1//===-- lib/subtf3.c - Quad-precision subtraction -----------------*- C -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file implements quad-precision soft-float subtraction. 10// 11//===----------------------------------------------------------------------===// 12 13#define QUAD_PRECISION 14#include "fp_lib.h" 15 16#if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT) 17COMPILER_RT_ABI fp_t __addtf3(fp_t a, fp_t b); 18 19// Subtraction; flip the sign bit of b and add. 20COMPILER_RT_ABI fp_t __subtf3(fp_t a, fp_t b) { 21 return __addtf3(a, fromRep(toRep(b) ^ signBit)); 22} 23 24#endif 25