```
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "jni.h"
27 #include "runtime/interfaceSupport.hpp"
28 #include "runtime/sharedRuntime.hpp"
29 #include "runtime/sharedRuntimeMath.hpp"
30
31 // This file contains copies of the fdlibm routines used by
32 // StrictMath. It turns out that it is almost always required to use
33 // these runtime routines; the Intel CPU doesn't meet the Java
34 // specification for sin/cos outside a certain limited argument range,
35 // and the SPARC CPU doesn't appear to have sin/cos instructions. It
36 // also turns out that avoiding the indirect call through function
37 // pointer out to libjava.so in SharedRuntime speeds these routines up
38 // by roughly 15% on both Win32/x86 and Solaris/SPARC.
39
40 /*
41 * __kernel_rem_pio2(x,y,e0,nx,prec,ipio2)
42 * double x[],y[]; int e0,nx,prec; int ipio2[];
43 *
44 * __kernel_rem_pio2 return the last three digits of N with
45 * y = x - N*pi/2
46 * so that |y| < pi/2.
47 *
``` | ```
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "jni.h"
27 #include "runtime/interfaceSupport.inline.hpp"
28 #include "runtime/sharedRuntime.hpp"
29 #include "runtime/sharedRuntimeMath.hpp"
30
31 // This file contains copies of the fdlibm routines used by
32 // StrictMath. It turns out that it is almost always required to use
33 // these runtime routines; the Intel CPU doesn't meet the Java
34 // specification for sin/cos outside a certain limited argument range,
35 // and the SPARC CPU doesn't appear to have sin/cos instructions. It
36 // also turns out that avoiding the indirect call through function
37 // pointer out to libjava.so in SharedRuntime speeds these routines up
38 // by roughly 15% on both Win32/x86 and Solaris/SPARC.
39
40 /*
41 * __kernel_rem_pio2(x,y,e0,nx,prec,ipio2)
42 * double x[],y[]; int e0,nx,prec; int ipio2[];
43 *
44 * __kernel_rem_pio2 return the last three digits of N with
45 * y = x - N*pi/2
46 * so that |y| < pi/2.
47 *
``` |