diff options
Diffstat (limited to 'softfloat/s_sub128.c')
-rw-r--r--[-rwxr-xr-x] | softfloat/s_sub128.c | 74 |
1 files changed, 55 insertions, 19 deletions
diff --git a/softfloat/s_sub128.c b/softfloat/s_sub128.c index 31ef9f3..4691aec 100755..100644 --- a/softfloat/s_sub128.c +++ b/softfloat/s_sub128.c @@ -1,19 +1,55 @@ -// See LICENSE.SoftFloat for license details. - -
-#include <stdint.h>
-#include "platform.h"
-#include "primitives.h"
-
-struct uint128
- softfloat_sub128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )
-{
- struct uint128 z;
-
- z.v0 = a0 - b0;
- z.v64 = a64 - b64;
- z.v64 -= ( a0 < b0 );
- return z;
-
-}
-
+ +/*============================================================================ + +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" + +#ifndef softfloat_sub128 + +struct uint128 + softfloat_sub128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 ) +{ + struct uint128 z; + + z.v0 = a0 - b0; + z.v64 = a64 - b64 - (a0 < b0); + return z; + +} + +#endif + |