gem5 v24.0.0.0
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fenv.cc
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1/*
2 * Copyright 2021 Google Inc.
3 * Copyright (c) 2007 The Regents of The University of Michigan
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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28 */
29
30#include "base/fenv.hh"
31
32#include <fenv.h>
33
34#include <cstdlib>
35
36namespace gem5
37{
38
39static const int roundOps[] =
40 { FE_DOWNWARD, FE_TONEAREST, FE_TOWARDZERO, FE_UPWARD };
41
42void setFpRound(RoundingMode rm) { fesetround(roundOps[(int)rm]); }
43
46{
47 int rm = fegetround();
48 for (int x = 0; x < 4; x++)
49 if (roundOps[x] == rm)
50 return (RoundingMode)x;
51 abort();
52}
53
54} // namespace gem5
Bitfield< 3, 0 > rm
Definition types.hh:118
Bitfield< 3 > x
Definition pagetable.hh:73
Copyright (c) 2024 - Pranith Kumar Copyright (c) 2020 Inria All rights reserved.
Definition binary32.hh:36
RoundingMode
Definition fenv.hh:38
void setFpRound(RoundingMode rm)
Definition fenv.cc:42
static const int roundOps[]
Definition fenv.cc:39
RoundingMode getFpRound()
Definition fenv.cc:45

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