Use #include "mymath.h" instead of declaring fabs() explicitly.
This should solve a weird problem on the Mac for Jack.
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index dbcb1a9..5e3f9fa 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -33,6 +33,7 @@
#include "Python.h"
+#include "mymath.h"
#include <ctype.h>
#ifdef COUNT_ALLOCS
@@ -627,8 +628,6 @@
#define F_ALT (1<<3)
#define F_ZERO (1<<4)
-extern double fabs Py_PROTO((double));
-
static int
formatfloat(buf, flags, prec, type, v)
char *buf;