1 files changed, 22 insertions, 0 deletions
diff --git a/2.3-1/src/c/elementaryFunctions/Trigonometry/sech/dsechs.c b/2.3-1/src/c/elementaryFunctions/Trigonometry/sech/dsechs.c
new file mode 100644
index 00000000..fdcfd69c
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/Trigonometry/sech/dsechs.c
@@ -0,0 +1,22 @@
+/* Copyright (C) 2016 - IIT Bombay - FOSSEE
+
+ This file must be used under the terms of the CeCILL.
+ This source file is licensed as described in the file COPYING, which
+ you should have received as part of this distribution.  The terms
+ are also available at
+ http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ Author: Shamik Guha
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+
+#include <math.h>
+#include "sech.h"
+#include "cosh.h"
+#include "cos.h"
+
+
+double dsechs(double in)
+{
+  return (1/cosh(in));
+}