1*7c3d14c8STreehugger Robot //===-- lib/subsf3.c - Single-precision subtraction ---------------*- C -*-===// 2*7c3d14c8STreehugger Robot // 3*7c3d14c8STreehugger Robot // The LLVM Compiler Infrastructure 4*7c3d14c8STreehugger Robot // 5*7c3d14c8STreehugger Robot // This file is dual licensed under the MIT and the University of Illinois Open 6*7c3d14c8STreehugger Robot // Source Licenses. See LICENSE.TXT for details. 7*7c3d14c8STreehugger Robot // 8*7c3d14c8STreehugger Robot //===----------------------------------------------------------------------===// 9*7c3d14c8STreehugger Robot // 10*7c3d14c8STreehugger Robot // This file implements single-precision soft-float subtraction with the 11*7c3d14c8STreehugger Robot // IEEE-754 default rounding (to nearest, ties to even). 12*7c3d14c8STreehugger Robot // 13*7c3d14c8STreehugger Robot //===----------------------------------------------------------------------===// 14*7c3d14c8STreehugger Robot 15*7c3d14c8STreehugger Robot #define SINGLE_PRECISION 16*7c3d14c8STreehugger Robot #include "fp_lib.h" 17*7c3d14c8STreehugger Robot ARM_EABI_FNALIAS(fsub,subsf3)18*7c3d14c8STreehugger RobotARM_EABI_FNALIAS(fsub, subsf3) 19*7c3d14c8STreehugger Robot 20*7c3d14c8STreehugger Robot // Subtraction; flip the sign bit of b and add. 21*7c3d14c8STreehugger Robot COMPILER_RT_ABI fp_t 22*7c3d14c8STreehugger Robot __subsf3(fp_t a, fp_t b) { 23*7c3d14c8STreehugger Robot return __addsf3(a, fromRep(toRep(b) ^ signBit)); 24*7c3d14c8STreehugger Robot } 25*7c3d14c8STreehugger Robot 26