| |
| /* |
| * Copyright 1998-2001 Sun Microsystems, Inc. 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. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| /* |
| * wrapper sqrt(x) |
| */ |
| |
| #include "fdlibm.h" |
| |
| #ifdef __STDC__ |
| double sqrt(double x) /* wrapper sqrt */ |
| #else |
| double sqrt(x) /* wrapper sqrt */ |
| double x; |
| #endif |
| { |
| #ifdef _IEEE_LIBM |
| return __ieee754_sqrt(x); |
| #else |
| double z; |
| z = __ieee754_sqrt(x); |
| if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; |
| if(x<0.0) { |
| return __kernel_standard(x,x,26); /* sqrt(negative) */ |
| } else |
| return z; |
| #endif |
| } |