[pypy-commit] pypy default: cpyext: add pymath.h and a definition of Py_HUGE_VAL.

[amauryfa]

Author: Amaury Forgeot d'Arc <amauryfa at gmail.com>
Branch: 
Changeset: r52814:13ea80daa6d4
Date: 2012-02-23 00:07 +0100
http://bitbucket.org/pypy/pypy/changeset/13ea80daa6d4/

Log:	cpyext: add pymath.h and a definition of Py_HUGE_VAL.

diff --git a/pypy/module/cpyext/include/Python.h b/pypy/module/cpyext/include/Python.h
--- a/pypy/module/cpyext/include/Python.h
+++ b/pypy/module/cpyext/include/Python.h
@@ -113,6 +113,7 @@
 #include "compile.h"
 #include "frameobject.h"
 #include "eval.h"
+#include "pymath.h"
 #include "pymem.h"
 #include "pycobject.h"
 #include "pycapsule.h"
diff --git a/pypy/module/cpyext/include/pymath.h b/pypy/module/cpyext/include/pymath.h
new file mode 100644
--- /dev/null
+++ b/pypy/module/cpyext/include/pymath.h
@@ -0,0 +1,20 @@
+#ifndef Py_PYMATH_H
+#define Py_PYMATH_H
+
+/**************************************************************************
+Symbols and macros to supply platform-independent interfaces to mathematical
+functions and constants
+**************************************************************************/
+
+/* HUGE_VAL is supposed to expand to a positive double infinity.  Python
+ * uses Py_HUGE_VAL instead because some platforms are broken in this
+ * respect.  We used to embed code in pyport.h to try to worm around that,
+ * but different platforms are broken in conflicting ways.  If you're on
+ * a platform where HUGE_VAL is defined incorrectly, fiddle your Python
+ * config to #define Py_HUGE_VAL to something that works on your platform.
+ */
+#ifndef Py_HUGE_VAL
+#define Py_HUGE_VAL HUGE_VAL
+#endif
+
+#endif /* Py_PYMATH_H */