diff options
Diffstat (limited to 'softfloat/f64_sub.c')
| -rw-r--r--[-rwxr-xr-x] | softfloat/f64_sub.c | 53 |
1 files changed, 48 insertions, 5 deletions
diff --git a/softfloat/f64_sub.c b/softfloat/f64_sub.c index 46aaead..74158be 100755..100644 --- a/softfloat/f64_sub.c +++ b/softfloat/f64_sub.c @@ -1,5 +1,38 @@ -// See LICENSE.SoftFloat for license details. +/*============================================================================ + +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 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 <stdbool.h> #include <stdint.h> @@ -15,7 +48,9 @@ float64_t f64_sub( float64_t a, float64_t b ) union ui64_f64 uB; uint_fast64_t uiB; bool signB; - float64_t ( *magsRoutine )( uint_fast64_t, uint_fast64_t, bool ); +#if ! defined INLINE_LEVEL || (INLINE_LEVEL < 2) + float64_t (*magsFuncPtr)( uint_fast64_t, uint_fast64_t, bool ); +#endif uA.f = a; uiA = uA.ui; @@ -23,9 +58,17 @@ float64_t f64_sub( float64_t a, float64_t b ) uB.f = b; uiB = uB.ui; signB = signF64UI( uiB ); - magsRoutine = - ( signA == signB ) ? softfloat_subMagsF64 : softfloat_addMagsF64; - return magsRoutine( uiA, uiB, signA ); +#if defined INLINE_LEVEL && (2 <= INLINE_LEVEL) + if ( signA == signB ) { + return softfloat_subMagsF64( uiA, uiB, signA ); + } else { + return softfloat_addMagsF64( uiA, uiB, signA ); + } +#else + magsFuncPtr = + (signA == signB) ? softfloat_subMagsF64 : softfloat_addMagsF64; + return (*magsFuncPtr)( uiA, uiB, signA ); +#endif } |