1 //===-- lib/subsf3.c - Single-precision subtraction ---------------*- C -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements single-precision soft-float subtraction with the 11 // IEEE-754 default rounding (to nearest, ties to even). 12 // 13 //===----------------------------------------------------------------------===// 14 15 #define SINGLE_PRECISION 16 #include "fp_lib.h" 17 18 fp_t COMPILER_RT_ABI __addsf3(fp_t a, fp_t b); 19 20 ARM_EABI_FNALIAS(fsub, subsf3); 21 22 // Subtraction; flip the sign bit of b and add. 23 COMPILER_RT_ABI fp_t 24 __subsf3(fp_t a, fp_t b) { 25 return __addsf3(a, fromRep(toRep(b) ^ signBit)); 26 } 27 28 /* FIXME: rsub for ARM EABI */ 29
