arch/nds32/math-emu/fd2si.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (C) 2005-2019 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
   9 void fd2si(void *ft, void *fa)
  10 {
  11         int r;
  12
  13         FP_DECL_D(A);
  14         FP_DECL_EX;
  15
  16         FP_UNPACK_DP(A, fa);
  17
  18         if (A_c == FP_CLS_INF) {
  19                 *(int *)ft = (A_s == 0) ? 0x7fffffff : 0x80000000;
  20                 __FPU_FPCSR |= FP_EX_INVALID;
  21         } else if (A_c == FP_CLS_NAN) {
  22                 *(int *)ft = 0xffffffff;
  23                 __FPU_FPCSR |= FP_EX_INVALID;
  24         } else {
  25                 FP_TO_INT_ROUND_D(r, A, 32, 1);
  26                 __FPU_FPCSR |= FP_CUR_EXCEPTIONS;
  27                 *(int *)ft = r;
  28         }
  29
  30 }