10b57cec5SDimitry Andric //===-- lib/subtf3.c - Quad-precision subtraction -----------------*- C -*-===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric // 968d75effSDimitry Andric // This file implements quad-precision soft-float subtraction. 100b57cec5SDimitry Andric // 110b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 120b57cec5SDimitry Andric 130b57cec5SDimitry Andric #define QUAD_PRECISION 140b57cec5SDimitry Andric #include "fp_lib.h" 150b57cec5SDimitry Andric 16*06c3fb27SDimitry Andric #if defined(CRT_HAS_TF_MODE) 170b57cec5SDimitry Andric COMPILER_RT_ABI fp_t __addtf3(fp_t a, fp_t b); 180b57cec5SDimitry Andric 190b57cec5SDimitry Andric // Subtraction; flip the sign bit of b and add. __subtf3(fp_t a,fp_t b)200b57cec5SDimitry AndricCOMPILER_RT_ABI fp_t __subtf3(fp_t a, fp_t b) { 210b57cec5SDimitry Andric return __addtf3(a, fromRep(toRep(b) ^ signBit)); 220b57cec5SDimitry Andric } 230b57cec5SDimitry Andric 240b57cec5SDimitry Andric #endif 25