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-rw-r--r--popt/popt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/popt/popt.c b/popt/popt.c
index 9ce3b355..fcf671ca 100644
--- a/popt/popt.c
+++ b/popt/popt.c
@@ -18,6 +18,10 @@
#include "findme.h"
#include "poptint.h"
+#ifndef DBL_EPSILON
+#define DBL_EPSILON 2.2204460492503131e-16
+#endif
+
#ifdef MYDEBUG
/*@unchecked@*/
int _popt_debug = 0;