2 files changed, 4 insertions, 3 deletions
diff --git a/win32/win32.c b/win32/win32.c
index ab9a438ca1..c0aff25619 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -363,6 +363,10 @@ NtInitialize(int *argc, char ***argv)
     WORD version;
     int ret;
 
+#ifdef __BORLANDC__
+    _controlfp(0x5, 0x5);
+#endif
+
     //
     // subvert cmd.exe's feeble attempt at command line parsing
     //
diff --git a/win32/win32.h b/win32/win32.h
index f8bf377409..b378fb23cd 100644
--- a/win32/win32.h
+++ b/win32/win32.h
@@ -177,9 +177,6 @@ extern pid_t rb_w32_getpid(void);
 
 #ifdef __BORLANDC__
 #include <float.h>
-#ifndef isinf
-#define isinf    !_finite
-#endif
 #ifndef isnan
 #define isnan    _isnan
 #endif