--- sprintf.c	2009-09-07 17:48:45.000000000 -0500
+++ sprintf.c.2	2009-09-07 17:48:09.000000000 -0500
@@ -725,7 +725,6 @@
 		char fbuf[32];
 
 		fval = RFLOAT(rb_Float(val))->value;
-#if defined(_WIN32) && !defined(__BORLANDC__)
 		if (isnan(fval) || isinf(fval)) {
 		    char *expr;
 
@@ -783,7 +782,6 @@
 		    blen += strlen(&buf[blen]);
 		    break;
 		}
-#endif	/* defined(_WIN32) && !defined(__BORLANDC__) */
 		fmt_setup(fbuf, *p, flags, width, prec);
 		need = 0;
 		if (*p != 'e' && *p != 'E') {