[svn:parrot] r37133 - trunk/config/gen/platform/cygwin

[rurban at svn.parrot.org]

Author: rurban
Date: Thu Mar  5 19:30:35 2009
New Revision: 37133
URL: https://trac.parrot.org/parrot/changeset/37133

Log:
[core] Add cygwin fallback to correct __POSIX__ math 
behaviour (for atan2) if -D__STRICT_ANSI__

Modified:
   trunk/config/gen/platform/cygwin/math.c

Modified: trunk/config/gen/platform/cygwin/math.c
==============================================================================
--- trunk/config/gen/platform/cygwin/math.c	Thu Mar  5 19:14:16 2009	(r37132)
+++ trunk/config/gen/platform/cygwin/math.c	Thu Mar  5 19:30:35 2009	(r37133)
@@ -22,12 +22,16 @@
 */
 
 /*
- * force atan2() to use IEEE behavior
+ * force atan2() to use fast IEEE behavior
  */
 
 #include <math.h>
 
+#ifndef __STRICT_ANSI__
 _LIB_VERSION_TYPE _LIB_VERSION = _IEEE_;
+#else
+_LIB_VERSION_TYPE _LIB_VERSION = _POSIX_;
+#endif
 
 #if DOUBLE_SIZE == 2 * INT_SIZE
 /*
@@ -63,7 +67,10 @@
 =item C<int
 Parrot_signbit_l(long double x)>
 
-RT#48260: Not yet documented!!!
+Same as Parrot_signbit for long double.
+
+Return true if the Numval has a negative sign.
+This is mostly for handling the -0.0 case.
 
 =cut