[fuse-emulator-cvs] SF.net SVN: fuse-emulator:[4122] trunk/libspectrum

[<fr...@us...>]

Revision: 4122
          http://fuse-emulator.svn.sourceforge.net/fuse-emulator/?rev=4122&view=rev
Author:   fredm
Date:     2010-02-21 05:45:00 +0000 (Sun, 21 Feb 2010)

Log Message:
-----------
Define M_LN2 for use with non C99 math.h (part of patch #2533274) (Simon Owen).

Modified Paths:
--------------
    trunk/libspectrum/hacking/ChangeLog
    trunk/libspectrum/internals.h

Modified: trunk/libspectrum/hacking/ChangeLog
===================================================================
--- trunk/libspectrum/hacking/ChangeLog	2010-02-21 05:10:28 UTC (rev 4121)
+++ trunk/libspectrum/hacking/ChangeLog	2010-02-21 05:45:00 UTC (rev 4122)
@@ -761,3 +761,5 @@
          of patch #2533274) (Simon Owen).
 20100221 internals.h: define __func__ in MSVC (part of patch #2533274) (Simon
          Owen).
+20100221 internals.h: define M_LN2 for use with non C99 math.h (part of patch
+         #2533274) (Simon Owen).

Modified: trunk/libspectrum/internals.h
===================================================================
--- trunk/libspectrum/internals.h	2010-02-21 05:10:28 UTC (rev 4121)
+++ trunk/libspectrum/internals.h	2010-02-21 05:45:00 UTC (rev 4122)
@@ -51,6 +51,12 @@
 #endif				/* _MSC_VER > 1200 */
 #endif				/* #ifdef _MSC_VER */
 
+/* VC6 lacks M_LN2, and VS2003+ require _USE_MATH_DEFINES defined before math.h
+ */
+#ifndef M_LN2
+#define M_LN2 0.693147180559945309417
+#endif
+
 /* On Win32 systems, map snprintf -> _snprintf, strcasecmp -> _stricmp and
    strncasecmp -> _strnicmp */
 #if !defined(HAVE_SNPRINTF) && defined(HAVE__SNPRINTF)


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