lib/libcompiler_rt/subsf3.c


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//===-- lib/subsf3.c - Single-precision subtraction ---------------*- C -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements single-precision soft-float subtraction with the
// IEEE-754 default rounding (to nearest, ties to even).
//
//===----------------------------------------------------------------------===//

#define SINGLE_PRECISION
#include "fp_lib.h"

ARM_EABI_FNALIAS(fsub, subsf3)

// Subtraction; flip the sign bit of b and add.
COMPILER_RT_ABI fp_t
__subsf3(fp_t a, fp_t b) {
    return __addsf3(a, fromRep(toRep(b) ^ signBit));
}