1*0a6a1f1dSLionel Sambuc //===-- lib/subsf3.c - Single-precision subtraction ---------------*- C -*-===// 2*0a6a1f1dSLionel Sambuc // 3*0a6a1f1dSLionel Sambuc // The LLVM Compiler Infrastructure 4*0a6a1f1dSLionel Sambuc // 5*0a6a1f1dSLionel Sambuc // This file is dual licensed under the MIT and the University of Illinois Open 6*0a6a1f1dSLionel Sambuc // Source Licenses. See LICENSE.TXT for details. 7*0a6a1f1dSLionel Sambuc // 8*0a6a1f1dSLionel Sambuc //===----------------------------------------------------------------------===// 9*0a6a1f1dSLionel Sambuc // 10*0a6a1f1dSLionel Sambuc // This file implements single-precision soft-float subtraction with the 11*0a6a1f1dSLionel Sambuc // IEEE-754 default rounding (to nearest, ties to even). 12*0a6a1f1dSLionel Sambuc // 13*0a6a1f1dSLionel Sambuc //===----------------------------------------------------------------------===// 14*0a6a1f1dSLionel Sambuc 15*0a6a1f1dSLionel Sambuc #define SINGLE_PRECISION 16*0a6a1f1dSLionel Sambuc #include "fp_lib.h" 17*0a6a1f1dSLionel Sambuc ARM_EABI_FNALIAS(fsub,subsf3)18*0a6a1f1dSLionel SambucARM_EABI_FNALIAS(fsub, subsf3) 19*0a6a1f1dSLionel Sambuc 20*0a6a1f1dSLionel Sambuc // Subtraction; flip the sign bit of b and add. 21*0a6a1f1dSLionel Sambuc COMPILER_RT_ABI fp_t 22*0a6a1f1dSLionel Sambuc __subsf3(fp_t a, fp_t b) { 23*0a6a1f1dSLionel Sambuc return __addsf3(a, fromRep(toRep(b) ^ signBit)); 24*0a6a1f1dSLionel Sambuc } 25*0a6a1f1dSLionel Sambuc 26*0a6a1f1dSLionel Sambuc /* FIXME: rsub for ARM EABI */ 27