diff options
Diffstat (limited to 'tests/fp/berkeley-softfloat-3/source/extF80M_to_i32_r_minMag.c')
| -rw-r--r-- | tests/fp/berkeley-softfloat-3/source/extF80M_to_i32_r_minMag.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/tests/fp/berkeley-softfloat-3/source/extF80M_to_i32_r_minMag.c b/tests/fp/berkeley-softfloat-3/source/extF80M_to_i32_r_minMag.c new file mode 100644 index 000000000..9a803cc23 --- /dev/null +++ b/tests/fp/berkeley-softfloat-3/source/extF80M_to_i32_r_minMag.c @@ -0,0 +1,120 @@ + +/*============================================================================ + +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" + +#ifdef SOFTFLOAT_FAST_INT64 + +int_fast32_t extF80M_to_i32_r_minMag( const extFloat80_t *aPtr, bool exact ) +{ + + return extF80_to_i32_r_minMag( *aPtr, exact ); + +} + +#else + +int_fast32_t extF80M_to_i32_r_minMag( const extFloat80_t *aPtr, bool exact ) +{ + const struct extFloat80M *aSPtr; + uint_fast16_t uiA64; + int32_t exp; + uint64_t sig; + int32_t shiftDist; + bool sign, raiseInexact; + int32_t z; + uint64_t shiftedSig; + uint32_t absZ; + union { uint32_t ui; int32_t i; } u; + + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + aSPtr = (const struct extFloat80M *) aPtr; + uiA64 = aSPtr->signExp; + exp = expExtF80UI64( uiA64 ); + sig = aSPtr->signif; + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + if ( ! sig && (exp != 0x7FFF) ) return 0; + shiftDist = 0x403E - exp; + if ( 64 <= shiftDist ) { + raiseInexact = exact; + z = 0; + } else { + sign = signExtF80UI64( uiA64 ); + raiseInexact = false; + if ( shiftDist < 0 ) { + if ( sig>>32 || (shiftDist <= -31) ) goto invalid; + shiftedSig = (uint64_t) (uint32_t) sig<<-shiftDist; + if ( shiftedSig>>32 ) goto invalid; + absZ = shiftedSig; + } else { + shiftedSig = sig; + if ( shiftDist ) shiftedSig >>= shiftDist; + if ( shiftedSig>>32 ) goto invalid; + absZ = shiftedSig; + if ( exact && shiftDist ) { + raiseInexact = ((uint64_t) absZ<<shiftDist != sig); + } + } + if ( sign ) { + if ( 0x80000000 < absZ ) goto invalid; + u.ui = -absZ; + z = u.i; + } else { + if ( 0x80000000 <= absZ ) goto invalid; + z = absZ; + } + } + if ( raiseInexact ) softfloat_exceptionFlags |= softfloat_flag_inexact; + return z; + /*------------------------------------------------------------------------ + *------------------------------------------------------------------------*/ + invalid: + softfloat_raiseFlags( softfloat_flag_invalid ); + return + (exp == 0x7FFF) && (sig & UINT64_C( 0x7FFFFFFFFFFFFFFF )) ? i32_fromNaN + : sign ? i32_fromNegOverflow : i32_fromPosOverflow; + +} + +#endif + |