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author | Andrew Waterman <andrew@sifive.com> | 2017-09-24 20:25:34 -0700 |
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committer | Andrew Waterman <andrew@sifive.com> | 2017-09-24 20:25:34 -0700 |
commit | bd85811c35ea38180d27440507fc222d585ef780 (patch) | |
tree | 214c6b615d7775f73da5ff9a94bd4a0a2772f9cf /softfloat/s_mul64ByShifted32To128.c | |
parent | b86f2a51f522f020ad0d90f598f4c501f41da232 (diff) | |
download | spike-bd85811c35ea38180d27440507fc222d585ef780.zip spike-bd85811c35ea38180d27440507fc222d585ef780.tar.gz spike-bd85811c35ea38180d27440507fc222d585ef780.tar.bz2 |
Update SoftFloat
Diffstat (limited to 'softfloat/s_mul64ByShifted32To128.c')
-rw-r--r-- | softfloat/s_mul64ByShifted32To128.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/softfloat/s_mul64ByShifted32To128.c b/softfloat/s_mul64ByShifted32To128.c new file mode 100644 index 0000000..f7e7104 --- /dev/null +++ b/softfloat/s_mul64ByShifted32To128.c @@ -0,0 +1,56 @@ + +/*============================================================================ + +This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic +Package, Release 3d, 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" + +#ifndef softfloat_mul64ByShifted32To128 + +struct uint128 softfloat_mul64ByShifted32To128( uint64_t a, uint32_t b ) +{ + uint_fast64_t mid; + struct uint128 z; + + mid = (uint_fast64_t) (uint32_t) a * b; + z.v0 = mid<<32; + z.v64 = (uint_fast64_t) (uint32_t) (a>>32) * b + (mid>>32); + return z; + +} + +#endif + |