ bool sign;
+ int32_t exp;
+ uint64_t sig64;
+ int32_t shiftDist;
+
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ aWPtr = (const uint32_t *) aPtr;
+ uiA96 = aWPtr[indexWordHi( 4 )];
+ sign = signF128UI96( uiA96 );
+ exp = expF128UI96( uiA96 );
+ sig64 = (uint64_t) fracF128UI96( uiA96 )<<32 | aWPtr[indexWord( 4, 2 )];
+ if ( aWPtr[indexWord( 4, 1 )] | aWPtr[indexWord( 4, 0 )] ) sig64 |= 1;
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+#if (i32_fromNaN != i32_fromPosOverflow) || (i32_fromNaN != i32_fromNegOverflow)
+ if ( (exp == 0x7FFF) && sig64 ) {
+#if (i32_fromNaN == i32_fromPosOverflow)
+ sign = 0;
+#elif (i32_fromNaN == i32_fromNegOverflow)
+ sign = 1;
+#else
+ softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA );
+ return i32_fromNaN;
+#endif
+ }
+#endif
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( exp ) sig64 |= UINT64_C( 0x0001000000000000 );
+ shiftDist = 0x4023 - exp;
+ if ( 0 < shiftDist ) sig64 = softfloat_shiftRightJam64( sig64, shiftDist );
+ return softfloat_roundToI32( sign, sig64, roundingMode, exact SOFTFLOAT_STATE_ARG_COMMA );
+
+}
+
+#endif
+