1*190e92d8Sjoerg //===-- lib/subtf3.c - Quad-precision subtraction -----------------*- C -*-===// 2*190e92d8Sjoerg // 3*190e92d8Sjoerg // The LLVM Compiler Infrastructure 4*190e92d8Sjoerg // 5*190e92d8Sjoerg // This file is dual licensed under the MIT and the University of Illinois Open 6*190e92d8Sjoerg // Source Licenses. See LICENSE.TXT for details. 7*190e92d8Sjoerg // 8*190e92d8Sjoerg //===----------------------------------------------------------------------===// 9*190e92d8Sjoerg // 10*190e92d8Sjoerg // This file implements quad-precision soft-float subtraction with the 11*190e92d8Sjoerg // IEEE-754 default rounding (to nearest, ties to even). 12*190e92d8Sjoerg // 13*190e92d8Sjoerg //===----------------------------------------------------------------------===// 14*190e92d8Sjoerg 15*190e92d8Sjoerg #define QUAD_PRECISION 16*190e92d8Sjoerg #include "fp_lib.h" 17*190e92d8Sjoerg 18*190e92d8Sjoerg #if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT) 19*190e92d8Sjoerg COMPILER_RT_ABI fp_t __addtf3(fp_t a, fp_t b); 20*190e92d8Sjoerg 21*190e92d8Sjoerg // Subtraction; flip the sign bit of b and add. 22*190e92d8Sjoerg COMPILER_RT_ABI fp_t __subtf3(fp_t a,fp_t b)23*190e92d8Sjoerg__subtf3(fp_t a, fp_t b) { 24*190e92d8Sjoerg return __addtf3(a, fromRep(toRep(b) ^ signBit)); 25*190e92d8Sjoerg } 26*190e92d8Sjoerg 27*190e92d8Sjoerg #endif 28