| |
| /*============================================================================ |
| |
| This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic |
| Package, Release 3, by John R. Hauser. |
| |
| Copyright 2011, 2012, 2013, 2014, 2015 The Regents of the University of |
| California (Regents). All Rights Reserved. Redistribution and use in source |
| and binary forms, with or without modification, are permitted provided that |
| the following conditions are met: |
| |
| Redistributions of source code must retain the above copyright notice, |
| this list of conditions, and the following two paragraphs of disclaimer. |
| Redistributions in binary form must reproduce the above copyright notice, |
| this list of conditions, and the following two paragraphs of disclaimer in the |
| documentation and/or other materials provided with the distribution. Neither |
| the name of the Regents nor the names of its contributors may be used to |
| endorse or promote products derived from this software without specific prior |
| written permission. |
| |
| IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, |
| SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING |
| OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS |
| BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED |
| TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED |
| HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE |
| MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| |
| =============================================================================*/ |
| |
| #include <stdint.h> |
| #include "platform.h" |
| #include "primitiveTypes.h" |
| #include "specialize.h" |
| #include "softfloat.h" |
| |
| /*---------------------------------------------------------------------------- |
| | Assuming at least one of the two 80-bit extended floating-point values |
| | pointed to by `aSPtr' and `bSPtr' is a NaN, stores the combined NaN result |
| | at the location pointed to by `zSPtr'. If either original floating-point |
| | value is a signaling NaN, the invalid exception is raised. |
| *----------------------------------------------------------------------------*/ |
| void |
| softfloat_propagateNaNExtF80M( |
| const struct extFloat80M *aSPtr, |
| const struct extFloat80M *bSPtr, |
| struct extFloat80M *zSPtr |
| ) |
| { |
| uint_fast16_t ui64; |
| uint_fast64_t ui0; |
| |
| ui64 = aSPtr->signExp; |
| ui0 = aSPtr->signif; |
| if ( |
| softfloat_isSigNaNExtF80UI( ui64, ui0 ) |
| || (bSPtr |
| && (ui64 = bSPtr->signExp, |
| ui0 = bSPtr->signif, |
| softfloat_isSigNaNExtF80UI( ui64, ui0 ))) |
| ) { |
| softfloat_raiseFlags( softfloat_flag_invalid ); |
| } |
| zSPtr->signExp = defaultNaNExtF80UI64; |
| zSPtr->signif = defaultNaNExtF80UI0; |
| |
| } |
| |