1 2/*============================================================================ 3 4This C header file is part of the SoftFloat IEEE Floating-Point Arithmetic 5Package, Release 3e, by John R. Hauser. 6 7Copyright 2017 The Regents of the University of California. All rights 8reserved. 9 10Redistribution and use in source and binary forms, with or without 11modification, are permitted provided that the following conditions are met: 12 13 1. Redistributions of source code must retain the above copyright notice, 14 this list of conditions, and the following disclaimer. 15 16 2. Redistributions in binary form must reproduce the above copyright notice, 17 this list of conditions, and the following disclaimer in the documentation 18 and/or other materials provided with the distribution. 19 20 3. Neither the name of the University nor the names of its contributors may 21 be used to endorse or promote products derived from this software without 22 specific prior written permission. 23 24THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY 25EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 26WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE 27DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY 28DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 31ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 35=============================================================================*/ 36 37#ifndef opts_GCC_h 38#define opts_GCC_h 1 39 40#ifdef INLINE 41 42#include <stdint.h> 43#include "primitiveTypes.h" 44 45#ifdef SOFTFLOAT_BUILTIN_CLZ 46 47INLINE uint_fast8_t softfloat_countLeadingZeros16( uint16_t a ) 48 { return a ? __builtin_clz( a ) - 16 : 16; } 49#define softfloat_countLeadingZeros16 softfloat_countLeadingZeros16 50 51INLINE uint_fast8_t softfloat_countLeadingZeros32( uint32_t a ) 52 { return a ? __builtin_clz( a ) : 32; } 53#define softfloat_countLeadingZeros32 softfloat_countLeadingZeros32 54 55INLINE uint_fast8_t softfloat_countLeadingZeros64( uint64_t a ) 56 { return a ? __builtin_clzll( a ) : 64; } 57#define softfloat_countLeadingZeros64 softfloat_countLeadingZeros64 58 59#endif 60 61#ifdef SOFTFLOAT_INTRINSIC_INT128 62 63INLINE struct uint128 softfloat_mul64ByShifted32To128( uint64_t a, uint32_t b ) 64{ 65 union { unsigned __int128 ui; struct uint128 s; } uZ; 66 uZ.ui = (unsigned __int128) a * ((uint_fast64_t) b<<32); 67 return uZ.s; 68} 69#define softfloat_mul64ByShifted32To128 softfloat_mul64ByShifted32To128 70 71INLINE struct uint128 softfloat_mul64To128( uint64_t a, uint64_t b ) 72{ 73 union { unsigned __int128 ui; struct uint128 s; } uZ; 74 uZ.ui = (unsigned __int128) a * b; 75 return uZ.s; 76} 77#define softfloat_mul64To128 softfloat_mul64To128 78 79INLINE 80struct uint128 softfloat_mul128By32( uint64_t a64, uint64_t a0, uint32_t b ) 81{ 82 union { unsigned __int128 ui; struct uint128 s; } uZ; 83 uZ.ui = ((unsigned __int128) a64<<64 | a0) * b; 84 return uZ.s; 85} 86#define softfloat_mul128By32 softfloat_mul128By32 87 88INLINE 89void 90 softfloat_mul128To256M( 91 uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0, uint64_t *zPtr ) 92{ 93 unsigned __int128 z0, mid1, mid, z128; 94 z0 = (unsigned __int128) a0 * b0; 95 mid1 = (unsigned __int128) a64 * b0; 96 mid = mid1 + (unsigned __int128) a0 * b64; 97 z128 = (unsigned __int128) a64 * b64; 98 z128 += (unsigned __int128) (mid < mid1)<<64 | mid>>64; 99 mid <<= 64; 100 z0 += mid; 101 z128 += (z0 < mid); 102 zPtr[indexWord( 4, 0 )] = z0; 103 zPtr[indexWord( 4, 1 )] = z0>>64; 104 zPtr[indexWord( 4, 2 )] = z128; 105 zPtr[indexWord( 4, 3 )] = z128>>64; 106} 107#define softfloat_mul128To256M softfloat_mul128To256M 108 109#endif 110 111#endif 112 113#endif 114 115