diff options
Diffstat (limited to 'softfloat/s_propagateNaNExtF80M.c')
-rw-r--r-- | softfloat/s_propagateNaNExtF80M.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/softfloat/s_propagateNaNExtF80M.c b/softfloat/s_propagateNaNExtF80M.c new file mode 100644 index 0000000..8adc62e --- /dev/null +++ b/softfloat/s_propagateNaNExtF80M.c @@ -0,0 +1,74 @@ + +/*============================================================================ + +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 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 <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; + +} + |