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>
   8 void 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 }