| |
| /*============================================================================ |
| |
| 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" |
| |
| #ifndef softfloat_mul128To256M |
| |
| #define softfloat_mul128To256M softfloat_mul128To256M |
| #include "primitives.h" |
| |
| void |
| softfloat_mul128To256M( |
| uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0, uint64_t *zPtr ) |
| { |
| struct uint128 p0, p64, p128; |
| uint_fast64_t z64, z128, z192; |
| |
| p0 = softfloat_mul64To128( a0, b0 ); |
| zPtr[indexWord( 4, 0 )] = p0.v0; |
| p64 = softfloat_mul64To128( a64, b0 ); |
| z64 = p64.v0 + p0.v64; |
| z128 = p64.v64 + (z64 < p64.v0); |
| p128 = softfloat_mul64To128( a64, b64 ); |
| z128 += p128.v0; |
| z192 = p128.v64 + (z128 < p128.v0); |
| p64 = softfloat_mul64To128( a0, b64 ); |
| z64 += p64.v0; |
| zPtr[indexWord( 4, 1 )] = z64; |
| p64.v64 += (z64 < p64.v0); |
| z128 += p64.v64; |
| zPtr[indexWord( 4, 2 )] = z128; |
| zPtr[indexWord( 4, 3 )] = z192 + (z128 < p64.v64); |
| |
| } |
| |
| #endif |
| |