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Java example source code file (s_logb.c)
The s_logb.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. */ /* * double logb(x) * IEEE 754 logb. Included to pass IEEE test suite. Not recommend. * Use ilogb instead. */ #include "fdlibm.h" #ifdef __STDC__ double logb(double x) #else double logb(x) double x; #endif { int lx,ix; ix = (__HI(x))&0x7fffffff; /* high |x| */ lx = __LO(x); /* low x */ if((ix|lx)==0) return -1.0/fabs(x); if(ix>=0x7ff00000) return x*x; if((ix>>=20)==0) /* IEEE 754 logb */ return -1022.0; else return (double) (ix-1023); } Other Java examples (source code examples)Here is a short list of links related to this Java s_logb.c source code file: |
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