1 //===-- lib/subsf3.c - Single-precision subtraction ---------------*- C -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file implements single-precision soft-float subtraction.
11 //===----------------------------------------------------------------------===//
13 #define SINGLE_PRECISION
16 // Subtraction; flip the sign bit of b and add.
17 COMPILER_RT_ABI fp_t __subsf3(fp_t a, fp_t b) {
18 return __addsf3(a, fromRep(toRep(b) ^ signBit));
21 #if defined(__ARM_EABI__)
22 #if defined(COMPILER_RT_ARMHF_TARGET)
23 AEABI_RTABI fp_t __aeabi_fsub(fp_t a, fp_t b) { return __subsf3(a, b); }
25 COMPILER_RT_ALIAS(__subsf3, __aeabi_fsub)