LXR linux/arch/nds32/math-emu/fs2siz.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/single.h>
   8
   9void fs2si_z(void *ft, void *fa)
  10{
  11        int r;
  12
  13        FP_DECL_S(A);
  14        FP_DECL_EX;
  15
  16        FP_UNPACK_SP(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_S(r, A, 32, 1);
  26                __FPU_FPCSR |= FP_CUR_EXCEPTIONS;
  27                *(int *)ft = r;
  28        }
  29}
  30