1 files changed, 31 insertions, 0 deletions
diff --git a/nuttx/lib/math/lib_cos.c b/nuttx/lib/math/lib_cos.c
new file mode 100644
index 000000000..f8732b041
--- /dev/null
+++ b/nuttx/lib/math/lib_cos.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com>
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <float.h>
+#include <apps/math.h>
+
+float cosf(float x) {
+	return sinf(x + M_PI_2);
+}
+
+double cos(double x) {
+	return sin(x + M_PI_2);
+}
+
+long double cosl(long double x) {
+	return sinl(x + M_PI_2);
+}