LXR linux/arch/nds32/math-emu/fsubd.c

   1// SPDX-License-Identifier: GPL-2.0
   2// Copyright (C) 2005-2018 Andes Technology Corporation
   3#include <linux/uaccess.h>
   4
   5#include <asm/sfp-machine.h>
   6#include <math-emu/soft-fp.h>
   7#include <math-emu/double.h>
   8void fsubd(void *ft, void *fa, void *fb)
   9{
  10
  11        FP_DECL_D(A);
  12        FP_DECL_D(B);
  13        FP_DECL_D(R);
  14        FP_DECL_EX;
  15
  16        FP_UNPACK_DP(A, fa);
  17        FP_UNPACK_DP(B, fb);
  18
  19        if (B_c != FP_CLS_NAN)
  20                B_s ^= 1;
  21
  22        FP_ADD_D(R, A, B);
  23
  24        FP_PACK_DP(ft, R);
  25
  26        __FPU_FPCSR |= FP_CUR_EXCEPTIONS;
  27}
  28