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-rw-r--r--Constants/src/constants.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/Constants/src/constants.h b/Constants/src/constants.h
index 8eea227..0493804 100644
--- a/Constants/src/constants.h
+++ b/Constants/src/constants.h
@@ -1,4 +1,7 @@
+/* $Header$ */
+
#ifndef CONSTANTS_H
+#define CONSTANTS_H
#ifdef CCODE
#define CONSTANT_c_SI 2.99792458e8