Issue #7117 (backport py3k float repr) continued:
- add double endianness detection to configure script
- add configure-time check to see whether we can use inline
assembly to get and set x87 control word in configure script
- add functions to get and set x87 control word in Python/pymath.c
- add pyport.h logic to determine whether it's safe to use the
short float repr or not
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 6bc9d7f..ff1734e 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -18,6 +18,18 @@
/* Define if you have the Mach cthreads package */
#undef C_THREADS
+/* Define if C doubles are 64-bit IEEE 754 binary format, stored in ARM
+ mixed-endian order (byte order 45670123) */
+#undef DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754
+
+/* Define if C doubles are 64-bit IEEE 754 binary format, stored with the most
+ significant byte first */
+#undef DOUBLE_IS_BIG_ENDIAN_IEEE754
+
+/* Define if C doubles are 64-bit IEEE 754 binary format, stored with the
+ least significant byte first */
+#undef DOUBLE_IS_LITTLE_ENDIAN_IEEE754
+
/* Define if --enable-ipv6 is specified */
#undef ENABLE_IPV6
@@ -240,6 +252,10 @@
/* Define to 1 if you have the `gamma' function. */
#undef HAVE_GAMMA
+/* Define if we can use gcc inline assembler to get and set x87 control word
+ */
+#undef HAVE_GCC_ASM_FOR_X87
+
/* Define if you have the getaddrinfo function. */
#undef HAVE_GETADDRINFO