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Java example source code file (s_frexp.c)
The s_frexp.c Java example source code/* * Copyright (c) 1998, 2001, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * for non-zero x * x = frexp(arg,&exp); * return a double fp quantity x such that 0.5 <= |x| <1.0 * and the corresponding binary exponent "exp". That is * arg = x*2^exp. * If arg is inf, 0.0, or NaN, then frexp(arg,&exp) returns arg * with *exp=0. */ #include "fdlibm.h" #ifdef __STDC__ static const double #else static double #endif two54 = 1.80143985094819840000e+16; /* 0x43500000, 0x00000000 */ #ifdef __STDC__ double frexp(double x, int *eptr) #else double frexp(x, eptr) double x; int *eptr; #endif { int hx, ix, lx; hx = __HI(x); ix = 0x7fffffff&hx; lx = __LO(x); *eptr = 0; if(ix>=0x7ff00000||((ix|lx)==0)) return x; /* 0,inf,nan */ if (ix<0x00100000) { /* subnormal */ x *= two54; hx = __HI(x); ix = hx&0x7fffffff; *eptr = -54; } *eptr += (ix>>20)-1022; hx = (hx&0x800fffff)|0x3fe00000; __HI(x) = hx; return x; } Other Java examples (source code examples)Here is a short list of links related to this Java s_frexp.c source code file: |
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