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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
commit | f215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch) | |
tree | 6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/libs/softfloat-3e/source/extF80_to_ui32_r_minMag.c | |
parent | Initial commit. (diff) | |
download | virtualbox-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/extF80_to_ui32_r_minMag.c')
-rw-r--r-- | src/libs/softfloat-3e/source/extF80_to_ui32_r_minMag.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/libs/softfloat-3e/source/extF80_to_ui32_r_minMag.c b/src/libs/softfloat-3e/source/extF80_to_ui32_r_minMag.c new file mode 100644 index 00000000..19352d56 --- /dev/null +++ b/src/libs/softfloat-3e/source/extF80_to_ui32_r_minMag.c @@ -0,0 +1,88 @@ + +/*============================================================================ + +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 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" + +uint_fast32_t extF80_to_ui32_r_minMag( extFloat80_t a, bool exact SOFTFLOAT_STATE_DECL_COMMA ) +{ + union { struct extFloat80M s; extFloat80_t f; } uA; + uint_fast16_t uiA64; + int_fast32_t exp; + uint_fast64_t sig; + int_fast32_t shiftDist; + bool sign; + uint_fast32_t z; + + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + uA.f = a; + uiA64 = uA.s.signExp; + exp = expExtF80UI64( uiA64 ); + sig = uA.s.signif; + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + shiftDist = 0x403E - exp; + if ( 64 <= shiftDist ) { + if ( exact && (exp | sig) ) { + softfloat_exceptionFlags |= softfloat_flag_inexact; + } + return 0; + } + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + sign = signExtF80UI64( uiA64 ); + if ( sign || (shiftDist < 32) ) { + softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA ); + return + (exp == 0x7FFF) && (sig & UINT64_C( 0x7FFFFFFFFFFFFFFF )) + ? ui32_fromNaN + : sign ? ui32_fromNegOverflow : ui32_fromPosOverflow; + } + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + z = sig>>shiftDist; + if ( exact && ((uint_fast64_t) z<<shiftDist != sig) ) { + softfloat_exceptionFlags |= softfloat_flag_inexact; + } + return z; + +} + |