зеркало из https://github.com/mono/ikvm-fork.git
71 строка
2.0 KiB
C#
71 строка
2.0 KiB
C#
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/*
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* Copyright (c) 1998, 2002, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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using System;
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static partial class fdlibm
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{
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static int __HI(double x)
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{
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return (int)(BitConverter.DoubleToInt64Bits(x) >> 32);
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}
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static int __LO(double x)
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{
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return (int)BitConverter.DoubleToInt64Bits(x);
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}
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static double __HI(double x, int i)
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{
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long l = BitConverter.DoubleToInt64Bits(x) & 0xFFFFFFFFL;
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long h = (long)i << 32;
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return BitConverter.Int64BitsToDouble(l | h);
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}
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static double __LO(double x, int i)
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{
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long h = BitConverter.DoubleToInt64Bits(x) & ~0xFFFFFFFFL;
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return BitConverter.Int64BitsToDouble(h | (uint)i);
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}
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static double fabs(double d)
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{
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return Math.Abs(d);
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}
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static double sqrt(double d)
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{
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return Math.Sqrt(d);
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}
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static double copysign(double x, double y)
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{
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x = __HI(x, (__HI(x) & 0x7fffffff) | (__HI(y) & unchecked((int)0x80000000)));
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return x;
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}
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}
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