Merged revisions 68296,68299 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r68296 | mark.dickinson | 2009-01-04 12:29:36 +0000 (Sun, 04 Jan 2009) | 6 lines
Add autoconf test to detect x87-style double rounding, as described in
issue #2937. This information can be helpful for diagnosing platform-
specific problems in math and cmath. The result of the test also
serves as a fairly reliable indicator of whether the x87 floating-point
instructions (as opposed to SSE2) are in use on Intel x86/x86_64 systems.
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r68299 | mark.dickinson | 2009-01-04 13:57:26 +0000 (Sun, 04 Jan 2009) | 4 lines
isinf and isnan are macros, not functions; fix configure script
to use AC_CHECK_DECLS instead of AC_CHECK_FUNCS for these.
(See discussion in issue #4506)
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diff --git a/Include/pymath.h b/Include/pymath.h
index 7cea9ae..13f95b4 100644
--- a/Include/pymath.h
+++ b/Include/pymath.h
@@ -87,7 +87,7 @@
* Note: PC/pyconfig.h defines Py_IS_NAN as _isnan
*/
#ifndef Py_IS_NAN
-#ifdef HAVE_ISNAN
+#ifdef HAVE_DECL_ISNAN
#define Py_IS_NAN(X) isnan(X)
#else
#define Py_IS_NAN(X) ((X) != (X))
@@ -104,7 +104,7 @@
* Note: PC/pyconfig.h defines Py_IS_INFINITY as _isinf
*/
#ifndef Py_IS_INFINITY
-#ifdef HAVE_ISINF
+#ifdef HAVE_DECL_ISINF
#define Py_IS_INFINITY(X) isinf(X)
#else
#define Py_IS_INFINITY(X) ((X) && (X)*0.5 == (X))