#103888#

1 files changed, 236 insertions, 0 deletions

diff --git a/sal/inc/sal/mathconf.h b/sal/inc/sal/mathconf.h
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+/*************************************************************************
+ *
+ *  $RCSfile: mathconf.h,v $
+ *
+ *  $Revision: 1.1 $
+ *
+ *  last change: $Author: sb $ $Date: 2002-11-06 15:48:48 $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 by Sun Microsystems, Inc.
+ *  901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source License Version 1.1 (the "License"); You may not use this file
+ *  except in compliance with the License. You may obtain a copy of the
+ *  License at http://www.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2002 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+#if !defined INCLUDED_SAL_MATHCONF_H
+#define INCLUDED_SAL_MATHCONF_H
+
+#include "osl/endian.h"
+
+#include <float.h>
+#include <limits.h>
+
+#if defined SOLARIS
+#include <ieeefp.h>
+#endif /* SOLARIS */
+
+#if defined __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** @descr
+    Handle FP errors using exceptions and setjmp/longjmp? DON'T in C++!
+    Switch off with SAL_MATH_FPCONTROL() and just calculate, test results with
+    SAL_MATH_FINITE(d), 0==error (INFinitiy, NaN), else ok.
+ */
+#if 0
+#define SAL_MATH_FPSIGNAL_JUMP 1
+#else /* 0 */
+#define SAL_MATH_FPSIGNAL_JUMP 0
+#endif /* 0 */
+
+
+/* signal() ID for FP exceptions */
+#if defined RS6000
+#define SAL_MATH_SIGFPE SIGTRAP
+#else /* RS6000 */
+#define SAL_MATH_SIGFPE SIGFPE
+#endif /* RS6000 */
+
+
+/* SAL_MATH_FPCONTROL(): switch FP exceptions on/off, depending on
+   SAL_MATH_FPSIGNAL_JUMP
+   SAL_MATH_FPRESET(): reinitialize math package
+*/
+#if defined WNT || defined WIN
+
+#define SAL_MATH_FPEXCEPTIONS_ON()  _control87( _MCW_EM, 0 )
+#define SAL_MATH_FPEXCEPTIONS_OFF() _control87( _MCW_EM, _MCW_EM )
+#define SAL_MATH_FPRESET()          _fpreset()
+
+#elif defined OS2
+
+#define SAL_MATH_FPEXCEPTIONS_ON() _control87( MCW_EM, 0 )
+#define SAL_MATH_FPEXCEPTIONS_OFF() _control87( MCW_EM, MCW_EM )
+#define SAL_MATH_FPRESET()          _fpreset()
+
+#elif defined RS6000
+
+#define SAL_MATH_FPEXCEPTIONS_ON()  fp_enable_all()
+#define SAL_MATH_FPEXCEPTIONS_OFF() fp_disable_all()
+#define SAL_MATH_FPRESET()
+
+#elif defined LINUX
+
+#include <fpu_control.h>
+
+void sal_math_setfpucw( fpu_control_t set );
+
+#if defined POWERPC
+/* set bit to 1 to enable that exception */
+/* _FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM | _FPU_MASK_IM */
+#define SAL_MATH_FPEXCEPTIONS_ON() sal_math_setfpucw(_FPU_DEFAULT | 0x000000F0)
+#define SAL_MATH_FPEXCEPTIONS_OFF() sal_math_setfpucw(_FPU_DEFAULT)
+#else /* POWERPC */
+#define SAL_MATH_FPEXCEPTIONS_ON()  sal_math_setfpucw(_FPU_DEFAULT & ~0x001F)
+#define SAL_MATH_FPEXCEPTIONS_OFF() sal_math_setfpucw(_FPU_IEEE)
+#endif /* POWERPC */
+#define SAL_MATH_FPRESET()
+
+#else /* WNT, WIN, OS2, RS6000, LINUX */
+
+#define SAL_MATH_FPEXCEPTIONS_ON()
+#define SAL_MATH_FPEXCEPTIONS_OFF()
+#define SAL_MATH_FPRESET()
+
+#endif /* WNT, WIN, OS2, RS6000, LINUX */
+
+
+#if SAL_MATH_FPSIGNAL_JUMP
+#define SAL_MATH_FPCONTROL() SAL_MATH_FPEXCEPTIONS_ON()
+#else /* SAL_MATH_FPSIGNAL_JUMP */
+#define SAL_MATH_FPCONTROL() SAL_MATH_FPEXCEPTIONS_OFF()
+#endif /* SAL_MATH_FPSIGNAL_JUMP */
+
+
+/* SAL_MATH_FINITE(d): test double d on INFINITY, NaN et al. */
+#if defined WNT
+#define SAL_MATH_FINITE(d) _finite(d)
+#elif defined MAC
+#define SAL_MATH_FINITE(d) isfinite(d)
+#elif defined LINUX || defined UNX
+#define SAL_MATH_FINITE(d) finite(d)
+#else /* WNT, MAC, LINUX, UNX */
+#error "SAL_MATH_FINITE not defined"
+#endif /* WNT, MAC, LINUX, UNX */
+
+
+/* This needs to be fixed for non--IEEE-754 platforms: */
+#if 1 /* IEEE 754 supported */
+#if defined OSL_BIGENDIAN
+
+/* IEEE 754 double structures for BigEndian */
+union sal_math_Double
+{
+    struct
+    {
+        unsigned sign         : 1;
+        unsigned exponent     :11;
+        unsigned fraction_hi  :20;
+        unsigned fraction_lo  :32;
+    } inf_parts;
+    struct
+    {
+        unsigned sign         : 1;
+        unsigned exponent     :11;
+        unsigned qnan_bit     : 1;
+        unsigned bits         :19;
+        unsigned fraction_lo  :32;
+    } nan_parts;
+    struct
+    {
+        unsigned msw          :32;
+        unsigned lsw          :32;
+    } w32_parts;
+    double value;
+};
+
+#elif defined OSL_LITENDIAN
+
+/* IEEE 754 double structures for LittleEndian */
+union sal_math_Double
+{
+    struct {
+        unsigned fraction_lo  :32;
+        unsigned fraction_hi  :20;
+        unsigned exponent     :11;
+        unsigned sign         : 1;
+    } inf_parts;
+    struct {
+        unsigned fraction_lo  :32;
+        unsigned bits         :19;
+        unsigned qnan_bit     : 1;
+        unsigned exponent     :11;
+        unsigned sign         : 1;
+    } nan_parts;
+    struct
+    {
+        unsigned lsw          :32;
+        unsigned msw          :32;
+    } w32_parts;
+    double value;
+};
+
+#else /* OSL_BIGENDIAN, OSL_LITENDIAN */
+
+#error "neither OSL_BIGENDIAN nor OSL_LITENDIAN"
+
+#endif /* OSL_BIGENDIAN, OSL_LITENDIAN */
+#else /* IEEE 754 supported */
+
+#error "don't know how to handle IEEE 754"
+
+#endif /* IEEE 754 supported */
+
+#if defined __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* INCLUDED_SAL_MATHCONF_H */