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| 2 | /*============================================================================
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| 3 |
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| 4 | This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
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| 5 | Package, Release 3e, by John R. Hauser.
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| 6 |
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| 7 | Copyright 2011, 2012, 2013, 2014, 2015 The Regents of the University of
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| 8 | California. All rights reserved.
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| 9 |
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| 10 | Redistribution and use in source and binary forms, with or without
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| 11 | modification, are permitted provided that the following conditions are met:
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| 12 |
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| 13 | 1. Redistributions of source code must retain the above copyright notice,
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| 14 | this list of conditions, and the following disclaimer.
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| 15 |
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| 16 | 2. Redistributions in binary form must reproduce the above copyright notice,
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| 17 | this list of conditions, and the following disclaimer in the documentation
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| 18 | and/or other materials provided with the distribution.
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| 19 |
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| 20 | 3. Neither the name of the University nor the names of its contributors may
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| 21 | be used to endorse or promote products derived from this software without
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| 22 | specific prior written permission.
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| 23 |
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| 24 | THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
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| 25 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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| 26 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
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| 27 | DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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| 28 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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| 29 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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| 30 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 31 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 32 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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| 33 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 34 |
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| 35 | =============================================================================*/
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| 36 |
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| 37 | #include <stdint.h>
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| 38 | #include "platform.h"
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| 39 |
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| 40 | #ifndef softfloat_mul128To256M
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| 41 |
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| 42 | #define softfloat_mul128To256M softfloat_mul128To256M
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| 43 | #include "primitives.h"
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| 44 |
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| 45 | void
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| 46 | softfloat_mul128To256M(
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| 47 | uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0, uint64_t *zPtr )
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| 48 | {
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| 49 | struct uint128 p0, p64, p128;
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| 50 | uint_fast64_t z64, z128, z192;
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| 51 |
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| 52 | p0 = softfloat_mul64To128( a0, b0 );
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| 53 | zPtr[indexWord( 4, 0 )] = p0.v0;
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| 54 | p64 = softfloat_mul64To128( a64, b0 );
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| 55 | z64 = p64.v0 + p0.v64;
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| 56 | z128 = p64.v64 + (z64 < p64.v0);
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| 57 | p128 = softfloat_mul64To128( a64, b64 );
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| 58 | z128 += p128.v0;
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| 59 | z192 = p128.v64 + (z128 < p128.v0);
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| 60 | p64 = softfloat_mul64To128( a0, b64 );
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| 61 | z64 += p64.v0;
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| 62 | zPtr[indexWord( 4, 1 )] = z64;
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| 63 | p64.v64 += (z64 < p64.v0);
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| 64 | z128 += p64.v64;
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| 65 | zPtr[indexWord( 4, 2 )] = z128;
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| 66 | zPtr[indexWord( 4, 3 )] = z192 + (z128 < p64.v64);
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| 67 |
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| 68 | }
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| 69 |
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| 70 | #endif
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| 71 |
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